MEP Specification Index
Division 15
Pages
SECTION 15010 - BASIC MECHANICAL REQUIREMENTS
SECTION 15050 - BASIC MECHANICAL MATERIALS AND METHODS
SECTION 15060 - HANGERS AND SUPPORTS
SECTION 15080 - MECHANICAL INSULATION
SECTION 15110 - VALVES
SECTION 15140 - DOMESTIC WATER PIPING
SECTION 15150 - SANITARY WASTE AND VENT PIPING
SECTION 15183 - REFRIGERANT PIPING
SECTION 15194 - FUEL GAS PIPING
SECTION 15410 - PLUMBING FIXTURES
SECTION 15430 - PLUMBING SPECIALTIES
SECTION 15780 - PACKAGED ROOFTOP MAKE-UP AIR UNITS
SECTION 15781 - ROOFTOP UNITS
SECTION 15782 - VRV INDOOR UNITS
SECTION 15783 - VRV OUTDOOR UNITS
SECTION 15815 - METAL DUCTS
SECTION 15820 - DUCT ACCESSORIES
SECTION 15838 - POWER VENTILATORS
SECTION 15855 - AIR OUTLETS AND INLETS
SECTION 15990 - TESTING, ADJUSTING, AND BALANCING
15010/1 – 5
15050/1 – 9
15060/1 – 4
15080/1 – 2
15110/1 – 4
15140/1 – 6
15150/1 – 5
15183/1 – 4
15194/1 – 5
15410/1 – 9
15430/1 – 7
15780/1 – 12
15781/1 – 10
15782/1 – 10
15783/1 – 10
15815/1 – 6
15820/1 – 8
15838/1 – 6
15855/1 – 5
15990/1 – 3
Division 16
Pages
SECTION 16010 - BASIC ELECTRICAL REQUIREMENTS
SECTION 16050 - BASIC ELECTRICAL MATERIALS AND METHODS
SECTION 16130 - RACEWAYS AND BOXES
SECTION 16140 - WIRING DEVICES
SECTION 16410 - ENCLOSED SWITCHES AND CIRCUIT BREAKERS
SECTION 16442 - PANELBOARDS
SECTION 16510 - LIGHTING FIXTURES
SECTION 16520 - LIGHTING CONTROL DEVICES
SECTION 16721 - MULTIPLEX FIRE ALARM SYSTEM
SECTION 16765 - SCHOOL INTERCOM SYSTEMS
16010/1 – 5
16050/1 – 10
16130/1 – 6
16140/1 – 4
16410/1 – 4
16442/1 – 5
16510/1 – 10
16520/1 – 4
16721/1 – 13
16765/1 – 4
SECTION 15010 - BASIC MECHANICAL REQUIREMENTS
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of Contract, including General and Supplementary Conditions
and Division 1 Specification Sections, apply to this and the other sections of Division 15.
B.
Related Sections: The following Division 15 sections contain requirements that relate to this
section:
1.
“Basic Mechanical Materials and Methods,” for materials and methods common to the
remainder of Division 15, plus general related specifications including:
a.
b.
1.2
Access to mechanical installations.
Excavation for mechanical installations within the building boundaries, and from
building to utilities connections.
SUMMARY
A.
This Section includes general administrative and procedural requirements for mechanical
installations. The following administrative and procedural requirements are included in this
Section to expand the requirements specified in Division 1:
1.
2.
3.
4.
5.
6.
7.
8.
1.3
Submittals.
Record documents.
Maintenance manuals.
Rough-ins.
Mechanical installations.
Cutting and patching.
Temporary heating, ventilating and air conditioning.
Substitutions.
QUALITY ASSURANCE
A.
Comply with IBC “International Building Code” for plumbing and mechanical materials,
components, and installations.
B.
Comply with IPC “International Plumbing Code” for plumbing materials, components, and
installations.
C.
Comply with IMC “International Mechanical Code” mechanical materials, components, and
installations.
D.
NFPA Compliance:
applicable:
1.
2.
Components and installation shall comply with the following where
NFPA 90A - Installation of Air Conditioning and Ventilating Systems.
NFPA 101 - Life Safety Code.
BASIC MECHANICAL REQUIREMENTS
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1.4
SUBMITTALS
A.
General: Follow the procedures specified in Division 1 Section “Submittals.”
B.
Increase the number of mechanical related shop drawings, product data, and samples
submitted, to allow for required distribution plus one copy of each submittal required, which will
be retained by the Mechanical Consulting Engineer.
C.
Additional copies may be required by individual sections of these Specifications.
1.5
RECORD DOCUMENTS
A.
Prepare record documents in accordance with the requirements in Division 1 Section “Project
Closeout.” In addition to the requirements specified in Division 1, indicate the following installed
conditions:
1.
2.
3.
4.
1.6
Ductwork mains and branches, size and location, for both exterior and interior; locations
of dampers and other control devices; filters, boxes, and terminal units requiring periodic
maintenance or repair.
Mains and branches of piping systems, with valves and control devices located and
numbered, concealed unions located, and with items requiring maintenance located (i.e.,
traps, strainers, expansion compensators, tanks, etc.). Valve location diagrams,
complete with valve tag chart. Refer to Division 15 Section “Mechanical Identification.”
Indicate actual inverts and horizontal locations of underground piping.
Equipment locations (exposed and concealed), dimensioned from prominent building
lines.
Approved substitutions, Contract Modifications, and actual equipment and materials
installed.
OPERATION AND MAINTENANCE MANUALS
A.
Prepare three (3) bound Operation and Maintenance Manuals in accordance with Division 1
Section “Project Closeout.” In addition to the requirements specified in Division 1, include the
following information for equipment items:
1.
2.
3.
4.
5.
6.
1.7
Description of function, normal operating characteristics and limitations, performance
curves, engineering data and tests, complete nomenclature and commercial numbers of
replacement parts and complete parts listing with part name and number.
Manufacturer's printed operating procedures to include start-up, break-in, and routine
and normal operating instructions; regulation, control, stopping, shutdown, and
emergency instructions; and summer and winter operating instructions.
Maintenance procedures for routine preventative maintenance and troubleshooting;
disassembly, repair, and reassembly; aligning and adjusting instructions.
Servicing instructions and lubrication charts and schedules.
Reviewed shop drawings and submittals.
Record of spare parts provided to Owner with a signature of receipt by Owner's
representative.
DELIVERY, STORAGE, AND HANDLING
A.
Deliver products to the project properly identified with names, model numbers, types, grades,
compliance labels, and other information needed for identification.
B.
Deliver products in factory-fabricated type containers or wrappings which properly protect
BASIC MECHANICAL REQUIREMENTS
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product from damage.
C.
Store products indoors in clean, dry space in original containers. Protect products from
weather, construction traffic and debris. When necessary to store outdoors, take similar
precautions and store above grade and enclose with waterproof covering.
D.
Handle products carefully to prevent physical damage.
replace damaged products with new.
Do not install damaged products;
PART 2 - PRODUCTS
2.1
GENERAL
A.
All equipment and material provided shall be “lead paint free” and asbestos free.
PART 3 - EXECUTION
3.1
ROUGH-IN
A.
Verify final locations for rough-ins with field measurements and with the requirements of the
actual equipment to be connected.
B.
Refer to equipment specifications in Divisions 2 through 16 for rough-in requirements.
3.2
MECHANICAL INSTALLATIONS
A.
General: Sequence, coordinate, and integrate the various elements of mechanical systems,
materials, and equipment. Comply with the following requirements:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Coordinate mechanical systems, equipment, and materials installation with other building
components.
Verify all dimensions by field measurements.
Arrange for chases, slots, and openings in other building components during progress of
construction, to allow for mechanical installations.
Coordinate the installation of required supporting devices and sleeves to be set in
poured-in-place concrete and other structural components, as they are constructed.
Sequence, coordinate, and integrate installations of mechanical materials and equipment
for efficient flow of the Work. Give particular attention to large equipment requiring
positioning prior to closing in the building.
Where mounting heights are not detailed or dimensioned, install systems, materials, and
equipment to provide the maximum headroom possible.
Coordinate connection of mechanical systems with exterior underground and overhead
utilities and services. Comply with requirements of governing regulations, franchised
service companies, and controlling agencies. Provide required connection for each
service.
Install systems, materials, and equipment to conform with reviewed submittal data,
including coordination drawings, to greatest extent possible. Conform to arrangements
indicated by the Contract Documents, recognizing that portions of the Work are shown
only in diagrammatic form. Where coordination requirements conflict with individual
system requirements, refer conflict to the Architect.
Install systems, materials, and equipment level and plumb, parallel and perpendicular to
other building systems and components, where installed exposed in finished spaces.
BASIC MECHANICAL REQUIREMENTS
1230
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10.
11.
12.
3.3
Install mechanical equipment to facilitate servicing, maintenance, and repair or replacement
of equipment components. As much as practical, connect equipment for ease of
disconnecting, with minimum of interference with other installations. Extend grease fittings
to an accessible location.
Install access panels or doors where units are concealed behind finished surfaces.
Install systems, materials, and equipment giving right-of-way priority to systems required
to be installed at a specified slope.
EQUIPMENT ELECTRICAL CONNECTIONS
A.
Electrical: Conform to applicable requirements in Division 16 Sections.
B.
Grounding: Ground equipment. Tighten electrical connectors and terminals, including
grounding connections, according to manufacturer’s published torque tightening valves. Where
manufacturer’s torque valves are not indicated, use those specified in UL 486A and UL 486B.
C.
Provide all accessories required for complete installation of equipment provided in Division 15
Sections. Mount accessories in appropriate locations to insure access and proper operation.
Accessories include equipment control panels, solenoid valves, aqua-stats, flow switches and
similar devices.
D.
Arrange for the project electrical contractor to install all control wiring in conduit associated with
any accessories provided in Division 15 Sections. Mechanical contractor is responsible for the
cost of the electrical installation and for providing all equipment control wiring diagrams to the
electrical contractor to insure proper connections. Control diagrams shall clearly identify
factory-installed wiring and field-installed wiring. In the absence of a temperature control
contractor, the mechanical contractor shall include any wiring associated with temperature
control devices with the wiring to be installed by the electrical contractor.
3.4
CUTTING AND PATCHING
A.
General: Perform cutting and patching in accordance with Division 1 Section “Cutting and
Patching.” In addition to the requirements specified in Division 1, the following requirements
apply:
1.
Perform cutting, fitting, and patching of mechanical equipment and materials required to:
a.
b.
c.
d.
e.
f.
2.
3.
4.
5.
Uncover Work to provide for installation of ill-timed Work.
Remove and replace defective Work.
Remove and replace Work not conforming to requirements of the Contract
Documents.
Remove samples of installed Work as specified for testing.
Install equipment and materials in existing structures.
Upon written instructions from the Architect, uncover and restore Work to provide
for Architect/Engineer observation of concealed Work.
Cut, remove and legally dispose of selected mechanical equipment, components, and
materials as indicated, including but not limited to removal of mechanical piping, heating
units, plumbing fixtures and trim, and other mechanical items made obsolete by the new
Work.
Protect the structure, furnishings, finishes, and adjacent materials not indicated or
scheduled to be removed.
Provide and maintain temporary partitions or dust barriers adequate to prevent the
spread of dust and dirt to adjacent areas.
Protection of Installed Work: During cutting and patching operations, protect adjacent
installations.
BASIC MECHANICAL REQUIREMENTS
1230
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6.
3.5
Patch finished surfaces and building components using new materials specified for the
original installation and experienced Installers. Installers' qualifications refer to the
materials and methods required for the surface and building components being patched.
TEMPORARY HEATING, VENTILATING AND AIR CONDITIONING
A.
General: The new heating, ventilating and air conditioning systems SHALL NOT be utilized
during construction or prior to Substantial Completion. All system components (i.e. equipment,
ductwork) shall be protected from dust and dirt prior to Substantial Completion. Prior to start-up
of system, all system components (i.e. equipment, ductwork) shall be thoroughly cleaned and
vacuumed inside and outside. All equipment air filters shall be replaced with materials other
than those supplied to the Owner as “Extra Materials.”
B.
Special and unusual circumstances may allow requests by the Contractor to utilize the
permanent HVAC system for heating, ventilating, and air conditioning prior to Substantial
Completion. If such a request is granted, it is understood that this in no way affects the
guarantees, which become effective at the time of Substantial Completion. It is understood that
if the new HVAC system is utilized prior to Substantial Completion, all system components (i.e.
equipment, ductwork) shall be thoroughly cleaned and vacuumed inside and outside, and all
filters will be replaced. Replacement filters are not to be taken from any extra materials
required by other sections of these specifications.
3.6
SUBSTITUTIONS
A.
General: All changes and additional work required by this Contractor or any other Contractor
because of a substitution of an equivalent piece of equipment by this Contractor shall be the
responsibility of this Contractor. Substitutions will only be considered when the quality of the
product is maintained and it is advantageous to the Owner to consider.
B.
Requests for approval to bid equipment by a manufacturer not listed in these specifications
must be received by A/E, in written form, a minimum of ten (10) calendar days prior to bid date.
3.7
UTILITY SERVICE CONNECTIONS
A.
3.8
Coordinate all utility service connections with local utility and comply with all requirements of
that utility.
CLEANING
A.
All equipment and installed materials shall be cleaned inside and outside. All construction dust
and loose materials shall be removed. Any printed information attached to the equipment shall
be removed and included in the Operation and Maintenance Manuals. Equipment nameplates
shall NOT be removed. Any scratched paint surfaces shall be repaired with manufacturer's
touch-up paint.
END OF SECTION 15010
BASIC MECHANICAL REQUIREMENTS
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SECTION 15050 - BASIC MECHANICAL MATERIALS AND METHODS
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
B.
Requirements specified in Division 15 Section “Basic Mechanical Requirements” apply to this
Section.
1.2
SUMMARY
A.
This Section includes the following basic mechanical materials and methods to complement
other Division 15 Sections and for application with mechanical installations.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
B.
1.3
Piping materials and installation instructions common to most piping systems.
Concrete equipment bases.
Escutcheons.
Flexible connectors.
Mechanical sleeve seals.
Equipment nameplate data requirements.
Mechanical identification.
Nonshrink grout for equipment installations.
Field-fabricated metal and wood equipment supports.
Installation requirements common to equipment specification sections.
Mechanical demolition.
Cutting and patching.
Touchup painting and finishing.
Excavation for underground utilities and services, including underground pipes and
equipment.
Joint sealers for sealing around mechanical materials and equipment; and for sealing
penetrations in fire and smoke barriers, floors, and foundation walls.
Access panels and doors in walls, ceilings, and floors for access to mechanical materials
and equipment.
Pipe and pipe fitting materials are specified in Division 15 piping system Sections.
SUBMITTALS
A.
General: Submit the following according to the Conditions of the Contract and Division 15 Section “Basic Mechanical Requirements.”
B.
Shop Drawings: Detail fabrication and installation for metal and wood supports and anchorage
for mechanical materials and equipment.
C.
Schedules indicating proposed methods and sequence of operations for selective demolition
prior to commencement of work. Include coordination for shut-off of services, and details for
dust and noise control.
BASIC MECHANICAL MATERIALS AND METHODS
1230
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1.4
QUALITY ASSURANCE
A.
Comply with ASME A13.1 for lettering size, length of color field, colors, and viewing angles of
identification devices.
B.
Equipment Selection: Equipment of higher electrical characteristics, physical dimensions, capacities, and ratings may be furnished provided such proposed equipment is approved in writing
and connecting mechanical and electrical services, circuit breakers, conduit, motors, bases, and
equipment spaces are increased. If minimum energy ratings or efficiencies of equipment are
specified, equipment must meet design and commissioning requirements.
C.
Fire-Resistance Ratings: Where a fire-resistance classification is indicated, provide access
door assembly with panel door, frame, hinge, and latch frame manufacturer listed in the UL
"Building Materials Directory" for rating shown.
1.5
DELIVERY, STORAGE, AND HANDLING
A.
Deliver pipes and tubes with factory-applied end caps. Maintain end caps through shipping,
storage, and handling to prevent pipe end damage and prevent entrance of dirt, debris, and
moisture.
B.
Protect stored pipes and tubes from moisture and dirt. Elevate above grade. Do not exceed
structural capacity of floor, if stored inside.
C.
Protect flanges, fittings, and piping specialties from moisture and dirt.
D.
Store plastic pipes protected from direct sunlight. Support to prevent sagging and bending.
1.6
SEQUENCING AND SCHEDULING
A.
Coordinate mechanical equipment installation with other building components.
B.
Arrange for pipe spaces, chases, slots, and openings in building structure during progress of
construction to allow for mechanical installations.
C.
Coordinate installation of required supporting devices and set sleeves in poured-in-place concrete and other structural components, as they are constructed.
D.
Coordinate connection of mechanical systems with exterior underground and overhead utilities
and services. Comply with requirements of governing regulations, franchised service companies, and controlling agencies.
E.
Coordinate requirements for access panels and doors if mechanical items requiring access are
concealed behind finished surfaces.
F.
Coordinate installation of identifying devices after completing covering and painting, if devices
are applied to surfaces. Install identifying devices before installing acoustical ceilings and similar concealment.
1.7
PROJECT CONDITIONS
A.
Conditions Affecting Selective Demolition: The following project conditions apply:
BASIC MECHANICAL MATERIALS AND METHODS
1230
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1.
2.
B.
Protect adjacent materials indicated to remain. Install and maintain dust and noise barriers
to keep dirt, dust, and noise from being transmitted to adjacent areas. Remove protection
and barriers after demolition operations are complete.
Locate, identify, and protect services passing through demolition area and serving other areas outside the demolition limits. Maintain services to areas outside demolition limits.
When services must be interrupted, install temporary services for affected areas.
Conditions Affecting Excavations: The following project conditions apply:
1.
2.
3.
Maintain and protect existing building services which transit the area affected by selective
demolition.
Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused
by settlement, lateral movement, undermining, washout, and other hazards created by excavation operations.
Existing Utilities: Locate existing underground utilities in excavation areas. If utilities are indicated to remain, support and protect services during excavation operations.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Subject to compliance with requirements, provide products by one of the following:
1.
Access Doors:
a.
b.
c.
d.
e.
2.
Bar-Co., Inc.
J.L. Industries
Karp Associates, Inc.
Milcor Div. Inryco, Inc.
Nystrom, Inc.
Elastomeric Joint Sealers:
a.
One-Part, Mildew-Resistant, Silicone Sealant:
1)
2)
3)
4)
3.
Fire-Resistant Joint Sealers:
a.
b.
c.
2.2
2.3
"863 #345 White," Pecora Corp.
"Rhodorsil 6B White," Rhone-Poulenc, Inc.
"Proglaze White," Tremco Corp.
"OmniPlus," Sonneborn Building Products Div.
STI (Specified Technologies, Inc.)
3M Fire Protection Products
IPC (International Protective Coatings Corp.)
PIPE AND PIPE FITTINGS
A.
Refer to individual Division 15 piping Sections for pipe and fitting materials and joining methods.
B.
Pipe Threads: ASME B1.20.1 for factory-threaded pipe and pipe fittings.
MECHANICAL SLEEVE SEALS
BASIC MECHANICAL MATERIALS AND METHODS
1230
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A.
2.4
Description: Modular design, with interlocking rubber links shaped to continuously fill annular
space between pipe and sleeve. Include connecting bolts and pressure plates.
IDENTIFYING DEVICES AND LABELS
A.
General: Manufacturer's standard products of categories and types required for each application as referenced in other Division 15 Sections. If more than one type is specified for application, selection is Installer's option, but provide one selection for each product category.
B.
Equipment Nameplates: Metal nameplate with operational data engraved or stamped; permanently fastened to equipment.
1.
2.
C.
2.5
Data: Manufacturer, product name, model number, serial number, capacity, operating
and power characteristics, labels of tested compliances, and similar essential data.
Location: Accessible and visible location.
Pressure-Sensitive Pipe Markers: Manufacturer's standard preprinted, permanent adhesive,
color-coded, pressure-sensitive vinyl, complying with ASME A13.1.
CONCRETE AND REINFORCEMENT MATERIALS
A.
Concrete: Portland cement, mix to a 3,000 psi, 28 day compressive strength.
1.
2.
3.
4.
B.
2.6
Cement: ASTM C150, Type 1.
Fine Aggregate: ASTM C33, sand.
Coarse Aggregate: ASTM C33, crushed gravel.
Water: Potable.
Reinforcement Fabric: ASTM A185, welded-wire fabric, plain.
ACCESS DOORS
A.
Steel Access Doors and Frames: Factory-fabricated and assembled units, complete with attachment devices and fasteners ready for installation. Joints and seams shall be continuously
welded steel, with welds ground smooth and flush with adjacent surfaces.
B.
Frames: 16-gage steel, with a 1-inch-wide exposed perimeter flange for units installed in unit
masonry, pre-cast, or cast-in-place concrete, ceramic tile, or wood paneling.
1.
2.
2.7
For installation in masonry, concrete, ceramic tile, or wood paneling: 1 inch-wide-exposed
perimeter flange and adjustable metal masonry anchors.
For gypsum wallboard or plaster: perforated flanges with wallboard bead.
JOINT SEALERS
A.
General: Joint sealers, joint fillers, and other related materials compatible with each other and
with joint substrates under conditions of service and application.
B.
Elastomeric Joint Sealers: Provide the following types:
1.
One-part, mildew-resistant, silicone sealant complying with ASTM C 920, Type S, Grade
NS, Class 25, for uses in non-traffic areas for glass, aluminum, and nonporous joint substrates; formulated with fungicide; intended for sealing interior joints with nonporous sub-
BASIC MECHANICAL MATERIALS AND METHODS
1230
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strates; and subject to in-service exposure to conditions of high humidity and temperature
extremes.
C.
Fire-Resistant Joint Sealers: Two-part, foamed-in-place, silicone sealant formulated for use in
through-penetration fire-stopping around pipes, and duct penetrations through fire- rated walls
and floors. Sealants and accessories shall have fire- resistance ratings indicated, as established by testing identical assemblies in accordance with ASTM E 814, by Underwriters' Laboratories, Inc., or other testing and inspection agency acceptable to authorities having jurisdiction.
PART 3 - EXECUTION
3.1
PIPING SYSTEMS - COMMON REQUIREMENTS
A.
General: Install piping as described below, unless piping Sections specify otherwise. Individual
Division 15 piping Sections specify unique piping installation requirements.
B.
General Locations and Arrangements: Drawing plans, schematics, and diagrams indicate general location and arrangement of piping systems. Install components with pressure rating equal
to or greater than system operating pressure.
C.
Install piping free of sags and bends.
D.
Install exposed interior and exterior piping at right angles or parallel to building walls. Diagonal
runs are prohibited, unless otherwise indicated.
E.
Install piping tight to slabs, beams, joists, columns, walls, and other building elements. Allow
sufficient space above removable ceiling panels to allow for ceiling panel removal.
F.
Install piping to allow application of insulation plus 1-inch (25-mm) clearance around insulation.
G.
Locate groups of pipes parallel to each other, spaced to permit valve servicing.
H.
Install fittings for changes in direction and branch connections.
I.
Install couplings according to manufacturer's written instructions.
J.
Install pipe escutcheons for pipe penetrations of concrete and masonry walls, wall board partitions, and suspended ceilings according to the following:
1.
2.
3.
Uninsulated Piping Floor Plates in Utility Areas: Cast-iron floor plates.
Insulated Piping: Cast brass or stamped steel; with concealed hinge, spring clips, and
chrome-plated finish.
Piping in Utility Areas: Cast brass or stamped steel, with set-screw or spring clips.
K.
Install sleeves for pipes passing through concrete and masonry walls.
L.
Aboveground, Exterior-Wall, Pipe Penetrations: Seal penetrations using sleeves and mechanical sleeve seals. Size sleeve for 1-inch (25-mm) annular clear space between pipe and sleeve
for installing mechanical sleeve seals.
1.
M.
Install steel pipe for sleeves smaller than 6 inches (150 mm) in diameter.
Fire-Barrier Penetrations: Where applicable, maintain existing fire rating of walls, partitions,
ceilings, and floors at pipe penetrations. Seal pipe penetrations with firestopping materials.
BASIC MECHANICAL MATERIALS AND METHODS
1230
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N.
Piping Joint Construction: Join pipe and fittings as follows and as specifically required in individual piping specification Sections:
1.
2.
3.
Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.
Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before
assembly.
Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1.
Cut threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs
and restore full ID. Join pipe fittings and valves as follows:
a.
b.
c.
d.
e.
O.
Piping Connections: Make connections according to the following, unless otherwise indicated:
1.
3.2
Note internal length of threads in fittings or valve ends, and proximity of internal
seat or wall, to determine how far pipe should be threaded into joint.
Apply appropriate tape or thread compound to external pipe threads, unless dry
seal threading is specified.
Align threads at point of assembly.
Tighten joint with wrench. Apply wrench to valve end into which pipe is being
threaded.
Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded
or damaged. Do not use pipe sections that have cracked or open welds.
Install unions, in piping 2-inch NPS (DN50) and smaller, adjacent to each valve and at final connection to each piece of equipment with 2-inch NPS (DN50) or smaller threaded
pipe connection.
EQUIPMENT INSTALLATION - COMMON REQUIREMENTS
A.
Install equipment to provide maximum possible headroom, if mounting heights are not indicated.
B.
Install equipment according to approved submittal data. Portions of the Work are shown only in
diagrammatic form. Refer conflicts to Engineer.
C.
Install equipment level and plumb, parallel and perpendicular to other building systems and
components in exposed interior spaces, unless otherwise indicated.
D.
Install equipment giving right of way to piping installed at required slope.
E.
Install flexible connectors on equipment side of shutoff valves, horizontally and parallel to
equipment shafts if possible.
3.3
LABELING AND IDENTIFYING
A.
Piping Systems: Install pipe markers on each system. Include arrows showing normal direction
of flow.
1.
Plastic markers, with application systems. Install on insulation segment if required for
hot, uninsulated piping.
B.
Equipment: Install engraved plastic-laminate sign or equipment marker on or near each major
item of mechanical equipment.
1.
Lettering Size: Minimum 1/4-inch- (6.4-mm-) high lettering for name of unit if viewing distance is less than 24 inches (610 mm), ½-inch- (12.7-mm-) high lettering for distances up
to 72 inches (1800 mm), and proportionately larger lettering for greater distances. Provide secondary lettering two-thirds to three-fourths of size of principal lettering.
BASIC MECHANICAL MATERIALS AND METHODS
1230
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2.
C.
3.4
Text of Signs: Provide name of identified unit. Include text to distinguish between multiple units, inform user of operational requirements, indicate safety and emergency precautions, and warn of hazards and improper operations.
Adjusting: Relocate identifying devices as necessary for unobstructed view in finished construction.
PAINTING AND FINISHING
A.
Apply paint to exposed piping according to the following, unless otherwise indicated:
1.
2.
3.
B.
3.5
Interior, Ferrous Supports: Use semigloss, acrylic-enamel finish. Include finish coat over
enamel undercoat and primer.
Exterior, Ferrous Piping: Use semigloss, acrylic-enamel finish. Include two finish coats
over rust-inhibitive metal primer.
Exterior, Ferrous Supports: Use semigloss, acrylic-enamel finish. Include two finish
coats over rust-inhibitive metal primer.
Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and
procedures to match original factory finish.
CONCRETE BASES
A.
Construct concrete equipment bases of minimum 3-½ inches thickness and dimensions indicated, or not less than 4 inches larger than supported unit in both directions. Follow supported
equipment manufacturer’s setting templates for anchor bolt and tie locations. Use 4000-psi, 28day compressive strength concrete and reinforcement. Form concrete bases with framing lumber with form release compounds. Chamfer top edge and corners of base.
B.
Provide concrete equipment base for all floor or ground mounted equipment.
3.6
ERECTION OF METAL SUPPORTS AND ANCHORAGE
A.
3.7
Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation
to support and anchor mechanical materials and equipment.
DEMOLITION
A.
Disconnect, demolish, and remove Work specified in Division 15 Sections.
B.
If existing pipe, ductwork, insulation, or equipment noted to remain is damaged or disturbed,
remove damaged portions and install new products of equal capacity and quality.
C.
Accessible Work: Remove indicated exposed pipe and ductwork in its entirety.
D.
Work Abandoned in Place: Cut and remove underground pipe a minimum of 2 inches (50 mm)
beyond face of adjacent construction. Cap and patch surface to match existing finish.
E.
Removal: Remove indicated equipment from Project site.
F.
Temporary Disconnection: Remove, store, clean, reinstall, reconnect, and make operational
equipment indicated for relocation.
BASIC MECHANICAL MATERIALS AND METHODS
1230
15050 - 7
3.8
CUTTING AND PATCHING
A.
Cut, channel, chase, and drill floors, walls, partitions, ceilings, and other surfaces necessary for
mechanical installations. Perform cutting by skilled mechanics of trades involved.
B.
Repair cut surfaces to match adjacent surfaces.
3.9
EXCAVATION
A.
Trenching: Excavate trenches for electrical installations as follows:
1.
2.
3.
4.
B.
3.10
Excavate trenches to the uniform width, sufficiently wide to provide ample working room
and a minimum of 6 to 9 inches clearance on both sides of raceways and equipment.
Excavate trenches to depth indicated or required.
Limit the length of open trench to that in which installations can be made and the trench
backfilled within the same day.
Where rock is encountered, carry excavation below required elevation and backfill with a
layer of crushed stone or gravel prior to installation of raceways and equipment. Provide a
minimum of 6 inches of stone or gravel cushion between rock bearing surface and electrical
installations.
Subsidence: Where subsidence occurs at trench locations during the period 12 months after
Substantial Completion, remove surface treatment (i.e., pavement, lawn, or other finish), add
backfill material, compact to specified conditions, and replace surface treatment. Restore appearance, quality, and condition of surface or finish to match adjacent areas.
PREPARATION AND APPLICATION OF JOINT SEALERS
A.
Surface Cleaning for Joint Sealers: Clean surfaces of joints immediately before applying joint
sealers to comply with recommendations of joint sealer manufacturer.
B.
Apply joint sealer primer to substrates as recommended by joint sealer manufacturer. Protect
adjacent areas from spillage and migration of primers, using masking tape. Remove tape immediately after tooling without disturbing joint seal.
C.
General: Comply with joint sealer manufacturers' printed application instructions applicable to
products and applications indicated, except where more stringent requirements apply.
1.
Comply with recommendations of ASTM C 962 for use of elastomeric joint sealants.
D.
Tooling: Immediately after sealant application and prior to time shinning or curing begins, tool
sealants to form smooth, uniform beads; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint. Remove excess sealants from surfaces adjacent to joint.
Do not use tooling agents that discolor sealants or adjacent surfaces or are not approved by
sealant manufacturer.
E.
Installation of Fire-Stopping Sealant: Install sealant, including forming, packing, and other accessory materials, to fill openings around mechanical services penetrating floors and walls, to
provide fire-stops with fire-resistance ratings indicated for floor or wall assembly in which penetration occurs. Comply with installation requirements established by testing and inspecting
agency.
3.11
INSTALLATION OF ACCESS DOORS
BASIC MECHANICAL MATERIALS AND METHODS
1230
15050 - 8
A.
Set frames accurately in position and securely attached to supports, with face panels plumb and
level in relation to adjacent finish surfaces.
B.
Adjust hardware and panels after installation for proper operation.
C.
Install access doors where required for access to any equipment which becomes concealed by
other construction. Provide access door of adequate size to maintain and replace concealed
equipment.
END OF SECTION 15050
BASIC MECHANICAL MATERIALS AND METHODS
1230
15050 - 9
SECTION 15060 - HANGERS AND SUPPORTS
PART 1- GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section.
1.
2.
1.2
A.
1.3
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
SUMMARY
This Section includes hangers and supports for mechanical system piping and equipment.
DEFINITIONS
A.
MSS: Manufacturers Standardization Society for the Valve and Fittings Industry.
B.
Terminology:
Supports."
1.4
A.
1.5
As defined in MSS SP-90, "Guidelines on Terminology for Pipe Hangers and
PERFORMANCE REQUIREMENTS
Design channel support systems for piping to support multiple pipes capable of supporting
combined weight of supported systems, system contents, and test water.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15 Section
“Basic Mechanical Requirements.”
B.
Product Data: For each type of pipe hanger, channel support system component, and thermalhanger shield insert indicated.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS
Subject to compliance with requirements, provide products by one of the following:
1.
Pipe Hangers:
a.
b.
2.
B-Line Systems, Inc.
Grinnell Corp.
Channel Support Systems:
a.
B-Line Systems, Inc.
HANGERS AND SUPPORTS
1230
15060 - 1
b.
c.
d.
3.
Powder-Actuated Fastener Systems:
a.
b.
c.
d.
e.
4.
A.
to
Pipe Hangers, Supports, and Components: MSS SP-58, factory-fabricated components. Refer
"Hanger and Support Applications" Article in Part 3 for where to use specific hanger and support
types.
2.3
Galvanized, Metallic Coatings: For piping and equipment that will not have field-applied
finish.
Channel Support Systems: MFMA-2, factory-fabricated components for field assembly.
1.
2.
C.
Miro Industries, Inc.
MANUFACTURED UNITS
1.
B.
Gunnebo Fastening Corp.
Hilti, Inc.
ITW Ramset/Red Head.
Masterset Fastening Systems, Inc.
Rawl.
Roof Pipe Stands:
a.
2.2
Grinnell Corp.; Power-Strut Unit.
Thomas & Betts Corp.
Unistrut Corp.
Coatings: Manufacturer's standard finish, unless bare metal surfaces are indicated.
Nonmetallic Coatings: On attachments for electrolytic protection where attachments are
in direct contact with copper tubing.
Roof Pipe Stands: Nylon roller situated in a polycarbonate resin seat.
MISCELLANEOUS MATERIALS
A.
out
Powder-Actuated Drive-Pin Fasteners: Powder-actuated-type, drive-pin attachments with pulland shear capacities appropriate for supported loads and building materials where used.
B.
Mechanical-Anchor Fasteners: Insert-type attachments with pull-out and shear capacities
appropriate for supported loads and building materials where used.
C.
Structural Steel: ASTM A 36/A 36M, steel plates, shapes, and bars, black and galvanized.
D.
Grout: ASTM C 1107, Grade B, factory-mixed and -packaged, nonshrink and nonmetallic, dry,
hydraulic-cement grout.
1.
2.
3.
Characteristics: Post hardening and volume adjusting; recommended for both interior
and exterior applications.
Properties: Nonstaining, noncorrosive, and nongaseous.
Design Mix: 5000-psi (34.5-MPa), 28-day compressive strength.
PART 3- EXECUTION
3.1
A.
HANGER AND SUPPORT APPLICATIONS
Comply with MSS SP-69 for pipe hanger selections and applications that are not specified in
HANGERS AND SUPPORTS
1230
15060 - 2
piping system Specification Sections.
B.
Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in
piping system Specification Sections, install the following types:
1.
C.
Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system
Specification Sections, install the following types:
1.
D.
Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers, NPS 3/4 to
NPS 20 (DN20 to DN500).
Roof Pipe Stands: Unless otherwise indicated install the following type on built-up and single-ply
roofing membranes.
1.
3.2
Adjustable Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or
insulated stationary pipes, NPS 1/2 to NPS 30 (DN15 to DN750).
Roller-Bearing Pipe Support: For support of pipes, NPS 3/4 to NPS 4 (DN 20 to DN 100)
from nylon roller if longitudinal movement caused by expansion and contraction might
occur, as well as some lateral.
HANGER AND SUPPORT INSTALLATION
A.
Pipe Hanger and Support Installation: Comply with MSS SP-69 and MSS SP-89. Install
hangers, supports, clamps, and attachments as required to properly support piping from building
structure.
B.
Channel Support System Installation: Arrange for grouping of parallel runs of piping and support
together on field-assembled channel systems.
1.
Field assemble and install according to manufacturer's written instructions.
C.
Roof Pipe Stand Installation: Install pipe stand as recommended by manufacturer to properly
support piping on building structure and secure piping to pipe stand. Make certain each pipe
stand is properly elevated to even load weight at all pipe stands.
D.
Install powder-actuated drive-pin fasteners in concrete after concrete is placed and completely
cured. Use operators that are licensed by powder-actuated tool manufacturer. Install fasteners
according to powder-actuated tool manufacturer's operating manual.
E.
Install hangers and supports complete with necessary inserts, bolts, rods, nuts, washers, and
other accessories.
E.
Load Distribution: Install hangers and supports so that piping live and dead loads and stresses
from movement will not be transmitted to connected equipment.
3.3
A.
3.4
A.
EQUIPMENT SUPPORTS
Fabricate structural-steel stands to suspend equipment from structure above or to support
equipment above grade.
METAL FABRICATION
Cut, drill, and fit miscellaneous metal fabrications for heavy-duty steel trapezes and equipment
supports.
HANGERS AND SUPPORTS
1230
15060 - 3
B.
3.5
Fit exposed connections together to form hairline joints. Field-weld connections that cannot be
shop-welded because of shipping size limitations.
PAINTING
A.
Touching Up: Clean field welds and abraded areas of shop paint. Paint exposed areas
immediately after erecting hangers and supports. Use same materials as used for shop painting.
B.
Comply with SSPC-PA 1 requirements for touching up field-painted surfaces.
1.
C.
Apply paint by brush or spray to provide a minimum dry film thickness of 2.0 mils
(0.05 mm).
Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply
galvanizing-repair paint to comply with ASTM A 780.
END OF SECTION 15060
HANGERS AND SUPPORTS
1230
15060 - 4
SECTION 15080 - MECHANICAL INSULATION
PART 1 - GENERAL
1.1
SUMMARY
A.
This Section includes basic requirements for the installation of mechanical insulation.
B.
Refer to Section 15815 for ductwork insulation requirements.
1.2
A.
SUBMITTALS
Product Data for Mechanical Insulation: Schedule of insulation applications and thickness for
each application and/or pipe size.
PART 2 - PRODUCTS
2.1
A.
GENERAL
Insulation, Jackets, Adhesive, and Coatings Shall Comply with the following:
1.
2.
3.
2.2
A.
MANUFACTURERS
Provide mechanical insulation from one of the following manufacturers:
1.
2.
3.
4.
5.
2.3
Treatment of jackets or facing for flame and smoke safety must be permanent. Watersoluble treatments not permitted.
Insulation, including finishes and adhesives on the exterior surfaces of ducts, pipes, and
equipment, shall have a flame spread rating of 25 or less and a smoke development
rating of 50 or less.
All elastomeric foam insulation install outdoors shall receive (2) coats of a white latex
paint as recommended by the manufacturer to prevent sun damage.
Armstrong
Johns-Manville
Knauf.
Owens-Corning
Approved Equal.
PIPE INSULATION
A. Preformed rigid sectional pipe covering, 3-1/2-lb/ft3 nominal density. Maximum thermal conductivity
(k), on a flat surface, shall be 0.24 Btu/sq. ft. °F/in. at 75 °F mean temperature. White Kraft outer
surface bonded to aluminum foil and reinforced with fiberglass yarn (ASJ).
B. Flexible, closed cell, elastomeric foam insulation, shall have a maximum thermal conductivity of
0.27 BTUH/In./h-ft2-deg.F at a mean temperature of 75 deg.F as tested in accordance with ASTM
C 177 or ASTM C 518. Insulation shall have a flame spread index of less than 25 and a smoke
developed index of less than 50 as tested in accordance with ASTM E84. Exterior insulation
2.4
A.
MATERIALS AND SCHEDULES
See Appendixes at the end of this section.
MECHANICAL INSULATION
1230
15080 - 1
PART 3 - EXECUTION
3.1
GENERAL REQUIREMENTS
A.
Provide thermal insulation of piping, and equipment (as applicable) unless otherwise indicated.
B.
On clean, dry surfaces and after piping and equipment (as applicable) have been tested.
C.
All piping shall be individually insulated.
D.
Do not cover pipe joints with insulation until required tests are completed.
3.02
PIPE INSULATION
A.
Insulate piping systems including fittings, valves, flanges, unions, strainers, and other
attachments installed in piping system, whether exposed or concealed.
B.
Hanger Shields:
1.
C.
Joints in section pipe covering made as follows:
1.
2.
D.
2.
3.
A.
Standard: Longitudinal laps and butt joint sealing strips with factory supplied pressure
sensitive adhesive lap seal.
Vapor barrier: For cold services, Longitudinal laps and 4 in. vapor barrier strip at butt
joints shall be sealed with white BF 85-20. Seal ends of pipe insulation at valves, flanges,
and fittings with white BF 85-20.
Fittings, Valves and Flanges:
1.
3.3
Pre-Insulated Type: Butt insulation to hanger shields and apply a wet coat of vapor
barrier cement to the joints and seal with 3 in. wide vapor barrier tape.
Pre-molded fitting insulation of the same material and thickness as the adjacent pipe
insulation
20-mil thick white PVC jacketing, with continuous solvent weld of all seams. Tape all
fittings.
Equal to Zeston 2000, or Proto System.
CLEANING
After completing equipment installation, inspect unit components. Remove paint splatters and
other spots, dirt, and debris. Repair damaged finish to match original finish.
APPENDIX A – PIPE INSULATION SCHEDULE
Insulation Material
Service
Domestic Cold Water
Fiberglass
Pipe Sizes
All
Thickness
1/2”
Domestic Hot Water
and Hot Water Circ.
Fiberglass
All
1/2”
Refrigerant Piping and
Condensate Piping (all)
Elastomeric
Foam
All
3/4”
END OF SECTION 15080
MECHANICAL INSULATION
1230
15080 - 2
SECTION 15110 - VALVES
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate
to this Section.
1.
2.
1.2
A.
SUMMARY
This Section includes the following general-duty valves:
1.
2.
1.3
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
Copper-alloy ball valves.
Bronze check valves.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division
15 Section “Basic Mechanical Requirements.”
B.
Product Data: For each type of valve indicated. Include body, seating, and trim
materials; valve design; pressure and temperature classifications; end connections;
arrangement; dimensions; and required clearances. Include list indicating valve and its
application. Include rated capacities; shipping, installed, and operating weights;
furnished specialties; and accessories.
1.4
A.
QUALITY ASSURANCE
ASME Compliance: ASME B31.9 for building services piping valves.
1.
B.
Exceptions: Domestic hot- and cold-water piping valves unless referenced.
NSF Compliance: NSF 61 for valve materials for potable-water service.
PART 2 - PRODUCTS
2.1
VALVES
MANUFACTURERS
1230
15110 - 1
A.
2.2
Subject to compliance with requirements, provide products by the manufacturers
specified.
VALVES, GENERAL
A.
Refer to Part 3 "Valve Applications" Article for applications of valves.
B.
Bronze Valves:
indicated.
C.
Valve Pressure and Temperature Ratings: Not less than indicated and as required for
system pressures and temperatures.
D.
Valve Sizes: Same as upstream pipe, unless otherwise indicated.
E.
Valve Actuators:
1.
F.
2.3
NPS 2 (DN 50) and smaller with threaded ends, unless otherwise
Lever Handle: For quarter-turn valves NPS 6 (DN 150) and smaller, except plug
valves.
Extended Valve Stems: On insulated valves.
COPPER-ALLOY BALL VALVES
A.
Available Manufacturers:
B.
Manufacturers:
1.
Two-Piece, Copper-Alloy Ball Valves:
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
Conbraco Industries, Inc.; Apollo Div.
Crane Co.; Crane Valve Group; Crane Valves.
Crane Co.; Crane Valve Group; Jenkins Valves.
Crane Co.; Crane Valve Group; Stockham Div.
Flow-Tek, Inc.
Grinnell Corporation.
Milwaukee Valve Company.
Nexus Valve Specialties.
NIBCO INC.
Watts Industries, Inc.; Water Products Div.
C.
Copper-Alloy Ball Valves, General: MSS SP-110.
D.
Two-Piece, Copper-Alloy Ball Valves: Bronze body with full-port, chrome-plated
bronze ball; PTFE or TFE seats; and 600-psig (minimum CWP rating and blowoutproof stem.
2.4
A.
VALVES
BRONZE CHECK VALVES
Manufacturers:
1230
15110 - 2
1.
Bronze, Horizontal Lift Check Valves with Metal Disc:
a.
b.
c.
d.
e.
Cincinnati Valve Co.
Crane Co.; Crane Valve Group; Crane Valves.
Crane Co.; Crane Valve Group; Stockham Div.
Red-White Valve Corp.
Walworth Co.
B.
Bronze Check Valves, General: MSS SP-80.
C.
Type 1, Class 125, Bronze, Horizontal Lift Check Valves: Bronze body with bronze
disc and seat.
PART 3 - EXECUTION
3.1
A.
EXAMINATION
Examine piping system for compliance with requirements for installation tolerances and
other conditions affecting performance.
1.
Proceed with installation only after unsatisfactory conditions have been
corrected.
B.
Examine valve interior for cleanliness, freedom from foreign matter, and corrosion.
Remove special packing materials, such as blocks, used to prevent disc movement
during shipping and handling.
C.
Operate valves in positions from fully open to fully closed. Examine guides and seats
made accessible by such operations.
D.
Examine threads on valve and mating pipe for form and cleanliness.
E.
Examine mating flange faces for conditions that might cause leakage. Check bolting
for proper size, length, and material. Verify that gasket is of proper size, that its
material composition is suitable for service, and that it is free from defects and
damage.
F.
Do not attempt to repair defective valves; replace with new valves.
3.2
A.
VALVE APPLICATIONS
Refer to piping Sections for specific valve applications. If valve applications are not
indicated, use the following:
1.
B.
Domestic Water Piping: Use the following types of valves:
1.
VALVES
Shutoff Service: Ball valves.
Ball Valves, NPS 4” (DN 50) and Smaller:
copper alloy.
1230
Two-piece, 400-psig CWP rating,
15110 - 3
C.
Select valves with the following end connections:
1.
2.
3.3
For Copper Tubing, NPS 2 (DN 50) and Smaller: Solder-joint or threaded ends,
except provide valves with threaded ends for [condenser water,] heating hot
water, steam, and steam condensate services.
For Copper Tubing, NPS 2-1/2 to NPS 4 (DN 65 to DN 100): Flanged or
threaded ends.
VALVE INSTALLATION
A.
Piping installation requirements are specified in other Division 15 Sections. Drawings
indicate general arrangement of piping, fittings, and specialties.
B.
Install valves with unions or flanges at each piece of equipment arranged to allow
service, maintenance, and equipment removal without system shutdown.
C.
Locate valves for easy access and provide separate support where necessary.
D.
Install valves in horizontal piping with stem at or above center of pipe.
E.
Install valves in position to allow full stem movement.
F.
Install check valves for proper direction of flow and as follows:
1.
3.4
Swing Check Valves: In horizontal position with hinge pin level.
JOINT CONSTRUCTION
A.
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping
joint construction.
B.
Grooved Joints: Assemble joints with keyed coupling housing, gasket, lubricant, and
bolts according to coupling and fitting manufacturer's written instructions.
C.
Soldered Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, leadfree-alloy solder; and ASTM B 828 procedure, unless otherwise indicated.
3.5
A.
ADJUSTING
Adjust or replace valve packing after piping systems have been tested and put into
service but before final adjusting and balancing. Replace valves if persistent leaking
occurs.
END OF SECTION 15110
VALVES
1230
15110 - 4
SECTION 15140 - DOMESTIC WATER PIPING
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections include the following:
1.
2.
3.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Plumbing Specialties” for water distribution piping specialties.
SUMMARY
A.
1.3
This Section includes domestic water piping from locations indicated to fixtures and equipment
inside the building.
PERFORMANCE REQUIREMENTS
A.
Provide components and installation capable of producing domestic water piping systems with
the following minimum working-pressure ratings, unless otherwise indicated:
1.
1.4
Domestic Water Distribution Piping: 125 psig (860 kPa).
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product Data: For pipe, tube, fittings, and couplings.
1.5
QUALITY ASSURANCE
A.
Piping materials shall bear label, stamp, or other markings of specified testing agency.
PART 2 - PRODUCTS
2.1
PIPING MATERIALS
A.
2.2
Refer to Part 3 "Piping Applications" Article for applications of pipe, tube, fitting, and joining
materials.
COPPER TUBING
DOMESTIC WATER PIPING
1230
15140 - 1
A.
Soft Copper Tube: ASTM B 88, Types M water tube, annealed temper.
1.
2.
3.
B.
Hard Copper Tube: ASTM B 88, Types L and M (ASTM B 88M, Types B and C), water tube,
drawn temper.
1.
2.
3.
2.3
Copper Pressure Fittings: ASME B16.18, cast-copper-alloy or ASME B16.22, wroughtcopper, solder-joint fittings. Furnish wrought-copper fittings if indicated.
Bronze Flanges: ASME B16.24, Class 150, with solder-joint end. Furnish Class 300
flanges if required to match piping.
Copper Unions: MSS SP-123, cast-copper-alloy, hexagonal-stock body, with ball-andsocket, metal-to-metal seating surfaces and solder-joint or threaded ends.
Copper Pressure Fittings: ASME B16.18, cast-copper-alloy or ASME B16.22, wroughtcopper, solder-joint fittings. Furnish wrought-copper fittings if indicated.
Bronze Flanges: ASME B16.24, Class 150, with solder-joint end. Furnish Class 300
flanges if required to match piping.
Copper Unions: MSS SP-123, cast-copper-alloy, hexagonal-stock body, with ball-andsocket, metal-to-metal seating surfaces and solder-joint or threaded ends.
VALVES
A.
Refer to Division 15 Section "Valves" for bronze and cast-iron, general-duty valves.
B.
Refer to Division 15 Section "Plumbing Specialties" for balancing and drain valves.
PART 3 - EXECUTION
3.1
EXCAVATION
A.
3.2
Refer to other sections for excavating, trenching, and backfilling.
PIPING APPLICATIONS
A.
Transition and special fittings with pressure ratings at least equal to piping rating may be used
in applications below, unless otherwise indicated.
B.
Underground Domestic Water Service Piping: Use the following piping materials for each size
range:
1.
C.
Aboveground Domestic Water Piping: Use the following piping materials for each size range:
1.
3.3
NPS 4 and Smaller: Soft copper tube, Type M; copper pressure fittings; and soldered
joints.
NPS 4 and smaller: Hard copper tube, Type L; copper pressure fittings; and soldered
joints.
VALVE APPLICATIONS
A.
Drawings indicate valve types to be used. Where specific valve types are not indicated, the
following requirements apply:
DOMESTIC WATER PIPING
1230
15140 - 2
1.
2.
3.
4.
3.4
PIPING INSTALLATION
A.
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping
installation.
B.
Extend domestic water service piping to exterior water distribution piping in sizes and locations
indicated.
C.
Install underground copper tubing according to CDA's "Copper Tube Handbook."
D.
Install wall penetration system at each service pipe penetration through foundation wall. Make
installation watertight. Refer to Division 15 Section "Basic Mechanical Materials and Methods"
for wall penetration systems.
E.
Install shutoff valve, inside building at each domestic water service. to Division 15
Section "Plumbing Specialties" for drain valves and strainers.
F.
Install aboveground domestic water piping with 0.25 percent slope downward toward drain to
allow winterization of piping systems.
G.
Fill water piping. Check components to determine that they are not air bound and that piping is
full of water.
H.
Perform the following steps before operation:
1.
2.
3.
4.
5.
Close drain valves, hydrants, and hose bibbs.
Open shutoff valves to fully open position.
Open throttling valves to proper setting.
Remove plugs used during testing of piping and plugs used for temporary sealing of
piping during installation.
Remove and clean strainer screens. Close drain valves and replace drain plugs.
I.
Check plumbing equipment and verify proper settings, adjustments, and operation. Do not
operate water heaters before filling with water.
J.
Check plumbing specialties and verify proper settings, adjustments, and operation.
K.
Energize pumps and verify proper operation.
3.5
3.6
Shutoff Duty: Use bronze ball valves for piping NPS 2 (DN 50) and smaller
Throttling Duty: Use bronze ball for piping NPS 2 (DN 50) and smaller
Hot-Water-Piping, Balancing Duty: Use bronze ball (with memory-stop) balancing valves.
Drain Duty: Hose-end drain valves.
JOINT CONSTRUCTION
A.
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping joint
construction.
B.
Soldered Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead-free-alloy
solder; and ASTM B 828 procedure, unless otherwise indicated.
VALVE INSTALLATION
DOMESTIC WATER PIPING
1230
15140 - 3
A.
Install sectional valve close to water main on each branch and riser serving plumbing fixtures or
equipment. Use ball valves for piping NPS 2 (DN 50) and smaller. Use butterfly or gate valves
for piping NPS 2-1/2 (DN 65) and larger.
B.
Install shutoff valve on each water supply to equipment and on each water supply to plumbing
fixtures without supply stops. Use ball for piping NPS 2 (DN 50) and smaller. Use butterfly or
gate valves for piping NPS 2-1/2 (DN 65) and larger.
C.
Install drain valves for equipment, at base of each water riser, at low points in horizontal piping,
and where required to drain water piping.
1.
2.
D.
3.7
Install hose-end drain valves at low points in water mains, risers, and branches.
Install stop-and-waste drain valves where indicated.
Install balancing valve in each hot-water circulation return branch and discharge side of each
pump and circulator. Set balancing valves partly open to restrict but not stop flow. Use ball
valves for piping NPS 2 (DN 50) and smaller and butterfly valves for piping NPS 2-1/2 (DN 65)
and larger. Refer to Division 15 Section "Plumbing Specialties" for balancing valves.
HANGER AND SUPPORT INSTALLATION
A.
Refer to Division 15 Section "Hangers and Supports" for pipe hanger and support devices.
Install the following:
1.
2.
Vertical Piping: MSS Type 8 or Type 42 clamps.
Individual, Straight, Horizontal Piping Runs: According to the following:
a.
B.
Install supports according to Division 15 Section "Hangers and Supports."
C.
Support vertical piping and tubing at base and at each floor.
D.
Rod diameter may be reduced 1 size for double-rod hangers, to a minimum of 3/8 inch (10 mm).
E.
Install supports for vertical steel piping every 15 feet (4.5 m).
F.
Install hangers for copper tubing with the following maximum horizontal spacing and minimum
rod diameters:
1.
2.
3.
4.
5.
3.8
MSS Type 1, adjustable, steel clevis hangers.
NPS 3/4 (DN 20) and Smaller: 60 inches (1500 mm) with 3/8-inch (10-mm) rod.
NPS 1 and NPS 1-1/4 (DN 25 and DN 32): 72 inches (1800 mm) with 3/8-inch (10-mm)
rod.
NPS 1-1/2 and NPS 2 (DN 40 and DN 50): 96 inches (2400 mm) with 3/8-inch (10-mm)
rod.
NPS 2-1/2 (DN 65): 108 inches (2700 mm) with 1/2-inch (13-mm) rod.
NPS 3 to NPS 5 (DN 80 to DN 125): 10 feet (3 m) with 1/2-inch (13-mm) rod.
G.
Install supports for vertical copper tubing every 10 feet (3 m).
H.
Support piping and tubing not listed above according to MSS SP-69 and manufacturer's written
instructions.
CONNECTIONS
DOMESTIC WATER PIPING
1230
15140 - 4
A.
Drawings indicate general arrangement of piping, fittings, and specialties.
B.
Install piping adjacent to equipment and machines to allow service and maintenance.
C.
Connect domestic water piping to exterior water service piping. Use transition fitting to join
dissimilar piping materials.
D.
Connect domestic water piping to service piping with shutoff valve, and extend and connect to
the following:
1.
2.
3.
3.9
Water Heaters: Cold-water supply and hot-water outlet piping in sizes indicated, but not
smaller than sizes of water heater connections.
Plumbing Fixtures: Cold- and hot-water supply piping in sizes indicated, but not smaller
than required by plumbing code. Refer to Division 15 Section "Plumbing Fixtures."
Equipment: Cold- and hot-water supply piping as indicated, but not smaller than
equipment connections. Provide shutoff valve and union for each connection. Use
flanges instead of unions for NPS 2-1/2 (DN 65) and larger.
FIELD QUALITY CONTROL
A.
Inspect domestic water piping as follows:
1.
2.
Do not enclose, cover, or put piping into operation until it is inspected and approved by
authorities having jurisdiction.
During installation, notify authorities having jurisdiction at least 24 hours before inspection
must be made. Perform tests specified below in presence of authorities having
jurisdiction:
a.
b.
3.
B.
2.
3.
4.
A.
Reinspection: If authorities having jurisdiction find that piping will not pass test or
inspection, make required corrections and arrange for reinspection.
Test domestic water piping as follows:
1.
3.10
Roughing-in Inspection: Arrange for inspection of piping before concealing or
closing-in after roughing-in and before setting fixtures.
Final Inspection: Arrange for final inspection by authorities having jurisdiction to
observe tests specified below and to ensure compliance with requirements.
Test for leaks and defects in new piping and parts of existing piping that have been
altered, extended, or repaired. If testing is performed in segments, submit separate
report for each test, complete with diagram of portion of piping tested.
Leave uncovered and unconcealed new, altered, extended, or replaced domestic water
piping until it has been tested and approved. Expose work that was covered or
concealed before it was tested.
Cap and subject piping to static water pressure of 50 psig (345 kPa) above operating
pressure, without exceeding pressure rating of piping system materials. Isolate test
source and allow to stand for four hours. Leaks and loss in test pressure constitute
defects that must be repaired.
Repair leaks and defects with new materials and retest piping or portion thereof until
satisfactory results are obtained.
ADJUSTING
Adjust balancing valves in hot-water-circulation return piping to provide adequate flow.
DOMESTIC WATER PIPING
1230
15140 - 5
1.
2.
3.11
A.
Manually adjust ball-type balancing valves in hot-water-circulation return piping to provide
flow of hot water in each branch.
Adjust calibrated balancing valves to flows indicated.
CLEANING
Clean and disinfect potable domestic water piping as follows:
1.
2.
Purge new piping and parts of existing domestic water piping that have been altered,
extended, or repaired before using.
Use purging and disinfecting procedures prescribed by authorities having jurisdiction or, if
methods are not prescribed, procedures described in either AWWA C651 or
AWWA C652 or as described below:
a.
b.
Flush piping system with clean, potable water until dirty water does not appear at
outlets.
Fill and isolate system according to either of the following:
1)
c.
d.
Fill system or part thereof with water/chlorine solution with at least 50 ppm
(50 mg/L) of chlorine. Isolate with valves and allow to stand for 24 hours.
Flush system with clean, potable water until no chlorine is in water coming from
system after the standing time.
Submit water samples in sterile bottles to authorities having jurisdiction. Repeat
procedures if biological examination shows contamination.
B.
Prepare and submit reports of purging and disinfecting activities.
C.
Clean interior of domestic water piping system. Remove dirt and debris as work progresses.
END OF SECTION 15140
DOMESTIC WATER PIPING
1230
15140 - 6
SECTION 15150 - SANITARY WASTE AND VENT PIPING
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section.
1.
2.
3.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Plumbing Specialties” for soil, waste, and vent piping systems specialties.
SUMMARY
A.
1.3
This Section includes soil and waste, sanitary drainage and vent piping inside the building and
to locations indicated.
DEFINITIONS
A.
The following are industry abbreviations for plastic piping materials:
1.
1.4
PVC: Polyvinyl chloride plastic.
PERFORMANCE REQUIREMENTS
A.
Provide components and installation capable of producing piping systems with the following
minimum working-pressure ratings, unless otherwise indicated:
1.
1.5
Soil, Waste, and Vent Piping: 10-foot head of water.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product Data: For pipe, tube, fittings, and couplings.
1.6
QUALITY ASSURANCE
A.
Piping materials shall bear label, stamp, or other markings of specified testing agency.
B.
Comply with NSF 14, "Plastics Piping Systems Components and Related Materials," for plastic
piping components. Include marking with "NSF-DWV" for plastic drain, waste, and vent piping;
"NSF-drain" for plastic drain piping; "NSF-tubular" for plastic continuous waste piping; and
"NSF-sewer" for plastic sewer piping.
SANITARY WASTE AND VENT PIPING
1230
15150 - 1
PART 2 - PRODUCTS
2.1
PIPING MATERIALS
A.
2.2
Refer to Part 3 "Piping Applications" Article for applications of pipe, tube, fitting, and joining
materials.
PVC PIPING
A.
PVC Pipe: ASTM D 2665, solid-wall drain, waste, and vent.
1.
PVC Socket Fittings: ASTM D 2665, socket type, made to ASTM D 3311, drain, waste,
and vent patterns.
PART 3 - EXECUTION
3.1
EXCAVATION
A.
3.2
Refer to other sections for excavating, trenching, and backfilling.
PIPING APPLICATIONS
A.
Transition and special fittings with pressure ratings at least equal to piping pressure ratings may
be used in applications below, unless otherwise indicated.
B.
Aboveground, Soil, Waste, and Vent Piping: Use any of the following piping materials for each
size range:
1.
C.
Underground, Soil, Waste, and Vent Piping: Use the following piping materials for each size
range:
1.
3.3
NPS 1-1/4 through NPS 4: Schedule 40, PVC pipe; PVC socket fittings; and solventcemented joints.
NPS 1-1/4 through NPS 4: Schedule 40, PVC pipe; PVC socket fittings; and solventcemented joints.
PIPING INSTALLATION
A.
Refer to Division 2 Section "Sanitary Sewerage" for Project-site sanitary sewer piping.
B.
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping
installation.
C.
Install cleanouts at grade and extend to where building sanitary drains connect to building
sanitary sewers.
D.
Install wall penetration system at each service pipe penetration through foundation wall. Make
installation watertight. Refer to Division 15 Section "Basic Mechanical Materials and Methods"
for wall penetration systems.
SANITARY WASTE AND VENT PIPING
1230
15150 - 2
E.
Make changes in direction for soil and waste drainage and vent piping using appropriate
branches, bends, and long-sweep bends. Sanitary tees and short-sweep 1/4 bends may be
used on vertical stacks if change in direction of flow is from horizontal to vertical. Use long-turn,
double Y-branch and 1/8-bend fittings if 2 fixtures are installed back to back or side by side with
common drain pipe. Straight tees, elbows, and crosses may be used on vent lines. Do not
change direction of flow more than 90 degrees. Use proper size of standard increasers and
reducers if pipes of different sizes are connected. Reducing size of drainage piping in direction
of flow is prohibited.
F.
Lay buried building drainage piping beginning at low point of each system. Install true to grades
and alignment indicated, with unbroken continuity of invert. Place hub ends of piping upstream.
Install required gaskets according to manufacturer's written instructions for use of lubricants,
cements, and other installation requirements. Maintain swab in piping and pull past each joint
as completed.
G.
Install soil and waste drainage and vent piping at the following minimum slopes, unless
otherwise indicated:
1.
2.
3.
Building Sanitary Drain: 2 percent downward in direction of flow for piping NPS 3
(DN 80) and smaller; 1 percent downward in direction of flow for piping NPS 4 (DN 100)
and larger.
Horizontal Sanitary Drainage Piping: 2 percent downward in direction of flow.
Vent Piping: 1 percent down toward vertical fixture vent or away from vent stack.
H.
Install PVC soil and waste drainage and vent piping according to ASTM D 2665.
I.
Do not enclose, cover, or put piping into operation until it is inspected and approved by
authorities having jurisdiction.
3.4
JOINT CONSTRUCTION
A.
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping joint
construction.
B.
PVC Non-pressure Piping Joints: Join piping according to ASTM D 2665.
3.5
HANGER AND SUPPORT INSTALLATION
A.
Refer to Division 15 Section "Hangers and Supports" for pipe hanger and support devices.
Install the following:
1.
2.
Vertical Piping: MSS Type 8 or Type 42, clamps.
Individual, Straight, Horizontal Piping Runs: According to the following:
a.
b.
c.
100 Feet (30 m) and Less: MSS Type 1, adjustable, steel clevis hangers.
Longer Than 100 Feet (30 m): MSS Type 43, adjustable roller hangers.
Longer Than 100 Feet (30 m), if Indicated: MSS Type 49, spring cushion rolls.
B.
Install supports according to Division 15 Section "Hangers and Supports."
C.
Support vertical piping and tubing at base and at each floor.
D.
Install supports for vertical steel piping every 15 feet (4.5 m).
E.
Install hangers for PVC piping with the following maximum horizontal spacing and minimum rod
diameters:
SANITARY WASTE AND VENT PIPING
1230
15150 - 3
1.
2.
3.
NPS 1-1/2 and NPS 2 (DN 40 and DN 50): 48 inches (1200 mm) with 3/8-inch (10-mm)
rod.
NPS 3 (DN 80): 48 inches (1200 mm) with 1/2-inch (13-mm) rod.
NPS 4 and NPS 5 (DN 100 and DN 125): 48 inches (1200 mm) with 5/8-inch (16-mm)
rod.
F.
Install supports for vertical PVC piping every 48 inches.
G.
Support piping and tubing not listed above according to MSS SP-69 and manufacturer's written
instructions.
3.6
CONNECTIONS
A.
Drawings indicate general arrangement of piping, fittings, and specialties.
B.
Connect new soil and waste piping to existing building piping as indicated. Use transition fitting
to join dissimilar piping materials.
C.
Connect drainage and vent piping to the following:
1.
2.
3.
4.
3.7
Plumbing Fixtures: Connect drainage piping in sizes indicated, but not smaller than
required by plumbing code. Refer to Division 15 Section "Plumbing Fixtures."
Plumbing Fixtures and Equipment: Connect atmospheric vent piping in sizes indicated,
but not smaller than required by authorities having jurisdiction.
Plumbing Specialties: Connect drainage and vent piping in sizes indicated, but not
smaller than required by plumbing code. Refer to Division 15 Section "Plumbing
Specialties."
Equipment: Connect drainage piping as indicated. Provide shutoff valve, if indicated,
and union for each connection. Use flanges instead of unions for connections NPS 2-1/2
(DN 65) and larger.
FIELD QUALITY CONTROL
A.
During installation, notify authorities having jurisdiction at least 24 hours before inspection must
be made. Perform tests specified below in presence of authorities having jurisdiction.
1.
2.
Roughing-in Inspection: Arrange for inspection of piping before concealing or closing-in
after roughing-in and before setting fixtures.
Final Inspection: Arrange for final inspection by authorities having jurisdiction to observe
tests specified below and to ensure compliance with requirements.
B.
Reinspection: If authorities having jurisdiction find that piping will not pass test or inspection,
make required corrections and arrange for reinspection.
C.
Test sanitary drainage and vent piping according to procedures of authorities having jurisdiction
or, in absence of published procedures, as follows:
1.
2.
3.
Test for leaks and defects in new piping and parts of existing piping that have been
altered, extended, or repaired. If testing is performed in segments, submit separate
report for each test, complete with diagram of portion of piping tested.
Leave uncovered and unconcealed new, altered, extended, or replaced drainage and
vent piping until it has been tested and approved. Expose work that was covered or
concealed before it was tested.
Roughing-in Plumbing Test Procedure: Test drainage and vent piping, except outside
leaders, on completion of roughing-in. Close openings in piping system and fill with water
to point of overflow, but not less than 10-foot head of water (30 kPa). From 15 minutes
SANITARY WASTE AND VENT PIPING
1230
15150 - 4
4.
5.
6.
3.8
before inspection starts to completion of inspection, water level must not drop. Inspect
joints for leaks.
Finished Plumbing Test Procedure: After plumbing fixtures have been set and traps filled
with water, test connections and prove they are gastight and watertight. Plug vent-stack
openings on roof and building drains where they leave building. Introduce air into piping
system equal to pressure of 1-inch wg (250 Pa). Use U-tube or manometer inserted in
trap of water closet to measure this pressure. Air pressure must remain constant without
introducing additional air throughout period of inspection. Inspect plumbing fixture
connections for gas and water leaks.
Repair leaks and defects with new materials and retest piping, or portion thereof, until
satisfactory results are obtained.
Prepare reports for tests and required corrective action.
CLEANING
A.
Clean interior of piping. Remove dirt and debris as work progresses.
B.
Protect drains during remainder of construction period to avoid clogging with dirt and debris and
to prevent damage from traffic and construction work.
C.
Place plugs in ends of uncompleted piping at end of day and when work stops.
3.9
PROTECTION
A.
Exposed PVC Piping: Protect plumbing vents exposed to sunlight with two coats of waterbased latex paint.
END OF SECTION 15150
SANITARY WASTE AND VENT PIPING
1230
15150 - 5
SECTION 15183 - REFRIGERANT PIPING
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section.
1.
2.
3.
4.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Mechanical Insulation”
"Hangers and Supports" for pipe supports and installation requirements.
SUMMARY
A.
1.3
This Section includes refrigerant piping used for VRV air-conditioning applications.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product Data: For each type of valve and refrigerant piping specialty indicated.
C.
Shop Drawings: Show layout of refrigerant piping and specialties, including pipe, tube, and
fitting sizes, flow capacities, valve arrangements and locations, slopes of horizontal runs, oil
traps, wall and floor penetrations, and equipment connection details. Show interface and spatial
relationship between piping and equipment.
1.
1.4
Refrigerant piping indicated is schematic only. Size piping and design the actual piping
layout, including oil traps, specialties, and pipe and tube sizes, to ensure proper
operation and compliance with warranties of connected equipment.
QUALITY ASSURANCE
A.
ASME Standard: Comply with ASME B31.5, "Refrigeration Piping."
B.
UL Standard: Provide products complying with UL 207, "Refrigerant-Containing Components
and Accessories, Nonelectrical"; or UL 429, "Electrically Operated Valves."
1.5
COORDINATION
A.
Coordinate layout and installation of refrigerant piping and suspension system components with
other construction, including light fixtures, HVAC equipment, fire-suppression-system
components, and partition assemblies.
REFRIGERANT PIPING
1230
15183 - 1
B.
Coordinate pipe sleeve installations for foundation wall penetrations.
C.
Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items
are specified in other sections.
D.
Coordinate pipe sleeve installations for penetrations in wall and floor assemblies. Coordinate
with requirements for fire-stopping specified in other sections for materials and methods for
sealing pipe penetrations through fire and smoke barriers.
E.
Coordinate pipe fitting pressure classes with products specified in related Sections.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Subject to compliance with requirements, provide products by one of the following:
1.
Refrigerants:
a.
b.
2.
Refrigerant Valves and Specialties:
a.
b.
c.
2.2
Allied Signal, Inc./Fluorine Products; Genetron Refrigerants.
DuPont Company; Fluorochemicals Div.
Climate & Industrial Controls Group; Parker-Hannifin Corp.; Refrigeration & Air
Conditioning Division.
Danfoss Electronics, Inc.
Sporlan Valve Company.
COPPER TUBE AND FITTINGS
A.
Drawn-Temper Copper Tube: Type ACR.
B.
Annealed-Temper Copper Tube: Type ACR.
C.
Wrought-Copper Fittings: ASME B16.22.
2.3
VALVES
A.
2.4
Service Valves: 500-psig (3450-kPa) pressure rating; forged-brass body with copper stubs,
brass caps, removable valve core, integral ball check valve, and with brazed-end connections.
REFRIGERANTS
A.
R-410A
PART 3 - EXECUTION
3.1
PIPING APPLICATIONS
REFRIGERANT PIPING
1230
15183 - 2
A.
3.2
Refrigerant Piping: Type ACR drawn-copper tubing. Main refrigerant piping runs shall be rigid
copper tubing. Soft copper tubing shall be allowed for final connections to branch selector boxes
and terminal units.
PIPING INSTALLATION
A.
Install refrigerant piping according to ASHRAE 15.
B.
Basic piping installation requirements are specified in Division 15 Section "Basic Mechanical
Materials and Methods."
C.
Install piping as short and direct as possible, with a minimum number of joints, elbows, and
fittings.
D.
Arrange piping and service valves to allow inspection and service of compressor and other
equipment. Install valves and specialties in accessible locations to allow for service and
inspection.
E.
Install piping with adequate clearance between pipe and adjacent walls and hangers or between
pipes for insulation installation. Use sleeves through floors, walls, or ceilings, sized to permit
installation of full-thickness insulation.
F.
Hanger, support, and anchor products are specified in Division 15 Section "Hangers and
Supports."
G.
Install the following pipe attachments:
1.
2.
H.
Install hangers for copper tubing with the following maximum spacing and minimum rod sizes:
1.
2.
3.
4.
5.
6.
I.
3.3
Adjustable steel clevis hangers for individual horizontal runs less than 20 feet (6.0 m)
long.
“Uni-strut” style trapeze hangers for multiple horizontal runs 20 feet (6.0 m) or longer,
supported by a trapeze.
NPS 1/2 (and smaller) (DN 15): Maximum span, 60 inches (1500 mm); minimum rod
size, 1/4 inch (6.4 mm).
NPS 5/8 (DN 18): Maximum span, 60 inches (1500 mm); minimum rod size, 1/4 inch (6.4
mm).
NPS 1 (DN 25): Maximum span, 72 inches (1800 mm); minimum rod size, 1/4 inch
(6.4 mm).
NPS 1-1/4 (DN 32): Maximum span, 96 inches (2400 mm); minimum rod size, 3/8 inch
(9.5 mm).
NPS 1-1/2 (DN 40): Maximum span, 96 inches (2400 mm); minimum rod size, 3/8 inch
(9.5 mm).
NPS 2 (DN 50): Maximum span, 96 inches (2400 mm); minimum rod size, 3/8 inch (9.5
mm).
Support vertical runs at each floor.
PIPE JOINT CONSTRUCTION
A.
Braze joints according to Division 15 Section "Basic Mechanical Materials and Methods."
B.
Fill pipe and fittings with an inert gas (nitrogen) during welding to prevent scale formation.
REFRIGERANT PIPING
1230
15183 - 3
3.4
FIELD QUALITY CONTROL
A.
Test and inspect refrigerant piping according to ASME B31.5, Chapter VI.
1.
2.
Test refrigerant piping, specialties, and receivers. Isolate compressor, condenser,
evaporator, and safety devices from test pressure.
Test high- and low-pressure side piping of each system at not less than the lower of the
design pressure or the setting of pressure relief device protecting high and low side of
system.
a.
b.
c.
d.
3.5
System shall maintain test pressure at the manifold gage throughout duration of
test.
Test joints and fittings by brushing a small amount of soap and glycerine solution
over joint.
Fill system with nitrogen to raise a test pressure of 150 psig (1035 kPa) or higher
as required by authorities having jurisdiction.
Remake leaking joints using new materials, and retest until satisfactory results are
achieved.
CLEANING
A.
Before installing copper tubing other than Type ACR, clean tubing and fittings with
trichloroethylene.
END OF SECTION 15183
REFRIGERANT PIPING
1230
15183 - 4
SECTION 15194 - FUEL GAS PIPING
PART 1 - GENERAL
1.1
A.
1.2
A.
1.3
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
SUMMARY
This Section includes fuel gas piping, specialties, and accessories within the building.
DEFINITIONS
A.
Low-Pressure Natural Gas Piping: Operating pressure of 0.5 psig (3.45 kPa) or less.
B.
Medium-Pressure Natural Gas Piping: Operating pressure greater than 0.5 psig (3.45 kPa), but
not greater than 2 psig (13.8 kPa).
1.4
A.
1.5
PROJECT CONDITIONS
Gas System Pressures: Two pressure ranges. Primary pressure is more than 0.5 psig
(3.45 kPa) but not more than 2.0 psig (13.8 kPa), and is reduced to secondary pressure of 0.5
psig (3.45 kPa) or less.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15 Section “Basic Mechanical Requirements.”
B.
Product Data: For the following:
1.
2.
Specialty valves. Include pressure rating, capacity, settings, and electrical connection
data of selected models.
Pressure regulators. Include pressure rating, capacity, and settings of selected models.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS
Subject to compliance with requirements, provide products by one of the following:
1.
Gas Valves, NPS 2 (DN 50) and Smaller:
a.
Crane Valves.
b.
Grinnell Corp.
c.
McDonald: A. Y. McDonald Mfg. Co.
d.
Milwaukee Valve Co., Inc.
e.
Mueller Co.; Mueller Gas Products Div.
f.
Nibco, Inc.
2.
Line Pressure Regulators:
FUEL GAS PIPING
1230
15194 - 1
a.
b.
c.
d.
e.
3.
Appliance Pressure Regulators:
a.
b.
c.
d.
e.
2.2
A.
2.3
A.
Fisher Controls International, Inc.
Maxitrol Co.
National Meter.
Richards Industries, Inc.; Jordan Valve Div.
Schlumberger Industries; Gas Div.
Canadian Meter Co., Inc.
Eaton Corp.; Controls Div.
Harper Wyman Co.
Maxitrol Co.
SCP, Inc.
PIPING MATERIALS
Refer to Part 3 "Piping Applications" Article for applications of pipe, tube, fitting, and joining materials.
PIPES, TUBES, FITTINGS, AND JOINING MATERIALS
Steel Pipe: ASTM A 53; Type E or S; Grade B; Schedule 40; black.
1.
2.
3.
4.
5.
6.
7.
8.
Malleable-Iron Threaded Fittings: ASME B16.3, Class 150, standard pattern, with
threaded ends according to ASME B1.20.1.
Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint,
and threaded ends according to ASME B1.20.1.
Cast-Iron Flanges and Flanged Fittings: ASME B16.1, Class 125.
Steel Welding Fittings: ASME B16.9, wrought steel or ASME B16.11, forged steel.
Steel Threaded Fittings: ASME B16.11, forged steel with threaded ends according to
ASME B1.20.1.
Joint Compound and Tape: Suitable for natural gas.
Steel Flanges and Flanged Fittings: ASME B16.5.
Gasket Material: Thickness, material, and type suitable for natural gas.
B.
Transition Fittings: Type, material, and end connections to match piping being joined.
C.
Common Joining Materials: Refer to Division 15 Section "Basic Mechanical Materials and
Methods" for joining materials not in this Section.
2.4
SPECIALTY VALVES
A.
Valves, NPS 2 (DN 50) and Smaller:
threads.
B.
Valves, NPS 2-1/2 (DN 65) and Larger: Flanged ends according to ASME B16.5 for steel
flanges and according to ASME B16.24 for copper and copper-alloy flanges.
2.5
A.
Threaded ends according to ASME B1.20.1 for pipe
SERVICE METERS
The Gas Service Meter is existing. The gas service provider is AMEREN.
FUEL GAS PIPING
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2.6
A.
PRESSURE REGULATORS
Description: Single stage and suitable for fuel gas service. Include steel jacket and corrosionresistant components, elevation compensator, and atmospheric vent.
1.
2.
B.
NPS 2 (DN 50) and Smaller: Threaded ends according to ASME B1.20.1 for pipe
threads.
NPS 2-1/2 (DN 65) and Larger: Flanged ends according to ASME B16.5 for steel flanges
and according to ASME B16.24 for copper and copper-alloy flanges.
Pressure Regulator Vents: Factory- or field-installed, corrosion-resistant screen in opening if
not connected to vent piping. Pipe so as to not allow accumulation of moisture.
PART 3 - EXECUTION
3.1
PIPING APPLICATIONS
A.
Flanges, unions, transition, and special fittings with pressure ratings same as or higher than
system pressure rating may be used in applications below, unless otherwise indicated.
B.
Fuel Gas Piping, 0.5 psig (3.45 kPa) or Less: Use the following:
1.
2.
3.
C.
Fuel Gas Piping, 0.5 to 2 psig (3.45 to 13.8 kPa): Use the following:
4.
5.
6.
D.
3.2
NPS 3/4 and NPS 1 (DN 20 and DN 25): Steel pipe, malleable-iron threaded fittings, and
threaded joints.
NPS 1-1/4 to NPS 2 (DN 32 to DN 50): Steel pipe, malleable-iron threaded fittings, and
threaded joints.
NPS 2-1/2 to NPS 4 (DN 65 to DN 100): Steel pipe, steel welding fittings, and welded
joints.
1. NPS 3/4 and NPS 1 (DN 20 and DN 25): Steel pipe, malleable-iron threaded fittings,
and threaded joints.
2. NPS 1-1/4 to NPS 2 (DN 32 to DN 50): Steel pipe, malleable-iron threaded fittings,
and threaded joints.
3. NPS 2-1/2 to NPS 4 (DN 65 to DN 100): Steel pipe, steel welding fittings, and welded joints.
Gas Service Piping at Meters and Regulators, Above 5 psig (34.5 kPa): Steel pipe, steel welding fittings, and welded joints.
VALVE APPLICATIONS
A.
Appliance Shutoff Valves for Pressure 0.5 to 2 psig (3.45 to 13.8 kPa): Gas stop or gas valve.
B.
Piping Line Valves, NPS 2-1/2” and Smaller: Gas valve.
C.
Valves at Service Meter, NPS 2 (DN 50) and Smaller: Gas valve.
FUEL GAS PIPING
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3.3
A.
PIPING INSTALLATION
Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic piping installation requirements.
1.
2.
Above-Ceiling Locations: Gas piping may be installed in accessible spaces, subject to
approval of authorities having jurisdiction, whether or not such spaces are used as plenums. Do not locate valves above ceilings.
Prohibited Locations: Do not install gas piping in or through circulating air ducts, clothes
or trash chutes, chimneys or gas vents (flues), ventilating ducts, or dumbwaiter or elevator shafts.
a.
B.
Exception: Accessible above-ceiling space specified above.
Drips and Sediment Traps: Install drips at points where condensate may collect. Include outlets of service meters. Locate where readily accessible for cleaning and emptying. Do not install where condensate would be subject to freezing.
1.
Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped.
Use minimum-length nipple of 3 pipe diameters, but not less than 3 inches (75 mm) long,
and same size as connected pipe. Install with space between bottom of drip and floor for
removal of plug or cap.
C.
Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade or
floors, and in floor channels, unless indicated to be exposed to view.
D.
Install fuel gas piping at uniform grade of 0.1 percent slope upward toward risers.
E.
Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side
down.
F.
Connect branch piping from top or side of horizontal piping.
G.
Install unions in pipes NPS 2 (DN 50) and smaller, adjacent to each valve, at final connection to
each piece of equipment, and elsewhere as indicated. Unions are not required on flanged devices.
H.
Install strainer on inlet of each line pressure regulator.
I.
Install vent piping for gas pressure regulators and gas trains, extend outside building, and vent
to atmosphere. Terminate vents with turned-down, reducing-elbow fittings with corrosionresistant insect screens in large end. Vent terminations shall be no closer than 10-foot from
equipment.
3.4
A.
HANGER AND SUPPORT INSTALLATION
Install hangers for horizontal steel piping with the following maximum spacing and minimum rod
sizes:
1.
2.
3.
NPS 1 (DN 25) and Smaller: Maximum span, 96 inches (2438 mm); minimum rod size,
3/8 inch (10 mm).
NPS 1-1/4 (DN 32): Maximum span, 108 inches (2743 mm); minimum rod size, 3/8 inch
(10 mm).
NPS 1-1/2 and NPS 2 (DN 40 and DN 50): Maximum span, 108 inches (2743 mm); minimum rod size, 3/8 inch (10 mm).
FUEL GAS PIPING
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4.
3.5
NPS 2-1/2 to NPS 3-1/2 (DN 65 to DN 90): Maximum span, 10 feet (3 m); minimum rod
size, 1/2 inch (13 mm).
CONNECTIONS
A.
Drawings indicate general arrangement of fuel gas piping, fittings, and specialties.
B.
Install piping adjacent to appliances to allow service and maintenance.
C.
Connect piping to appliances using gas with shutoff valves and unions. Install valve upstream
from and within 72 inches (1800 mm) of each appliance. Install union downstream from valve.
D.
Sediment Traps: Install tee fitting with capped nipple in bottom to form drip, as close as practical to inlet of each appliance using gas.
3.6
FIELD QUALITY CONTROL
A.
Inspect, test, and purge piping according to ANSI Z223.1, Part 4 "Inspection, Testing, and Purging," and requirements of authorities having jurisdiction.
B.
Repair leaks and defects with new materials and retest system until satisfactory results are obtained.
C.
Report test results promptly and in writing to Engineer and authorities having jurisdiction.
D.
Verify capacities and pressure ratings of service meters, pressure regulators, valves, and specialties.
E.
Verify correct pressure settings for pressure regulators.
F.
Verify that specified piping tests are complete.
3.7
A.
ADJUSTING
Adjust controls and safety devices. Replace damaged and malfunctioning controls and safety
devices.
END OF SECTION 15194
FUEL GAS PIPING
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SECTION 15410 - PLUMBING FIXTURES
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section:
1.
2.
3.
4.
5.
6.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Valves” for general-duty valves used as supply stops.
“Plumbing Specialties” for backflow preventers and other specialties not specified in this
Section.
“Domestic Water Piping” for water distribution within building.
“Sanitary Waste and Vent Piping” for waste and vent piping within building.
SUMMARY
A.
1.3
This Section includes plumbing fixtures and trim, faucets, other fittings, and related components.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15 Section “Basic Mechanical Requirements.”
B.
Product Data: Include selected fixture, trim, fittings, accessories, appliances, appurtenances,
equipment, and supports and indicate materials and finishes, dimensions, construction details,
and flow-control rates for each type of fixture indicated.
C.
Shop Drawings: Diagram power, signal, and control wiring and differentiate between manufacturer-installed and field-installed wiring.
D.
Maintenance Data: For plumbing fixtures and components to include in the Operation and
Maintenance Manuals specified in Division 15 Section “Basic Mechanical Requirements.”
1.4
QUALITY ASSURANCE
A.
Comply with locally adopted edition of “International Plumbing Code” for plumbing materials,
components, and installation.
B.
Regulatory Requirements: Comply with requirements of Public Law 90-480, "Architectural Barriers Act"; and Public Law 101-336, "Americans with Disabilities Act"; about plumbing fixtures for
people with disabilities.
PLUMBING FIXTURES
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C.
Source Limitations: Obtain plumbing fixtures, faucets, and other components of each category
through one source from a single manufacturer.
1.
Exception: If fixtures, faucets, or other components are not available from a single manufacturer, obtain similar products from other manufacturers specified for that category.
D.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.
E.
ANSI Standards: Comply with applicable ANSI standards pertaining to plumbing fixtures.
F.
NSF Standard: Comply with NSF 61, "Drinking Water System Components--Health Effects," for
fixture materials that will be in contact with potable water.
G.
Select combinations of fixtures and trim, faucets, fittings, and other components that are compatible.
1.5
PROJECT CONDITIONS
A.
Coordinate roughing-in and final fixture locations and verify that fixtures can be installed to
comply with original design and referenced standards.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Subject to compliance with requirements, provide products in each category, by one of the following listed for that category:
1.
Water Closet:
a.
b.
c.
d.
e.
2.
Urinals:
a.
b.
c.
d.
e.
3.
American Standard, Inc.
Crane Plumbing/Fiat Products.
Kohler Co.
Universal-Rundle Corp.
U.S. Industries, Eljer Plumbingware Div.
American Standard, Inc.
Crane Plumbing.
Kohler Co.
Universal-Rundle Corp.
U.S. Industries, Eljer Plumbingware Div.
Lavatories:
a.
b.
c.
d.
American Standard, Inc.
Crane Plumbing/Fiat Products.
Kohler Co.
Universal-Rundle Corp.
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e.
4.
Sinks:
a.
b.
c.
d.
e.
f.
g.
h.
5.
Delaney Co.
Sloan Valve Co.
Zurn Industries, Inc.; Flush Valve Operations.
Sensor-Operated Faucets and Devices:
a.
b.
c.
d.
e.
f.
g.
9.
American Standard, Inc.
Bemis Mfg. Co.
Beneke Div.; Sanderson Plumbing Products, Inc.
Church Seat Co.
Kohler Co.
Olsonite Corp.
Sperzel.
U.S. Industries, Eljer Plumbingware Div.
Flush Valves:
a.
b.
c.
8.
American Standard, Inc.
Crane Plumbing.
Elkay
Haws Drinking Faucet Co.
Kohler Co.
Sunroc Corp.
Toilet Seats:
a.
b.
c.
d.
e.
f.
g.
h.
7.
American Standard, Inc.
Crane Plumbing/Fiat Products.
Elkay Manufacturing Co.
Just Manufacturing Co.
Kohler Co.
Moen Group; Stanadyne Corp.
Universal-Rundle Corp.
U.S. Industries, Eljer Plumbingware Div.
Drinking Fountains:
a.
b.
c.
d.
e.
f.
6.
U.S. Industries, Eljer Plumbingware Div.
Acorn Engineering Co.
Bradley Corp.
Cambridge Brass; Div. of Masco Corp.
Coyne & Delaney Co.
Sloan Valve Co.
Speakman Co.
Zurn Industries, Inc.
Miscellaneous Fittings (Except Faucets):
a.
b.
c.
d.
Chicago Faucet Co.
Crane Plumbing/Fiat Products.
Kohler Co.
Royal Brass Mfg. Co.
PLUMBING FIXTURES
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e.
10.
Supports:
a.
b.
c.
d.
e.
11.
Josam Co.
Smith (Jay R.) Mfg. Co.
Wade Div.; Tyler Pipe.
Watts Drainage Products.
Zurn Industries, Inc.; Hydromechanics Div.
Handicap Trap and Valve Insulation Kits:
a.
b.
c.
2.2
U.S. Industries, Eljer Plumbingware Div.
Brocar Products, Inc.
McGuire Mfgr. Co. Inc. - Prowrap
Truebro, Inc.
PLUMBING FIXTURE STANDARDS
A.
Comply with applicable standards below and other requirements specified.
1.
2.
3.
4.
5.
6.
2.3
Electric Water Coolers: ARI 1010 and UL 399.
Hand Sinks: NSF 2 construction.
Stainless-Steel Fixtures Other Than Service Sinks: ASME A112.19.3M.
Vitreous-China Fixtures: ASME A112.19.2M.
Water-Closet, Flush Valve, Tank Trim: ASME A112.19.5.
Water-Closet, Flushometer Tank Trim: ASSE 1037.
PLUMBING FIXTURES, GENERAL
A.
2.4
Provide plumbing fixtures and trim, fittings, faucets, other components, and supports as specified in the “Plumbing Fixture Schedule” and other parts of this section. “PFS” is located at end
of this section or on the plans.
FITTINGS
A.
Fittings General: Unless otherwise specified, provide fittings fabricated of brass, with a polished
chrome plated finish. Chrome stops with plastic turn knobs will not be accepted.
B.
Lavatory Supplies and Stops; Loose-key angle stop, having 1/2-inch NPS inlet with wall flange
and 3/8-inch by 12-inch flexible tubing riser outlet.
C.
Traps: Cast-brass, 1-1/2-inch NPS adjustable P-trap with cleanout, 17-gage tubular waste to
wall, and wall flange.
D.
Escutcheons: Wall flange with set screw.
2.5
FLUSH VALVES
A.
Provide flush valves compatible with fixtures, with features and of consumption indicated.
B.
Construction: Cast-brass body, brass or copper pipe or tubing inlet with wall flange and tail-
PLUMBING FIXTURES
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piece with spud, screwdriver check stop, vacuum breaker, and brass lever handle actuation except where other variations are specified. Type shall be diaphragm operation except where
other type is specified.
C.
Finish: Exposed metal parts shall be polished chrome-plated, except components installed in a
concealed location may be rough brass or unfinished.
D.
Water Closet Flush Valves: Furnish with following features.
1.
2.
Non-hold-open feature.
Furnish flush valves with factory-set or field-adjusted maximum water consumption per
cycle.
a.
3.
E.
Battery-powered, sensor-actuation, automatic flushing system.
Urinal Flush Valves: Furnish with following features.
1.
2.
Non-hold-open feature.
Furnish flush valves with factory-set maximum water consumption per cycle.
a.
3.
2.6
Consumption: 1.6 gallons per flushing cycle.
Consumption: 1.0 gallons per flushing cycle.
Battery-powered, sensor-actuation, automatic flushing system.
TOILET SEAT
A.
General: Provide toilet seats compatible with water closets, and of type, color, and features indicated.
B.
Description: Heavy-duty, commercial/industrial type, elongated, open front, solid plastic, with
check hinge.
2.7
PLUMBING FIXTURE SUPPORTS
A.
Supports: Categories and types as required for wall-hanging fixtures specified, and wall reinforcement.
B.
Support categories are:
1.
Carriers: Supports for wall-hanging water closets and fixtures supported from wall construction. Water closet carriers shall have an additional faceplate and coupling when
used for wide pipe spaces. Provide tiling frame or setting gage with carriers for
wall-hanging water closets.
2.
Chair Carriers: Floor mount supported with rectangular steel uprights, block bases, leveling and securing screws, and concealed arms for wall-hanging fixtures.
3.
Chair Carriers: Floor mount supported with rectangular steel uprights, block bases, hanger and bearing plates, and adjustable supporting rods for wall-hanging fixtures.
4.
Urinal Chair Carriers: Floor mount supported with rectangular steel uprights, block ba-
PLUMBING FIXTURES
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ses, support plate, adjustable fixture bolts and chrome plated trim.
5.
2.8
Wall mounted plate type carriers will not be acceptable.
HANDICAP TRAP AND VALVE INSULATION KITS
A.
Handicap trap and valve insulation kit: Provide insulation kit at lavatories, sinks and other fixtures designated as handicap accessible fixtures.
1.
Material: Molded closed cell vinyl.
2.
Thickness: Minimum wall thickness of 1/8".
3.
Conductivity: K=1.02 Btu-in/hr-ft2- F (minimum).
4.
Burning Characteristics: Self extinguished 5 sec. (ATB) 10mm (AEB).
5.
Fasteners: Nylon ties.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
Examine roughing-in for potable, hot- and cold-water supply piping systems; soil, waste, and
vent piping systems; and supports. Verify that locations and sizes of piping and locations and
types of supports match those indicated, before installing and connecting fixtures. Use manufacturer's roughing-in data when roughing-in data are not indicated.
B.
Examine walls, floors, and cabinets for suitable conditions where fixtures are to be installed.
C.
Do not proceed until unsatisfactory conditions have been corrected.
3.2
APPLICATIONS
A.
Install plumbing fixtures and specified components, in accordance with designations and locations indicated on Drawings.
B.
Install supports for plumbing fixtures in accordance with categories indicated and of type required:
1.
2.
Carriers for following fixtures:
a.
Wall-hanging water closets.
b.
Fixtures supported from wall construction.
Chair carriers for the following fixtures:
a.
Wall-hanging urinals.
b.
Wall-hanging lavatories and sinks.
PLUMBING FIXTURES
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c.
C.
3.
Provide reinforcement where required for floor-mounted fixtures which require securing to
wall.
4.
Fabricate reinforcement from 2-by-4-inch or 2-by-6-inch fire-retardant-treated-wood
blocking between studs or 1/4-by-6-inch steel plates attached to studs, in wall construction, to secure fixtures to wall. Include length that will extend beyond ends of fixture
mounting bracket and attach to at least 2 studs.
Include fitting insulation kits for accessible fixtures according to the following:
1.
2.
3.
4.
3.3
Wall-hanging drinking fountains and electric water coolers.
Lavatories: Cover hot- and cold-water supplies, stops and handles, drain, trap, and
waste to wall.
Sinks: Cover hot- and cold-water supplies, stops and handles, drain, trap, and waste to
wall.
Fixtures with Offset Drain: Cover hot- and cold-water supplies, offset drain, trap, and
waste to wall.
Other Fixtures: Cover exposed fittings below fixture.
PLUMBING FIXTURE INSTALLATION
A.
Assemble plumbing fixtures and trim, fittings, faucets, and other components according to manufacturers' written instructions.
B.
Install fixtures level and plumb according to manufacturers' written instructions, roughing-in
drawings, and referenced standards.
C.
Install wall-hanging, back-outlet water closets onto waste fitting seals and attach to supports.
D.
Install toilet seats on water closets.
E.
Install flushometer valves for accessible water closets and urinals with handle mounted on wide
side of compartment at 44” A.F.F. maximum. Install other actuators in locations that are easy
for handicapped people to reach.
F.
Install counter-mounting fixtures in and attached to casework.
G.
Install wall-hanging fixtures with tubular waste piping attached to supports.
H.
Install water supply piping with individual stop valve in accessible location to each fixture. Attach supplies to supports or substrate within pipe spaces behind fixtures.
I.
Install faucets in accordance with accepted standard practice (right hand cold, left hand hot,
both levers operate towards the user, etc.).
J.
Provide access doors as required for concealed items such as shock arrestors, transformers,
solenoid valves, or any other items that require access or maintenance.
K.
Install traps on fixture outlets.
1.
2.
Exception: Omit traps on fixtures having integral traps.
Exception: Omit traps on indirect wastes, except where otherwise indicated.
PLUMBING FIXTURES
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L.
Install escutcheons at wall, floor, and ceiling penetrations in exposed, finished locations and
within cabinets and millwork. Use deep-pattern escutcheons where required to conceal protruding pipe fittings. Refer to Division 15 Section “Basic Mechanical Materials and Methods” for escutcheons.
M.
Seal joints between fixtures and walls, floors, and counters using sanitary-type, 1-part, mildewresistant, silicone sealant. Match sealant color to fixture color.
3.4
CONNECTIONS
A.
Piping installation requirements are specified in other Division 15 Sections. Drawings indicate
general arrangement of piping, fittings, and specialties.
B.
Connect water supplies from water distribution piping to fixtures.
C.
Connect drain piping from fixtures to drainage piping.
D.
Supply and Waste Connections to Plumbing Fixtures: Connect fixtures with water supplies,
stops, risers, traps, and waste piping. Use size fittings required to match fixtures. Connect to
plumbing piping.
E.
Supply and Waste Connections to Equipment Specified in Other Sections: Connect equipment
with supply inlets, supply stops, supply risers, and traps specified in this Section. Use fitting
sizes required to match connected equipment. Connect fittings to plumbing piping.
F.
Electrical: Refer to Section 15010 “Basic Mechanical Requirements” for electrical connections
to mechanical equipment.
3.5
FIELD QUALITY CONTROL
A.
Verify that installed fixtures are categories and types specified for locations where installed.
B.
Check that fixtures are complete with trim, faucets, fittings, and other specified components.
C.
Inspect installed fixtures for damage. Replace damaged fixtures and components.
D.
Test installed fixtures after water systems are pressurized and demonstrate proper operation.
Replace malfunctioning fixtures and components, then retest. Repeat procedure until units operate properly.
E.
Install fresh batteries in sensor-operated mechanisms.
3.6
ADJUSTING AND CLEANING
A.
Operate and adjust faucets and controls. Replace damaged and malfunctioning fixtures, fittings, and controls.
B.
Operate and adjust sensor operated faucets and valves, and controls. Replace damaged and
malfunctioning units and controls.
C.
Adjust water pressure at drinking fountains, electric water coolers, faucets, shower valves, and
flush valves having controls, to produce proper flow and stream.
PLUMBING FIXTURES
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D.
3.7
Replace washers and seals of leaking and dripping faucets and stops.
CLEANING
A.
Clean fixtures, faucets, and other fittings with manufacturers' recommended cleaning methods
and materials. Include the following:
1.
2.
3.8
Remove faucet spouts and strainers, remove sediment and debris, and reinstall strainers
and spouts.
Remove sediment and debris from drains.
PROTECTION
A.
Provide protective covering for installed fixtures and fittings.
B.
Do not allow use of fixtures for temporary facilities, except when approved in writing by Owner.
END OF SECTION 15410
PLUMBING FIXTURES
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SECTION 15430 - PLUMBING SPECIALTIES
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section:
1.
2.
3.
4.
5.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods” for piping joining materials, joint construction,
basic installation requirements, and labeling and identifying requirements; and
escutcheons, dielectric fittings, sleeves, and sleeve seals that are not in this Section.
“Valves” for general-duty ball, butterfly, check, gate, and globe valves.
“Water Distribution Piping” for water-supply piping and connections.
“Drainage and Vent Piping” for drainage and vent piping and connections.
SUMMARY
A.
This Section includes plumbing specialties for the following:
1.
2.
1.3
Water distribution systems.
Soil, waste, and vent systems.
SYSTEM PERFORMANCE REQUIREMENTS
A.
Provide components and installation capable of producing piping systems with following
minimum working-pressure ratings, unless otherwise indicated:
1.
2.
1.4
Water Distribution Piping: 125 psig (860 kPa).
Soil, Waste, and Vent Piping: 10-foot head of water (30 kPa).
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product Data: For each plumbing specialty indicated. Include rated capacities of selected
equipment and shipping, installed, and operating weights. Indicate materials, finishes,
dimensions, required clearances, and methods of assembly of components; and piping and
wiring connections for the following plumbing specialty products:
1.
2.
3.
4.
5.
6.
Balancing valves.
Drain valves.
Hose bibbs and hydrants.
Water hammer arresters.
Cleanouts.
Floor drains, open receptors, and trench drains.
PLUMBING SPECIALTIES
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7.
8.
C.
Maintenance Data: For specialties to include in the Maintenance Manuals specified in
Division 15 Section “Basic Mechanical Requirements.” Include the following:
1.
2.
3.
4.
5.
1.5
Air-admittance valves.
Vent caps, vent terminals, and roof flashing assemblies.
Backflow preventers.
Water regulators.
Water filters.
Trap seal primer valves and systems.
Hose stations.
QUALITY ASSURANCE
A.
Product Options:
Drawings indicate size, profiles, dimensional requirements, and
characteristics of plumbing specialties and are based on the specific types and models
indicated. Other manufacturers' products with equal performance characteristics may be
considered. Refer to Division 15 Section "Basic Mechanical Requirements" for substitutions.
B.
Provide listing/approval stamp, label, or other marking on plumbing specialties made to
specified standards.
C.
Comply with ASME B31.9, "Building Services Piping," for materials, products, and installation.
D.
Comply with NFPA 70, "National Electrical Code," for electrical components.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Subject to compliance with requirements, provide products by one of the following:
1.
Memory-Stop Balancing Valves:
a.
b.
c.
d.
e.
2.
Hydrants:
a.
b.
c.
d.
e.
f.
g.
3.
Crane Co.; Valve Div.
Grinnell Corp.
Hammond Valve Corp.
Milwaukee Valve Co., Inc.
Nibco, Inc.
Josam Co.
Smith: Jay R. Smith Mfg. Co.
Tyler Pipe; Wade Div.
Watts Drainage Products.
Watts Industries, Inc.; Water Products Div.
Woodford Manufacturing Co.
Zurn Industries, Inc.; Hydromechanics Div.
Water Hammer Arresters:
a.
b.
Amtrol, Inc.
Josam Co.
PLUMBING SPECIALTIES
1230
15430 - 2
c.
d.
e.
f.
g.
h.
i.
4.
Roof Flashing Assemblies:
a.
5.
Elmdor/Stoneman Manufacturing Co.
Cleanouts, Floor Drains, Floor Sinks, Trench Drains and Roof Drains:
a.
b.
c.
d.
2.2
Precision Plumbing Products, Inc.
Sioux Chief Manufacturing Co., Inc.
Smith: Jay R. Smith Mfg. Co.
Tyler Pipe; Wade Div.
Watts Drainage Products.
Watts Industries, Inc.; Water Products Div.
Zurn Industries, Inc.; Hydromechanics Div.
Josam Co.
Smith: Jay R. Smith Mfg. Co.
Watts Drainage Products.
Zurn Industries, Inc.: Hydromechanics Div.
BALANCING VALVES
A.
2.3
Memory-Stop Balancing Valves, 2-Inch NPS (DN50) and Smaller: MSS SP-110, ball valve,
rated for 400-psig (2760-kPa) minimum CWP. Include 2-piece, ASTM B 62 bronze body with
standard port, chrome-plated brass ball, replaceable seats and seals, blowout-proof stem,
solder-joint ends, and vinyl-covered steel handle with memory-stop device.
HYDRANTS
A.
Wall Hydrants: ASME A112.21.3M or ASSE 1019, nonfreeze, automatic draining, antibackflow
type, key operation, with 3/4- or 1-inch NPS (DN20 or DN25) threaded or solder-joint inlet, and
ASME B1.20.7 garden-hose threads on outlet. Include operating key for each hydrant.
1.
2.
3.
2.4
Type: Projecting.
Type: Recessed.
Finish: Polished bronze.
MISCELLANEOUS PIPING SPECIALTIES
A.
Water Hammer Arresters: ASME A112.26.1M, ASSE 1010, or PDI-WH 201, metal-bellows type
or piston type with pressurized cushioning chamber. Sizes are based on water-supply fixture
units, ASME A112.26.1M sizes A through F and PDI-WH 201 sizes A through F.
B.
Roof Flashing Assemblies: Manufactured assembly made of 4-lb/sq. ft. (20-kg/sq. m), 0.0625inch- (1.6-mm-) thick, lead flashing collar and skirt extending at least 8 inches (200 mm) from
pipe with galvanized steel boot reinforcement, and counterflashing fitting.
1.
C.
Vent Cap: Open top, without cap.
Deep-Seal Traps: Cast iron or bronze, with inlet and outlet matching connected piping,
cleanout where indicated, and trap seal primer valve connection where indicated.
1.
2.
2-Inch NPS (DN50): 4-inch- (100-mm-) minimum water seal.
2-1/2 Inch NPS (DN65) and Larger: 5-inch- (125-mm-) minimum water seal.
PLUMBING SPECIALTIES
1230
15430 - 3
D.
2.5
Vent Terminals: Commercially manufactured, shop-fabricated or field-fabricated, frost-proof
assembly constructed of galvanized steel, copper, or lead-coated copper. Size to provide 1inch (25-mm) enclosed air space between outside of pipe and inside of flashing collar
extension, with counterflashing, as indicated.
FLASHING MATERIALS
A.
Lead Sheet: ASTM B 749, Type L51121, copper bearing, with the following minimum weights
and thicknesses, unless otherwise indicated:
1.
2.
3.
B.
General Use: 4 lb/sq. ft. or 0.0625-inch thickness (20 kg/sq. m or 1.6-mm thickness).
Vent Pipe Flashing: 3 lb/sq. ft. or 0.0469-inch thickness (15 kg/sq. m or 1.2-mm
thickness).
Burning: 6 lb/sq. ft. or 0.0937-inch thickness (30 kg/sq. m or 2.4-mm thickness).
Elastic Membrane Sheet:
minimum thickness.
ASTM D 4068, flexible, chlorinated polyethylene, 40-mil (1-mm)
PART 3 - EXECUTION
3.1
PLUMBING SPECIALTY INSTALLATION
A.
Refer to Division 15 Section “Basic Mechanical Materials and Methods” for piping joining
materials, joint construction, and basic installation requirements.
B.
General: Install plumbing specialty components, connections, and devices according to
manufacturer's written instructions.
C.
Install wall hydrants with integral or field-installed vacuum breaker.
D.
Install cleanouts in aboveground piping and building drain piping as indicated, and where not
indicated, according to the following:
1.
2.
3.
4.
Size same as drainage piping up to 4-inch NPS (DN100). Use 4-inch NPS (DN100) for
larger drainage piping unless larger cleanout is indicated.
Locate at each change in direction of piping greater than 45 degrees.
Locate at minimum intervals of 50 feet (15 m) for piping 4-inch NPS (DN100) and smaller
and 100 feet (30 m) for larger piping.
Locate at base of each vertical soil and waste stack.
E.
Install cleanout wall access covers, of types indicated, with frame and cover flush with finished
wall, for cleanouts located in concealed piping.
F.
Install vent flashing sleeves on stacks passing through roof.
according to manufacturer's written instructions.
G.
Install floor drains at low points of surface areas to be drained. Set grates of drains flush with
finished floor or as indicated. Size outlets as indicated.
H.
Fasten wall-hanging plumbing specialties securely to supports attached to building substrate if
supports are specified and to building wall construction if no support is indicated.
PLUMBING SPECIALTIES
1230
Secure over stack flashing
15430 - 4
I.
Fasten recessed, wall-mounting plumbing specialties to reinforcement built into walls.
J.
Secure supplies to supports or substrate.
K.
Install individual stop valve in each water supply to plumbing specialties. Use ball, valve if
specific valve is not indicated. Install water-supply stop valves in accessible locations.
L.
Install traps on plumbing specialty drain outlets. Omit traps on indirect wastes unless trap is
indicated.
M.
Locate drainage piping as close as possible to bottom of floor slab supporting fixtures and
drains.
N.
Install escutcheons at wall, floor, and ceiling penetrations in exposed finished locations and
within cabinets and millwork. Use deep-pattern escutcheons if required to conceal protruding
pipe fittings.
O.
Include wood-blocking reinforcement for recessed and wall-mounting plumbing specialties.
3.2
CONNECTIONS
A.
Piping installation requirements are specified in other Division 15 Sections. Drawings indicate
general arrangement of piping, fittings, and specialties. The following are specific connection
requirements:
1.
Install piping connections between plumbing specialties and piping specified in other
Division 15 Sections.
B.
Electrical: Refer to Section 15010 “Basic Mechanical Requirements” for electrical connections
to mechanical equipment.
C.
Supply Runouts to Plumbing Specialties: Install hot- and cold-water-supply piping of sizes
indicated, but not smaller than required by authorities having jurisdiction.
D.
Drainage Runouts to Plumbing Specialties: Install drainage and vent piping, with approved
trap, of sizes indicated, but not smaller than required by authorities having jurisdiction.
3.3
FLASHING INSTALLATION
A.
Install flashing for piping passing through roofs with counterflashing or commercially made
flashing fittings.
B.
Extend flashing up vent pipe passing through roofs and turn down into pipe, or secure flashing
into cast-iron sleeve having calking recess.
C.
Fabricate and install flashing and pans, sumps, and other drainage shapes as indicated. Install
drain connection if indicated.
3.4
SYSTEM START-UP
A.
Before startup, perform the following checks:
1.
2.
System tests are complete.
Damaged and defective specialties and accessories have been replaced or repaired.
PLUMBING SPECIALTIES
1230
15430 - 5
3.
B.
Before operating systems, perform the following steps:
1.
2.
3.
4.
C.
3.5
Clear space is provided for servicing specialties.
Close drain valves, hydrants, and hose bibbs.
Open general-duty valves to fully open position.
Remove and clean strainers.
Verify that drainage and vent piping are clear of obstructions. Flush with water until
clear.
Adjust operation and correct deficiencies discovered during commissioning.
DEMONSTRATION
A.
Startup Services: Engage a factory-authorized service representative to perform startup
services and train Owner's maintenance personnel as specified below:
1.
2.
3.6
Train Owner's maintenance personnel on procedures and schedules related to startup of
and servicing all equipment outlined in this section.
Schedule training with Owner with at least 7 days' advance notice.
CLEANOUT SCHEDULE
A.
Floor Cleanout: Where plumbing specialties of this designation are indicated, provide products
complying with the following:
1.
2.
Applicable Standard: ASME A112.36.2M Cleanouts.
Provide the following or equal:
a.
3.
4.
5.
6.
7.
B.
Body Material: Nikaloy.
Outlet Connection: As required to coordinate with piping.
Frame and Cover Material and Finish: Satin finish scoriated bronze.
Frame and Cover Shape: Round for most applications. Use square with tile flooring.
Provide carpet cleanout marker where cleanouts are to be under carpet.
Top Loading Classification: Medium Duty.
Wall Cleanout: Where plumbing specialties of this designation are indicated, provide products
complying with the following:
1.
2.
Applicable Standard: ASME A112.36.2M Cleanouts.
Provide the following or equal:
a.
3.
4.
C.
Series 56670 by Josam Co.
Series 58900 by Josam Co.
Cleanout Plug: Bronze tapped plug.
Cover: Round stainless steel wall access cover with center screw.
Exterior or Unfinished Area Cleanout: Where plumbing specialties of this designation are
indicated, provide products complying with the following:
1.
2.
Applicable Standard: ASME A112.36.2M Cleanouts.
Provide the following or equal:
PLUMBING SPECIALTIES
1230
15430 - 6
a.
3.
4.
5.
6.
7.
3.7
Series 56670 by Josam Co.
Body Material: Nikaloy.
Outlet Connection: As required to coordinate with piping.
Frame and Cover Material and Finish: Scoriated loose-set cast iron tractor cover.
Frame and Cover Shape: Round.
Top Loading Classification: Medium Duty.
FLOOR-DRAIN SCHEDULE
A.
Floor Drain FD-1: Where plumbing specialties of this designation are indicated, provide
products complying with the following:
1.
2.
Applicable Standard: ASME A112.21.1M Floor Drain Standard.
Provide the following or equal:
a.
b.
3.
4.
5.
6.
7.
8.
9.
10.
Series 30000-A (round) by Josam Co.
Series 30000-S (square) by Josam Co.
Body Material: Cast iron two-piece body.
Seepage Flange: Required with weepholes.
Clamping Device: Required.
Outlet: Bottom.
Top of Body and Strainer Material/Finish: Satin finish bronze.
Top Shape: Round for most applications. Square for tile flooring.
Dimensions of Top or Strainer: 5” for 2” outlets, 6” for 3” & 4” outlets.
Top Loading Classification: Light Duty (rated up to 2000 lbs).
END OF SECTION 15430
PLUMBING SPECIALTIES
1230
15430 - 7
SECTION 15780 – PACKAGED ROOFTOP MAKE-UP AIR UNITS
PART 1 - GENERAL
1.01
A.
1.02
A.
B.
C.
1.03
A.
B.
1.04
A.
1.05
A.
B.
C.
1.06
A.
B.
C.
SECTION INCLUDES
Packaged Rooftop make-up air conditioners.
REFERENCES
National Electrical Code.
NFPA 70—National Fire Protection Agency.
SMACNA—HVAC Duct Construction Standards—Metal and Flexible.
SUBMITTALS
Shop Drawings: Indicate assembly, unit dimensions, weight loading, required clearances,
construction details, field connection details, electrical characteristics and connection
requirements.
Product Data:
1. Provide literature that indicates dimensions, weights, capacities, ratings, fan
performance, and electrical characteristics and connection requirements.
2. Provide computer generated fan curves with specified operating point clearly plotted.
3. Manufacturer’s Installation Instructions.
OPERATION AND MAINTANENCE DATA
Maintenance Data: Provide instructions for installation, maintenance and service
QUALIFICATIONS
Manufacturer: Company specializing in manufacturing the Products specified in this section with
minimum five years documented experience, who issues complete catalog data on total product.
Startup must be done by trained personnel experienced with rooftop equipment.
Do not operate units for any purpose, temporary or permanent, until ductwork is clean, filters and
remote controls are in place, bearings lubricated, and manufacturers’ installation instructions
have been followed.
DELIVERY, STORAGE, AND HANDLING
Deliver, store, protect and handle products to site.
Accept products on site and inspect for damage.
Store in clean dry place and protect from weather and construction traffic. Handle carefully to
avoid damage to components, enclosures, and finish.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 1
PART 2: PRODUCTS
2.01
A.
2.02
A.
B.
C.
D.
E.
F.
G.
H.
2.03
A.
B.
MANUFACTURERS
Basis of Design: McQuay International
1. Deducts for alternative equipment will be considered.
GENERAL DESCRIPTION
Furnish as shown on plans, Daikin McQuay Rebel Single zone Heating and Cooling Unit(s) model
DPS. Unit performance and electrical characteristics shall be per the job schedule.
Configuration: Fabricate as detailed on prints and drawings:
1. Return plenum / economizer section
2. Filter section
3. Cooling coil section
4. Supply fan section
5. Gas heating section.
6. Condensing unit section
The complete unit shall be cETLus listed.
Each unit shall be specifically designed for outdoor rooftop application and include a
weatherproof cabinet. Each unit shall be completely factory assembled and shipped in one piece.
Packaged units shall be shipped fully charged with R-410 Refrigerant and oil.
The unit shall undergo a complete factory run test prior to shipment. The factory test shall include
a refrigeration circuit run test, a unit control system operations checkout, a unit refrigerant leak
test and a final unit inspection.
All units shall have decals and tags to indicate caution areas and aid unit service. Unit
nameplates shall be fixed to the main control panel door. Electrical wiring diagrams shall be
attached to the control panels. Installation, operating and maintenance bulletins and start-up
forms shall be supplied with each unit.
Performance: All scheduled EER, IEER, capacities and face areas are minimum accepted values.
All scheduled amps, kW, and HP are maximum accepted values that allow scheduled capacity to
be met.
Warranty: The manufacturer shall provide 12-month parts only warranty. Defective parts shall be
repaired or replaced during the warranty period at no charge. The warranty period shall
commence at startup or six months after shipment, whichever occurs first.
CABINET, CASING, AND FRAME
Panel construction shall be double-wall construction for all panels. All floor panels shall have a
solid galvanized steel inner liner on the air stream side of the unit to protect insulation during
service and maintenance. Insulation shall be a minimum of 1" thick with an R-value of 7.0, and
shall be 2 part injected foam. Panel design shall include no exposed insulation edges. Unit
cabinet shall be designed to operate at total static pressures up to 5.0 inches w.g.
Exterior surfaces shall be constructed of pre-painted galvanized steel for aesthetics and long term
durability. Paint finish to include a base primer with a high quality, polyester resin topcoat of a
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 2
C.
D.
2.04
A.
2.05
A.
B.
C.
D.
Service doors shall be provided on the fan section, filter section, control panel section, and
heating vestibule in order to provide user access to unit components. All service access doors
shall be mounted on multiple, stainless steel hinges and shall be secured by a latch system.
Removable service panels secured by multiple mechanical fasteners are not acceptable.
The unit base shall overhang the roof curb for positive water runoff and shall seat on the roof curb
gasket to provide a positive, weathertight seal. Lifting brackets shall be provided on the unit base
to accept cable or chain hooks for rigging the equipment.
ECONOMIZER SECTION
Unit shall be provided with an outdoor air economizer section. The economizer section shall
include outdoor, return, and exhaust air dampers. The economizer operation shall be fully integral
to the mechanical cooling and allow up to 100% of mechanical cooling if needed to maintain the
cooling discharge air temperature. The outdoor air hood shall be factory installed and
constructed from galvanized steel finished with the same durable paint finish as the main unit.
The hood shall include moisture eliminator filters to drain water away from the entering air stream.
The outside and return air dampers shall be sized to handle 100% of the supply air volume. The
dampers shall be parallel blade design. Damper blades shall be gasketed with side seals to
provide an air leakage rate of 4 cfm / square foot of damper area at 1” differential pressure per
ASHRAE 90.1 Energy Standard . A barometric exhaust damper shall be provided to exhaust air
out of the back of the unit. A bird screen shall be provided to prevent infiltration of rain and
foreign materials. Exhaust damper blades shall be lined with vinyl gasketing on contact edges.
Control of the dampers shall be by a factory installed direct coupled actuator. Damper actuator
shall be of the modulating, spring return type. A comparative enthalpy control shall be provided to
sense and compare enthalpy in both the outdoor and return air streams to determine if outdoor air
is suitable for “free” cooling. If outdoor air is suitable for “free” cooling, the outdoor air dampers
shall modulate in response to the unit’s temperature control system.
ENERGY RECOVERY
The rooftop unit shall be provided with an AHRI certified rotary wheel air-to-air heat exchanger in
a cassette frame complete with seals, drive motor and drive belt. The energy recovery wheel
shall be an integral part of the rooftop unit with unitary construction and does not require field
assembly. Bolt-on energy recovery units that require field assembly and section to section
gasketing and sealing are not acceptable.
The wheel capacity, air pressure drop and effectiveness shall be AHRI certified per AHRI
Standard 1060. Thermal performance shall be certified by the manufacturer in accordance with
ASHRAE Standard 84, Method of Testing Air-to-Air Heat Exchangers and AHRI Standard 1060,
Rating Air-to-Air Heat Exchangers For Energy Recovery Ventilation Equipment.
The rooftop unit shall be designed with a track so the entire energy recovery wheel cassette can
slide out from the rooftop unit to facilitate cleaning.
The unit shall have 2” Merv 7 filters for the outdoor air before the wheel to help keep the wheel
clean and reduce maintenance. Filter access shall be by a hinged access door with ¼ turn
latches.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 3
E.
F.
G.
H.
I.
J.
K.
L.
2.06
A.
B.
C.
The matrix design shall have channels to reduce cross contamination between the outdoor air
and the exhaust air. The layers shall be effectively captured in aluminum and stainless steel
segment frames that provide a rigid and self-supporting matrix. All diameter and perimeter seals
shall be provided as part of the cassette assembly and shall be factory set. Drive belt(s) of stretch
urethane shall be provided for wheel rim drive without the need for external tensioners or
adjustment.
The total energy recovery wheel shall be coated with silica gel desiccant permanently bonded
without the use of binders or adhesives, which may degrade desiccant performance. The
substrate shall be lightweight polymer and shall not degrade nor require additional coatings for
application in marine or coastal environments. Coated segments shall be washable with
detergent or alkaline coil cleaner and water. Desiccant shall not dissolve nor deliquesce in the
presence of water or high humidity.
Wheels shall be provided with removable energy transfer matrix. Wheel frame construction shall
be a welded hub, spoke and rim assembly of stainless, plated and/or coated steel and shall be
self-supporting without matrix segments in place. Segments shall be removable without the use of
tools to facilitate maintenance and cleaning.
Wheel bearings shall be selected to provide an L-10 life in excess of 400,000 hours. Rim shall be
continuous rolled stainless steel. Wheels shall be connected to the shaft by means of taper lock
hubs.
The exhaust air fan shall be a direct drive SWSI plenum fan. The exhaust fan shall be sized for
the airflow requirements per the construction schedule. The unit controller shall control the
exhaust fan to maintain building pressure. A VFD shall be provided for the exhaust fan motor or
the exhaust fan motor shall be an ECM motor. The rooftop unit shall have single point electrical
power connection and shall be ETL listed.
The control of the energy recovery wheel shall be an integral part of the rooftop unit’s DDC
controller. The DDC controller shall have visibility of the outdoor air temperature, leaving wheel
temperature, return air temperature, and exhaust air temperature. These temperatures shall be
displayed at the rooftop units DDC controller LCD display. All of these temperatures shall be
made available through the BACnet interface.
The rooftop unit with the energy recovery wheel shall incorporate the economizer operation. The
energy recovery wheel shall have a bypass damper. When the unit is in the economizer mode of
operation the energy recovery wheel shall stop and the bypass dampers shall be opened. The
outdoor air shall be drawn through the bypass dampers to reduce the pressure drop of the
outdoor airstream.
The rooftop unit DDC controller shall provide frost control for the energy recovery wheel. When a
frost condition is encountered the unit controller shall stop the wheel. When in the frost control
mode the wheel shall be jogged periodically and not be allowed to stay in the stationary position.
EXHAUST FAN
Exhaust fan shall be a single width, single inlet (SWSI) airfoil centrifugal fan. The fan wheel shall
be Class II construction with aluminum fan blades that are continuously welded to the hub plate
and end rim. The exhaust fan shall be a direct drive fan mounted to the motor shaft
The fan motor shall be a totally enclosed EC motor that is speed controlled by the rooftop unit
controller. The motor shall include thermal overload protection and protect the motor in the case
of excessive motor temperatures. The motor shall have phase failure protection and prevent the
motor from operation in the event of a loss of phase. Motors shall be premium efficiency.
Fan assembly shall be a slide out assembly for servicing and maintenance.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 4
D.
2.07
A.
2.08
A.
B.
C.
D.
E.
2.09
A.
B.
C.
The unit DDC controller shall provide building static pressure control. The unit controller shall
provide proportional control of the exhaust fans from 25% to 100% of the supply air fan designed
airflow to maintain the adjustable building pressure setpoint. The field shall mount the required
sensing tubing from the building to the factory mounted building static pressure sensor.
FILTERS
Unit shall be provided with a draw-through filter section. The filter rack shall be designed to
accept a 2” prefilter and a 4” final filter. The unit design shall have a hinged access door for the
filter section. The manufacturer shall ship the rooftop unit with 2” construction filters. The
contractor shall furnish and install, at building occupancy, the final set of filters per the contract
documents.
COOLING COIL
The indoor coil section shall be installed in a draw through configuration, upstream of the supply
air fan. The coil section shall be complete with a factory piped cooling coil and an ASHRAE 62.1
compliant double sloped drain pan.
The direct expansion (DX) cooling coils shall be fabricated of seamless high efficiency copper
tubing that is mechanically expanded into high efficiency aluminum plate fins. Coils shall be a
multi-row, staggered tube design with a minimum of 3 rows. All cooling coils shall have an
interlaced coil circuiting that keeps the full coil face active at all load conditions. All coils shall be
factory leak tested with high pressure air under water.
The cooling coil shall have an electronic controlled expansion valve. The unit controller shall
control the expansion valve to maintain liquid sub-cooling and the superheat of the refrigerant
system.
The refrigerant suction lines shall be fully insulated from the expansion valve to the compressors.
The drain pan shall be stainless steel and positively sloped. The slope of the drain pan shall be
in two directions and comply with ASHRAE Standard 62.1. The drain pan shall have a minimum
slope of 1/8" per foot to provide positive draining. The drain pan shall extend beyond the leaving
side of the coil. The drain pan shall have a threaded drain connection extending through the unit
base.
HOT GAS REHEAT
Unit shall be equipped with a fully modulating hot gas reheat coil with hot gas coming from the
unit condenser
Hot gas reheat coil shall be a Micro Channel design. The aluminum tube shall be a micro
channel design with high efficiency aluminum fins. Fins shall be brazed to the tubing for a direct
bond. The capacity of the reheat coil shall allow for a 20°F temperature rise at all operating
conditions.
The modulating hot gas reheat systems shall allow for independent control of the cooling coil
leaving air temperature and the reheat coil leaving air temperature. The cooling coil and reheat
coil leaving air temperature set-points shall be adjustable through the unit controller. During the
dehumidification cycle the unit shall be capable of 100% of the cooling capacity. The hot gas
reheat coil shall provide discharge temperature control within +/- 2°F.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 5
D.
2.10
A.
B.
C.
D.
E.
2.11
A.
B.
C.
D.
E.
F.
2.12
A.
2.13
A.
Each coil shall be factory leak tested with high-pressure air under water.
SUPPLY FAN
Supply fan shall be a single width, single inlet (SWSI) airfoil centrifugal fan. The fan wheel shall
be Class II construction with aluminum fan blades that are continuously welded to the hub plate
and end rim. The supply fan shall be a direct drive fan mounted to the motor shaft.
Fan assembly shall be a slide out assembly for servicing and maintenance
All fan assemblies shall be statically and dynamically balanced at the factory, including a final trim
balance, prior to shipment.
The fan motor shall be a totally enclosed EC motor that is speed controlled by the rooftop unit
controller. The motor shall include thermal overload protection and protect the motor in the case
of excessive motor temperatures. The motor shall have phase failure protection and prevent the
motor from operation in the event of a loss of phase. Motors shall be premium efficiency.
The supply fan shall be capable of airflow modulation from 30% to 100% of the scheduled
designed airflow. The fan shall not operate in a state of surge at any point within the modulation
range.
HEATING SECTION
The rooftop unit shall include a natural gas heating section. The gas furnace design shall be one
natural gas fired heating module factory installed downstream of the supply air fan in the heat
section. The heating module shall be a tubular design with in-shot gas burners.
Each module shall have two stages of heating control. The module shall be complete with
furnace controller and control valve capable of 10:1 modulating operation.
The heat exchanger tubes shall be constructed of stainless steel.
The module shall have an induced draft fan that will maintain a negative pressure in the heat
exchanger tubes for the removal of the flue gases.
Each burner module shall have two flame roll-out safety protection switches and a high
temperature limit switch that will shut the gas valve off upon detection of improper burner
manifold operation. The induced draft fan shall have an airflow safety switch that will prevent the
heating module from turning on in the event of no airflow in the flue chamber.
The factory-installed DDC unit control system shall control the gas heat module. Field installed
heating modules shall require a field ETL certification. The manufacturer’s rooftop unit ETL
certification shall cover the complete unit including the gas heating modules.
HEAT PUMP HEATING
The refrigerant system shall have a pump-down cycle.
CONDENSING SECTION
Outdoor coils shall have seamless copper tubes, mechanically bonded into aluminum plate-type
fins. The fins shall have full drawn collars to completely cover the tubes. A sub-cooling coil shall
be an integral part of the main outdoor air coil. Each outdoor air coil shall be factory leak tested
with high-pressure air under water.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 6
B.
C.
D.
E.
F.
G.
2.14
A.
B.
C.
2.15
A.
Fan motors shall be an ECM type motor for proportional control. The unit controller shall
proportionally control the speed of the condenser fan motors to maintain the head pressure of the
refrigerant circuit from ambient condition of 0~125°F. Mechanical cooling shall be provided to 25º
F. The motor shall include thermal overload protection and protect the motor in the case of
excessive motor temperatures. The motor shall have phase failure protection and prevent the
motor from operation in the event of a loss of phase.
The condenser fan shall be low noise blade design. Fan blade design shall be a dynamic profile
for low tip speed. Fan blade shall be of a composite material.
The unit shall have scroll compressors. One of the compressors shall be an inverter compressor
providing proportional control. The unit controller shall control the speed of the compressor to
maintain the discharge air temperature.
Pressure transducers shall be provided for the suction pressure and head pressure.
Temperature sensor shall be provided for the suction temperature and the refrigerant discharge
temperature of the compressors. All of the above devices shall be an input to the unit controller
and the values be displayed at the unit controller.
Refrigerant circuit shall have a bypass valve between the suction and discharge refrigerant lines
for low head pressure compressor starting and increased compressor reliability. When there is a
call for mechanical cooling the bypass valve shall open to equalizing the suction and discharge
pressures. When pressures are equalized the bypass valve shall close and the compressor shall
be allowed to start.
Each circuit shall be dehydrated and factory charged with R-410A Refrigerant and oil.
ELECTRICAL
Unit wiring shall comply with NEC requirements and with all applicable UL standards. All electrical
components shall be UL recognized where applicable. All wiring and electrical components
provided with the unit shall be number and color-coded and labeled according to the electrical
diagram provided for easy identification. The unit shall be provided with a factory wired
weatherproof control panel. Unit shall have a single point power terminal block for main power
connection. A terminal board shall be provided for low voltage control wiring. Branch short circuit
protection, 115-volt control circuit transformer and fuse, system switches, and a high temperature
sensor shall also be provided with the unit. Each compressor and condenser fan motor shall be
furnished with contactors and inherent thermal overload protection. Supply fan motors shall have
contactors and external overload protection. Knockouts shall be provided in the bottom of the
main control panels for field wiring entrance.
A GFI receptacle shall be unit mounted that is field powered.
A single non-fused disconnect switch shall be provided for disconnecting electrical power at the
unit. Disconnect switches shall be mounted internally to the control panel and operated by an
externally mounted handle.
CONTROLS
Provide a complete integrated microprocessor based Direct Digital Control (DDC) system to
control all unit functions including temperature control, scheduling, monitoring, unit safety
protection, including compressor minimum run and minimum off times, and diagnostics. This
system shall consist of all required temperature sensors, pressure sensors, controller and
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 7
B.
C.
D.
E.
F.
keypad/display operator interface. All MCBs and sensors shall be factory mounted, wired and
tested.
The stand-alone DDC controllers shall not be dependent on communications with any on-site or
remote PC or master control panel for proper unit operation. The microprocessor shall maintain
existing set points and operate stand-alone if the unit loses either direct connect or network
communications. The microprocessor memory shall be protected from voltage fluctuations as well
as any extended power failures. All factory and user set schedules and control points shall be
maintained in nonvolatile memory. No settings shall be lost, even during extended power
shutdowns.
The DDC control system shall permit starting and stopping of the unit locally or remotely. The
control system shall be capable of providing a remote alarm indication. The unit control system
shall provide for outside air damper actuation, emergency shutdown, remote heat enable/disable,
remote cool enable/disable, heat indication, cool indication, and fan operation.
All digital inputs and outputs shall be protected against damage from transients or incorrect
voltages. All field wiring shall be terminated at a separate, clearly marked terminal strip
The DDC controller shall have a built-in time schedule. The schedule shall be programmable from
the unit keypad interface. The schedule shall be maintained in nonvolatile memory to insure that it
is not lost during a power failure. There shall be one start/stop per day and a separate holiday
schedule. The controller shall accept up to sixteen holidays each with up to a 5-day duration.
Each unit shall also have the ability to accept a time schedule via BAS network communications.
The keypad interface shall allow convenient navigation and access to all control functions. The
unit keypad/display character format shall be 4 lines x 20 characters. All control settings shall be
password protected against unauthorized changes. For ease of service, the display format shall
be English language readout. Coded formats with look-up tables will not be accepted. The user
interaction with the display shall provide the following information as a minimum:
1. Return air temperature.
2. Discharge air temperature.
3. Outdoor air temperature.
4. Space air temperature.
5. Outdoor enthalpy, high/low.
6. Compressor suction temperature and pressure
7. Compressor head pressure and temperature
8. Expansion valve position
9. Condenser fan speed
10. Inverter compressor speed
11. Dirty filter indication.
12. Airflow verification.
13. Cooling status.
14. Control temperature (Changeover).
15. VAV box output status.
16. Cooling status/capacity.
17. Unit status.
18. All time schedules.
19. Active alarms with time and date.
20. Previous alarms with time and date.
21. Optimal start
22. Supply fan and exhaust fan speed.
23. System operating hours.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 8
a.
b.
c.
d.
e.
f.
g.
G.
Fan
Exhaust fan
Cooling
Individual compressor
Heating
Economizer
Tenant override
The user interaction with the keypad shall provide the following:
1. Controls mode
a. Off manual
b. Auto
c. Heat/Cool
d. Cool only
e. Heat only
f. Fan only
2. Occupancy mode
a. Auto
b. Occupied
c. Unoccupied
H.
Tenant override
1. Unit operation changeover control
a. Return air temperature
b. Space temperature
c. Network signal
I.
Cooling and heating change-over temperature with deadband
1. Cooling discharge air temperature (DAT)
2. Supply reset options
a.
b.
c.
d.
e.
f.
g.
J.
Return air temperature
Outdoor air temperature
Space temperature
Airflow (VAV)
Network signal
External (0-10 vdc)
External (0-20 mA)
Temperature alarm limits
a. High supply air temperature
b. Low supply air temperature
c. High return air temperature
K.
Lockout control for compressors.
1. Compressor interstage timers
2. Night setback and setup space temperature.
3. Building static pressure.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 9
4. Economizer changeover
a. Enthalpy
b. Drybulb temperature
L.
Currently time and date
1. Tenant override time
2. Occupied/unoccupied time schedule
3. One event schedule
4. Holiday dates and duration
5. Adjustable set points
6. Service mode
a. Timers normal (all time delays normal)
b. Timers fast (all time delays 20 sec)
M.
N.
2.16
A.
If the unit is to be programmed with a night setback or setup function, an optional space sensor
shall be provided. Space sensors shall be available to support field selectable features. Sensor
options shall include:
1. Zone sensor with tenant override switch
2. Zone sensor with tenant override switch plus heating and cooling set point adjustment.
(Space Comfort Control systems only)
To increase the efficiency of the cooling system the DDC controller shall include a discharge air
temperature reset program for part load operating conditions. The discharge air temperature
shall be controlled between a minimum and a maximum discharge air temperature (DAT) based
on one of the following inputs:
1. Airflow
2. Outside air temperature
3. Space temperature
4. Return air temperature
5. External signal of 1-5 vdc
6. External signal of 0-20 mA
7. Network signal
ROOF CURB
A pre-fabricated 14-gauge galvanized steel, mounting curb shall be provided for field assembly
on the roof decking prior to unit shipment. The roof curb shall be a full perimeter type with
complete perimeter support of the air handling section and condensing section. The curb shall be
a minimum of 14" high and include a nominal 2" x 4" wood nailing strip. Gasket shall be provided
for field mounting between the unit base and roof curb.
PART 3: EXECUTION
3.01
EXAMINATION
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 10
A.
3.02
Examine roof for compliance with requirements for conditions affecting installation and
performance of rooftop units. Do not proceed with installation until unsatisfactory conditions have
been corrected.
INSTALLATION
A.
Install units according to manufacturer's written instructions.
B.
Install units level and plumb, maintaining manufacturer's recommended clearances.
C.
Curb Support: Install roof curb on roof structure, level, according to NRCA's written installation
instructions. Install and secure rooftop units on curbs and coordinate roof penetrations and
flashing with roof construction. Roof curb shall be sloped to accommodate roof slope so that
equipment will remain level.
D.
Unit Support: Install unit on structural curbs and level. Coordinate wall penetrations and flashing
with wall construction.
E.
All roof penetrations shall be within roof curb unless noted otherwise.
3.03
A.
CONNECTIONS
Piping installation requirements are specified in other Division 15 Sections. Drawings indicate the
general arrangement of piping, fittings, and specialties. The following are specific connection
requirements:
1.
2.
B.
3.04
Install piping to allow service and maintenance.
Gas Piping: Conform to applicable requirements of Division 15 Section "Natural Gas Piping."
Connect gas piping to burner, full size of gas train inlet, and provide union with sufficient
clearance for burner removal and service.
Duct installation requirements are specified in other Division 15 Sections. Drawings indicate the
general arrangement of ducts.
SYSTEM START-UP
A.
Verify that installation is as indicated and specified.
B.
Complete manufacturer's installation and startup checks and perform the following:
1.
2.
3.
4.
5.
Level unit on housekeeping base, and flash curbs to unit and to roof.
Verify that controls are connected and operable.
Remove shipping bolts, blocks, and tie-down straps.
Verify that filters are installed.
Check that burner and controls are suitable to operate at temperatures as low as minus 40
deg F (minus 40 deg C).
C.
Lubricate bearings on fan.
D.
Check fan-wheel rotation for correct direction without vibration and binding.
E.
Adjust fan belts to proper alignment and tension.
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 11
F.
Start unit according to manufacturer's written instructions.
1.
2.
Perform starting of refrigeration in summer only.
Complete startup sheets and attach copy with Contractor's startup report.
G.
Check and record performance of interlocks and protection devices; verify sequences.
H.
Operate unit for an initial period as recommended or required by manufacturer.
I.
Perform the following operations for both minimum and maximum firing, and adjust burner for
peak efficiency. Adjust pilot to stable flame.
1.
2.
3.
Measure gas pressure on manifold.
Measure combustion-air temperature at inlet to combustion chamber.
Measure flue-gas temperature at furnace discharge.
J.
Calibrate thermostats.
K.
Adjust and check high-temperature limits.
L.
Check internal isolators.
M.
Check outside-air damper for proper stroke and interlock with return-air dampers.
N.
Check controls for correct sequencing of heating, mixing dampers, refrigeration, and normal and
emergency shutdown.
O.
Start refrigeration and measure and record the following:
1.
2.
3.
4.
P.
3.05
A.
Coil leaving-air, dry- and wet-bulb temperatures.
Coil entering-air, dry- and wet-bulb temperatures.
Outside-air, dry-bulb temperature.
Air-cooled-condenser, discharge-air, dry-bulb temperature.
After starting and performance testing, change filters, vacuum heat exchanger and cooling and
condenser coils, lubricate bearings, adjust belt tension, and check operation of power vents.
DEMONSTRATION
Engage a factory-authorized service representative to train Owner's maintenance personnel as
specified below:
1.
2.
3.
Train Owner's maintenance personnel on procedures and schedules related to startup and
shutdown, troubleshooting, servicing, and preventive maintenance.
Review data in the maintenance manuals. Refer to Division 15 Section "Basic Mechanical
Requirements."
Schedule training with Owner, with at least 7 days' advance notice.
END OF SECTION 15780
PACKAGED ROOFTOP MAKE-UP AIR UNITS
1230
15780- 12
SECTION 15781 - ROOFTOP UNITS
PART 1: GENERAL
1.01
A.
1.02
A.
B.
C.
D.
E.
F.
1.03
A.
B.
1.04
A.
1.05
A.
B.
C.
1.06
A.
B.
C.
Section Includes:
Packaged rooftop air conditioners
REFERENCES
ARI 340/360 - Unitary Large Equipment
IMC 2000 – International Mechanical Code
NEMA MG1—Motors and Generators
National Electrical Code.
NFPA 70—National Fire Protection Agency.
SMACNA—HVAC Duct Construction Standards—Metal and Flexible.
SUBMITTALS
Shop Drawings: Indicate assembly, unit dimensions, weight loading, required clearances, construction details,
field connection details, electrical characteristics and connection requirements.
Product Data:
1. Provide literature that indicates dimensions, weights, capacities, ratings, fan performance, and electrical
characteristics and connection requirements.
2. Provide computer generated fan curves with specified operating point clearly plotted.
3. Manufacturer’s Installation Instructions.
OPERATION AND MAINTANENCE DATA
Maintenance Data: Provide instructions for installation, maintenance and service
QUALIFICATIONS
Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum five
years documented experience, who issues complete catalog data on total product.
Startup must be done by trained personnel experienced with rooftop equipment.
Do not operate units for any purpose, temporary or permanent, until ductwork is clean, filters and remote
controls are in place, bearings lubricated, and manufacturers’ installation instructions have been followed.
DELIVERY, STORAGE, AND HANDLING
Deliver, store, protect and handle products to site.
Accept products on site and inspect for damage.
Store in clean dry place and protect from weather and construction traffic. Handle carefully to avoid damage
to components, enclosures, and finish.
ROOFTOP UNITS
1230
15781 - 1
PART 2: PRODUCTS
2.01
A.
MANUFACTURERS
Approved Manufacturers
1.
2.
3.
4.
5.
2.02
A.
B.
GENERAL DESCRIPTION
Furnish as shown on plans Packaged Rooftop Heating and Cooling Unit(s. Unit performance and electrical
characteristics shall be per the job schedule.
Configuration: Fabricate as detailed on prints and drawings:
1.
2.
3.
4.
5.
6.
C.
D.
E.
F.
G.
H.
I.
J.
2.03
A.
Carrier
Lennox
McQuay (Basis of Design)
Trane
York
Return plenum / economizer section
Filter section
Cooling coil section
Supply fan section
Gas heating section
Condensing unit section
The complete unit shall be ETL/CETL listed
The burner and gas train for the unit furnace shall be CETL approved.
Each unit shall be specifically designed for outdoor rooftop application and include a weatherproof cabinet.
Each unit shall be completely factory assembled and shipped in one piece. Packaged units shall be shipped
fully charged with Refrigerant 410A and oil.
The unit shall undergo a complete factory run test prior to shipment. The factory test shall include final
balancing of the supply fan assemblies, a refrigeration circuit run test, a unit control system operations
checkout, a unit refrigerant leak test and a final unit inspection.
All units shall have decals and tags to indicate caution areas and aid unit service. Unit nameplates shall be
fixed to the main control panel door. Electrical wiring diagrams shall be attached to the control panels.
Installation, operating and maintenance bulletins and start-up forms shall be supplied with each unit.
Performance: All scheduled capacities and face areas are minimum accepted values. All scheduled amps,
kW, and HP are maximum accepted values that allow scheduled capacity to be met.
Warranty: The manufacturer shall provide 12-month parts only warranty. Defective parts shall be repaired or
replaced during the warranty period at no charge. The warranty period shall commence at startup or six
months after shipment, whichever occurs first.
The manufacturer shall provide extended 48-month, parts only, warranty on the compressor.
CABINET, CASING, AND FRAME
Panel construction shall be double-wall construction for all panels. All floor panels shall have a solid
galvanized steel inner liner on the air stream side of the unit to protect insulation during service and
maintenance. Insulation shall be a minimum of 1" thick with an R-value of 4.0, and shall be neoprene coated
ROOFTOP UNITS
1230
15781 - 2
B.
C.
D.
2.04
A.
B.
C.
D.
E.
2.05
A.
B.
2.06
A.
glass fiber. Panel design shall include no exposed insulation edges. Unit cabinet shall be designed to
operate at total static pressures up to 5.0 inches w.g.
Exterior surfaces shall be constructed of pre-painted galvanized steel for aesthetics and long term durability.
Paint finish to include a base primer with a high quality, polyester resin topcoat of a neutral beige color.
Finished panel surfaces to withstand a minimum 750-hour salt spray test in accordance with ASTM B117
standard for salt spray resistance.
Service doors shall be provided on the fan section and the filter section in order to provide user access to unit
components. All service access doors shall be mounted on multiple, stainless steel hinges and shall be
secured by a latch system. Removable service panels secured by multiple mechanical fasteners are not
acceptable.
The unit base shall overhang the roof curb for positive water runoff and shall seat on the roof curb gasket to
provide a positive, weather-tight seal. Lifting brackets shall be provided on the unit base to accept cable or
chain hooks for rigging the equipment.
SUPPLY FAN
Supply fan shall be a single width, single inlet (SWSI) airfoil centrifugal fan. The fan blade design shall be a
double blade with the airfoil geometry, a backward inclined blade fan wheel design will not be acceptable.
The fan wheel shall be Class II construction with aluminum fan blades welded to the back plate and end rim.
The supply fan shall be mounted using solid-steel shafts and wheel hubs with mating keyways
The fan assembly shall have fixed pitched drives with a minimum of two belts. The drives shall be selected
with a minimum diameter of 4 inches and a 1.2 service factor. The belts shall be of the grip-notch design.
All fan assemblies shall be statically and dynamically balanced at the factory, including a final trim balance,
prior to shipment. All fan assemblies shall employ solid steel fan shafts. Heavy-duty pillow block type, selfaligning, grease lubricated ball bearings shall be used. Bearings shall be sized to provide a L-50 life at
250,000 hours. The entire fan assembly shall be isolated from the fan bulkhead and mounted on 1” spring
isolators.
Fan motors shall be heavy-duty 1800 rpm open drip-proof (ODP) type with grease lubricated ball bearings.
Motors shall be premium efficiency. Motors shall be mounted on an adjustable base that provides for proper
alignment and belt tension adjustment. Motors shall be suitable for use with a variable frequency drive.
The supply fan shall be capable of airflow modulation from 30% to 100% of the scheduled designed airflow.
The fan shall not operate in a state of surge at any point within the modulation range.
EXHAUST FAN
Direct drive axial exhaust fans shall be provided. Blades shall be constructed with fabricated steel and shall
be securely attached to fan shafts. All exhaust fan assemblies shall be statically and dynamically balanced.
Motors shall be permanently lubricated, heavy-duty type, carefully matched to the fan load. Ground and
polished steel fan shafts shall be mounted in permanently lubricated and sealed ball bearings. Bearings shall
be selected for a minimum (L10) life in excess of 100,000 hours at maximum cataloged operating speeds.
The unit DDC controller shall provide staged exhaust fan control based on outdoor air damper position. The
exhaust fans airflow shall be capable of up to 80% of the supply air fan designed airflow.
ELECTRICAL
Unit wiring shall comply with NEC requirements and with all applicable UL standards. All electrical
components shall be UL recognized where applicable. All wiring and electrical components provided with the
unit shall be number and color-coded and labeled according to the electrical diagram provided for easy
ROOFTOP UNITS
1230
15781 - 3
identification. The unit shall be provided with a factory wired weatherproof control panel. Unit shall have a
single point power terminal block for main power connection. A terminal board shall be provided for low
voltage control wiring. Branch short circuit protection, 115-volt control circuit transformer and fuse, system
switches, and a high temperature sensor shall also be provided with the unit. Each compressor and
condenser fan motor shall be furnished with contactors and inherent thermal overload protection. Supply fan
motors shall have contactors and external overload protection. Knockouts shall be provided in the bottom of
the main control panels for field wiring entrance. A GFI receptacle shall be unit mounted. The receptacle shall
require a field power connection independent from the unit’s main power block and / or disconnect..
2.07
A.
B.
C.
D.
E.
F.
G.
2.08
A.
B.
HEATING AND COOLING SECTIONS
The direct expansion (DX) coil section shall be installed in a draw through configuration, upstream of the
supply air fan. The coil section shall be complete with a factory piped cooling coil and an ASHRAE 62.1
compliant double sloped drain pan.
Direct expansion (DX) cooling coils shall be fabricated of seamless high efficiency copper tubing that is
mechanically expanded into high efficiency aluminum plate fins. Coils shall be a multi-row, staggered tube
design with a minimum of 3 rows and a maximum of 12 fins per inch. All units shall have two independent
refrigerant circuits and shall use an interlaced coil circuiting that keeps the full coil face active at all load
conditions. All coils shall be factory leak tested with high pressure air under water.
A positively sloped drain pan shall be provided with the cooling coil. The slope of the drain pan shall be in two
directions and comply with ASHRAE Standard 62.1. The drain pan shall have a minimum slope of 1/8" per
foot to provide positive draining. The drain pan shall extend beyond the leaving side of the coil. The drain pan
construction shall be a stainless steel design. The drain pan shall be connected to a threaded drain
connection extending through the unit base. Drain pan shall be removable from the side of the unit without
the removal of the cooling coil.
The rooftop unit shall include a natural gas heating section. The gas furnace design shall be one or more
natural gas fired heating modules factory installed downstream of the supply air fan in the heat section. Each
module shall have two stages of heating control. The heating module shall be a tubular design with in-shot
gas burners. The heat exchanger tubes shall be constructed of 20 ga, G160, aluminized steel. The module
shall have an induced draft fan that will maintain a negative pressure in the heat exchanger tubes for the
removal of the flue gases.
Each burner module shall have two flame roll-out safety protection switches and a high temperature limit
switch that will shut the gas valve off upon detection of improper burner manifold operation. The induced draft
fan shall have an airflow safety switch that will prevent the heating module from turning on in the event of no
airflow in the flue chamber.
The factory-installed DDC unit control system shall control the gas heat module. Field installed heating
modules shall require a field ETL certification. The manufacturer’s rooftop unit ETL certification shall cover the
complete unit including the gas heating modules.
The heating modules shall have a field installed kit for conversion of the unit to LP gas.
HOT GAS REHEAT
Unit shall be equipped with a fully modulating hot gas reheat coil with hot gas coming from the unit
condenser.
Hot gas coil shall be an all-aluminum design. The aluminum tube shall be a micro channel design with high
efficiency aluminum fins. Fins shall be brazed to the tubing for a direct bond. Each condenser coil shall be
factory leak tested with high-pressure air under water.
ROOFTOP UNITS
1230
15781 - 4
C.
D.
E.
F.
2.09
A.
2.10
A.
2.11
A.
B.
C.
Hot gas coil shall be sized to allow for full condensing across the operation range of the unit. High
temperature liquid shall be piped downstream of the unit’s condenser coils into the liquid line.
The refrigeration circuit shall not require receivers. The hot gas coil shall be used for refrigerant storage when
the unit is not operation in a dehumidification or reheat mode.
The hot gas reheat option shall have a fully modulated control to allow for unit leaving air temperature control
to +/- 2°.
The modulating hot gas reheat systems shall allow for independent control of the cooling coil leaving air
temperature and the reheat coil leaving air temperature. The cooling and reheat leaving air temperature setpoints shall be adjustable through the unit MT III controller.
FILTERS
Unit shall be provided with a draw-through filter section. The filter rack shall be designed to accept a 2” prefilter and a 4” final filter. The unit design shall have a hinged access door for the filter section. The
manufacturer shall ship the rooftop unit with 2” construction filters. The contractor shall furnish and install, at
building occupancy, the final set of filters per the contract documents.
OUTDOOR / RETURN AIR SECTION
Unit shall be provided with an outdoor air economizer section. The 0 to 100% outside air economizer section
shall include outdoor, return, and exhaust air dampers. The outdoor air hood shall be factory installed and
constructed from galvanized steel finished with the same durable paint finish as the main unit. The hood shall
include moisture eliminator filters to drain water away from the entering air stream. The outside and return air
dampers shall be sized to handle 100% of the supply air volume. The dampers shall be opposed blade
design. Damper blades shall be gasketed with side seals to provide an air leakage rate of 4 cfm / square foot
of damper area at 1” differential pressure per ASHRAE 90.1 Energy Standard . Leakage rate to be tested in
accordance with AMCA Standard 500. A barometric exhaust damper shall be provided to exhaust air out of
the back of the unit. A bird screen shall be provided to prevent infiltration of rain and foreign materials.
Exhaust damper blades shall be lined with vinyl gasketing on contact edges. Control of the dampers shall be
by a factory installed direct coupled actuator. Damper actuator shall be of the modulating, spring return type.
An adjustable dry bulb control shall be provided to sense the dry-bulb temperature of the outdoor air stream to
determine if outdoor air is suitable for “free” cooling. If outdoor air is suitable for “free” cooling, the outdoor air
dampers shall modulate in response to the unit’s temperature control system.
CONDENSING SECTION
Condenser coils shall be an all-aluminum design. The aluminum tube shall be a micro channel design with
high efficiency aluminum fins. Fins shall be brazed to the tubing for a direct bond. Each condenser coil shall
be factory leak tested with high-pressure air under water. Condenser coils shall be protected from incidental
contact to coil fins by a coil guard. Coil guard shall be constructed of cross wire welded steel with PVC
coating
Condenser fans shall be direct drive, axial type designed for low tip speed and vertical air discharge.
Condenser fan rpm shall be 1140 rpm maximum. Fan blades shall be constructed of steel and riveted to a
steel center hub. Condenser fan motors shall be heavy-duty, inherently protected, three-phase, non-reversing
type with permanently lubricated ball bearing and integral rain shield.
Each circuit shall have fan cycling of at least one condenser fan to maintain positive head pressure. An
ambient thermostat shall prevent the refrigeration system from operating below 0º F.
ROOFTOP UNITS
1230
15781 - 5
D.
E.
F.
2.12
A.
2.13
A.
B.
C.
D.
E.
F.
Condenser coils shall be protected from hail damage as an integral part of the unit design. Hail guards shall
be provided on all units with vertical mounted condenser coils.
Each unit shall have multiple, heavy-duty scroll compressors. Each compressor shall be complete with gauge
ports, crankcase heater, sight-glass, anti-slug protection, motor overload protection and a time delay to
prevent short cycling and simultaneous starting of compressors following a power failure. Compressors shall
be isolated with resilient rubber isolators to decrease noise transmission
Each unit shall have two independent refrigeration circuits. Each circuit shall be complete with a low pressure
control, filter-drier, liquid moisture indicator/sight-glass, thermal expansion valve, and a manual reset high
pressure safety switch. The thermal expansion valve shall be capable of modulation from 100% to 25% of its
rated capacity. Sight-glasses shall be accessible for viewing without disrupting unit operation. Each circuit
shall be dehydrated and factory charged with Refrigerant 410A and oil
ROOF CURB
A pre-fabricated 14-gauge galvanized steel, mounting curb shall be provided for field assembly on the roof
decking prior to unit shipment. The roof curb shall be a full perimeter type with complete perimeter support of
the air handling section and condensing section. The curb shall be a minimum of 14" high and include a
nominal 2" x 4" wood nailing strip. Gasket shall be provided for field mounting between the unit base and roof
curb.
CONTROLS
Provide a complete integrated microprocessor based Direct Digital Control (DDC) system to control all unit
functions including temperature control, scheduling, monitoring, unit safety protection, including compressor
minimum run and minimum off times, and diagnostics. This system shall consist of all required temperature
sensors, pressure sensors, controller and keypad/display operator interface. All MCBs and sensors shall be
factory mounted, wired and tested.
The stand-alone DDC controllers shall not be dependent on communications with any on-site or remote PC or
master control panel for proper unit operation. The microprocessor shall maintain existing set points and
operate stand-alone if the unit loses either direct connect or network communications. The microprocessor
memory shall be protected from voltage fluctuations as well as any extended power failures. All factory and
user set schedules and control points shall be maintained in nonvolatile memory. No settings shall be lost,
even during extended power shutdowns.
The DDC control system shall permit starting and stopping of the unit locally or remotely. The control system
shall be capable of providing a remote alarm indication. The unit control system shall provide for outside air
damper actuation, emergency shutdown, remote heat enable/disable, remote cool enable/disable, heat
indication, cool indication, and fan operation.
All digital inputs and outputs shall be protected against damage from transients or incorrect voltages. All field
wiring shall be terminated at a separate, clearly marked terminal strip.
The DDC controller shall have a built-in time schedule. The schedule shall be programmable from the unit
keypad interface. The schedule shall be maintained in nonvolatile memory to insure that it is not lost during a
power failure. There shall be one start/stop per day and a separate holiday schedule. The controller shall
accept up to sixteen holidays each with up to a 5-day duration. Each unit shall also have the ability to accept
a time schedule via BAS network communications.
The keypad interface shall allow convenient navigation and access to all control functions. The unit
keypad/display character format shall be 4 lines x 20 characters. All control settings shall be password
protected against unauthorized changes. For ease of service, the display format shall be English language
ROOFTOP UNITS
1230
15781 - 6
readout. Coded formats with look-up tables will not be accepted. The user interaction with the display shall
provide the following information as a minimum:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
G.
Return air temperature
Discharge air temperature
Outdoor air temperature
Space air temp
Dirty filter indication
Airflow verification
Cooling status
Control temperature (Changeover)
VAV box output status
Cooling status/capacity
Unit status
All time schedules
Active alarms w/time and date
Previous alarms with time and date
Optimal start
System operating hours
a. Fan
b. Exhaust fan
c. Cooling
d. Individual compressor
e. Heating
f. Economizer
g. Tenant override
The user interaction with the keypad shall provide the following set-points as a minimum:
1. Controls mode
a. Off manual
b. Auto
c. Heat/cool
d. Cool only
e. Heat only
f. Fan only
2. Occupancy mode
a. Auto
b. Occupied
c. Unoccupied
d. Tenant override
3. Unit operation changeover control
a. Return air temperature
b. Space temperature
c. Network signal
4. Cooling and heating change-over temperature with deadband
5. Cooling discharge air temperature (DAT)
6. Supply reset options
ROOFTOP UNITS
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a. Return air temperature
b. Outdoor air temperature
c. Space temperature
d. Airflow (VAV)
e. Network signal
f. External (0-10 vdc)
g. External (0-20mA)
7. Temperature alarm limits
a. High supply air temperature
b. Low supply air temperature
c. High return air temperature
8. Lockout control for compressors
9. Compressor inter stage timers
10. Night setback and setup space temperature
11. Building static pressure
12. Economizer changeover
a. Enthalpy
b. Drybulb temperature
13. Current time and date
14. Tenant override time
15. Occupied/unoccupied time schedule
16. One event schedule
17. Holiday dates and duration
18. Service mode
a. Timers normal (all time delays normal)
b. Timers fast (all time delays 20 sec)
H. If the unit is to be programmed with a night setback or setup function, an optional space sensor shall be
provided. Space sensors shall be available to support field selectable features. Sensor options shall include:
1. Zone sensor with tenant override switch
2. Zone sensor with tenant override switch plus heating and cooling set point adjustment. (Space Comfort
Control systems only)
I.
To increase the efficiency of the cooling system the DDC controller shall include a discharge air temperature
reset program for part load operating conditions. The discharge air temperature shall be controlled between a
minimum and a maximum discharge air temperature (DAT) based on one of the following inputs:
1.
2.
3.
4.
5.
6.
7.
3.01
Airflow
Outside air temperature
Space Temperature
Return air temperature
External signal of 1-5 VDC
External signal of 0-20 mA
Network signal
EXAMINATION
ROOFTOP UNITS
1230
15781 - 8
A.
3.02
A.
B.
C.
D.
E.
3.03
A.
Examine roof for compliance with requirements for conditions affecting installation and performance of rooftop
units. Do not proceed with installation until unsatisfactory conditions have been corrected.
INSTALLATION
Install units according to manufacturer's written instructions.
Install units level and plumb, maintaining manufacturer's recommended clearances.
Curb Support: Install roof curb on roof structure, level, according to NRCA's written installation instructions.
Install and secure rooftop units on curbs and coordinate roof penetrations and flashing with roof construction.
Roof curb shall be sloped to accommodate roof slope so that equipment will remain level.
Unit Support: Install unit on structural curbs and level. Coordinate wall penetrations and flashing with wall
construction.
All roof penetrations shall be within roof curb unless noted otherwise.
CONNECTIONS
Piping installation requirements are specified in other Division 15 Sections. Drawings indicate the general
arrangement of piping, fittings, and specialties. The following are specific connection requirements:
1. Install piping to allow service and maintenance.
2. Gas Piping: Conform to applicable requirements of Division 15 Section "Natural Gas Piping." Connect
gas piping to burner, full size of gas train inlet, and provide union with sufficient clearance for burner
removal and service.
B.
3.04
A.
B.
Duct installation requirements are specified in other Division 15 Sections. Drawings indicate the general
arrangement of ducts.
SYSTEM START-UP
Verify that installation is as indicated and specified.
Complete manufacturer's installation and startup checks and perform the following:
1.
2.
3.
4.
5.
C.
D.
E.
F.
Level unit on housekeeping base, and flash curbs to unit and to roof.
Verify that controls are connected and operable.
Remove shipping bolts, blocks, and tie-down straps.
Verify that filters are installed.
Check that burner and controls are suitable to operate at temperatures as low as minus 40 deg F (minus
40 deg C).
Lubricate bearings on fan.
Check fan-wheel rotation for correct direction without vibration and binding.
Adjust fan belts to proper alignment and tension.
Start unit according to manufacturer's written instructions.
1. Perform starting of refrigeration in summer only.
2. Complete startup sheets and attach copy with Contractor's startup report.
G.
Check and record performance of interlocks and protection devices; verify sequences.
ROOFTOP UNITS
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H.
I.
Operate unit for an initial period as recommended or required by manufacturer.
Perform the following operations for both minimum and maximum firing, and adjust burner for peak efficiency.
Adjust pilot to stable flame.
1. Measure gas pressure on manifold.
2. Measure combustion-air temperature at inlet to combustion chamber.
3. Measure flue-gas temperature at furnace discharge.
J.
K.
L.
M.
N.
O.
Calibrate thermostats.
Adjust and check high-temperature limits.
Check internal isolators.
Check outside-air damper for proper stroke and interlock with return-air dampers.
Check controls for correct sequencing of heating, mixing dampers, refrigeration, and normal and emergency
shutdown.
Start refrigeration and measure and record the following:
1.
2.
3.
4.
P.
Coil leaving-air, dry- and wet-bulb temperatures.
Coil entering-air, dry- and wet-bulb temperatures.
Outside-air, dry-bulb temperature.
Air-cooled-condenser, discharge-air, dry-bulb temperature.
Verify operation of remote panel, including pilot-light operation and failure modes. Check the following:
1. High-limit heat exchanger.
2. Freeze-stat operation.
3. Free-cooling mode, outside-air changeover.
Q.
3.05
A.
After starting and performance testing, change filters, vacuum heat exchanger and cooling and condenser
coils, lubricate bearings, adjust belt tension, and check operation of power vents.
DEMONSTRATION
Engage a factory-authorized service representative to train Owner's maintenance personnel as specified
below:
1. Train Owner's maintenance personnel on procedures and schedules related to startup and shutdown,
troubleshooting, servicing, and preventive maintenance.
2. Review data in the maintenance manuals. Refer to Division 15 Section "Basic Mechanical
Requirements."
3. Schedule training with Owner, with at least 7 days' advance notice.
END OF SECTION 15782
ROOFTOP UNITS
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SECTION 15782 - VRV INDOOR UNITS
PART 1 – GENERAL
1.1
QUALITY ASSURANCE
A.
The units shall be listed by Electrical Laboratories (ETL) and bear the ETL label.
B.
All wiring shall be in accordance with the National Electric Code (NEC).
C.
The system will be produced in an ISO 9001 and ISO 14001 facility, which are standards
set by the International Standard Organization (ISO). The system shall be factory tested
for safety and function.
D.
The outdoor unit will be factory charged with R-410A.
1.2
A.
1.3
A.
DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled according to the manufacturer’s
recommendations.
WARRANTY
The units shall have a manufacturer’s warranty for a period of one (1) year from date of
installation. The units shall have a limited labor warranty for a period of one (1) year from
date of installation. The compressors shall have a warranty of six (6) years from date of
installation. During the stated period, should any part fail due to defects in material and
workmanship, it shall be repaired or replaced at the discretion of Daikin AC (Americas),
Inc. according to Daikin’s terms and conditions. All warranty service work shall be
preformed by a Daikin factory trained service professional.
PART 2 – PRODUCTS
2.1
A.
2.2
DESIGN BASIS
The HVAC equipment basis of design is Daikin AC. All bidders shall furnish the minimum
system standards as defined by the base bid model numbers, model families or as
otherwise specified herein (see Key General Specifications Alternate Supplier Checklist).
In any event the contractor shall be responsible for all specified items and intents of this
document without further compensation.
FXFQ – 4 WAY CEILING CASSETTE UNIT (3’x3’)
A. General: The Daikin indoor unit model FXFQ shall be a ceiling cassette fan coil unit,
operable with R-410A refrigerant, equipped with an electronic expansion valve, for
installation into the ceiling cavity equipped with an air panel grill. It shall be available
from 9,000 Btu/h to 48,000 Btu/h. It shall be an eight-way air distribution type capable
of 360 degree airflow, ivory white, impact resistant, and washable decoration panel.
The supply air is distributed via motorized louvers which can be horizontally and
vertically adjusted from 0° to 90°. Computerized PID control shall be used to control
superheat to deliver a comfortable room temperature condition. Equipped with a
programmed drying mechanism that dehumidifies while inhibiting changes in room
VRV INDOOR UNITS
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15782 - 1
temperature when used with Daikin remote control BRC1D71 and BRC2A71. The
indoor units sound pressure shall range from 28 dB(A) to 33 dB(A) at low speed
measured at 5 feet below the unit.
B.
Performance: Each unit’s performance is based on nominal operating conditions:
Model Number
FXFQ12MVJU
(07)
FXFQ12MVJU
(09)
FXFQ12MVJU
FXFQ18MVJU
FXFQ24MVJU
FXFQ30MVJU
FXFQ36MVJU
FXFQ48PVJU
C.
Heating
(Indoor 47°F DB /
43°F WB,
Outdoor 70°F DB, 25 ft
pipe length)
8,500
9,500
10,500
12,000
18,000
24,000
30,000
36,000
48,000
13,500
20,000
27,000
34,000
40,000
54,000
Indoor Unit:
1.
2.
3.
4.
5.
6.
7.
8.
9.
D.
Cooling
(Indoor 80°F DB /
67°F WB,
Outdoor 95°F DB, 25 ft
pipe length)
7,500
The Daikin indoor unit FXFQ shall be completely factory assembled and
tested. Included in the unit is factory wiring, piping, electronic
proportional expansion valve, control circuit board, fan motor thermal
protector, flare connections, condensate drain pan, condensate drain
pump, self-diagnostics, auto-restart function, 3-minute fused time delay,
and test run switch.
Indoor unit and refrigerant pipes will be charged with dehydrated air prior
to shipment from the factory.
Both refrigerant lines shall be insulated from the outdoor unit.
The 4-way supply air flow can be field modified to 3-way and 2-way
airflow to accommodate various installation configurations including
corner installations.
Return air shall be through the concentric panel, which includes a resin
net mold resistant filter.
The indoor units shall be equipped with a condensate pan and
condensate pump. The condensate pump provides up to 21” of lift.
The indoor units shall be equipped with a return air thermistor.
The indoor unit will be separately powered with 208~230V/1phase/60Hz.
The voltage range will be 253 volts maximum and 187 volts minimum.
Unit Cabinet:
1.
2.
3.
4.
5.
The cabinet shall be space saving and shall be located into the ceiling.
Three auto-swing positions shall be available to choose, which include
standard, draft prevention and ceiling stain prevention.
The airflow of the unit shall have the ability to shut down one or two sides
allowing for simpler corner installation.
Fresh air intake shall be possible by way of Daikin’s optional fresh air
intake kit.
A branch duct knockout shall exist for branch ducting supply air.
VRV INDOOR UNITS
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6.
7.
E.
Fan:
1.
2.
3.
4.
F.
2.
3.
4.
5.
6.
7.
2.
3.
A separate power supply will be required of 208/230 volts, 1 phase, 60
hertz. The acceptable voltage range shall be 187 to 253 volts.
Transmission (control) wiring between the indoor and outdoor unit shall
be a maximum of 3,280 feet (total 6,560 feet).
Transmission (control) wiring between the indoor and remote controller
shall be a maximum distance of 1,640 feet.
Control:
1.
2.
J.
Coils shall be of the direct expansion type constructed from copper tubes
expanded into aluminum fins to form a mechanical bond.
The coil shall be of a waffle louver fin and high heat exchange, rifled bore
tube design to ensure highly efficient performance.
The coil shall be a 2-row cross fin copper evaporator coil with 17 FPI
design completely factory tested.
The refrigerant connections shall be flare connections and the
condensate will be 1 -1/4 inch outside diameter PVC.
A condensate pan shall be located under the coil.
A condensate pump with a 21 inch lift shall be located below the coil in
the condensate pan with a built in safety alarm.
A thermistor will be located on the liquid and gas line.
Electrical:
1.
I.
The return air shall be filtered by means of a washable long-life filter with
mildew proof resin.
Coil:
1.
H.
The fan shall be direct-drive turbo fan type with statically and dynamically
balanced impeller with high and low fan speeds available.
The fan motor shall operate on 208/230 volts, 1 phase, 60 hertz with a
motor output range from 0.06 to 0.12 HP.
The airflow rate shall be available in high and low settings.
The fan motor shall be thermally protected.
Filter:
1.
G.
The cabinet shall be constructed with sound absorbing foamed
polystyrene and polyethylene insulation.
Optional high efficiency air filters are available for each model unit.
The unit shall have controls provided by Daikin to perform input functions
necessary to operate the system.
The unit shall be compatible with interfacing with connection to
LonWorks networks or interfacing with connection to BMS system.
Consult with Daikin prior to applying controls.
Accessories Available:
1.
2.
Fresh air intake and supply air duct connections.
Remote “in-room” sensor kit (KRCS01-1A).
i. The Daikin wall mounted, hard wired remote sensor kit is
recommended for ceiling-embedded type fan coils, which often result
VRV INDOOR UNITS
1230
15782 - 3
in a difference between set temperature and actual temperature. The
sensor for detecting the temperature can be placed away from the
indoor unit (branch wiring is included in the kit).
2.3
FXZQ – 4 WAY CEILING CASSETTE UNIT (2’x2’)
A.
General: The Daikin indoor unit model FXZQ shall be a ceiling cassette fan coil unit,
operable with R-410A refrigerant, equipped with an electronic expansion valve, for
installation into the ceiling cavity equipped with an air panel grill. It shall be available
from 7,500 Btu/h to 18,000 Btu/h. Model numbers are FXZQ07M7VJU, FXZQ09M7VJU,
FXZQ12M7VJU, FXZQ18M7VJU to be connected to outdoor unit model RXYQ / RXYMQ
heat pump and REYQ / RWEYQ heat recovery model. It shall be a four-way air
distribution type, ivory white, impact resistant, and washable decoration panel. The
supply air is distributed via motorized louvers which can be horizontally and vertically
adjusted from 0° to 90°. Computerized PID control shall be used to control superheat to
deliver a comfortable room temperature condition. Equipped with a programmed drying
mechanism that dehumidifies while inhibiting changes in room temperature when used
with Daikin remote control BRC1D71 and BRC2A71. The indoor units sound pressure
shall range from 25 dB(A) to 33 dB(A) at low speed measured at 5 feet below the unit.
B.
Performance: Each unit’s performance is based on nominal operating conditions:
Model Number
FXZQ07M7VJU
FXZQ09M7VJU
FXZQ12M7VJU
FXZQ18M7VJU
C.
Cooling
(Indoor 80°F DB / 67°F WB,
Outdoor 95°F DB, 25 ft pipe
length)
7,500
9,500
12,000
18,000
Heating
(Indoor 47°F DB / 43°F WB,
Outdoor 70°F DB, 25 ft pipe
length)
8,700
11,100
14,000
21,000
Indoor Unit:
1.
2.
3.
4.
5.
6.
7.
8.
9.
The Daikin indoor unit FXFQ shall be completely factory assembled and
tested. Included in the unit is factory wiring, piping, electronic
proportional expansion valve, control circuit board, fan motor thermal
protector, flare connections, condensate drain pan, condensate drain
pump, self-diagnostics, auto-restart function, 3-minute fused time delay,
and test run switch.
Indoor unit and refrigerant pipes will be charged with dehydrated air prior
to shipment from the factory.
Both refrigerant lines shall be insulated from the outdoor unit.
The 8-way supply air flow can be field modified to allow for up to 23
different airflow patterns.
Return air shall be through the concentric panel, which includes a resin
net mold resistant filter.
The indoor units shall be equipped with a condensate pan and
condensate pump. The condensate pump provides up to 33.5” of lift.
The indoor units shall be equipped with a return air thermistor.
The indoor unit will be separately powered with 208~230V/1phase/60Hz.
The voltage range will be 253 volts maximum and 187 volts minimum.
VRV INDOOR UNITS
1230
15782 - 4
D.
Unit Cabinet:
1.
2.
3.
4.
5.
6.
7.
E.
Fan:
1.
2.
3.
4.
F.
2.
3.
4.
5.
6.
7.
Coils shall be of the direct expansion type constructed from copper tubes
expanded into aluminum fins to form a mechanical bond.
The coil shall be of a waffle louver fin and high heat exchange, rifled bore
tube design to ensure highly efficient performance.
The coil shall be a 2-row cross fin copper evaporator coil with 17 FPI
design completely factory tested.
The refrigerant connections shall be flare connections and the
condensate will be 1 -1/4 inch outside diameter PVC.
A condensate pan shall be located under the coil.
A condensate pump with a 33.5 inch lift shall be located below the coil in
the condensate pan with a built in safety alarm.
A thermistor will be located on the liquid and gas line.
Electrical:
1.
2.
3.
I.
The return air shall be filtered by means of a washable long-life filter with
mildew proof resin.
Coil:
1.
H.
The fan shall be direct-drive turbo fan type with statically and dynamically
balanced impeller with high and low fan speeds available.
The fan motor shall operate on 208/230 volts, 1 phase, 60 hertz with a
motor output range from 0.06 to 0.12 HP.
The airflow rate shall be available in high and low settings.
The fan motor shall be thermally protected.
Filter:
1.
G.
The cabinet shall be space saving and shall be located into the ceiling.
Three auto-swing positions shall be available to choose, which include
standard, draft prevention and ceiling stain prevention.
The airflow of the unit shall have the ability to shut down up to 4 of the 8
discharge outlets allowing for simpler corner installation and up to 23
possible airflow patterns.
Fresh air intake shall be possible by way of Daikin’s optional fresh air
intake kit.
A branch duct knockout shall exist for branch ducting supply air.
The cabinet shall be constructed with sound absorbing foamed
polystyrene and polyethylene insulation.
Optional high efficiency air filters are available for each model unit.
A separate power supply will be required of 208/230 volts, 1 phase, 60
hertz. The acceptable voltage range shall be 187 to 253 volts.
Transmission (control) wiring between the indoor and outdoor unit shall
be a maximum of 3,280 feet (total 6,560 feet).
Transmission (control) wiring between the indoor and remote controller
shall be a maximum distance of 1,640 feet.
Control:
VRV INDOOR UNITS
1230
15782 - 5
1.
2.
J.
Accessories Available:
1.
2.
2.4
A.
The unit shall have controls provided by Daikin to perform input functions
necessary to operate the system.
The unit shall be compatible with interfacing with connection to BACnet
networks or interfacing with connection to BMS system. Consult with
Daikin prior to applying controls.
Fresh air intake and supply air duct connections.
Digital Wall Thermostat Control: Remote hard wired digital display
controller: Daikin hard wired digital Individual Zone Controller Model
BRC1E71. The wired remote controller shall be able to control 1 group
(maximum of 16 fan coil units) and shall be able to function as follows:
a.
Each thermostat shall have a BACKLIGHT Liquid Crystal
Display (LCD).
b.
The controller shall have a display of actual room
temperature and room setpoint.
c.
Night Setback range shall be from 40-95F
d.
The controller shall allow for an independent heating
setpoint and independent cooling setpoint.
e.
The controller shall allow for and adjustable offset from
heating to cooling changeover in 1F increments. The
controller shall be capable of switching system from heat
to cool 1F (adjustable) above space setpoint and shall
be capable of switching from cool to heat 1F (adjustable)
below space setpoint. Possible space control swing
shall be controlled within 2F (adjustable).
f.
The controller shall be selectable to prohibit partial or
total function of individual buttons on the controller.
g.
The controller shall have 2 days of battery backup of all
settings during a power loss
h.
The controller shall have a self diagnosis function that
constantly monitors the system for malfunctions (total of
80 components).
i.
The controller shall be able to immediately display fault
location and condition.
j.
The controller shall be equipped with a thermostat
sensor in the remote controller making possible more
comfortable room temperature control.
FXAQ – WALL MOUNTED UNIT
General: Daikin indoor unit FXAQ shall be a wall mounted fan coil unit, operable with
refrigerant R-410A, equipped with an electronic expansion valve, for installation onto a
wall within a conditioned space. This compact design with finished white casing shall be
available from 7,500 Btu/h to 24,000 Btu/h capacities. Model numbers are
FXAQ07MVJU, FXAQ09MVJU, FXAQ12MVJU, FXAQ18MVJU and FXAQ24MVJU to be
connected to outdoor unit model RXYQ / RXYMQ heat pump and REYQ / RWEYQ heat
recovery model. Computerized PID control shall be used to control superheat to deliver a
comfortable room temperature condition. The unit shall be equipped with a programmed
drying mechanism that dehumidifies while inhibiting changes in room temperature when
used with Daikin remote control BRC1D71 and BRC2A71. A mildew-proof, polystyrene
air filter and condensate drain pan shall be included as standard equipment. The indoor
units sound pressure shall range from 32 dB(A) to 35 dB(A) at low speed measured at
3.3 feet below and from the unit.
VRV INDOOR UNITS
1230
15782 - 6
B.
Performance: Each unit’s performance is based on nominal operating conditions:
Model Number
FXAQ07MVJU
FXAQ09MVJU
FXAQ12MVJU
FXAQ18MVJU
FXAQ24MVJU
C.
2.
3.
4.
5.
6.
7.
8.
The Daikin indoor unit FXAQ shall be completely factory assembled and
tested. Included in the unit is factory wiring, piping, electronic
proportional expansion valve, control circuit board, fan motor thermal
protector, flare connections, condensate drain pan, self-diagnostics,
auto-restart function, 3-minute fused time delay, and test run switch. The
unit shall have an auto-swing louver which ensures efficient air
distribution, which closes automatically when the unit stops. The remote
controller shall be able to set five (5) steps of discharge angle. The front
grille shall be easily removed for washing. The discharge angle shall
automatically set at the same angle as the previous operation upon
restart. The drain pipe can be fitted to from either left or right sides.
Indoor unit and refrigerant pipes will be charged with dehydrated air prior
to shipment from the factory.
Both refrigerant lines shall be insulated from the outdoor unit.
Return air shall be through a resin net mold resistant filter.
The indoor units shall be equipped with a condensate pan.
The indoor units shall be equipped with a return air thermistor.
The indoor unit will be separately powered with 208~230V/1phase/60Hz.
The voltage range will be 253 volts maximum and 187 volts minimum.
Unit Cabinet:
1.
2.
E.
Heating
(Indoor 47°F DB / 43°F WB,
Outdoor 70°F DB, 25 ft pipe
length)
8,500
10,500
13,500
20,000
27,000
Indoor Unit:
1.
D.
Cooling
(Indoor 80°F DB / 67°F WB,
Outdoor 95°F DB, 25 ft pipe
length)
7,500
9,500
12,000
18,000
24,000
The cabinet shall be affixed to a factory supplied wall mounting template
and located in the conditioned space.
The cabinet shall be constructed with sound absorbing foamed
polystyrene and polyethylene insulation.
Fan:
1.
2.
3.
4.
The fan shall be a direct-drive cross-flow fan, statically and dynamically
balanced impeller with high and low fan speeds available.
The fan motor shall operate on 208/230 volts, 1 phase, 60 hertz with a
motor output range 0.054 to 0.058 HP.
The airflow rate shall be available in high and low settings.
The fan motor shall be thermally protected.
VRV INDOOR UNITS
1230
15782 - 7
F.
Coil:
1.
2.
3.
4.
5.
6.
G.
Electrical:
1.
2.
3.
H.
2.
The unit shall have controls provided by Daikin to perform input functions
necessary to operate the system.
The unit shall be compatible with interfacing with connection to
LonWorks networks or interfacing with connection to BMS system.
Consult with Daikin prior to applying controls.
Accessories Available:
1.
2.
2.5
A separate power supply will be required of 208/230 volts, 1 phase, 60
hertz. The acceptable voltage range shall be 187 to 253 volts.
Transmission (control) wiring between the indoor and outdoor unit shall
be a maximum of 3,280 feet (total 6,560 feet).
Transmission (control) wiring between the indoor and remote controller
shall be a maximum distance of 1,640 feet.
Control:
1.
I.
Coils shall be of the direct expansion type constructed from copper tubes
expanded into aluminum fins to form a mechanical bond.
The coil shall be of a waffle louver fin and high heat exchange, rifled bore
tube design to ensure highly efficient performance.
The coil shall be a 2-row cross fin copper evaporator coil with 14 fpi
design completely factory tested.
The refrigerant connections shall be flare connections and the
condensate will be 11/16 inch outside diameter PVC.
A thermistor will be located on the liquid and gas line.
A condensate pan shall be located in the unit.
Remote “in-room” sensor kit KRCS01-1A.
A condensate pump.
ALTERNATE EQUIPMENT BIDS (ALTERNATE ON THE BID FORM)
A.
The alternate equipment supplier shall provide to the bidding mechanical contractor a
complete equipment data package. This package shall include, but is not limited to,
equipment capacities at the design condition, power requirements, indoor units
CFM/static pressures, fan curves, installation requirements, and physical dimensions.
Nominal performance data is not acceptable.
B.
The mechanical contractor shall request and receive the equipment data package 10
days prior to bid date and submit this package with the alternate bid.
C.
The mechanical contractor shall list the equipment supplier and submit the required data
package with the bid detailing a complete comparison of the proposed alternate
equipment to the specified equipment and the associated cost reduction of the alternate
equipment. The contractor bids an alternate manufacturer with full knowledge that that
manufactures product may not be acceptable or approved.
D.
The alternate equipment supplier shall furnish a complete drawing package to the
mechanical contractor 10 days prior to bid day for bidding and installation. The drawing
format shall be .dxf or equivalent, on 24"x36" sheets. The HVAC and electrical series
VRV INDOOR UNITS
1230
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design documents will be made available in electronic format for use by the equipment
supplier in preparing their drawings. The alternate equipment supplier shall prepare the
following drawings:
XXX
XXX
XXX
XXX
XXX
HVAC Floor Plan
HVAC Refrigerant Piping Plan
HVAC Refrigerant Piping/Controls Details
HVAC Details
HVAC Schedules
E.
The alternate equipment supplier shall draft all piping circuits, components, overall
building control schematic, detailed control wiring diagrams, system details and
schedules for their system. The drawings shall convey all requirements to successfully
install the alternate equipment suppliers system.
F.
Provide (2) drawing package sets. Provide (1) drawing package in electronic format (.dxf
or .dwg files) on CD.
G.
The submitted documents shall be complete system designs and show no less
information than the HVAC equipment/controls contract bid documents.
H.
The equipment supplier shall submit as part of the equipment data package outdoor unit
data sheets. Data sheets to include the following:
Capacities: Cooling
Cooling (Btu/h)
Cooling Input Power
(kW)
Capacities: Heating
Heating (Btu/h)
Heating Input Power
(kW)
Operating Temperature Range:
Cooling
Heating
Power Supply:
Maximum Circuit Amps (MCA)
Maximum Fuse Amps (MFA)
Maximum Starting Current (MSC)
Total Over Current Amps (TOCA)
Outdoor Fan Motor
Refrigerant:
Refrigerant Type/Charge
Control
Unit Data:
Max. Number of Indoor Units
Sound Pressure Level at 3ft. (dBA)
Weight (lbs)
VRV INDOOR UNITS
1230
15782 - 9
Dimensions
I.
The equipment supplier shall guarantee the performance of their system and all
published data submitted. Performance shall be based on the design criteria below.
Room Temperature (Cooling): _________________________________
Room Temperature (Heating): _________________________________
Ambient Temperature (Summer): _______________________________
Ambient Temperature (Winter): ________________________________
J.
The alternate equipment supplier shall submit with bid, indoor unit data sheets. Data
sheets to include the following:
Capacities:
Cooling (Btu/h)
Heating (Btu/h)
Air Flow (CFM)
External Static Pressure (ESP)
Electrical Data (MCA, MFA, FLA)
Weight (lbs)
Dimensions
PART 3 - EXECUTION
3.1
INSTALLATION REQUIREMENTS
A. The system must be installed by a Daikin factory trained contractor/dealer. The bidders
shall be required to submit training certification proof with bid documents. The mechanical
contractor’s installation price shall be based on the systems installation requirements. The
mechanical contractor bids with complete knowledge of the HVAC system requirements.
Untrained contractors who wish to bid this project may contact Thermal Mechanics, Inc. to
arrange training prior to bid day.
B. The Mechanical Contractor shall furnish and install all controls and related wiring. This
includes wall mounted controllers, wall mounted remote sensors (where applicable) and the
2-18 stranded unshielded pair control cabling. This cabling does not need to be in conduit
except where exposed. Room controllers and remote sensors shall be located on interior
wall near door. Mount controllers for corridor units near double doors near each unit
location.
C. The Electrical Contractor shall be responsible for the complete installation of all power
wiring as specified under the applicable Division 16 sections.
END OF SECTION 15782
VRV INDOOR UNITS
1230
15782 - 10
SECTION 15783 - VRV OUTDOOR UNITS
PART 1 – GENERAL
1.1
SYSTEM DESCRIPTION
A.
The variable capacity, heat recovery air conditioning system shall be a Daikin
Variable Refrigerant Volume Series (heat and cool model) split system as
specified. The system shall consist of multiple evaporators, branch selector
boxes, REFNET™ joints and headers, a three pipe refrigeration distribution
system using PID control, and Daikin VRV® outdoor unit. The outdoor unit is a
direct expansion (DX), air-cooled heat recovery, multi-zone air-conditioning
system with variable speed driven compressors using R-410A refrigerant. The
outdoor unit may connect an indoor evaporator capacity up to 200% of the
outdoor condensing unit capacity. All zones are each capable of operating
separately with individual temperature control. Two-pipe systems requiring
separation of the gas and liquid refrigerant are not acceptable due to loss in
heating capacity.
B.
The Daikin outdoor unit shall be interconnected to indoor unit models FXFQ,
FXHQ, FXSQ, FXMQ, FXLQ, FXNQ, FXOQ, FXDQ, FXZQ and FXAQ and shall
range in capacity from 7,500 Btu/h to 96,000 Btu/h in accordance with Daikin’s
engineering data book detailing each available indoor unit. The indoor units shall
™
be connected to the outdoor utilizing Daikin’s REFNET specified piping joints
and headers.
C.
Operation of the system shall permit either individual cooling or heating of each
fan coil simultaneously or all of the fan coil units associated with one branch
cool/heat selector box (BSVQ). Each fan coil or group of fan coils shall be able
to provide set temperature independently via a local remote controller, an
Intelligent Controller, an Intelligent Manager or a BMS interface.
D.
Branch selector (BS) boxes shall be located as shown on the drawing. The
branch selector boxes shall have the capacity to control up to 96 MBH (cooling)
downstream of the BS box. The BS box shall consist of five electronic expansion
valves, refrigerant control piping and electronics to facilitate communications
between the BS box and main processor and between the BS box and fan coils.
The BS box shall control the operational mode of the subordinate fan coils. The
use of five EEV’s ensures continuous heating during defrost, no heating impact
during changeover and reduced sound levels. Use of multi-port branch selector
boxes shall not be acceptable.
E.
The REYQ outdoor unit model numbers and the associated number of
connectable indoor units per REYQ outdoor unit is indicated in the following
table. All outdoor units must have a minimum of 2 compressors. Single
compressor outdoor units will not be allowed as two compressors are
required redundancy / backup. In the event of compressor failure the
remaining compressors shall continue to operate and provide heating or
cooling as required at a proportionally reduced capacity. Each indoor unit or
group of indoor units shall be independently controlled.
VRV OUTDOOR UNITS
1230
15783 - 1
Model Number
Number of Connectable Indoor
Units
12
16
20
25
29
33
37
41
REYQ72
REYQ96
REYQ120
REYQ144
REYQ168
REYQ192
REYQ216
REYQ240
1.2
QUALITY ASSURANCE
A.
The units shall be listed by Electrical Laboratories (ETL) and bear the cETL label.
B.
All wiring shall be in accordance with the National Electric Code (NEC).
C.
The system will be produced in an ISO 9001 and ISO 14001 facility, which are
standards set by the International Standard Organization (ISO). The system
shall be factory tested for safety and function.
D.
The outdoor unit will be factory charged with R-410A.
1.3
A.
1.4
A.
DELIVERY, STORAGE AND HANDLING
Unit shall be stored
recommendations.
and
handled
according
to
the
manufacturer’s
WARRANTY
The units shall have a manufacturer’s warranty for a period of one (1) year from
date of installation. The units shall have a limited labor warranty for a period of
one (1) year from date of installation. The compressors shall have a warranty of
six (6) years from date of installation. During the stated period, should any part
fail due to defects in material and workmanship, it shall be repaired or replaced at
the discretion of Daikin AC (Americas), Inc. according to Daikin’s terms and
conditions. All warranty service work shall be preformed by a Daikin factory
trained service professional.
PART 2 – PRODUCTS
2.1
OUTDOOR UNIT
A.
DESIGN BASIS: The HVAC equipment basis of design is Daikin AC. All other
manufacturer’s equipment shall bid as a voluntary deduct alternate. In any
event, the contractor shall be responsible for all specified items and intents of this
document without further compensation.
B.
General: The outdoor unit is designed specifically for use with VRV III series
components.
VRV OUTDOOR UNITS
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15783 - 2
1. The outdoor unit shall be factory assembled and pre-wired with all necessary
electronic and refrigerant controls. The refrigeration circuit of the condensing
unit shall consist of Daikin scroll compressors, motors, fans, condenser coil,
electronic expansion valves, solenoid valves, 4-way valve, distribution
headers, capillaries, filters, shut off valves, oil separators, service ports and
refrigerant regulator. All outdoor units must have a minimum of 2
compressors. Single compressor outdoor units will not be allowed as two
compressors are required redundancy / backup. In the event of compressor
failure the remaining compressors shall continue to operate and provide
heating or cooling as required at a proportionally reduced capacity. High/low
pressure gas line, liquid and suction lines must be individually insulated
between the outdoor and indoor units.
2. The outdoor unit can be wired and piped with outdoor unit access from the
left, right, rear or bottom.
3. The connection ratio of indoor units to outdoor unit shall be permitted up to
200%.
4. Each outdoor system shall be able to support the connection of up to 41
indoor units dependant on the model of the outdoor unit.
5. The sound pressure level standard shall be that value as listed in the Daikin
engineering manual for the specified models at 3 feet from the front of the
unit. The outdoor unit shall be capable of operating automatically at further
reduced noise during night time.
6. The system will automatically restart operation after a power failure and will
not cause any settings to be lost, thus eliminating the need for
reprogramming.
7. The unit shall incorporate an auto-charging feature and a refrigerant charge
check function.
8. The outdoor unit shall be modular in design and should allow for side-by-side
installation with minimum spacing.
9. The following safety devices shall be included on the condensing unit; high
pressure switch, control circuit fuses, crankcase heaters, fusible plug, high
pressure switch, overload relay, inverter overload protector, thermal
protectors for compressor and fan motors, over current protection for the
inverter and anti-recycling timers.
10. To ensure the liquid refrigerant does not flash when supplying to the various
fan coil units, the circuit shall be provided with a sub-cooling feature.
11. Oil recovery cycle shall be automatic occurring 2 hours after start of
operation and then every 8 hours of operation.
12. The outdoor unit shall be capable of heating operation at 0°F dry bulb
ambient temperature without additional low ambient controls.
13. The system shall continue to provide heat to the indoor units in heating
operation while in the defrost mode.
C.
Unit Cabinet:
1. The outdoor unit shall be completely weatherproof and corrosion resistant.
The unit shall be constructed from rust-proofed mild steel panels coated with
a baked enamel finish.
D.
Fan:
1. The condensing unit shall consist of two or more propeller type, direct-drive
350 and 750 W fan motors that have multiple speed operation via a DC
(digitally commutating) inverter. All outdoor units must have a minimum
of 2 fans. Single fan outdoor units will not be allowed as two fans are
required redundancy / backup.
VRV OUTDOOR UNITS
1230
15783 - 3
Model Number
REYQ72
REYQ96
REYQ120
REYQ144
REYQ168
REYQ192
REYQ216
REYQ240
Fan Motor Output (W) & Quantity
350 x 2
350 x 2
350 x 2
750 x 2
750 x 2
750 x 2
750 x 2
750 x 2
2. The condensing unit fan motor shall have multiple speed operation of
the DC (digitally commutating) inverter type, and be of high external
static pressure and shall be factory set as standard at 0.12 in. WG. A
field setting switch to a maximum 0.32 in. WG pressure is available to
accommodate field applied duct for indoor mounting of condensing
units.
3. The fan shall be a vertical discharge configuration with a nominal airflow
maximum range of 6,700 CFM to 14,120 CFM dependant on model
specified.
4. Nominal sound pressure levels shall be as shown below.
Model Number
REYQ72
REYQ96
REYQ120
REYQ144
REYQ168
REYQ192
REYQ216
REYQ240
Sound Pressure Level dB(A)
58
58
60
61
61
62
62
63
5. The fan motor shall have inherent protection and permanently lubricated
bearings and be mounted.
6. The fan motor shall be provided with a fan guard to prevent contact with
moving parts.
7. Night setback control of the fan motor for low noise operation by way of
automatically limiting the maximum speed shall be a standard feature.
Operation sound level shall be selectable from 3 steps as shown below.
Operation Sound (dB)
Night Mode
Sound Pressure Level (dB)
55
50
45
Step 1 max.
Step 2 max.
Step 3 max.
E.
Condenser Coil:
1. The condenser coil shall be manufactured from copper tubes expanded into
aluminum fins to form a mechanical bond.
2. The heat exchanger coil shall be of a waffle louver fin and rifled bore tube
design to ensure high efficiency performance.
3. The heat exchanger on the condensing units shall be manufactured from HiX seamless copper tube with N-shape internal grooves mechanically bonded
on to aluminum fins to an e-Pass Design.
4. The fins are to be covered with an anti- corrosion acrylic resin and
hydrophilic film type E1.
VRV OUTDOOR UNITS
1230
15783 - 4
5. The pipe plates shall be treated with powdered polyester resin for corrosion
prevention. The thickness of the coating must be between 2.0 to 3.0
microns.
F.
Compressor:
1. The Daikin inverter scroll compressors shall be variable speed (PAM
inverter) controlled which is capable of changing the speed to follow the
variations in total cooling and heating load as determined by the suction gas
pressure as measured in the condensing unit. In addition, samplings of
evaporator and condenser temperatures shall be made so that the high/low
pressures detected are read every 20 seconds and calculated. With each
reading, the compressor capacity (INV frequency or STD ON/OFF) shall be
controlled to eliminate deviation from target value.
2. The inverter driven compressor in each condensing unit shall be of highly
efficient reluctance DC (digitally commutating), hermetically sealed scroll “Gtype” with a maximum speed of 7,980 rpm.
3. Neodymium magnets shall be adopted in the rotor construction to yield a
higher torque and efficiency in the compressor instead of the normal ferrite
magnet type. At complete stop of the compressor, the neodymium magnets
will position the rotor into the optimum position for a low torque start.
4. The capacity control range shall be as low as 6% to 100%.
5. Each non-inverter compressor shall also be of the hermetically sealed scroll
type.
6. Each compressor shall be equipped with a crankcase heater, high pressure
safety switch, and internal thermal overload protector.
7. Oil separators shall be standard with the equipment together with an
intelligent oil management system.
8. The compressor shall be spring mounted to avoid the transmission of
vibration.
9. Units sized 8-12 ton shall contain a minimum of 2 compressors, 14-16
ton units shall contain a minimum of 3 compressors and 18-20 ton shall
contain a minimum of 4 compressors. In the event of compressor failure
the remaining compressors shall continue to operate and provide heating or
cooling as required at a proportionally reduced capacity. The microprocessor
and associated controls shall be designed to specifically address this
condition.
Tonnage
6
8
10
12
14
16
18
20
Number of
Compressors
2
2
2
2
3
3
4
4
Compressor Types
1 inverter + 1 fixed
1 inverter + 1 fixed
1 inverter + 1 fixed
(1 inverter) x 2
(1 inverter + 1 fixed) + 1 inverter
(1 inverter + 1 fixed) + 1 inverter
(1 inverter + 1 fixed) x 2
(1 inverter + 1 fixed) x 2
10. In the case of multiple condenser modules, conjoined operation hours of the
compressors shall be balanced by means of the Duty Cycling Function,
ensuring sequential starting of each module at each start/stop cycle,
completion of oil return, completion of defrost or every 8 hours.
VRV OUTDOOR UNITS
1230
15783 - 5
G.
Electrical:
1. The power supply to the outdoor unit shall be 208-230 volts, 3 phase, 60
hertz +/- 10%.
Power Supply Voltage
208-230/3/60
Model MCA MFA REYQ72 36.1 40 REYQ96 43.8 45 REYQ120 44.2 50 REYQ144 72.2 80 REYQ168 64.9 50+40 REYQ192 70.1 60+40 REYQ216 77.4 60+50 REYQ240 82.6 60+60 2. The control voltage between the indoor and outdoor unit shall be 16VDC
non-shielded, stranded 2 conductor cable.
3. The control wiring shall be a two-wire multiplex transmission system, making
it possible to connect multiple indoor units to one outdoor unit with one 2cable wire, thus simplifying the wiring operation.
4. The control wiring lengths shall be as shown below.
Control Wiring
Length
Wire Type
2.2
Outdoor to Indoor
Unit
Outdoor to
Central
Controller
Indoor Unit to
Remote Control
6,665 ft
3,330 ft
1,665 ft
16 AWG, 2 wire, non-polarity, non-shielded, stranded
VRV III REQUIRED FEATURES
A.
Voltage Platform – Heat pump and heat recovery condensing units shall be
available with a 208-230V/3/60 power supply.
B.
Advanced Zoning – A single system shall provide for up to 41 zones.
C.
Auto charging – Each system shall have a refrigerant auto-charging function.
D.
Charge Checking – Each system shall have a refrigerant charge checking
function.
E.
Defrost Heating – Each system shall maintain continuous heating during defrost
operation.
F.
Independent Control – Each fan coil shall use a dedicated electronic expansion
valve for independent control.
VRV OUTDOOR UNITS
1230
15783 - 6
G.
VFD Inverter Control – Each condensing unit shall use a high efficiency, variable
speed “inverter” compressor coupled with inverter fan motors for superior part
load performance.
Compressor capacity shall be modulated automatically to maintain a constant suction
pressure, while varying the refrigerant volume for the needs of the cooling or heating
loads.
Indoor fan coil units shall use PID control to control superheat to deliver a
comfortable room temperature condition.
H.
Flexible Design –
1. Systems shall be capable of up to 540ft (640ft equivalent) of linear piping
between the condensing unit and furthest located fan coil unit.
2. Systems shall be capable of up to 3,280ft total “one-way” piping in the piping
network.
3. Systems shall have a vertical (height) separation of up to 295ft between the
condensing unit and the fan coil units.
™
4. Systems shall be capable of 295ft from the first REFNET / branch point.
5. The outdoor unit shall connect an indoor evaporator capacity up to 200% of
the outdoor condensing unit capacity.
6. Systems shall be capable of 49ft between fan coil units.
7. Condensing units shall be supported with a fan/fan motor ESP up to 0.32”
WG as standard to allow connection of discharge ductwork and to prevent
discharge air short circuiting.
I.
Simple Wiring – Systems shall use 16 AWG, 2 wire, multi-stranded, non-shielded
and non-polarized daisy chain control wiring.
J.
Energy Efficiency – System shall have equivalent or better performance than
high efficiency air cooled or water cooled chiller systems.
K.
Outside Air – Systems shall provide outside air capability.
L.
Space Saving – Each system shall have a condensing unit module footprint as
small as 3’ 5/8” x 2’ 6-1/8” (7.66sq ft).
M.
Advanced Diagnostics – Systems shall include a self diagnostic, auto-check
function to detect a malfunction and display the type and location.
N.
Advanced Controls – Each system shall have at least one remote controller
capable of controlling up to 16 fan coil units.
Each system shall be capable of integrating with open protocol BACnet and
LONworks building management systems.
O.
Low Sound Levels – Each system shall use indoor and outdoor units with quiet
operation as low as 29 dB(A).
2.3
The VRV III REYQ outdoor unit shall perform as indicated below.
Model Number
REYQ72
REYQ96
REYQ120
REYQ144
REYQ168
VRV OUTDOOR UNITS
Cooling Capacity
(Btu/h)
72,000
96,000
120,000
144,000
168,000
1230
Power Input
(Watts)
5,300
8,400
10,900
13,200
14,000
15783 - 7
REYQ192
REYQ216
REYQ240
192,000
216,000
240,000
16,300
19,500
21,800
Model Number
Heating Capacity
(Btu/h)
81,000
108,000
135,000
162,000
189,000
216,000
243,000
270,000
Power Input
(Watts)
6,050
8,950
11,200
13,400
14,700
17,400
20,100
22,800
REYQ72
REYQ96
REYQ120
REYQ144
REYQ168
REYQ192
REYQ216
REYQ240
Performance Conditions
Cooling: indoor temp. of 80°F DB, 67°F WB and outdoor temp. of 95°F DB.
Heating: indoor temp. of 70°F DB and outdoor temp. of 47°F DB, 43°F WB.
Equivalent piping length: 25ft
2.04
OPERATING RANGE
A.
The operating range in cooling will be 23°F DB ~ 110°F DB.
B.
The operating range in heating will be -4°F DB – 77°F DB / -5°F WB – 60°F WB.
Simultaneous cooling/heating operating range will be 22°F WB ~ 60°F WB.
2.05
A.
2.06
A.
REFRIGERANT PIPING
The system shall be capable of refrigerant piping up to 540 actual feet or 620
equivalent feet from the outdoor unit to the furthest indoor unit, a total combined
liquid line length of 3,280 feet of piping between the condensing and fan coil units
with 295 feet maximum vertical difference, without any oil traps.
BSVQ BRANCH SELECTOR BOX FOR VRV III HEAT RECOVERY SYSTEM
General: The BSVQ36PVJU and BSVQ60PVJU branch selector boxes are
designed specifically for use with VRV III series heat recovery system
components.
1.
2.
3.
4.
These selector boxes shall be factory assembled, wired, and piped.
These BSVQ branch controllers must be run tested at the factory.
These selector boxes must be mounted indoors.
When simultaneously heating and cooling, the units in heating mode shall
energize their sub-cooling solenoid valve.
5. The number of connectable indoor units shall be in accordance with the table
below:
Model Number
B.
BSVQ36
BSVQ60
BSVQ96
Unit Cabinet:
Maximum
Connectable
Cooling Capacity
36,000 Btu/h
60,000 Btu/h
96,000 Btu/h
Maximum Number
of Connectable
Indoor Units
3
5
12
1. These units shall have a galvanized steel plate casing.
VRV OUTDOOR UNITS
1230
15783 - 8
2. Each cabinet shall house multiple refrigeration control valves and a liquid gas
separator.
3. The cabinet shall contain a tube in tube heat exchanger.
4. The unit shall have sound absorption thermal insulation material made of
flame and heat resistant foamed polyethylene.
5. Nominal sound pressure levels shall be as shown below.
Model Number
BSVQ36
BSVQ60
BSVQ96
C.
Sound Level dB(A)
Operating
42
43
43
Sound Level dB(A)
Stopping
32
32
32
Dimensions:
1. Each BSVQ unit shall be no larger than 8-3/16” x 15-5/16” x 12-7/8”.
D.
Refrigerant Valves:
1. The unit shall be furnished with 5 electronic expansion valves to control the
direction of refrigerant flow.
2. The refrigerant connections must be of the braze type.
3. Each circuit shall have at least one (36,000 Btu/h fan coil unit or smaller for
the BSVQ36PVJU and 60,000 Btu/h fan coil unit or smaller for the
BSVQ60PVJU and 96,000 Btu/h fan coil unit or smaller for the
BSVQ96PVJU) branch selector box.
4. Multiple circuits may be connected to a branch selector box with the use of a
™
REFNET joint provided they are within the capacity range of the branch
selector.
E.
Drainage:
1. The unit shall not require any condensate drainage connection.
F.
Electrical:
1. The unit electrical power shall be 208/230 volts, 1 phase, 60 hertz.
2. The unit shall be capable of operation within the limits of 187 volts to 255
volts.
3. The minimum circuit amps (MCA) shall be 0.1 and the maximum fuse amps
(MFA) shall be 15.
4. The control voltage between the indoor and outdoor unit shall be 16VDC
non-shielded 2 conductor cable.
PART 3 – EXECUTION
3.1
INSTALLATION
A.
General: Install outdoor VRV units in accordance with manufacturer’s installation
instructions. Install units plumb and level, firmly anchored in locations indicated,
and maintain manufacturer’s recommended clearances.
B.
Support: Install ground-mounted units on concrete pad per the requirements of
Division 15 Section “Basic Mechanical Materials and Methods.” Coordinate
installation of anchoring devices.
VRV OUTDOOR UNITS
1230
15783 - 9
3.2
A.
3.3
FIELD QUALITY CONTROL
Testing: Charge and test systems in accordance with Daikin factory
recommdations.
START-UP AND TRAINING
A.
Verify that electrical wiring installation complies with manufacturer’s submittal
and installation requirements of Division 16 Sections. Do not proceed with
startup until wiring installation is acceptable to equipment installer.
B.
Start equipment according to manufacturer’s instructions.
C.
D.
Operate and adjust controls and safeties.
Operate equipment, including accessories and controls, to demonstrate
compliance with requirements.
E.
Schedule training with Owner with at least 7 days advance notice.
END OF SECTION 15670
VRV OUTDOOR UNITS
1230
15783 - 10
SECTION 15815 - METAL DUCTS
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 sections contain requirements that relate to this
section:
1. “Basic Mechanical Requirements.”
2. “Basic Mechanical Materials and Methods.”
3. “Duct Accessories” for dampers, sound-control devices, duct-mounted access doors and
panels, turning vanes, and flexible ducts.
4. “Air Outlets and Inlets.”
1.2
A.
1.3
A.
SUMMARY
This Section includes rectangular, round, and flat-oval metal ducts and plenums for heating,
ventilating, and air-conditioning systems in pressure classes from minus 2- to plus 10-inch wg.
DEFINITIONS
Sealing Requirements Definitions: For the purposes of duct systems sealing requirements
specified in this Section, the following definitions apply:
1. Seams: A seam is defined as joining of two longitudinally (in the direction of airflow) oriented
edges of duct surface material occurring between two joints. All other duct surface
connections made on the perimeter are deemed to be joints.
2. Joints: Joints include girth joints; branch and subbranch intersections; so-called duct collar
tap-ins; fitting subsections; louver and air terminal connections to ducts; access door and
access panel frames and jambs; duct, plenum, and casing abutments to building structures.
1.4
A.
1.5
SYSTEM DESCRIPTION
The duct system design, as indicated, has been used to select and size air-moving and distribution equipment and other components of air system. Changes to layout or configuration
of duct system must be specifically approved in writing by Architect. Accompany requests for
layout modifications with calculations showing that proposed layout will provide original design
results without increasing system total pressure.
SUBMITTALS
A.
General: Submit the following in accordance with the Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product data including details of construction relative to materials, dimensions of individual
components, profiles, and finishes for the following items:
1. Duct Insulation.
METAL DUCTS
1230
15815 - 1
2. Sealing Materials.
3. Fire-Stopping Materials.
4. Round and Oval Spiral Duct Fittings
C.
Welding Certificates including welding procedures specifications, welding
qualifications test records, and welders’ qualifications test records complying.
D.
Field Test Reports:
requirements.
E.
Record Drawings: Indicate actual routing, fitting details, reinforcement, support, and installed
accessories and devices.
F.
Maintenance data for volume control devices, fire dampers and smoke dampers, in accordance
with Division 15 Section “Basic Mechanical Requirements.”
1.6
A.
procedures
Indicate and interpret test results for compliance with performance
QUALITY ASSURANCE
NFPA Compliance: Comply with the following NFPA Standards:
1. NFPA 90A, "Standard for the Installation of Air Conditioning and Ventilating Systems," except
as indicated otherwise.
PART 2- PRODUCTS
2.1
G.
MANUFACTURERS
Subject to compliance with requirements, provide products by one of the following:
1. One-Part Fire Stopping Sealants:
a. STI (Specified Technologies, Inc.)
b. 3M Fire Protection Products
c. IPC (International Protective Coatings Corp.)
2. Spiral Duct and Fittings:
a.
b.
c.
d.
Norlock Metal Products Co.
Semco Mfg. Inc.
United Sheet Metal
Wesco
3. Ductwork Connection Systems (Contractor’s option):
a. Ductmate Industries, Inc.
2.2
SHEET METAL MATERIALS
A.
Sheet Metal, General: Provide sheet metal in gauges as called for in the latest edition of
SMACNA, "HVAC Duct Construction Standards."
B.
Galvanized Sheet Metal: Lock-forming quality, ASTM A-527, Coating Designation G 90. Provide
mill phosphatized finish for exposed surfaces of ducts exposed to view.
METAL DUCTS
1230
15815 - 2
C.
Refer to Part 2 Section “Rectangular Duct Fabrication” for reinforcement of ductwork constructed
under this section.
D.
Provide materials which are free of visual imperfections such as pitting, seam marks, roller
marks,
stains and discolorations.
2.3
DUCT INSULATION
A.
General: Comply with NFPA 90A and TIMA Standard AHC-101.
B.
Materials: ASTM listed glass fiber duct wrap with FSK foil jacket.
1.
2.
3.
4.
2.4
Thickness: 1-1/2 inch.
Density: 0.75 pounds.
Thermal Conductivity (k-Value): 0.29 or better, at 75 deg F mean temperature.
Fire-Hazard Classification: Maximum flame-spread rating of not more than 25 and smokedeveloped rating of no higher than 50, when tested according to ASTM C 411.
SEALANT MATERIALS
A.
Joint and Seam Sealants, General: The term "sealant" is not limited to materials of adhesive or
mastic nature but includes tapes and combinations of open-weave fabric strips and mastics.
B.
Tape Sealing System: Woven-fiber tape impregnated with a gypsum mineral compound and a
modified acrylic/silicone activator to react exothermically with tape to form a hard, durable, airtight
seal.
C.
Joint and Seam Sealant: One-part, nonsag, solvent-release-curing, polymerized butyl sealant
FSTT-S-001657, Type I; formulated with a minimum of 75 percent solids.
D.
Flanged Joint Mastics: One-part, acid-curing, silicone, elastomeric joint sealants, complying with
ASTM C 920, Type S, Grade NS, Class 25, Use O.
2.5
FIRE-STOPPING
A.
Fire-Resistant Sealant:
Provide two-part, foamed-in-place, fire-stopping silicone sealant
formulated for use in a through-penetration fire-stop system for filling openings around duct
penetrations through walls and floors, having fire-resistance ratings indicated as established by
testing identical assemblies per ASTM E 814 by Underwriters Laboratory, Inc. or other testing
and inspecting agency acceptable to authorities having jurisdiction.
B.
Fire-Resistant Sealant:
Provide one-part elastomeric sealant formulated for use in a
through-penetration fire-stop system for filling openings around duct penetrations through walls
and floors, having fire-resistance ratings indicated as established by testing identical assemblies
per ASTM E 814 by Underwriters Laboratory, Inc. or other testing and inspecting agency
acceptable to authorities having jurisdiction.
2.6
A.
HANGERS AND SUPPORTS
Hanger Materials: Galvanized, sheet steel or round, threaded steel rod.
1. Hangers Installed in Corrosive Atmospheres: Electrogalvanized, all-thread rod or hot dipped
METAL DUCTS
1230
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galvanized rods with threads painted after installation.
2. Straps and Rod Sizes: Comply with Table 4-1 in SMACNA HVAC Duct Construction
Standards, 1985 Edition for sheet steel width and gauge and for steel rod diameters.
B.
Duct Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible
with duct materials.
C.
Trapeze and Riser Supports: Steel shapes complying with ASTM A 36.
1. Supports for Galvanized-Steel Ducts: Galvanized steel shapes and plates.
2.7
RECTANGULAR DUCT FABRICATION
A.
General: Except as otherwise indicated, fabricate rectangular ducts with galvanized sheet steel,
in accordance with the 1985 Edition, 12th printing 1994 of "HVAC Duct Construction Standards"
as published by SMACNA, Tables 1-3 through 1-18 and all related details. Reinforcement of duct
systems through the use of metal shapes, tie rods, cross breaking or beading, etc., shall be done
in accordance with applicable SMACNA standard details.
1. Lengths: Fabricate rectangular ducts in lengths appropriate to reinforcement and rigidity
class required for pressure classification.
2. Fabricate retactangular ducts such that drawing dimensions reflect clear inside dimensions of
duct with or without internal liner.
B.
Static-Pressure Classifications: Unless otherwise indicated, construct ducts to the following:
1. Supply Ducts: 2-inch water gage.
2. Return Ducts: 2-inch water gage, negative pressure.
3. Exhaust Ducts: 2-inch water gage, negative pressure.
C.
2.8
Cross Breaking or Cross Beading: Cross break or cross bead duct sides 19 inches and larger
and 20 gage or less, with more than 10 sq. ft. of unbraced panel area, as indicated in SMACNA
“HVAC Duct Construction Standard,” unless ducts are lined or are externally insulated.
RECTANGULAR DUCT FITTINGS
A.
2.9
Fabricate elbows, transitions, offsets, branch connections, and other duct construction in
accordance with SMACNA "HVAC Metal Duct Construction Standard," 1985 Edition, Figures 2-1
through 2-10.
ROUND DUCT FABRICATION
A.
Round Ducts: Fabricate supply ducts with spiral lockseam type construction of galvanized steel
sheets. Round duct gauges shall be in accordance with SMACNA Table 3-2.
B.
"Snap-Lock" round duct may be used for branch taps to diffusers for low pressure applications in
sizes 12" and smaller where concealed above ceilings.
2.10
ROUND DUCT FITTING FABRICATION
A.
Fittings shall be of the wall thickness two gauges heavier than shown for spiral seam gauges.
B.
Fittings subject to less than 2" W.G. shall be spot welded and internally sealed air tight.
METAL DUCTS
1230
15815 - 4
C.
Elbows: Provide elbow types for sizes listed below. Fabricate the bend radius 1.5 times the
1. Elbows for use with spiral ductwork:
a. Round Elbows 12 inches and smaller: 2-piece, die-stamped.
2. Elbows for use with snap-lock ductwork:
a. Round Elbows 12 inches and smaller: Adjustable elbows.
PART 3 - EXECUTION
3.1
DUCT INSTALLATION, GENERAL
A.
Duct System Pressure Class: Construct and install each duct system for the specific duct
pressure classification indicated.
B.
Install ducts with fewest possible joints.
C.
Use shop fabricated fittings or premanufactured duct connector systems for all changes in
directions, changes in size and shape, and connections.
D.
Locate ducts, except as otherwise indicated, vertically and horizontally, parallel and
perpendicular to building lines; avoid diagonal runs. Install duct systems in shortest route that
does not obstruct useable space or block access for servicing building and its equipment.
E.
Install ducts close to walls, overhead construction, columns, and other structural and permanent
enclosure elements of building.
F.
Provide clearance of 1 inch where furring is shown for enclosure or concealment of ducts, plus
allowance for insulation thickness, if any.
G.
Coordinate layout with suspended ceiling and lighting layouts and similar finished work.
H.
Electrical Equipment Spaces: Route ductwork to avoid passing through transformer vaults and
electrical equipment spaces and enclosures.
3.2
A.
DUCT INSULATION INSTALLATION
Unless otherwise indicated, provide exterior insulation for the following duct systems:
1. All interior concealed rectangular supply, fresh air and exhaust ductwork.
2. All interior exposed rectangular supply, fresh air and exhaust ductwork.
3. Return air boots and transfer ducts.
B.
3.3
Blanket Insulation: Install tight and smooth. Secure to ducts having long sides or diameters as
follows:
1. Smaller Than 24 Inches: Bonding adhesive applied in 6 inches wide transverse strips on 12
inches centers.
2. 24 Inches and Larger: Anchor pins spaced 12 inches apart each way. Apply bonding
adhesive to prevent sagging of the insulation.
3. Overlap joints 3 inches.
4. Seal joints, breaks, and punctures with vapor barrier compound.
SEAM AND JOINT SEALING
METAL DUCTS
1230
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A.
General: Seal duct seams and joints as follows:
B.
Pressure Classifications Greater Than 3 Inches Water Gage: All transverse joints, longitudinal
seams, and duct penetrations.
C.
Pressure Classification 2 Inches Water Gage: All transverse joints and longitudinal seams.
1. Pressure Classification Less than 2 Inches Water Gage: Transverse joints only.
D.
3.4
Seal externally insulated ducts prior to insulation installation.
HANGING AND SUPPORTING
A.
Install rigid round, and rectangular, duct with support systems indicated in SMACNA's "HVAC
Duct Construction Standards, Tables 4-1 through 4-3 and Figures 4-1 through 4-8.
B.
Support horizontal ducts within 2 feet of each elbow and within 4 feet of each branch intersection.
C.
Support vertical ducts at a maximum interval of 16 feet and at each floor.
3.05
A.
3.6
CONNECTIONS
Equipment Connections: Connect equipment with flexible connectors according to Division 15
Section "Duct Accessories."
FIELD QUALITY CONTROL
A.
Remake leaking joints as required and apply sealants to achieve specified maximum allowable
leakage.
B.
Leakage Test: Perform volumetric measurements and adjust air systems as described in
ASHRAE 1999 "HVAC Applications" Volume, Chapter 36 and ASHRAE 2001 "Fundamentals"
Volume, Chapter 14, and Division 15 Section "Testing, Adjusting, and Balancing."
3.7
ADJUSTING AND CLEANING
A.
Adjust volume control devices as required by the testing and balancing procedures to achieve
required air flow. Refer to Division 15 Section "Testing, Adjusting, and Balancing" for
requirements and procedures for adjusting and balancing air systems.
B.
The Contractor shall take all necessary precautions to protect the ductwork from a build-up of
construction dust and debris. All openings in installed ductwork shall be sealed with a protective
sheet plastic wrap. Should the duct system become contaminated with construction dust and
debris, the Contractor, at his own expense, shall hand vacuum the interior of the duct system to
the satisfaction of the Engineer.
END OF SECTION 15815
METAL DUCTS
1230
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SECTION 15820 - DUCT ACCESSORIES
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 and 16 Sections contain requirements that
relate to this Section:
1.
2.
3.
4.
1.2
A.
SUMMARY
This Section includes the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1.3
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Air Outlets and Inlets.”
Division 16 Section “Multiplex Fire Alarm Systems” for duct-mounted fire and
smoke detectors.
Backdraft dampers.
Counterbalanced relief dampers.
Manual-volume dampers.
Fire and smoke dampers.
Actuators.
Turning vanes.
Duct-mounted access doors and panels.
Flexible connectors.
Flexible ducts.
Duct accessory hardware.
45-Degree takeoffs.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division
15 Section “Basic Mechanical Requirements.”
B.
Product data including details for materials, dimensions of individual components,
profiles, and finishes for the following items:
1.
2.
3.
4.
5.
6.
7.
Backdraft dampers and counterbalanced relief dampers.
Manual-volume dampers.
Fire and smoke dampers.
Actuators.
Duct silencers.
Duct-mounted access doors and panels.
Flexible ducts.
DUCT ACCESSORIES
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8.
9.
10.
C.
Stainless steel flexible ducts.
Turning vanes.
45-Degree take-offs.
Shop Drawings: Detail equipment assemblies and indicate dimensions, weights,
loadings, required clearances, method of field assembly, components, location, and
size of each field connection. Detail the following:
1.
2.
Special fittings and manual- and automatic-volume-damper installations.
Fire- and smoke-damper installations, including sleeves and duct-mounted
access doors and panels.
D.
Product Certificates: Submit certified test data on dynamic insertion loss; self-noise
power levels; and airflow performance data, static-pressure loss, dimensions, and
weights.
E.
Maintenance data for each type of duct accessory required for inclusion in Operating
and Maintenance Manual specified in Division 15 Section “Basic Mechanical
Requirements.”
1.4
A.
QUALITY ASSURANCE
Comply with locally adopted edition of the following codes for fire and smoke damper
materials, components, and installations.
1.
2.
B.
“International Building Code.”
“International Mechanical Code.”
NFPA Compliance: Comply with the following NFPA standards:
1.
2.
NFPA 90A, "Installation of Air Conditioning and Ventilating Systems."
NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems."
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS
Subject to compliance with requirements, provide duct accessories by one of the
following:
1.
Backdraft Dampers and Counterbalanced Relief Dampers:
a.
b.
c.
d.
e.
f.
g.
h.
i.
Air Balance.
American Warming and Ventilating, Inc.
Arrow Louver and Damper.
Greenheck.
Louvers and Dampers.
Penn Ventilator Co.
Ruskin Mfg. Co.
Cesco Products.
P.H.L.
DUCT ACCESSORIES
1230
15820 - 2
2.
Manual Volume Control Dampers:
a.
b.
c.
d.
e.
f.
g.
h.
i.
3.
Fire and Smoke Dampers:
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
4.
Air Balance Inc.
Cesco Products.
Ductmate Industries, Inc.
Duro Dyne Corp.
Flexmaster.
Greenheck.
Ruskin Mfg. Co.
Semco Mfg., Inc.
Ventfabrics.
Flexible Connectors:
a.
b.
c.
d.
7.
Barber Colman Co.
Duro Dyne Co.
Sheet Metal Connectors, Inc.
Duct Access Doors/Panels:
a.
b.
c.
d.
e.
f.
g.
h.
i.
6.
Air Balance.
American Warming and Ventilation, Inc.
Arrow Louver and Damper.
Cesco Products.
Greenheck.
Louvers and Dampers, Inc.
Penn Ventilator.
Phillips - Aire.
Prefco Products, Inc.
Ruskin Mfg. Co.
United Air.
Turning Vanes:
a.
b.
c.
5.
Air Balance.
American Warming and Ventilating, Inc.
Arrow Louver and Damper.
Cesco Products.
Greenheck.
Louvers and Dampers.
Penn Ventilator.
Ruskin Mfg. Co.
United Air.
American/Elgen Co.
Duro Dyne Corp.
Flexaust.
Ventfabrics, Inc.
Flexible Ducts:
a.
Flexmaster.
DUCT ACCESSORIES
1230
15820 - 3
b.
8.
Accessories Hardware:
a.
b.
9.
Ventfabrics, Inc.
Young Regulator Co.
45-Degree Takeoffs:
a.
b.
2.2
Thermaflex.
Flexmaster.
Sheet Metal Connectors, Inc.
BACKDRAFT DAMPERS
A.
General: Provide factory-fabricated backdraft dampers, complete with required
hardware and accessories. Damper frame and blades to be fabricated from a
minimum of .064 thick 6063-T6 extruded aluminum with blade shafts rotating in heavy
walled, self-lubricating nylon bearings. Shafts shall be permanently secured to blades
that are PVC gasketed. Damper shall be able to handle maximum spot velocities to
2500 FPM on a 36" wide unit and start to open at a minimum of .05" WG.
B.
Dampers shall be coordinated for horizontal or vertical installation depending on
application.
1.
2.3
Provide Cesco model BDA or equivalent.
MANUAL-VOLUME DAMPERS
A.
General: Provide factory-fabricated volume-control dampers, complete with required
hardware and accessories. Stiffen damper blades to provide stability under operating
conditions. Provide locking device to hold single-blade dampers in a fixed position
without vibration. Close duct penetrations for damper components to seal duct
consistent with pressure class. Provide end bearings or other seals for ducts with
pressure classifications of 3 inches or higher. Extend axles full length of damper
blades. Provide bearings at both ends of operating shaft. Provide concealed damper
operators when above hard ceilings.
B.
Manual Volume Dampers ( 12 inches and less): Shall be single blade type constructed
of 18 gauge galvanized steel frames with 20 gauge galvanized steel blades, 3/8"
cadmium plated shafts and factory furnished hand quadrant locks.
1.
C.
Manual Volume Dampers (above 12 inches high): Shall be opposed blade type
constructed of 16 gauge galvanized steel frames with 16 gauge galvanized steel
blades, 1/2" cadmium plated round control shafts and factory furnished hand quadrant
locks.
1.
D.
Provide United Air Model BS-1 or equivalent.
Provide United Air Model DO-3 or equivalent.
Jackshaft: 1-inch-diameter, galvanized-steel pipe rotating within a pipe bearing
assembly mounted on supports at each mullion and at each end of multiple damper
DUCT ACCESSORIES
1230
15820 - 4
assemblies. Provide appropriate length and number of mounting to connect linkage of
each damper of a multiple damper assembly.
E.
2.4
Quadrant Locks: Zinc-plated, die-cast core with a heavy-gage dial and handle made of
3/32-inch-thick zinc-plated steel, and a 3/4-inch hexagon locking nut. Provide center
hole to suit damper operating rod size. Provide elevated platform for insulated duct
mounting.
FIRE DAMPERS
A.
Provide curtain type dampers which are UL labeled, NFPA 90 approved in accordance
with UL 555 standards.
B.
Dampers shall have 21 gauge galvanized steel rolled and formed frame and
interlocking blades, with 1 1/2 hour low leakage rating.
C.
Dampers shall have a replaceable fusible link rated at 165 degrees F.
D.
Dampers shall be provided with field manufactured steel sleeves and angles in
accordance with manufacturer installation instructions and UL 555.
E.
Dampers mounted in the horizontal position shall be provided with a blade lock and
stainless steel negator closure spring.
F.
Dampers for installation in round ducts shall be equal to Prefco type CR frame, folding
blade type, with 100% free area. Dampers for installation in low velocity rectangular
ducts shall be equal to Prefco #5500-LPB frame, 95% free area.
G.
Dampers mounted in ducts shall have access door to service damper.
paragraph in this section on access doors.
2.5
Refer to
CEILING FIRE DAMPERS
A.
Provide ceiling fire dampers which are UL labeled, NFPA 90A approved and tested and
approved under UL Standard 555. Dampers shall have a UL label which indicates the
hourly rating of the damper in compliance with the specified ceiling assembly.
B.
Ceiling damper size shall not exceed the UL maximum size limit of 576 Square Inches.
C.
All ceiling dampers shall be installed in strict accordance with the manufactures UL
approved installation instructions, with 212 degree F replaceable fusible link equal to
Prefco #5600 series ceiling dampers.
D.
Ceiling dampers installed in lay-in or exposed portions of surface type diffusers,
damper shall be provided with ceramic blanket to protect the exposed back panel.
2.6
A.
TURNING VANES
Fabricate to comply with SMACNA's "HVAC Duct Construction Standards--Metal and
Flexible”, Figures 2-2 thru 2-7.
DUCT ACCESSORIES
1230
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B.
2.7
Manufactured Turning Vanes: Fabricate of 1-1/2-inch- (38-mm-) wide, curved blades
set 3/4 inch (19 mm) o.c.; support with bars perpendicular to blades set 2 inches (50
mm) o.c.; and set into side strips suitable for mounting in ducts.
DUCT-MOUNTED ACCESS DOORS AND PANELS
A.
General: Provide access doors where required of construction and airtightness
suitable for duct pressure class.
B.
Frame: Provide min. 22 ga. galvanized, sheet steel, with bend-over tabs and PVC
foam gaskets.
C.
Door: Provide 24 ga. double-wall, galvanized, sheet metal construction with insulation
fill and thickness, and number of hinges and locks as indicated for duct pressure class.
Include vision panel where indicated. Include 1-by-1-inch (25-by-25-mm) butt or piano
hinge and cam latches.
D.
Seal around frame attachment to duct and door to frame with neoprene or foam rubber.
E.
Insulation: 1-inch- (25-mm-) thick, fibrous-glass or polystyrene-foam board.
2.8
FLEXIBLE CONNECTORS
A.
General: Provide flame-retarded or noncombustible fabrics, coatings, and adhesives
complying with UL Standard 214, “Tests for Flame Proprogation of Particle Films” and
UL 181, Class 1, “Factory Made Air Ducts and Air Connectors.
B.
Standard Metal-Edged Connectors: Factory fabricated with a strip of fabric wide
attached to two strips of 24 gauge thick, galvanized, sheet steel or 0.032-inch
aluminum sheets. Select metal compatible with connected duct system. Fold and
crimp metal edge strips onto fabric as illustrated in SMACNA, HVAC Duct Standard,
1st Edition, Fig. 2-19.
1.
C.
Standard - 3" wide fabric with 3" wide metal on each side for 9" total width.
Fabrics: Provide air-tight, water-tight, and fire retardant glass fabrics with appropriate
coatings and characteristics for various applications as described.
1.
Conventional, Indoor System Flexible Connector Fabric: Heavy fabric double
coated with polychloroprene.
a.
b.
c.
2.
Minimum Weight: 30 oz./sq.
Tensile Strength: 480 lbf/inch in the warp, and 360 lbf/inch in the filling.
Provide Ventfabrics “Ventglas” or equal.
Conventional, Outdoor System Flexible Connector Fabric: Heavy fabric double
coated with a synthetic-rubber, weatherproof coating resistant to the sun's
ultraviolet rays and ozone environment.
a.
b.
c.
Minimum Weight: 26 oz./sq. yd.
Tensile Strength: 530 lbf/inch in the warp, and 440 lbf/inch in the filling.
Provide Ventfabrics “Ventlon” or equal.
DUCT ACCESSORIES
1230
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2.9
FLEXIBLE DUCTS
A.
General: Comply with UL 181, Class 1, and/or Class 0, “Factory Made Air Ducts & Air
Connectors and NFPA 90A and 90B.
B.
Flexible Ducts - Insulated: Factory-fabricated insulated, round duct, with an outer
jacket enclosing a 1-1/2 inch thick fiberglass insulating blanket with fiberglass scrim
around a continuous inner liner.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
C.
2.10
A.
2.11
Reinforcement: Coated steel wire helix permanently bonded to inner liner.
Outer Jacket: Polyethylene film.
Inner Liner: Polyethylene or CPE film.
Operating pressure from +6 inches to -1 inch.
Provide Thermaflex G-KM, Flexmaster Type 8 or approved equal.
Reinforcement: Coated steel wire helix permanently bonded to inner liner.
Outer Jacket: Fiberglass reinforced metalized film laminate.
Inner Liner: Polyethylene or CPE film.
Operating pressure from +10 inches to -1 inch.
Provide Thermaflex M-KF, Flexmaster Type 8M or approved equal.
Flexible Duct Clamps: Stainless steel band with cadmium plated hex screw to tighten
band with a worm gear action. Provide in sizes to match duct sizes.
ACCESSORY HARDWARE
Splitter Damper Accessories: Zinc-plated damper blade bracket; 1/4-inch, zinc-plated
operating rod; and a duct-mounted, ball-joint bracket with flat rubber gasket and
square-head set screw.
45-DEGREE TAKEOFFS
A.
General: Sheet metal high efficiency takeoff with a rectangular opening, 45-degree
slope on the body, and manual volume control damper with locking device.
B.
Minimum 26-gauge galvanized steel.
PART 3 - EXECUTION
3.1
A.
3.2
A.
EXAMINATION
Examine areas and conditions for compliance with requirements for installation
tolerances and other conditions affecting performance of duct accessories. Do not
proceed with installation until unsatisfactory conditions are corrected.
INSTALLATION
Install duct accessories according to Manufacturer’s installation instructions and
applicable details shown in SMACNA's "HVAC Duct Construction Standards--Metal
and Flexible" for metal ducts. Do not proceed with installation until unsatisfactory
DUCT ACCESSORIES
1230
15820 - 7
conditions are corrected.
B.
Install volume dampers in lined duct with methods to avoid damage to and erosion of
duct liner.
C.
Provide flexible duct connections wherever ductwork connects to vibration producing
equipment. Seal seams with manufacturers recommended bonding agent.
D.
Install fire and smoke dampers according to manufacturer's UL-approved written
instructions.
1.
E.
Install fusible links in fire dampers.
Install duct access panels for access to both sides of duct coils. Install duct access
panels downstream from volume dampers, fire dampers, turning vanes, and
equipment.
1.
2.
Install duct access panels to allow access to interior of ducts for cleaning,
inspecting, adjusting, and maintaining accessories and terminal units.
Install access panels on side of duct where adequate clearance is available.
F.
Label access door locations on the ceiling grid below access door location with an
engraved label.
G.
Install flexible ducts to minimize air restrictions. The maximum allowable length of any
flexible duct shall be 5 feet. Changes in direction 90 degrees or greater shall not be
made with flexible duct.
H.
Install turning vanes in square or rectangular 90 degrees elbows in supply, return, and
exhaust air systems and elsewhere as indicated.
3.3
ADJUSTING
A.
Adjust duct accessories for proper settings.
B.
Adjust fire and smoke dampers for proper action.
C.
Final positioning of manual-volume dampers is specified in Division 15 Section
"Testing, Adjusting, and Balancing."
END OF SECTION 15820
DUCT ACCESSORIES
1230
15820 - 8
SECTION 15838 - POWER VENTILATORS
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section.
1.
2.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
SUMMARY
A.
This Section includes the following:
1.
2.
3.
4.
1.3
Centrifugal roof ventilators.
Upblast propeller roof exhaust fans.
Centrifugal wall ventilators.
Ceiling-mounting ventilators.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15
Section “Basic Mechanical Requirements.”
B.
Product Data: Include rated capacities, furnished specialties, and accessories for each type of
product indicated and include the following:
1.
2.
3.
4.
5.
C.
Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads,
required clearances, method of field assembly, components, and location and size of each field
connection.
1.
2.
D.
Certified fan performance curves with system operating conditions indicated.
Certified fan sound-power ratings.
Motor ratings and electrical characteristics, plus motor and electrical accessories.
Material gages and finishes, including color charts.
Dampers, including housings, linkages, and operators.
Wiring Diagrams: Power, signal, and control wiring. Differentiate between manufacturerinstalled and field-installed wiring.
Vibration Isolation Base Details:
Detail fabrication, including anchorages and
attachments to structure and to supported equipment. Include auxiliary motor slides and
rails, and base weights.
Maintenance Data: For power ventilators to include in maintenance manuals specified in
Division 15 Section “Basic Mechanical Requirements.”
POWER VENTILATORS
1230
15838 - 1
1.4
QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B.
NEMA Compliance: Motors and electrical accessories shall comply with NEMA standards.
C.
UL Standard: Power ventilators shall comply with UL 705.
1.5
DELIVERY, STORAGE, AND HANDLING
A.
Deliver fans as factory-assembled unit, to the extent allowable by shipping limitations, with
protective crating and covering.
B.
Disassemble and reassemble units, as required for moving to final location, according to
manufacturer's written instructions.
C.
Lift and support units with manufacturer's designated lifting or supporting points.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Subject to compliance with requirements, provide products by one of the following:
1.
Centrifugal Roof Ventilators:
a.
b.
c.
d.
e.
f.
2.
Centrifugal Wall Ventilators:
a.
b.
c.
d.
e.
f.
3.
Acme Engineering & Mfg. Corp.
Carnes Company HVAC.
Cook, Loren Company.
Greenheck Fan Corp.
JennFan; Div. of Breidert Air Products, Inc.
Penn Ventilation Companies, Inc.
Acme Engineering & Mfg. Corp.
Carnes Company HVAC.
Cook, Loren Company.
Greenheck Fan Corp.
JennFan; Div. of Breidert Air Products, Inc.
Penn Ventilation Companies, Inc.
Ceiling-Mounting Ventilators:
a.
b.
c.
d.
e.
f.
g.
Broan Mfg. Co., Inc.
Carnes Company HVAC.
Cook, Loren Company.
Greenheck Fan Corp.
JennFan; Div. of Breidert Air Products, Inc.
NuTone Inc.
Penn Ventilation Companies, Inc.
POWER VENTILATORS
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2.2
CENTRIFUGAL ROOF VENTILATORS
A.
Description: Belt-driven or direct-driven centrifugal fans consisting of housing, wheel, fan shaft,
bearings, motor and disconnect switch, drive assembly, curb base, and accessories.
B.
Housing: Removable, spun-aluminum, dome top and outlet baffle, aluminum base with venturi
inlet cone.
C.
Fan Wheels: Aluminum hub and wheel with backward-inclined blades.
D.
Belt-Driven Drive Assembly: Resiliently mounted to housing, with the following features:
1.
2.
3.
4.
E.
Accessories:
1.
2.
3.
4.
5.
F.
Variable-Speed Controller: Solid-state control to reduce speed from 100 percent to less
than 50 percent.
Disconnect Switch: Nonfusible type, with thermal-overload protection mounted inside fan
housing, factory wired through an internal aluminum conduit.
Bird Screens: Removable, 1/2-inch (13-mm) mesh, aluminum or brass wire.
Dampers: Counterbalanced, parallel-blade, backdraft dampers mounted in curb base;
factory set to close when fan stops.
Motorized Dampers: Parallel-blade dampers mounted in curb base with electric actuator;
wired to close when fan stops.
Roof Curbs: Galvanized steel; mitered and welded corners; 1-1/2-inch- (40-mm-) thick, rigid,
fiberglass insulation adhered to inside walls; and 1-1/2-inch (40-mm) wood nailer. Size as
required to suit roof opening and fan base.
1.
2.
2.3
Fan Shaft: Turned, ground, and polished steel; keyed to wheel hub.
Shaft Bearings: Permanently lubricated, permanently sealed, self-aligning ball bearings.
Pulleys: Cast-iron, adjustable-pitch motor pulley.
Fan and motor isolated from exhaust airstream.
Configuration: Built-in cant and mounting flange.
Overall Height: 14 inches.
CENTRIFUGAL WALL VENTILATORS
A.
Description: Belt-driven or direct-driven centrifugal fans consisting of housing, wheel, fan shaft,
bearings, motor and disconnect switch, drive assembly, and accessories.
B.
Housing: Heavy-gage, removable, spun-aluminum, dome top and outlet baffle; venturi inlet
cone.
C.
Fan Wheel: Aluminum hub and wheel with backward-inclined blades.
D.
Belt-Driven Drive Assembly: Resiliently mounted to housing, with the following features:
1.
2.
3.
4.
E.
Fan Shaft: Turned, ground, and polished steel; keyed to wheel hub.
Shaft Bearings: Permanently lubricated, permanently sealed, self-aligning ball bearings.
Pulleys: Cast-iron, adjustable-pitch motor pulley.
Fan and motor isolated from exhaust airstream.
Accessories:
1.
Variable-Speed Controller: Solid-state control to reduce speed from 100 percent to less
than 50 percent.
POWER VENTILATORS
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2.
3.
4.
5.
6.
2.4
Disconnect Switch: Nonfusible type, with thermal-overload protection mounted inside fan
housing, factory wired through internal aluminum conduit.
Bird Screens: Removable, 1/2-inch (13-mm) mesh, aluminum or brass wire.
Wall Grille: Ring type for flush mounting.
Dampers: Counterbalanced, parallel-blade, backdraft dampers mounted in wall sleeve;
factory set to close when fan stops.
Motorized Dampers: Parallel-blade dampers mounted in curb base with electric actuator;
wired to close when fan stops.
CEILING-MOUNTING VENTILATORS
A.
Description: Centrifugal fans designed for installing in ceiling or wall or for concealed in-line
applications.
B.
Housing: Steel, lined with acoustical insulation.
C.
Fan Wheel: Centrifugal wheels directly mounted on motor shaft. Fan shrouds, motor, and fan
wheel shall be removable for service.
D.
Grille: Plastic, louvered grille with flange on intake and thumbscrew attachment to fan housing.
E.
Electrical Requirements: Junction box for electrical connection on housing and receptacle for
motor plug-in.
F.
Accessories:
1.
2.
3.
4.
2.5
Variable-Speed Controller: Solid-state control to reduce speed from 100 percent to less
than 50 percent.
Manual Starter Switch: Single-pole rocker switch assembly with cover and pilot light.
Isolation: Rubber-in-shear vibration isolators.
Manufacturer's standard roof jack or wall cap, and transition fittings.
MOTORS
A.
Motor Construction: NEMA MG 1, general purpose, continuous duty, Design B.
B.
Enclosure Type: Open dripproof.
2.6
SOURCE QUALITY CONTROL
A.
Sound-Power Level Ratings: Comply with AMCA 301, "Methods for Calculating Fan Sound
Ratings from Laboratory Test Data." Factory test fans according to AMCA 300, "Reverberant
Room Method for Sound Testing of Fans." Label fans with the AMCA-Certified Ratings Seal.
B.
Fan Performance Ratings: Establish flow rate, pressure, power, air density, speed of rotation,
and efficiency by factory tests and ratings according to AMCA 210, "Laboratory Methods of
Testing Fans for Rating."
PART 3 - EXECUTION
3.1
INSTALLATION
POWER VENTILATORS
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A.
Install power ventilators level and plumb.
B.
Secure roof-mounting fans to roof curbs with cadmium-plated hardware. Refer to Division 7
Section "Roof Accessories" for installation of roof curbs.
C.
Ceiling Units: Suspend units from structure; use steel wire or metal straps.
D.
Install units with clearances for service and maintenance.
E.
Label units according to requirements specified in Division 15 Section "Mechanical
Identification."
3.2
CONNECTIONS
A.
Duct installation and connection requirements are specified in other Division 15 Sections.
Drawings indicate general arrangement of ducts and duct accessories. Make final duct
connections with flexible connectors. Flexible connectors are specified in Division 15 Section
"Duct Accessories."
B.
Install ducts adjacent to power ventilators to allow service and maintenance.
C.
Electrical: Refer to Section 15010 “Basic Mechanical Requirements” for electrical connections
to mechanical equipment.
3.3
FIELD QUALITY CONTROL
A.
Equipment Startup Checks:
1.
2.
3.
4.
5.
B.
Verify that shipping, blocking, and bracing are removed.
Verify that unit is secure on mountings and supporting devices and that connections to
ducts and electrical components are complete. Verify that proper thermal-overload
protection is installed in motors, starters, and disconnect switches.
Verify that cleaning and adjusting are complete.
Disconnect fan drive from motor, verify proper motor rotation direction, and verify fan
wheel free rotation and smooth bearing operation. Reconnect fan drive system, align and
adjust belts, and install belt guards.
Verify lubrication for bearings and other moving parts.
Starting Procedures:
1.
2.
Energize motor and adjust fan to indicated rpm.
Measure and record motor voltage and amperage.
C.
Operational Test: After electrical circuitry has been energized, start units to confirm proper
motor rotation and unit operation. Remove malfunctioning units, replace with new units, and
retest.
D.
Test and adjust controls and safeties.
equipment.
E.
Shut unit down and reconnect automatic temperature-control operators.
F.
Refer to Division 15 Section "Testing, Adjusting, and Balancing" for testing, adjusting, and
balancing procedures.
POWER VENTILATORS
Replace damaged and malfunctioning controls and
1230
15838 - 5
G.
Replace fan and motor pulleys as required to achieve design airflow.
H.
Repair or replace malfunctioning units.
3.4
ADJUSTING
A.
Adjust damper linkages for proper damper operation.
B.
Adjust belt tension.
C.
Lubricate bearings.
3.5
CLEANING
A.
On completion of installation, internally clean fans according to manufacturer's written
instructions. Remove foreign material and construction debris. Vacuum fan wheel and cabinet.
B.
After completing system installation, including outlet fitting and devices, inspect exposed finish.
Remove burrs, dirt, and construction debris and repair damaged finishes.
3.6
DEMONSTRATION
A.
Engage a factory-authorized service representative to train Owner's maintenance personnel to
adjust, operate, and maintain power ventilators.
1.
2.
3.
Train Owner's maintenance personnel on procedures and schedules for starting and
stopping, troubleshooting, servicing, and maintaining equipment and schedules.
Review data in maintenance manuals.
Schedule training with Owner, through Architect, with at least seven days' advance
notice.
END OF SECTION 15838
POWER VENTILATORS
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SECTION 15855 - AIR OUTLETS AND INLETS
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specification Sections, apply to this Section.
B.
Related Sections:
section:
1.
2.
3.
4.
1.2
The following Division 15 sections contain requirements that relate to this
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Metal Ductwork.”
“Testing, Adjusting and Balancing.”
SUMMARY
A.
Extent of air outlets and inlets work is indicated by drawings and schedules, and by requirements of
this section.
B.
Types of outlets and inlets required for project include the following:
1.
2.
3.
4.
1.3
Ceiling air diffusers.
Wall registers and grilles.
Louvers.
Roof vents.
SUBMITTALS
A.
General: Submit the following in accordance with Conditions of Contract and Division 15 Section
"Basic Mechanical Requirements."
B.
Product Data: For each model indicated, include the following:
1.
2.
C.
1.4
Data Sheet: For each type of air outlet and inlet, and accessory furnished; indicate
construction, finish, and mounting details.
Performance Data: Include throw and drop, static-pressure drop, and noise ratings for each
type of air outlet and inlet.
Maintenance Data: Submit maintenance data, including cleaning instructions for finishes, and
spare parts lists. Include this data and product data, in Operating and Maintenance Manuals
specified in Division 15 Section "Basic Mechanical Requirements."
QUALITY ASSURANCE
A.
Manufacturer's Qualifications: Firms regularly engaged in manufacture of air outlets and inlets of
types and capacities required, whose products have been in satisfactory use in similar service for
not less than 5 years.
B.
Codes and Standards:
AIR OUTLET AND INLETS
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15855 - 1
1.
2.
3.
4.
ARI Compliance: Test and rate air outlets and inlets in accordance with ARI 650 “Standard
for Air Outlets and Inlets.”
ASHRAE Compliance: Test and rate air outlets and inlets in accordance with ASHRAE 70
"Method of Testing for Rating the Air Flow Performance of Outlets and Inlets."
AMCA Compliance: Test and rate louvers in accordance with AMCA 500 "Test Method for
Louvers, Dampers and Shutters."
AMCA Seal: Provide louvers bearing AMCA Certified Rating Seal.
PART 3 - PRODUCTS
2.1
A.
MANUFACTURERS
Subject to compliance with requirements, provide air outlets and inlets of one of the following:
1.
Diffusers
a.
b.
c.
d.
e.
f.
g.
h.
2.
Registers and Grilles
a.
b.
c.
d.
e.
f.
g.
h.
i.
3.
Anemostat Products Div.; Dymanics Corp. of America.
Carnes Co.; Div. of Wehr Corp.
E.H. Price
Hart & Cooley
J & J Register
Krueger Mfg. Co.
MetalAire
Titus Products Div.; Philips Industries, Inc.
Tuttle & Bailey; Div. of Interpace Corp.
Louvers
a.
b.
c.
d.
e.
f.
g.
4.
Carnes Co.; Div. of Wehr Corp.
E.H. Price
Hart & Cooley
J & J Register
Krueger Mfg. Co.
MetalAire
Titus Products Div.; Philips Industries, Inc.
Tuttle & Bailey; Div. of Interpace Corp.
Arrow United Industries.
Carnes Co.; Div. of Wehr Corp.
Dowco Corp.
Greenheck
Industrial Louvers, Inc.
NCA Manufacturing
Ruskin Mfg. Co.
Roof Vents
a.
b.
c.
d.
e.
f.
American Warming & Ventilating Inc.
Carnes Co.; Div. of Wehr Corp.
Dowco Corp.
Greenheck
Industrial Louvers, Inc.
Ruskin Mfg. Co.
AIR OUTLET AND INLETS
1230
15855 - 2
2.2
CEILING AIR DIFFUSERS
A.
General: Except as otherwise indicated, provide manufacturer's standard ceiling air diffusers where
shown; of size, shape, capacity and type indicated; constructed of materials and components as
indicated, and as required for complete installation.
B.
Performance: Provide ceiling air diffusers that have, as minimum, temperature and velocity
traverses, throw and drop, and noise criteria ratings for each size device as listed in manufacturer's
current data.
C.
Ceiling Compatibility: Provide diffusers with border styles that are compatible with adjacent ceiling
systems, and that are specifically manufactured to fit into ceiling module with accurate fit and
adequate support. Refer to general construction drawings and specifications for types of ceiling
systems which will contain each type of ceiling air diffuser.
D.
Types: Provide ceiling diffusers of type, capacity, and with accessories and finishes as listed on
diffuser schedule.
2.3
WALL REGISTERS AND GRILLES
A.
General: Except as otherwise indicated, provide manufacturer's standard wall registers and grilles
where shown; of size, shape, capacity and type indicated; constructed of materials and components
as indicated, and as required for complete installation.
B.
Performance: Provide wall registers and grilles that have, as minimum, temperature and velocity
traverses, throw and drop, and noise criteria ratings for each size device and listed in
manufacturer's current data.
C.
Wall Compatibility: Provide registers and grilles with border styles that are compatible with adjacent
wall systems, and that are specifically manufactured to fit into wall construction with accurate fit and
adequate support. Refer to general construction drawings and specifications for types of wall
construction which will contain each type of wall register and grille.
D.
Types: Provide wall registers and grilles of type, capacity, and with accessories and finishes as
listed on register and grille schedule. The following requirements shall apply to nomenclature
indicated on schedule.
2.4
LOUVERS
A.
General: Except as otherwise indicated, provide manufacturer's standard louvers where shown; of
size, shape, capacity and type indicated; constructed of materials and components as indicated,
and as required for complete installation.
B.
Performance: Provide louvers that have maximum free area, and minimum pressure drop of each
type as listed in manufacturer's current data, complying with louver schedule.
C.
Substrate Compatibility: Provide louvers with frame and sill styles that are compatible with adjacent
substrate, and that are specifically manufactured to fit into construction openings with accurate fit
and adequate support, for weatherproof installation. Refer to general construction drawings and
specifications for types of substrate which will contain each type of louver.
D.
Materials: Construct of aluminum extrusions, ASTM B 221, Alloy 6063-T52. Weld units or use
stainless steel fasteners.
AIR OUTLET AND INLETS
1230
15855 - 3
E.
2.5
Louver Screens: On inside face of exterior louvers, provide 1/2" square mesh anodized aluminum
wire bird screens mounted in removable extruded aluminum frames.
ROOF VENTS
A.
General: Except as otherwise indicated, provide manufacturer's standard roof vents where shown;
of size, shape, capacity and type indicated, constructed of materials and components as indicated,
and as required for complete installation.
B.
Housing: Low silhouette, heavy duty galvanized steel construction, 20 gauge steel hoods and 16
gauge steel bases for sizes over 36 by 36, standard gauge construction for sizes 36 by 36 and
under. Provide continuously welded curb cap seams, galvanized steel bird screens, prime coat
gray finish.
C.
Housing: Low silhouette, heavy duty aluminum construction, 20 gauge aluminum hoods and 16
gauge aluminum bases for sizes over 36 by 36, standard gauge construction for sizes 36 by 36 and
under. Provide continuously welded curb cap seams, aluminum bird screens, prime coat gray
finish.
D.
Roof Curbs: Galvanized steel; mitered and welded corners; 2-inch- (50-mm-) thick, rigid, fiberglass
insulation adhered to inside walls; and 2-inch (50-mm) wood nailer. Size as required to suit roof
opening and fan base.
1.
2.
Configuration: Self-flashing without a cant strip, with mounting flange.
Overall Height: 12 inches (300 mm).
E.
Performance: Provide roof vents that have minimum free area, and maximum pressure drop of
each type as listed in manufacturer's current data, complying with roof vent schedule.
F.
Substrate Compatibility: Provide roof vents with curb caps that are compatible with roof curbs listed
as accessories, provided by others or existing as indicated.
G.
Types: Provide roof vents of type, capacity, and with accessories as listed on roof vent schedule.
PART 3- EXECUTION
3.1
A.
3.2
EXAMINATION
Examine areas where diffusers, registers, and grilles are to be installed for compliance with
requirements for installation tolerances and other conditions affecting performance of equipment.
Do not proceed with installation until unsatisfactory conditions have been corrected.
INSTALLATION
A.
Install diffusers, registers, and grilles level and plumb, according to manufacturer's written
instructions, Coordination Drawings, original design, and referenced standards.
B.
Ceiling-Mounted Outlets and Inlets: Drawings indicate general arrangement of ducts, fittings, and
accessories. Air outlet and inlet locations have been indicated to achieve design requirements for
air volume, noise criteria, airflow pattern, throw, and pressure drop. Make final locations where
indicated, as much as practicable. For units installed in lay-in ceiling panels, locate units in the
center of the panel. Where architectural features or other items conflict with installation, notify
Engineer for a determination of final location.
AIR OUTLET AND INLETS
1230
15855 - 4
C.
3.3
A.
3.4
A.
Install diffusers, registers, and grilles with airtight connection to ducts and to allow service and
maintenance of dampers, air extractors, and fire dampers.
ADJUSTING
After installation, adjust diffusers, registers, and grilles to air patterns indicated, or as directed,
before starting air balancing.
CLEANING
After installation of diffusers, registers, and grilles, inspect exposed finish. Clean exposed surfaces
to remove burrs, dirt, and smudges. Replace diffusers, registers, and grilles that have damaged
finishes.
END OF SECTION 15855
AIR OUTLET AND INLETS
1230
15855 - 5
SECTION 15990 - TESTING, ADJUSTING, AND BALANCING
PART 1- GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
B.
Related Sections: The following Division 15 Sections contain requirements that relate to this
Section.
1.
2.
3.
4.
1.2
“Basic Mechanical Requirements.”
“Basic Mechanical Materials and Methods.”
“Duct Accessories.”
“Air Outlets and Inlets.”
SUMMARY
A.
This Section specifies the requirements and procedures for the total mechanical systems testing,
adjusting, and balancing. Requirements include measurement and establishment of the fluid
quantities of the mechanical systems as required to meet design specifications, and recording
and reporting the results.
B.
The testing, adjusting and balancing agency will be the responsibility of the HVAC contrctor.
C.
Test, adjust, and balance the following mechanical systems:
1. Supply air systems, all pressure ranges.
2. Fresh air make-up systems.
3. Exhaust air systems.
D.
Codes and Standards:
1.
1.3
A.
1.4
A.
ASHRAE: Handbook, 1995 "HVAC Applications", Chapter 34, Testing, Adjusting, and
Balancing.
PROJECT CONDITIONS
Systems Operation: Systems shall be fully operational prior to beginning procedures.
SEQUENCING AND SCHEDULING
Respective of which operational season the system is operating in at the time of initial testing, an
opposite season check of the system is required prior to the final report results being issued. A
draft report shall be issued for review after initial testing.
PART 2 - PRODUCTS
Not Applicable
TESTING, ADJUSTING AND BALANCING
1230
15990 - 1
PART 3 - EXECUTION
3.1
A.
PRELIMINARY PROCEDURES FOR AIR SYSTEM BALANCING
Before operating the system, perform these steps:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
3.2
Prepare “punch list” of items the contractor must correct prior to commencing work.
Obtain design drawings and specifications and become thoroughly acquainted with the
design intent.
Obtain copies of approved shop drawings of all air handling equipment, outlets (supply,
return, and exhaust) and temperature control diagrams.
Compare design to installed equipment and field installations.
Walk the system from the system air handling equipment to terminal units to determine
variations of installation from design.
Check filters for cleanliness.
Check dampers (both volume and fire) for correct and locked position, and temperature
control for completeness of installation before starting fans.
Prepare report test sheets for both fans and outlets. Obtain manufacturer's outlet factors and
recommended procedures for testing. Prepare a summation of required outlet volumes to
permit a crosscheck with required fan volumes.
Determine best locations in main and branch ductwork for most accurate duct traverses.
Place outlet dampers in the full open position.
Prepare schematic diagrams of system "as-built" ductwork and piping layouts to facilitate
reporting.
Lubricate all motors and bearings.
Check fan belt tension.
Check fan rotation.
MEASUREMENTS
A.
Provide all required instrumentation to obtain proper measurements, calibrated to the tolerances
specified in the referenced standards. Instruments shall be properly maintained and protected
against damage.
B.
Provide instruments meeting the specifications of the referenced standards.
C.
Use only those instruments which have the maximum field measuring accuracy and are best
suited to the function being measured.
D.
Apply instrument as recommended by the manufacturer.
E.
Use instruments with minimum scale and maximum subdivisions and with scale ranges proper for
the value being measured.
F.
When averaging values, take a sufficient quantity of readings which will result in a repeatability
error of less than 5 percent. When measuring a single point, repeat readings until 2 consecutive
identical values are obtained.
G.
Take all reading with the eye at the level of the indicated value to prevent parallax.
H.
Use pulsation dampeners where necessary to eliminate error involved in estimating average of
rapidly fluctuation readings.
I.
Take measurements in the system where best suited to the task.
TESTING, ADJUSTING AND BALANCING
1230
15990 - 2
3.3
PERFORMING TESTING, ADJUSTING, AND BALANCING
A.
Perform testing and balancing procedures on each system identified, in accordance with the
detailed procedures outlined in the referenced standards.
B.
Cut insulation, ductwork, and piping for installation of test probes to the minimum extent
necessary to allow adequate performance of procedures.
C.
Patch insulation, ductwork, and housings, using materials identical to those removed.
D.
Seal ducts and piping, and test for and repair leaks.
E.
Seal insulation to re-establish integrity of the vapor barrier.
F.
Mark equipment settings, including damper control positions, valve indicators, fan speed control
levers, and similar controls and devices, to show final settings. Mark with paint or other suitable,
permanent identification materials.
G.
Retest, adjust, and balance systems subsequent to significant system modifications, and
resubmit test results.
H.
Test, adjust and balance domestic hot water circulating loops so that the pressure drop in each
loop is equal.
3.4
RECORD AND REPORT DATA
A.
Record all data obtained during testing, adjusting, and balancing in accordance with, and on the
forms ecommended by the referenced standards, and as approved on the sample report forms.
B.
Prepare report of recommendations for correcting unsatisfactory mechanical performances when
system cannot be successfully balanced.
END OF SECTION 15990
TESTING, ADJUSTING AND BALANCING
1230
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