Vertical Unit Specifications
PART 1 GENERAL
1.01
SUBMITTALS
A. Submit shop drawings and product data sheets indicating cross section of cabinets, general assembly, and materials
used in fabrication.
B. Submit product data indicating typical catalog of information including arrangement.
C. Indicate mechanical and electrical service locations and requirements, specifically indicating deviations from
indicated products.
D. Submit manufacturer’s installation instructions.
1.02
1.03
OPERATION AND MAINTENANCE DATA:
A.
Submit piping instructions.
B.
Include manufacturer’s descriptive installation, operating and maintenance instructions.
QUALIFICATIONS:
A.
1.04
1.05
Manufacturer Company specializing in manufacturing the products specified in this section with minimum 10 years
documented experience.
REGULATORY REQUIREMENTS
A.
Units must be UL listed as air handler unit.
B.
Unit performance data must be rated in accordance with ARI standard 350 latest versions, and must display the ARI
symbol on all standard units. If a manufacturer does not participate in the ARI Certification program, specified
equipment must be witnessed by an engineer to meet the criteria of the specifications.
C.
Conform to applicable NFPA 70 code for internal wiring of factory wired equipment.
WARRANTY:
A.
Provide a full parts warranty for one year from startup or 18 months from shipment, whichever comes first.
PART II PRODUCTS
2.04
VERTICAL FAN COILS:
A.
B.
Coils:
1.
Coils are 100% underwater pressure-tested at 350 psi with 300 psi working pressure. Steam coils are rated
for up to 15 psi or 250 degrees F.
2.
Copper tubes are constructed as ½” O.D. with .017” wall thickness; tubes are staggered for maximum heat
transfer.
3.
Evenly spaced aluminum fins are high-efficiency, .0045” thick double-sine with rippled edges spaced at 12fins-per-inch.
4.
Manual air vent is standard on all hydronic coils.
Cabinet:
1.
C.
Fully cased, soft-white, powder coated epoxy finished cabinet. Heavy 18-20 gauge cold rolled steel. The
vertical fan coil unit is designed for “free-blow” exposed wall mounting. Deluxe unit has a one-piece
wraparound front panel which is easily removed for complete access for servicing. Filters are concealed from
sight and easily removable without the use of tools. The vertical fan coil units have dedicated left or right
hand coil connections providing larger space for valve packages and controls. The Deluxe cabinet is designed
to be mounted on the floor or wall equipped with six ½” mounting holes to secure the unit to the wall.
Cabinet Insulation:
1.
All units have ½ inch thick, over three-pound density neoprene-coated fiberglass. This type of insulation has
greater thermal efficiency and lower noise levels.
D.
Drain Pan:
1.
Constructed of 18-gauge galvanized steel with welded seams, powder-coated epoxy with ¼” closed cell
insulation with drain connection. This helps eliminate rust or corrosion and assure sweat-proof operation
under adverse dew-point conditions.
2.
Units may be provided with an extended drain pan at the coil connection end to provide control of condensate
from valves and piping.
E. Blowers:
F.
a.
Double-width, double-inlet, forward curved blade and centrifugal wheels are statically and dynamically
balanced to provide a smooth and quiet operation. Blower scrolls and wheels are galvanized for rust-free
operation, and permanently lubricated ball bearings ensure long-service life.
b.
Slide-out blowers with quick-connects for easy servicing.
c.
Blower assembly wiring is provided enclosed in plastic tubing to further ensure whisper-quiet operation.
Motors:
a.
Provide wiring to junction box for single-point field connection.
b.
Direct drive motors have quick-connect plug, permanent split capacitor, thermal overload protection,
oversized bearings and oil reservoirs.
c.
Custom motor mounts designed to reduce noise and eliminate vibration.
d.
Stators are epoxy-dipped for better motor cooling and increased electrical protection.
G. Controls:
3.
Ball Valves
- Full flow (full port) construction for maximum flow through the valve
- UL (VQGU) rated.
- 600 PSI CWP (WOG) service pressure range (max pressure for the valve)
- Valve is double seal tested under pressure before the valve leaves out plant.
- Construction is hot forged brass with packing gland (PTFE) stem design.
- Temperature range is -4F to +350 F.
- Steam rated at 150 WSP (working steam pressure)
4.
Control Valves
The snap-on actuator is specifically designed for use with a two-way / three-way valve body. This
combination provides convenient, reliable and easy installation for a variety of heating and cooling
applications.
The valve actuator is installed after the valve body has been installed onto the fan coil.
The actuator has a variety of voltages and functions. The snap-on features the reliable synchronous
motor driven spring return \operation proven out of millions of valves.
The snap-on actuators are available in general close-off and high close-off, normally open and normally
closed configurations, and a variety of motor voltages.
The snap-on actuator mounts directly onto the body quickly and easily without the need for linkages and
calibration.
Operating pressure limits is 300 PSI. Control valves service hot and chilled water, and up to 50% Glycol.
(Option – ComforTrac - Hydronic Cooling Coil Operation:
i.
Occupied Periods: Blower soft start to 70% rated CFM and control valve will modulate (vary
the GPM) to maintain programmed discharge air temperature and shall increase capacity, if
required, until space temperature is satisfied. CFM will modulate down as the space temperature
set point is approached and maintain LAT to increase Delta T.
ii.
Unoccupied Periods: Blower soft start to 70% and control valve will modulate (vary the GPM)
to maintain programmed discharge air temperature until unoccupied space temperature setting is
satisfied. CFM will modulate down as the space temperature is approached.)
(Option – ComforTrac - Hydronic Heating Coil Operation:
a.
Occupied Periods: Blower soft start to 50% of rated CFM and control valve will modulate (vary
the GPM) to maintain programmed discharge air temperature and shall increase capacity, if
required, until unoccupied space temperature setting is satisfied. Blower will modulate down as
the space set point is approached and maintain LAT to increase Delta T. Use Circulator pumps
in place of modulating control valves for “On Demand”.
b.
Unoccupied Periods: Blower soft start to 50% and control valve will modulate (vary the GPM)
to maintain programmed discharge air temperature until unoccupied set point is satisfied. Fan
will modulate down as the space set point is approached.)
(Option – ComforTrac - Dehumidification Operation:
H.
Humidity Control for Occupied Periods: In the Deadband on a call for dehumidification, the
coil will go into sub-cooling mode to remove excessive moisture and deliver load neutral air to
the controlled space. The unit will not over cool, the space will not over cool and the unit
operation shall comply with the Florida Building Code 2004, Chapter 13 Florida Energy
Efficiency for Building Construction, and ASHRAE 90.1.
b.
Humidity Control for Unoccupied Periods: On a call for dehumidification, the coil will go into
sub-cooling mode to remove excessive moisture and deliver load neutral air to the controlled
space. The unit will not over cool, the space will not over cool and the unit operation shall
comply with the Florida Building Code 2004, Chapter 13 Florida Energy Efficiency for
Building Construction, and ASHRAE 90.1. )
Filter:
a.
I.
a.
One-inch thick fiberglass, throwaway, which can be easily removed without the use of tools.
Tagging & Crating:
a.
Fan coils are custom tagged by room, floor, riser, etc; Individual cartons are foamed into place and woodencrated to virtually eliminate damage. Units are shipped in the order of installation to eliminate excess
handling and field labor.
b.
All fan coils are 100% tested prior to shipment.