LANIER MIDDLE SCHOOL AIR-COOLED
CHILLER PURCHASE
Division of Facilities Management
Department of Facilities Improvement
Project Facilitator
L.B.Rucker
LANIER MIDDLE SCHOOL AIR- COOLED CHILLER PURCHASE
SECTION 01100 - SUMMARY
PART 1 - GENERAL
1.1
SUMMARY
A. This Section includes the following:
1. Work covered by the Contract Documents.
2. Time of Completion
3. Use of premises.
4. Owner's occupancy requirements.
5. Specification formats and conventions.
1.2
WORK COVERED BY CONTRACT DOCUMENTS
A. Project Identification: Lanier Middle School New Air-Cooled Chiller Purchase.
B. Project Location: Lanier Middle School, 817 Brownlee
Memphis, TN 38116.
C. Owner:
Memphis City Schools, Board of Education (MCS). Memphis,
Tennessee.
D. Owner’s Representative. The Owner will designate, at the time the purchase
order is issued to the Contractor, the names and telephone numbers of its
representatives. These will serve as the point of contact between the Contractor
and Owner.
E. The Work included within this specification will be as follows, but is not
necessarily limited to the following work elements:
1. Provide a new McQuay Model AGZ190D 190 Ton Air-Cooled Chiller with
460/3/60 voltage, R410a refrigerant circuits, Chiller shall be factory assembled,
scroll compressor packaged chiller in the quantity and size specified. The chiller
shall consist of multiple (6) scroll compressors, BacNet Control Card, directexpansion evaporator, air-cooled condenser section, control system and all
components necessary for protected and controlled unit operation.
2. Provide non-fused disconnect, GFI convenient outlet, high and low ambient
controls, controls box exhaust fan, 3/4 Inch evaporator insulation, cooler heater
freeze protection to -20 degrees ambient, hot gas bypass w/discharge line
service isolation valves, compressor service isolation valves, entire chiller
security grilles, and cottonwood screen filters for entire chiller.
3. Deliver the chiller completely assembled and charged with refrigerant and oil by
the manufacturer directly to the school.
SUMMARY
01100 - 1
LANIER MIDDLE SCHOOL AIR- COOLED CHILLER PURCHASE
4. Contractor shall comply with the manufacturer’s instructions for rigging and
handling. If unit is to be stored, comply with manufacturer instructions for storage.
F. ACCEPTABLE MANUFACTURS
1. McQuay, York, and Trane may be acceptable as a equal. Naming these
products as equal does not imply that their standard construction or configuration
is acceptable or meets the specifications. Equipment proposed “as equal”, must
meet the specifications including all architectural, mechanical, electrical, and
structural details, all scheduled performance and the job design, plan and
specifications.
1.3
TIME OF COMPLETION
A. The work shall be completed within 40 work days after issuance of a “Notice to
Proceed”. This completion time will be extended should unforeseen problems
create bona fide and unavoidable delays in the diligent pursuit of the project
completion. Should the completion date elapse, the contractor may be assessed
$500.00 in agreed damages per day until the projects are completed.
1.4
WORK UNDER OTHER CONTRACTS
A. General: Cooperate fully with separate contractors so work on those contracts
may be carried out smoothly, without interfering with or delaying work under this
Contract. Coordinate the Work of this Contract with work performed under
separate contracts.
1.5
USE OF PREMISES
A. Work on Memphis City Schools facilities may be conducted as follows:
1. Elementary Schools’ Regular Scheduled School Year: 7:00 A.M. to 4:00 P.M.,
Monday through Friday, except for recognized Memphis City Schools' holidays.
2. High School and Middle Schools’ Regular Scheduled School Year: 7:00 A.M. to
10:00 P.M., Monday through Friday, except for recognized Memphis City
Schools' holidays.
3. All Schools’ Scheduled Summer Vacation: 7:00 A.M. to 4:00 P.M., except for
recognized Memphis City Schools' holidays.
4. Should the contractor desire to work outside of the above hours, a request must
be submitted at least 48 hours in advance of the desired work period.
B. Use of Site: Limit use of premises to work in areas indicated. Do not disturb
portions of Project site beyond areas in which the Work is indicated.
C. Owner Occupancy: Allow for Owner occupancy of Project site.
1. Driveways and Entrances: Keep driveways, loading areas and entrances
serving premises clear and available to Owner, Owner's employees, and
emergency vehicles at all times. Do not use these areas for parking or
storage of materials.
SUMMARY
01100 - 2
LANIER MIDDLE SCHOOL AIR- COOLED CHILLER PURCHASE
2. Schedule deliveries to minimize use of driveways and entrances.
3. Schedule deliveries to minimize space and time requirements for storage of
materials and equipment on-site.
D. Use of Existing Building: Maintain existing building in a weather-tight condition
throughout construction period.
Repair damage caused by construction
operations. Protect building and its occupants during construction period.
1.6
OWNER'S OCCUPANCY REQUIREMENTS
A. Owner Occupancy: Owner will occupy site and existing buildings during entire
construction period. Cooperate with Owner during construction operations to
minimize conflicts and facilitate Owner usage. Perform the Work so as not to
interfere with the educational process. Maintain existing exits, unless otherwise
indicated.
1. Maintain access to existing walkways, corridors, and other adjacent occupied
or used facilities. Do not close or obstruct walkways, corridors, or other
occupied or used facilities without written permission from Owner and
authorities having jurisdiction.
B. Contractor shall obtain approval from authorities having jurisdiction for each
specific portion of the Work to be occupied before Owner occupancy.
1. Before partial Owner occupancy, mechanical and electrical systems shall be
fully operational, and required tests and inspections shall be successfully
completed.
2. On occupancy, Owner will assume responsibility for maintenance and
custodial service for occupied portions of building.
1.7
SPECIFICATION FORMATS AND CONVENTIONS
A. Specification Format: The Specifications are organized into Divisions and
Sections using the 16-division format and CSI/CSC's "MasterFormat" numbering
system.
B. Division 1: Sections in Division 1 govern the execution of the Work of all
Sections in the Specifications.
END OF SECTION 01100
SUMMARY
01100 - 3
LANIER MIDDLE SCHOOL NEW AIR-COOLED CHILLER PURCHASE
AIR- COOLED CHILLER REQUIREMENTS
PART 1 - GENERAL
1.1
A.
1.2
SUMMARY
One (1) Packaged 190 Ton Air Cooled Chiller:
1.
460/3/60 Voltage.
2.
R410a Refrigerant
3.
Two Refrigeration Circuits
4.
Single Points Power Supply
CHILLER COMPONENTS
A.
Compressors: The compressors shall be field serviceable, scoll type with one central
helical rotor meshing with two opposing gaterotors. The gaterotor contact element
shall be constructed of engineered composite material, dimensionally stable up to
1500ºF and wear resistant for extended life. Compressors shall be vibration isolated
from the frame by neoprene compression mounts. If a twin-screw design is used, the
manufacturer shall provide an extended 5-year parts and labor warranty covering all
additional moving parts. Each compressor shall be equipped with a suction and
discharge shut-off valve.
B.
Electric motors: Motors shall be high-torque, two-pole, semi-hermetic, squirrel-cage
induction-type with inherent thermal protection on all three phases, and cooled by
suction gas.
C.
Each compressor shall be equipped with an open transition, wye-delta starter.
1.
D.
The unit shall be equipped with ground fault protection.
Evaporator: The evaporator shall be of the direct expansion type with single pass on
the refrigerant and water side for high efficiency counterflow heat transfer and low
pressure drops, carbon steel shell, and high efficiency finned coppertubes rolled into
steel tube sheets. The evaporator shall be designed, inspected, and stamped in
accordance with ASME Section VIIII requirements. It shall be heated with a
thermostatically controlled electric heater to help freeze protection to -20ºF (-29ºC).
The evaporator shall be designed, inspected, and stamped in accordance with ASME
Section VIIII requirements
1.
Evaporator shall have standard left-hand connections when looking at the unit
control panel.
2.
The evaporator shall be insulated with ¾-inch (19 mm) closed cell polyurethane
insulation
AIR- COOLED CHILLER REQUIREMENTS
LANIER MIDDLE SCHOOL NEW AIR-COOLED CHILLER PURCHASE
E.
Condenser: The condenser 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
condenser coil. Condenser fans shall be propeller-type, arranged for vertical air
discharge and individually driven by direct-drive fan motors. Fan motors shall be
weather protected, three-phase, direct-drive, 850 rpm, totally enclosed air-over motors
(TEAO), with class F insulation or better. ODP motors are not acceptable. Each fan
shall be housed in its own compartment to eliminate condenser air cross-flow during
fan cycling and shall be equipped with a heavy-gauge close-meshed PVC-coated fan
guard.
F.
Refrigerant Circuit: The unit must have refrigerant circuits completely independent of
each other with one compressor per circuit. Each circuit shall include an electronic
expansion valve, liquid line shut-off valve, replaceable core filter-drier, sight glass with
moisture indicator, and combination discharge check and shutoff valve. Unit shall be
equipped with a liquid line solenoid valve.
G.
Unit casing and all structural members and rails shall be fabricated of steel and painted
to meet ASTM B117 500-hour salt spray test. The control enclosure and unit panels
shall be corrosion resistant painted before assembly. Unit shall have condenser coil
grilles and base frame grilles.
H.
Advanced microprocessor based control system.
1.
2.
Control Panel: Multi-point power supply to factory-mounted disconnect switches
with through-the-door handles, for each compressor circuit, no circuit breakers.
A NEMA Type 3R weatherproof control panel shall contain the unit control
system, control interlock terminals and field-power connection points. Hinged
control panel access doors shall be tool-lockable. Barrier panels shall be
provided to protect against accidental contact with line voltage when accessing
the control system. Fan motors shall have inherent overload protection xand
compressor motors shall have three-phase motor overload protection. Factorysupplied power components shall include
a.
Individual contactors and circuit breakers for fan motors,
b.
Circuit breakers and factory-mounted transformers for each control-circuit,
c.
Unit power terminal blocks for connection to remote disconnect switch.
d.
Terminals for power supply to the evaporator heater circuit.
e.
Fan motors shall have inherent overload protection and compressor motors
shall have three-phase motor overload protection.
f.
Single-Point Connection to Disconnect Switch
g.
A 10.0 amp, 115-volt convenience outlet shall be mounted inside the
control panel on all 60-Hz units.
Control system starting components shall include solid-state start timer.
AIR- COOLED CHILLER REQUIREMENTS
LANIER MIDDLE SCHOOL NEW AIR-COOLED CHILLER PURCHASE
3.
The control logic shall be designed to maximize operating efficiency and
equipment life with protections for operation under unusual conditions and to
provide a history of operating conditions. The system shall intelligently stage the
unit to sustain leaving water temperature precision and stability while minimizing
compressor cycling.
4.
Equipment protection functions controlled by the microprocessor shall include
high discharge pressure, loss of refrigerant, loss of water flow, freeze protection,
and low refrigerant pressure. User controls shall include:
5.
a.
Auto/stop switch.
b.
Chilled water set-point adjustment, anti-recycle timer, digital display with
water temperature and set point, operating temperatures and pressures,
and diagnostic messages.
The following features and functions shall be included:
a.
Durable liquid crystal display (LCD) screen type, having minimum four 20character lines with 6 key input pad conveniently mounted on the unit
controller. Default language and units of measure shall be English and I-P
respectively. Messages shall be in plain English. Coded messages, LED
indicators and LED displays are not acceptable.
b.
Separate control section and password protection for critical parameters.
c.
Remote reset of chilled water temperature using a 4-20mA signal.
d.
Soft-load operation, protecting the compressor by preventing full-load
operation during the initial chilled fluid pull-down period.
e.
Non-volatile program memory allowing auto-restart after a power failure.
f.
Recording of safety shutdowns, including date-and-time stamp, system
temperatures and pressures. A minimum of six previous occurrences shall
be maintained in a revolving memory.
g.
Start-to-start and stop-to-start cycle timers, providing
compressor off time while maximizing motor protection.
h.
Lead-lag compressor staging for part-load operation by manual selection
or automatically by circuit run hours.
i.
Discharge pressure control through intelligent cycling of condenser fans to
maximize efficiency.
j.
Pro-active compressor unloading when selected operating parameters
exceed design settings, such as high discharge pressure or low evaporator
pressure.
AIR- COOLED CHILLER REQUIREMENTS
minimum
LANIER MIDDLE SCHOOL NEW AIR-COOLED CHILLER PURCHASE
1.3
k.
Diagnostic monitoring of unit operation, providing a pre-alarm signal in
advance of a potential shutdown, allowing time for corrective action.
l.
115-volt convenience outlet mounted in control panel for all 60-Hz units
Chilled water set-point adjustment, anti-recycle timer, digital display with
water temperature and set point, operating temperatures and pressures,
and diagnostic messages.
m.
Ground fault relay.
FACTORY MOUNTED OPTIONS
A.
Non-Fused Disconnect
B.
GFI Convenient Outlet
C.
Low Ambient Controls
D.
High Ambient Controls and Controls Box Fan
E.
Hot Gas Bypass with Discharge Line Service Isolation Valves
F.
Compressor Service Isolation Valves
G.
Condenser Coil Security Grilles Comply with AMCA 500-D testing for damper rating.
1.4
CHILLER MOUNTED OPTIONS
A.
Chilled Water Flow Switch
B.
Vibration Isolation Pads
1.5
WARRANTY
A.
5 Year Compressor Parts Warranty
B.
1 Year Complete Parts Warranty
C.
1 Year Complete Labor Warranty
D.
Factory Start up
AIR- COOLED CHILLER REQUIREMENTS
1.803 Tobacco-Free Environment
Policy
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Original Adoption: 06/01/87
Revision Dates: 03/18/91, 04/19/93, 07/01/93; 07/10/06
Effective Date: 07/10/06
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
I. PURPOSE
To provide a safe and healthy environment for all employees, students, and visitors and to serve as a
positive example to all students concerning the use of tobacco.
II. SCOPE
This policy applies to all employees, students, and visitors.
III. POLICY STATEMENT
The Board of Education recognizes that smoking represents a major health and safety hazard which can
have serious consequences for the smoker and nonsmoker alike. The Board believes that the health and
wellness of employees, students, and visitors are of primary importance; therefore, smoking and/or the use
of all tobacco products, including smokeless tobacco, are prohibited in all Board of Education buildings1
(schools and other facilities); in any public seating areas, including but not limited to, bleachers used for
sporting events, or public restrooms2; and in all vehicles, owned, leased or operated by the district at all
times.
Signs will be posted throughout the district's facilities to notify students, employees and all other persons
visiting the school that the use of tobacco and tobacco products is forbidden.1 A Smoking is prohibited by
law in seating areas and in restrooms sign shall be prominently posted for elementary or secondary school
sporting events (including at each ticket booth).2
Any student who possesses tobacco products shall be issued a citation by the school principal.3
Parents and students shall be notified of this citation requirement at the beginning of each school year.
IV. RESPONSIBILITY
A. Employees, students, and visitors are responsible for abiding by the provisions of this policy.
B. Senior management and supervisors are responsible for ensuring that areas over which they have
control are aware of the policy and are in compliance.
C. Principals are responsible for notifying parents and students of this policy.
D. The Superintendent or designee, in cooperation with the juvenile court and the local police/sheriff's
department, is responsible for developing procedures for issuance of citations.
E. The Superintendent is responsible for ensuring that this policy is followed.
___________________
___________________
Legal Reference:
1. Section 1042 of the Environmental Tobacco Smoke/Pro-Children Act of 1994
2. TCA 39-17-1604(6)(10); TCA 39-17-1605; TCA 39-17-1606
3. TCA 39-17-1505
Cross Reference: