LANIER MIDDLE SCHOOL AIR-COOLED CHILLER PURCHASE Chiller bid 1196.pdf · scroll compressor packaged chiller in the quantity and size specified. ... York, and Trane may be ... LANIER

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

SUMMARY 01100 - 1

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, direct-expansion 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 - 2

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 - 3

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

LANIER MIDDLE SCHOOL NEW AIR-COOLED CHILLER PURCHASE

AIR- COOLED CHILLER REQUIREMENTS

AIR- COOLED

PART 1 - GENERAL

CHILLER REQUIREMENTS

1.1 SUMMARY

A. 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

1.2 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. The unit shall be equipped with ground fault protection.

D. 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



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. 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. Factory-supplied 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.

2. Control system starting components shall include solid-state start timer.



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:

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.

5. The following features and functions shall be included:

a. Durable liquid crystal display (LCD) screen type, having minimum four 20-character 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 minimum 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.



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.

1.3 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

1.803 Tobacco-Free Environment Policy______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Original Adoption: 06/01/87 Effective Date: 07/10/06Revision Dates: 03/18/91, 04/19/93, 07/01/93; 07/10/06______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

I. PURPOSETo provide a safe and healthy environment for all employees, students, and visitors and to serve as apositive example to all students concerning the use of tobacco.

II. SCOPEThis policy applies to all employees, students, and visitors.

III. POLICY STATEMENTThe Board of Education recognizes that smoking represents a major health and safety hazard which canhave serious consequences for the smoker and nonsmoker alike. The Board believes that the health andwellness of employees, students, and visitors are of primary importance; therefore, smoking and/or the useof 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 forsporting events, or public restrooms2; and in all vehicles, owned, leased or operated by the district at alltimes.

Signs will be posted throughout the district's facilities to notify students, employees and all other personsvisiting the school that the use of tobacco and tobacco products is forbidden.1 A Smoking is prohibited bylaw in seating areas and in restrooms sign shall be prominently posted for elementary or secondary schoolsporting events (including at each ticket booth).2

Any student who possesses tobacco products shall be issued a citation by the school principal.3Parents 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'sdepartment, is responsible for developing procedures for issuance of citations.

E. The Superintendent is responsible for ensuring that this policy is followed.

___________________ ___________________Legal Reference: Cross Reference:1. Section 1042 of the Environmental Tobacco Smoke/Pro-Children Act of 19942. TCA 39-17-1604(6)(10); TCA 39-17-1605; TCA 39-17-16063. TCA 39-17-1505