Attachment 4- University Park Renovation Cold Room Specification.pdf

University Park PSWMRU Renovation USDAPSWMRU

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COLD-STORAGE ROOMS (PREFABRICATED PANEL TYPE)

02/16, CHG 1: 08/18

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AIR-CONDITIONING, HEATING AND REFRIGERATION INSTITUTE (AHRI)

AHRI 365 (2009) Commercial and Industrial Unitary Air-Conditioning Condensing Units

AHRI 420 (2008) Performance Rating of Forced-Circulation Free-Delivery Unit Coolers for Refrigeration

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ANSI/ASHRAE 15 & 34 (2013) ANSI/ASHRAE Standard 15-Safety Standard for Refrigeration Systems and ANSI/ASHRAE Standard 34-Designation and Safety Classification of Refrigerants

ASHRAE 189.1 (2014) Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC (2021) International Building Code

NSF INTERNATIONAL (NSF)

NSF/ANSI 7 (2019) Commercial Refrigerators and Freezers

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-R-43900 (1985; Rev B; Notice 1; CANC Notice 2) Refrigerators, Freezers, Prefabricated, Mechanical, Commercial, Walk-In

U.S. DEPARTMENT OF ENERGY (DOE)

Energy Star (1992; R 2006) Energy Star Energy Efficiency Labeling System (FEMP)

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

CID A-A-52128 (Basic) Shelving, Storage, Stationary and Mobile, Food Storage

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UNDERWRITERS LABORATORIES (UL)

UL 412 (2011; Reprint Sep 2013) Standard for Refrigeration Unit Coolers

UL 427 (2011; Reprint Feb 2014) Refrigerating Units

UL 1995 (2015) UL Standard for Safety Heating and Cooling Equipment

1.2 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Cold-Storage Rooms; G DO

SD-03 Product Data

Cold-Storage Rooms; G DO

Shelves; G RO, S

Refrigeration Equipment; G DO,S

Energy Star Label For Refrigeration Equipment; S

SD-06 Test Reports

Start-Up and Initial Operational Tests; G RO

Flame Spread and Smoke Index; G RO

SD-08 Manufacturer's Instructions

Cold-Storage Rooms

Refrigeration Equipment

SD-10 Operation and Maintenance Data

Cold-Storage Rooms, Data Package 1; G RO

Refrigeration Equipment, Data Package 2; G RO

SD-11 Closeout Submittals

Posted Operating Instructions for Refrigeration Equipment; G RO

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1.3 REFRIGERATION PIPING

Provide per manufacturer's recommendations.

PART 2 PRODUCTS

2.1 COLD-STORAGE ROOMS

2.1.1 Requirements

MIL-R-43900, factory fabricated type insulated enclosure and environmental control system with the following requirements:

a. Type: Manufactured panelized field-assembled modular construction consisting of 4" thick, minimum, insulated walls, roof, and floor.

b. Size: As indicated on the drawings. Field verify all available clearances, confirm all dimensions, and submit detailed shop drawings for review prior to ordering of materials.

c. Component panels shall be constructed with interior and exterior aluminum skins bonded together by the foam insulattion.

Panels shall have integral tongue and groove profile joints with a flexible vinyl gasket on the interior and exterior of all toungue edges, with no metal or wood components, formed into the foam insulation for assembling the component panels together to form the insulated enclosure assembly.

Gaskets shall be NSF certified, reisitant to damage from oils and detergents, and shall form a water-tight and air-tight seal between each component panel.

Provide specialized modular panel units at each corner to provide level floors and ceilings, as well as plumb walls, with perpindicular joints at each corner of the enclosure assembly.

The exposed surfaces of all wall and ceiling panels shall be 0.100 inches thick smooth aluminum, painted white.

The top exposed surface of all floor panels shall be 0.125 inches thick diamond tread mill finish aluminum. The bottom exposed surface of all floor panels shall be 0.100 inches thick mill finish smooth aluminum.

All walls, floors, and ceiling must meet or exceed R-25 insulation value when tested per ASTM C518.

d. Entrance door must be swing type with left-handed openings.

e. Refrigeration systems must be the remote type.

f. Electrical characteristics.

g. Preservation and packing must be commercial grade.

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h. Recording thermometer.

i. Temperature alarm system with connector for remote temperature alarm interlocked with the alarm notification system.

j. Interior lighting.

k. Outdoor weather cap.

l. Outdoor condensing unit cover.

m. Remotely mounted chemical dryer unit, located indoors but remotely from the insulated enclosure and connected by ductwork.

n. Condensing unit outdoor controls for operation down to 0 degrees F ambient temperature.

o. Foam plastic insulation flame spread and smoke index limits in accordance with requirements in ICC IBC Chapter 26 Plastic.</LST>

p. Foam plastic insulation shall comply with all sustainability requirements for this project, to include but not be limited to low VOC content requirements and greenhouse gas reduction requirements, in accordance with Specification 01 33 29.

2.2 SHELVES

CID A-A-52128, stationary type, slotted shelves, stainless steel construction, 18 to 20 inches front to rear, by 48 inches long, by 58 to 66 inches high, except where indicated otherwise.

2.3 REFRIGERATION EQUIPMENT

Provide refrigeration equipment as per manufacturer's recommendations that meets requirements of the drawings and design. Design refrigerant equipment for remote installation. Design units for 16 to 18 hour operation at the indicated interior temperature in 72 degree F ambient temperature. Provide equipment with capacities, air delivery, and dimensions indicated. The contractor shall to the best of their ability p rovide refrigeration equipment that is Energy Star labeled. Provide data identifying Energy Star label for refrigeration equipment.

2.3.1 Remote Condensing Units

Factory fabricated and rated in accordance with UL 1995 and AHRI 365 (I-P).

Provide with motor, air-cooled condenser, receiver, compressors, mounted on a common base. Provide accessible hermetic type compressors.

Provide in accordance with ANSI/ASHRAE 15 & 34 and ASHRAE 189.1. Provide preassembled remote condensing unit assembly with all necessary components factory installed and wired including electrical box, time clock, drier, sight glass, winter control and crankcase heater, enclosed compressor housing, and compressor rack. Set chiller to operate at 0 degrees F.

Mercury is prohibited for use in thermometers. Chlorofluorocarbon (CFC) based refrigerants are prohibited.

2.3.2 Evaporators

Factory fabricated and rated in accordance with UL 412 and AHRI 420.

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Provide forced convection, unit cooler type, made to be suspended from the ceiling panels, with forced air discharged parallel to the ceiling.

Provide with air circulating motor, multifin tube-type coil and grille assembled within a protective housing. Air circulation motors must be lifetime sealed. The entire unit cooler assembly must be accessible for cleaning. Provide a drip pan and drain connection..

2.3.3 Self-Contained Refrigerant Systems

Factory fabricated in accordance with UL 427 for top-wall mounting.

Systems to include a condensing unit mounted on the exterior and a forced air evaporator mounted on the interior directly opposite.

Provide in accordance with ANSI/ASHRAE 15 & 34 and ASHRAE 189.1. Provide condensing unit assembly with all necessary components factory installed and wired including electrical box, time clock, drier, sight glass, winter control and crankcase heater, weatherized cover, and compressor rack.

Set chiller to operate at 40 degrees F Mercury is prohibited for use in thermometers. Chlorofluorocarbon (CFC) based refrigerants are prohibited.

2.4 HEATING CABLE

Provide condensate drain lines and drains below freezer floors with electric heating cable, thermostatically controlled to maintain 40 degrees F at zero flow rate. Provide 26 AWG cable size and 4 watts per linear foot.

PART 3 EXECUTION

3.1 INSTALLATION

Provide in accordance with NSF/ANSI 7, ANSI/ASHRAE 15 & 34, ASHRAE 189.1, and with the manufacturer's printed instructions. Submit installation instructions covering both assembly of the rooms and installation of the refrigeration equipment, for approval by the Contracting Officer's Representative prior to starting installation. Include equipment start-up and initial operation as well as evacuation and charging procedures for refrigeration equipment in the installation instructions.

3.2 MANUFACTURER'S FIELD SERVICES

3.2.1 Services

Provide manufacturer's representatives who are trained to perform the services specified. Representatives to provide training services on the following procedures:

a. Erection, alignment, and testing.

b. Charging equipment with refrigerant and oil.

c. Starting equipment and training government personnel in proper care, operation, and maintenance.

3.3 TESTS

Perform the tests for each room and provide everything required. Notify the Contracting Officer 10 days before performing the tests. Perform tests in the presence of a manufacturer's representative.

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3.3.1 Start-Up and Operational Tests

Upon completion of equipment and refrigerant piping installation, start-up and operate systems for a period of not less than 24 hours. Place safety and automatic controls in operation and sequence. Record manufacturer's recommended readings hourly.

3.3.2 Performance Tests

Upon completion of operational tests, performance test systems for not less than 8 hours. Include the following information in the test report with conclusions regarding the adequacy of systems:

a. Time, dates and duration of tests.

b. Inside dry-bulb and wet-bulb temperatures maintained in each room during tests employing recording instruments calibrated before the tests.

c. Outside dry-bulb and wet-bulb temperatures obtained from recording instruments calibrated and checked hourly with a sling psychrometer.

d. Evaporator and condenser entering and leaving temperatures taken hourly with compressors in operation.

e. Make, model and capacity of each evaporator and condensing unit.

f. Voltmeter and ammeter readings for condensing units and evaporators.

3.4 OPERATING INSTRUCTIONS

Provide a framed and glassed control chart indicating layout of refrigeration systems, including piping, valves, wiring, and control mechanisms. Install control chart where directed. Submit printed instructions covering the maintenance and operation of refrigeration equipment. Tag shutoff valves in accordance with printed instructions.

Provide special tools necessary for repair and maintenance of the equipment. Submit data package 2 in accordance with Section 01 78 23

OPERATION AND MAINTENANCE DATA

3.5 CLEANING

Remove masking protection from stainless steel and other finished surfaces. Wash and clean floors, walls, shelves, and ceilings inside rooms and on exposed exterior surfaces. Clean glass, fixtures and fittings.

3.6 INSTRUCTING OPERATING PERSONNEL

Upon completion of the work and at a time designated by the Contracting Officer, provide instruction to Government personnel in the operation and maintenance of each refrigeration system. Duration of instruction must be a minimum of one 8-hour working day.

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