Specifications

Part 2 – Products
2.01 EQUIPMENT
A. General:
Factory assembled, single piece, air-cooled outdoor unit. Contained within the unit
enclosure shall be all factory wiring, piping, controls, compressor, full
(38BK009,012) or holding (38BK018,024 and 38QR) charge of R-22 refrigerant, and
special features required prior to field start-up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel, bonderized and coated with
a baked-enamel finish.
2. Unit access panels shall be removable with minimal screws and shall provide full
access to the compressor, fan, and control components.
3. Outdoor compartment shall be isolated and have an acoustic lining to assure quiet
operation.
C. Fans:
1. Outdoor fans shall be direct-drive propeller type, and shall discharge air
horizontally. Fans shall blow air through the outdoor coil (38BK018,024and
38QR only).
2. Outdoor fan motors shall be totally-enclosed, single-phase motors with class B
insulation and permanently-lubricated sleeve bearings. Motor shall be protected
by internal thermal overload protection.
3. Shaft shall have inherent corrosion resistance.
4. Fan blades shall be corrosion resistant and shall be statically and dynamically
balanced.
5. Outdoor fan openings shall be equipped with PVC coated protection grille over
fan and coil.
D. Compressor:
1. Compressor shall be fully hermetic reciprocation or scroll type.
2. Compressor shall be equipped with oil system, operating oil charge, and motor.
Internal overloads shall protect the compressor from overtemperature and
overcurrent. Scroll compressors shall also have high discharge gas temperature
protection if required.
3. Motor shall be NEMA rated class F, suitable for operation in a refrigerant
atmosphere.
4. Reciprocating compressors shall be equipped with crankcase heaters to minimize
liquid refrigerant accumulation in compressor during shutdown and to prevent
refrigerant dilution of oil.
5. Compressor assembly shall be installed on rubber vibrations isolators and shall
have internal spring isolation.
6. Compressors shall be single-phase or 3-phase as specified on the contract
drawings.
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