Product data

25
Condensing Units
HVAC Guide Specifications
Size Range: 1
1
/
2
to 3 Ton Capacity
Model Number: 38BNB, 38BNE
Part 1 — General
1.01 SYSTEM DESCRIPTION
A. Outdoor-mounted, air-cooled split system outdoor
section suitable for on-the-ground, rooftop, wall
hung, balcony, or under-deck installation. Unit shall
consist of a scroll or reciprocating compressor, an
air-cooled coil, propeller-type draw-thru outdoor
fans, full refrigerant charge, and control box. Unit
shall discharge air horizontally as shown on the con-
tract drawings. Units shall function as the outdoor
component of an air-to-air system.
B. Units shall be used in a refrigeration circuit matched
to a duct-free cooling fan coil unit.
1.02 QUALITY ASSURANCE
A. Unit construction shall comply with ANSI/ASHRAE
15, latest revision, and with the NEC.
B. Units shall be constructed in accordance with UL
standards.
C. Units shall be listed in the CEC directory.
D. Unit cabinet shall be capable of withstanding Federal
Test Standard No. 141 (Method 6061) 500-Hour
Salt Spray Test.
E. Air-cooled condenser coils shall be leak-tested at
350 psig air pressure.
1.03 DELIVERY, STORAGE, AND HANDLING
Units shall be shipped in one piece and shall be
stored and handled per unit manufacturer’s
recommendations.
1.04 WARRANTY
1 year parts, 5 year compressor.
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
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 min-
imal 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 draw air through the outdoor coil.
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
coated protection grille over fan and coil.
D. Compressor:
1. Compressor shall be fully hermetic reciprocat-
ing 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 com-
pressors 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. Heat pump reciprocating compressors shall be
equipped with crankcase heaters to minimize
liquid refrigerant accumulation in compressor
during shutdown and to prevent refrigerant dilu-
tion of oil.
5. Compressor assembly shall be installed on rub-
ber vibration isolators.
6. Compressors shall be single-phase as specified
on the contract drawings.
E. Outdoor Coil:
Coil shall be constructed of aluminum fins mechani-
cally bonded to internally enhanced, seamless cop-
per tubes which are cleaned, dehydrated, and
sealed.
F. Refrigeration Components:
Refrigerant circuit components shall include brass
external mixed phase line service valve, suction line
service valve with service gage connection port, ser-
vice gage port connections on compressor suction
and discharge lines with Schrader-type fittings with
brass caps, accumulator, pressure relief, and a full
charge of refrigerant.
G. Controls and Safeties:
Operating controls and safeties shall be factory
selected, assembled, and tested. The minimum con-
trol functions shall include the following:
1. Controls:
a. Automatic restart on power failure.
b. A time delay control sequence provided
through the fan coil board.
Guide specifications — outdoor unit