12
GUIDE SPECIFICATIONS
HORIZONTAL DISCHARGE OUTDOOR UNITS
Size Range: 3/4 and 1 Ton Nominal Cooling and Heating Capacity
Carrier Model Number:
38GXQ
PART 1 – GENERAL
1.01 System Description
A. Outdoor air-cooled split system compressor sections suitable
for on-the-ground, rooftop, wall hung or balcony mounting.
Units shall consist of a variable speed rotary compressor, an
air-cooled coil, propeller-type draw-through outdoor fan,
reversing valve, accumulator, metering devices, and control
box. Units shall discharge horizontally as shown on the
contract drawings. Units shall function as the outdoor
component of an air-to-air heat pump system.
B. Units shall be used in a refrigeration circuit matched to
duct-free heat pump fan coil units.
1.02 Agency Listings
C. Unit construction shall comply with ANSI/ASHRAE 15, latest
revision, and with NEC.
D. Units shall be evaluated in accordance with UL standard 1995.
E. Units shall be listed in CEC directory.
F. Unit cabinet shall be capable of withstanding 500-hour salt
spray test per Federal Test Standard no. 141 (method 6061).
G. Air-cooled condenser coils shall be leak tested at 573 psig.
1.03 Delivery, Storage, And Handling
Units shall be shipped in one piece and shall be stored and handled
per manufacturer s recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 – PRODUCTS
2.01 Equipment
A. General:
Factory assembled, single piece, air-cooled outdoor unit. Contained
within the enclosure shall be all factory wiring, piping, controls,
and compressor.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with baked-enamel finish on inside
and outside.
2. Unit access panel should 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. Fan 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
ball bearings. Motor shall be protected by internal thermal
overload protection.
3. Shaft shall have inherent corrosion resistance.
4. Outdoor fan openings shall be equipped with PVC
metal/mesh coated protection grille over fan.
D. Compressor
1. Compressor shall be fully hermetic variable speed rotary
type.
2. Compressor shall be Three phase, inverter driven.
3. Compressor shall be equipped with oil system, operating oil
charge, and motor.
4. Motor shall be NEMA rated class F, suitable for operation
in refrigerant atmosphere.
5. Compressor assembly shall be installed on rubber vibration
isolators.
6. The inverter and compressor shall be protected against over
temperature and over current.
E. Outdoor Coil:
Coil shall be constructed of Aluminum fins mechanically bonded
to seamless copper tubes, which are cleaned, dehydrated and
sealed.
F. Refrigerant Components:
Refrigerant circuit components shall include brass external liquid
line service valve with service gauge port connections, suction line
service valve with service gage connection port, service gage port
connections on compressor suction and discharge lines with
Schrader type fittings with brass caps, accumulator, reversing
valve.
G. Safeties:
Operating safeties shall be factory selected, assembled, and tested.
The minimum functions shall include the following:
1. Compressor discharge over temperature protection.
2. System low voltage protection.
3. Compressor overload protection.
4. Compressor over current protection.
5. IPM module protection.
H. Electrical Requirements:
1. Units shall operate on single-phase, 60 Hz power at 115 v.
for unit sizes 009-012.
2. Unit electrical power shall be a single point connection.
3. All power and control wiring must be installed per NEC
and all local electrical codes.
4. Units shall have high and low-voltage terminal block
connections.
I. Special Features (Field Installed):
1. Crankcase heater
2. Wind baffle (field fabricated)
38/
40GX
Q
