Guide Specifications - 38Aqs012,016 Outdoor Units - Carrier 38AQS008 Product Data

Guide specifications —
38AQS012,016 outdoor units
Split-System Heat Pump Outdoor Unit
HVAC Guide Specifications — Section 15678
Size Range: 111,000 to 164,000 Btuh Heating
10 and 15 Nominal Tons Cooling
Carrier Model Number: 38AQS012,016
Part 1 — General
1.01 SYSTEM DESCRIPTION
A. Outdoor-mounted, electrically controlled, air-cooled
split system heat pump unit utilizing a reciprocating-
type compressor for refrigerant compression. Unit
shall function as the outdoor component of an air-
to-air electric heat pump system.
B. Unit can be used in a refrigerant circuit to match
Packaged Air Handling Unit(s), Section 15859, for
matched systems approved by manufacturer.
1.02 QUALITY ASSURANCE
A. Unit performance shall be certified in accordance
with ARI Standards 210/240, 270, and 340/360
latest versions.
B. The refrigerant coil shall be designed and tested in
accordance with ASHRAE 15 Safety Code for
Mechanical Refrigeration.
C. Unit shall be constructed in accordance with ETL
and ETL, Canada, regulations and shall carry the
ETL and ETL, Canada, labels of approval.
D. Coil leak testing shall be at 350 psig air pressure
with the coil submerged in water. After testing, the
coil shall be dehydrated and charged with dry air.
E. Unit shall be manufactured in a facility registered to
the ISO 9002 manufacturing quality standard.
F. Unit casing shall be capable of withstanding
500-hour salt spray exposure per ASTM B117
(scribed specimen).
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be stored and handled in accordance with
unit manufacturer's instructions.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Outdoor-mounted, air-cooled split system heat
pump unit shall be suitable for on-the-ground or
rooftop installation on a full level pad or on raised
pads at each support point. The unit shall consist of
a semi-hermetic
assembly, a fin-tube coil, propeller-type fans, fan
motors, refrigerant controls, and a control box. All
components shall be factory assembled as a single
unit. A holding charge of R-22 shall be included.
refrigerant compressor/motor
B. Unit Cabinet:
1. Cabinet shall be constructed of galvanized steel,
bonderized, and finished with baked enamel.
2. Fan venturi housings and guards shall be assem-
bled on the unit.
3. A removable panel or hinged door shall be pro-
vided for access to the compressor and control
compartments.
4. A refrigerant accumulator with a fusible plug
relief shall be installed in the cabinet.
C. Fans:
1. Propeller fans shall be directly driven by
weather-proof motors. Fan motor bearings shall
be permanently lubricated. The lead fan motor
shall be suitable for application with accessory
head pressure control.
2. Fans shall be arranged for vertical up-blast
discharge.
D. Compressor/Motor Assembly:
1. Semi-hermetic, reciprocating-type compressor
shall be complete with a motor and oil pump all
on a single polished crankshaft.
2. Motor stator winding shall be NEMA Class F
rated, suitable for operation in a refrigerant
atmosphere.
3. Oil pump shall be automatically reversible.
4. Casing shall include suction and discharge shut-
off valves, capacity control device, oil level con-
trol orifice, oil-pressure regulating valve, and a
crankcase oil heater.
5. Suction and discharge valves shall be Swedish
steel, reed-type flapper valves.
6. Pistons and connecting rods shall be high-
density aluminum alloy castings. Pistons shall be
equipped with automotive-type compression
and oil scraper rings.
7. Pump-end bearing shall be cast aluminum.
Motor-end bearing shall be steel-backed, tin-
base babbit type.
8. Compressor assembly shall be installed on
spring vibration isolators.
E. Coil:
Coil shall have copper tubes, aluminum plate fins
(copper fins optional), and galvanized steel tube
sheets. The fins shall be bonded to tubes by mechan-
ical expansion. Coil shall be circuited for subcooling
during Cooling mode operation.
39