B.
Inspect Equipment
File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating label on unit service panel. (See
Fig. 2.) It contains information needed to properly install unit. Check rating label to be sure unit matches job specifications.
PROCEDURE 2—INSTALL ON A SOLID, LEVEL MOUNTING PAD
If conditions or local codes require the unit be attached to pad, tie-down bolts should be used and fastened through knockouts provided in unit
base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole locations.
When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 30-in. clearance to service end of unit
and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a
distance of 24 in. between units. Position so water, snow, or ice from roof or eaves cannot fall directly on unit.
On rooftop applications, locate unit at least 6 in. above roof surface. Place unit above a load-bearing wall and isolate unit and tubing set from
structure.
Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes governing rooftop
applications.
PROCEDURE 3—REPLACE INDOOR REFRIGERANT FLOW CONTROL DEVICE, IF REQUIRED
Check indoor coil piston to see if it matches the required piston shown on unit rating label. If it does not match, replace indoor coil piston with
piston shipped with unit. The piston shipped with outdoor unit is correct for any approved indoor coil combination.
PROCEDURE 4—MAKE PIPING CONNECTIONS
Outdoor units may be connected to indoor sections using accessory tubing package or field-supplied refrigerant grade tubing of correct size and
condition. For tubing requirements beyond 50 ft, consult Long-Line Application Guideline which is available at your local distributor.
NOTE:
In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment.
A.
Installation Recommendations
1. Locate the unit away from windows.
2. Ensure that vapor and liquid line diameters are appropriate to the capacity of the unit. (See Table 1.)
3. Run refrigerant tubes as directly as possible by avoiding unnecessary turns and bends.
4. Leave some slack between the structure and the unit to absorb vibration.
5. When passing refrigerant tubes through the wall, seal the opening with RTV or other pliable silicon-based caulk. (See Fig. 3.)
6. Avoid direct lineset contact with water pipes, ductwork, floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with the tubing. (See Fig.
3.)
8. Ensure that tubing insulation is pliable and completely surrounds the vapor line.
9. When necessary, use hangar straps which are 1 in. wide and conform to the shape of the tubing insulation. (See Fig. 3.)
Fig. 2—Unit Reference Drawing
UNIT SIZE
A
B
C
D
E
In.
In.
In.
In.
In.
024
30
23-1/2
6-1/2
10
5/8
030, 036
30
23-1/2
6-1/2
10
3/4
042–060
30
23-1/2
6-1/2
10
7/8
A92490
UNIT RATING
PLATE
INDIANAPOLIS IN
46206
313948-401
REV A
MAX CKT-BKR
MAX HACR CKT-BKR
MAX FUSE
TYPE
MINIMUM CIRCUIT AMPS
LO
HI
DESIGN/TEST PRESSURE GAGE
FLA
HZ
PH
VOLTS AC
LRA
RLA
HZ
PH
VOLTS AC
MAX
PH
LBS
PISTON
MODEL
PROD
SERIAL
N/A
USA
N/A
CANADA
MAX OVERCURRENT PROTECTIVE DEVICE
kPa
kPa
PSI
PSI
FAN MOTOR
COMPRESSOR
SUITABLE FOR OUTDOOR USE
MIN
HZ
Kg
VOLTS
POWER SUPPLY
ID
OD
FACTORY CHARGED R-22
®
®
PERMISSIBLE VOLTAGE AT UNIT
CARRIER CORP
AIR
DISCHARGE
AIR
DISCHARGE
AIR IN
AIR IN
B
AIR IN
D
C
AIR DISCHARGE
3
/
8
″
DIA
LIQUID TUBE CONN
FIELD POWER SUPPLY CONN
7
/
8
″
DIA HOLE WITH
1
1
/
8
″
DIA KNOCKOUT
AND 1
3
/
8
″
DIA KNOCKOUT
AIR IN
A
FIELD CONTROL POWER
SUPPLY CONN
7
/
8
″
DIA HOLE
E
DIA SERVICE LINE CONN
TIEDOWN KNOCKOUTS
(2) PLACES
—2—
