TABLE
UNIT | LIQUID |
| VAPOR |
| VAPOR (LONG LINE) | |||
SIZE | Connection Diameter |
| Tube Diameter | Connection Diameter |
| Tube Diameter | Connection Diameter | Tube Diameter |
018, 024 | 3/8 |
| 3/8 | 5/8 |
| 5/8 | 5/8 | 3/4 |
030, 036 | 3/8 |
| 3/8 | 3/4 |
| 3/4 | 3/4 | 7/8 |
042, 048 | 3/8 |
| 3/8 | 7/8 |
| 7/8 | 7/8 | |
060 | 3/8 |
| 3/8 | 7/8 |
| 7/8 | ||
|
|
|
|
|
|
|
|
|
NOTES:
1.Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult Residential
2.Do not apply
For
If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system.
A.Outdoor Unit Connected to
Outdoor unit contains correct
B. Refrigerant Tubing
WARNING: The unit cabinet must have an uninter- rupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. Failure to follow this warning can result in an electric shock, fire, or death.
B. Connect Ground and Power Wires
Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 4.
Connect tubing to fittings on outdoor unit vapor- and liquid- service valves. (See Table 1.) Use
C. Sweat Connection
CAUTION: To avoid valve damage while brazing, ser- vice valves must be wrapped in a
Service valves are closed from factory and ready for brazing. After wrapping service valve with a wet cloth, tubing set can be brazed to service valve using either
DISCONNECT
PER N. E. C. AND/OR LOCAL CODES
FIELD POWER
WIRING
FIELD GROUND
WIRING
CONTACTOR
GROUND
LUG
A91056
tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints.
VII. MAKE ELECTRICAL CONNECTIONS
WARNING: To avoid personal injury or death, do not supply power to unit with compressor
Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on
NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See
NOTE: Use copper wire only between disconnect switch and unit.
NOTE: Install
A. Route Ground and Power Wires
Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into
Fig. 4—Line Power Connections
C. Connect Control Wiring
Route 24v control wires through
Use No. 18 AWG
All wiring must be NEC Class 1 and must be separated from incoming power leads.
Use furnace transformer,
NOTE: Use of available 24v accessories may exceed the mini- mum 40va power requirement. Determine total transformer load- ing and increase the transformer capacity or split the load with an accessory transformer as required.
→ IMPORTANT: Check factory wiring and wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc.
VIII. COMPRESSOR CRANKCASE HEATER
When equipped with a crankcase heater, furnish power to heater a minimum of 24 hr before starting unit. To furnish power to heater only, set thermostat to OFF and close electrical disconnect to outdoor unit.
A crankcase heater is required if refrigerant tubing is longer than 50 ft. Refer to Residential