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 | 3/4 |
| 3/4 | 3/4 | 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 Long Line section of the Application Guideline.
2.Do not apply
Step 8—Make Piping Connections
Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid personal injury or death. Use all service ports and open all
If ANY refrigerant tubing is buried, provide a 6 in. vertical rise at service valve. Refrigerant tubing lengths up to 36 in. may be buried without further special consideration. For lengths above 36 in., consult your local distributor.
To prevent damage to unit or service valves observe the following:
•Use a brazing shield.
•Wrap service valves with wet cloth or use a
Outdoor units may be connected to indoor section using accessory- tubing package or
REFRIGERANT TUBING
Connect tubing to fittings on outdoor unit vapor- and liquid- service valves. (See Table 1.) Use
SWEAT CONNECTION
To avoid valve damage while brazing, service valves must be wrapped in a
1.Remove plastic retainer holding outdoor piston in liquid- service valve.
2.Locate adapter tube shipped with unit.
3.Install strainer in adapter tube and connect tube to service valve. (See Fig. 4.)
4.Connect refrigerant tubing to fittings on
5.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
Refrigerant tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints.
PISTON BODY
PISTON
PISTON
RETAINER
STRAINER
SWEAT/FLARE ADAPTER
A97512
Fig. 4—Liquid-Service Valve with Sweat-Adapter
Tube
FINAL TUBING CHECK
IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.
Step 9—Make Electrical Connections
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.
3