Instructions for Connecting Piping to
Indoor Unit
1.
Align the center of the two pipes that you will
connect. See
Fig. 5.7
.
Indoor unit tubing
Flare nut
Pipe
2.
Tighten the flare nut as tightly as possible by
hand.
3.
Using a spanner, grip the nut on the unit
tubing.
4.
While firmly gripping the nut on the unit
tubing, use a torque wrench to tighten the
flare nut according to the torque values in the
Torque Requirements
table below. Loosen
the flaring nut slightly, then tighten again.
Fig. 5.7
Fig. 5.8
Refrigerant
Piping
Connection
2.
Remove protective caps from ends of valves.
3.
Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible by
hand.
4.
Using a spanner, grip the body of the valve.
Do not grip the nut that seals the service
valve. (See
Fig. 5.10
)
USE SPANNER TO GRIP MAIN
BODY OF VALVE
Torque from tightening the flare nut can snap
off other parts of valve.
5.
While firmly gripping the body of the valve,
use a torque wrench to tighten the flare nut
according to the correct torque values.
6.
Loosen the flaring nut slightly, then tighten
again.
7.
Repeat Steps 3 to 6 for the remaining pipe.
Fig. 5.10
Instructions for Connecting Piping
to Outdoor Unit
1.
Unscrew the cover from the packed valve on
the side of the outdoor unit. (See
Fig. 5.9
)
Fig. 5.9
Valve cover
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