Install the outdoor unit
Connecting the pipe
1.Remove the flare nuts from the
2.Align the center of the piping flare with the relevant valve, and screw in the flare nut about 3~4 turns by hand.
3.Tighten the flare nut with spanner and torque wrench. 4.Remove the valve caps of the gas valve and liquid valve
and the service port nut.
Air purging and leakage test
Liquid valve gas valve
screw driver |
valve cap |
For the air conditioners with R22 refrigerant, as the below step: 1.Loosen the valve stem of the liquid valve with a hex wrench. 2.Push the check valve core of the gas valve to discharge
air and moisture remaining in the refrigerant system. 3.Stop pushing the valve core as soon as the refrigerant
starts to be discharged, and reinstall the service port nut. 4.Open the liquid valve and gas valve entirely (shown in
Fig.9).
5.Tighten the valve caps and test leakage at all joints of the piping (both indoor and outdoor) with liquid soap or leak detector.
6.If possible, discharge air and moisture remaining in the refrigerant system with a vacuum pump.(shown in Fig.10) For the air conditioners with R407C refrigerant, as the below
step:
1.Remove the nuts of
2.Evacuate from the
3.Turn off the valve and fighten the nuts. 4.Fully open valves. (Fig.9)
5.Tighten the nuts. then check whether there is gas leaking out.
*Moisture inside pipeline must be less 200 PPm.
Fig.9
Manifold gauge
Nut |
Vacuum pump
Liquid tube
Gas tube
Fig.10
2 7 |
Outdoor condensation drainage
(Heat pump type only)
When the unit is heating or defrosting, the waste water formed in the outdoor unit can be drained out reliably through the drain hose.
Installation:
Fig.11
Install the outdoor drain elbow in the 
25 hole on the base plate as shown in Fig.11, and joint the drain hose to the elbow, so that the waste water formed in the outdoor unit can be drained out to a proper place.
Base plate |
Outdoor drain elbow
