2
6
Connecting the pipe
1.Remove the flare nuts from the cut - off valves of the outdoor unit.
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 ser-
vice port nut.
Air purging and leakage test
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 mois-
ture 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)
1.Remove the nuts of one-way valve.
2.Evacuate from the one-way valve with a vacuum pump until the
vacuum meter is 5 Torr, and keep up evacuating 1 hour or more.
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.
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:
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.
Install the outdoor unit
Summary of Contents for ASH-28AT
Page 1: ...USER S MANUAL ASH 28AT TITAN SERIES ...
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