Installation Of Outdoor Unit - INVENTOR R2FO-50 User Manual

Installation of Outdoor Unit

1. Connect charging hose of to charge nozzle. (both cores of
gas and liquid valves should be shut down tightly.)
2. Connect joint of charging hose to vacuum pump.
3. Fully open low-pressure valve(Lo) of manometer.
4. Make vacuum pump operate for 15 min above.Close low-
pressure valve(Lo) to stop vacuum pump after confirmation
5
of -1.0X10 pa(-76cmHg) at manometer .Then check if there
is air in the pipe(keep for 2 min to see if indicated needle of
manometer returns).If there is ,re-operate the vacuum pump
after restoration.
5. Remove charging hose from gas valve.
6. Fully open the cores of gas valve and liquid valve.
7. Tighten bonnet of gas valve and liquid valve and nut of charge
nozzle.(As shown in Fig.19)
Outdoor condensation drainage (Heat pump type only)
When the unit is heating, the waste water formed in the outdoor
unit can be drained out reliably through the drain hose.
Install the outdoor drain elbow in the Φ25
Installation:
on the base plate as below, 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.
Coat soap water at the
there is air bubble at this position,it should leak.(As shown in Fig.20).Leakage detector,
if possible,can be used.
When using vacuum pump
Leakage detection
gap between connection pipes to see if there is any
Leakage detection spot of indoor unit
Leakage detection spot of outdoor unit
Fig.20
-76cmHg
Low-pressure
valve (Lo) Open
Gas valve
Liquid valve
34
Manometer
High-pressure
valve (Hi) closed
Charging hose
Vacuum
pump
Fig.19
Base plate of
outdoor unit
Outdoor drain elbow
leakage.If