13
8.4 how to handle stop valve?
● The stop valves for indoor-outdoor connecting piping are
closed at shipment from the factory. Make sure to keep the
valve open during operation. The names of parts of the stop
valve are shown as following:
1 Service port
2 Shut-off valve
3 Field piping
connection
4 Valve cover
Chart 22
● Since the side boards may be deformed if only a torque
wrench is used when loosening or tightening flare nuts, so
always lock the shut-off valve with a wrench and then use a
torque wrench.
Do not place wrenches on the valve cover! This may result in
a refrigerant leak.
Chart 23
1 Spanner
2 Toerque wernch
● For cooling operation under low ambient temperature or
any other operation under low pressure, apply silicon pad or
similar to prevent freezing of the gas stop valve flare nut.
Chart 24
Silioon sealign pad
(Make sure there is no gap)
8.5 how to handle the valve cover?
● The valve cover is sealed where indicated by the arrow:
● After operating the valve, be sure to tighten the valve cover properly.
● Check for refrigerant leakage after tightening the cap.
Chart 25
Tightening torque
Liqurd pipe
13.5~16.5N.m
Gas pipe
22.5~27.5N.m
Table
7
8 refrIGerANT pIpING
