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Flare nut
Valve body
Cap
Valve stem
Fig.
4
.
2
11. Remove the charge hose from the service port.
12. Using hexagonal wrench, fully open both the high pressure and low pressure valves.
13. Tighten valve caps on all three valves (service port, high pressure, low pressure) by hand. You may
tighten it further using a torque wrench if needed.
C
Open valve stems gently
When opening valve stems, turn the hexagonal wrench until it hits against the stopper.
Do not try to force the valve to open further.
C
Note on adding refrigerant
Some systems require additional charging depending on pipe lengths. The standard
pipe length varies according to local regulations. For example, in North America, the
standard pipe length is 7.5m (25’). In other areas, the standard pipe length is 5m (16’).
The additional refrigerant to be charged can be calculated using the following formula:
4.
Air evacuation
65 / 120 EN
Split-type room air conditioner / Installation Manual