Manual

Air purging with vacuum pump
1. Check that each tube(both liquid and gas side tubes) between the indoor and
outdoor units have been properly connected and all wiring for the test run has
been completed. Remove the service valve caps from both the gas and the
liquid side on the outdoor unit. Note that both the liquid and the gas side
service valves on the outdoor unit are kept closed at this stage.
2. When relocating the unit to another place, perform evacuation using vacuum
pump.
3. Pipe length and refrigerant amount:
Connective Air Additional amount of
pipe length purging refrigerant to be charged
Less than 25' Use vacuum pump.
25'~65.6'
25'~98.4'
Use vacuum pump.
Use vacuum pump.
R410a: 1.058ozs (Pipe length-25')
(.<12000 Btu's)
R410a: 0.705ozs (Pipe length-25')
(=18000 Btu's)
R410a: 1.058ozs (Pipe length-25')
(=21500 Btu's)
Caution in handling the packed valve integrated in the outlets of
outdoor unit.
1. Operation of opening packed valve: Open the valve stem until it hits against
the stopper. Do not try to open it further.
2. Operation of closing packed valve: Securely tighten the valve stem with a speciaJ
tool. Then securely tighten the valve stem cap with a spanner or the like. Refer to
tightening torque table in page 17 for valve stem cap tightening torque
Note: There is a charging port integrated in the low side outlet, but not in the
high side oufleL The low side outlet is shown in the sketch map below.
nut
Refrigerant
Outdoor unit Indoor unit
,¢
Packed valve Half union
Valve body
Charge port
Valve
Cap
Stopper