Alen AMS12 12000 BTU AND 13.5 SEER Installation Manual - Page 14

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AIR PURGE AND TEST OPERATION

1) Air Purge

Choose Purge method from the table.
Connective Pipe Length
less than 16.4 feet
16.4 ~ 32.8 feet
Make sure the R410A refrigerant added into air conditioner is liquid form.
When relocating the unit to another place, perform evacuation, with a
vacuum pump.
CAUTION IN HANDLING THE PACKED vALvE
Open the valve stem until it hits against the stopper. Do not try to open it further.
Securely tighten the valve stem cap with a spanner or the like.

Refrigerant Gas

c
ondensor
(o
utdoor
u
nit
Packed Valve
Air Purging Method
Use vacuum pump
Use vacuum pump
Valve stem cap tightening torque.
Liquid pipe side
Gas pipe side
)
O 0.5 inches (>10000Btu/h)
A
O 0.38 inches (<9000Btu/h)
O 0.25 inches
B
O 1/4"
O 3/8"
e
vaporator
(i
) u
ndoor
nit
C
D
Packed valve
Half union
13
Additional amount of
refrigerant to be charged
N/A
0.32 ounces per foot for each foot
beyond 16.4 feet (5 meters).
11.57 ft lbs
(160kgf.cm
21.7 ft lbs
(300kgf.cm)
Flare nut
Stopper
Valve stem
Cap