In the case of AJ
A54LALH
It is necessary to change a connection pipe diameter by using Reducer. ●
(1) Reducer must be brazed outside of the outdoor unit.
(2) Distance between 3-Way-Valve and Reducer ≤ 1m
(3) The part of Reducer do insulation processing after brazing .
Brazing
Reducer
(accessory)
Connection pipe (Gas)
(Pipe outside dia.:19.05mm (3/4 in.))
Connection pipe (Gas)
(Pipe outside dia.:15.88mm (5/8 in.))
1m or less
Example. Case of front connection
Handling precautions for the valves
z
Mounted part of Blank cap is sealed for protection. ●
Fasten blank cap tightly after opening valves. ●
Blank cap
[mm (in.)]
Tightening torque
[N·m]
6.35 (1/4) 20 to 25
9.52 (3/8) 20 to 25
12.70 (1/2) 25 to 30
15.88 (5/8) 30 to 35
19.05 (3/4) 35 to 40
Operating the valves
Use a hexagon wrench (size 4 mm). ●
Opening (1) Insert the hexagon wrench into the valve shaft, and turn it counterclockwise. ●
(2) Stop turning when the valve shaft can no longer be turned. (Open position)
Closing (1) Insert the hexagon wrench into the valve shaft, and turn it clockwise. ●
(2) Stop turning when the valve shaft can no longer be turned. (Closed position)
Opening direction
Opening direction
Hexagon wrench
Liquid pipe
Gas pipe
Seal (blank cap installation portion)
- (06 - 33) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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