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(C) Put on the Union Nut
Put on suitable insulating pipe. Remove the union nut on the indoor connection pipe and
outdoor valve. Install the union nut on the pipe.
(D) Expand the Port
Expand the port with expander.
„A“ is different according to the diameter, please refer to the sheet below:
Outer diameter (mm)
A (mm)
Max
Min
Ø 6 – 6,35 (1/4“)
1,3
0,7
Ø 9,52 (3/8“)
1,6
1,0
Ø 12 – 12,7 (1/2“)
1,8
1,0
Ø 15,8 – 16 (5/8“)
2,4
2,2
Union nut
Pipe
Expander
hard mold
Pipe