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22 Outdoor Unit
Refrigerant piping installation
2 outdoor units
3 outdoor units
Connection of Outdoor units
Don't cut the pipe less than
70mm(2-3/4inch)
Master outdoor
gas pipe
Blow nitrogen while
brazing
Ø 31.8(1-1/4)
Ø 28.58(11/8)
Ø 28.58(1-1/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
Master outdoor
liquid pipe
Main pipe
Main pipe
Ø 12.7(1/2)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 19.05(3/4)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 34.9(1-3/8)
OD28.58(11/8)
Ø19.05(3/4)
Ø22.2(7/8)
OD34.9(1-3/8)
Ø38.1(1-1/2)
Ø15.88(5/8)
OD19.05(3/4)
OD12.7(1/2)
Ø9.52(3/8)
Ø22.2(7/8)
OD19.05(3/4)
Connection of gas pipe
Connection of liquid pipe
Model
ARCNN20
Y branch
A
B
To outdoor unit
To branch piping or indoor unit
A
B
Facing
upwards
Facing
downwards
Within ± 3° Within ± 3°
Viewed from point A
in direction of arrow
Within +/- 10°
Unit: mm(inch)
Main pipe
Slave1 outdoor unit
Master outdoor
Ø 12.7(1/2)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 12.712.7(1/2)
Ø 19.05(3/4)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 22.2(7/8)
Ø 19.05(3/4
Slave1 outdoor
gas pipe
Ø 31.8(1-1/4)
Ø 28.58(1-1/8)
Ø 28.58(1-1/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
Main pipe
Ø 34.9(1-3/8)
Don't cut the pipe less
than 70mm(2-3/4inch)
Blow nitrogen
while brazing
Master outdoor
gas pipe
Ø 31.8(1-1/4)
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
Ø 28.58(1-1/8)
Ø 28.58(1-1/8)
Ø 41.3(1-5/8)
Don't cut the pipe less
than 70mm(2-3/4inch)
Blow nitrogen
while brazing
OD
28.58(11/8)
Ø
19.05(3/4)
Ø22.2(7/8)
Ø38.1(1-1/2)
OD
34.9(1-3/8)
Ø15.88(5/8)
OD19.05(3/4)
OD
28.58(1-1/8)
Ø
19.05(3/4)
Ø
22.2(7/8)
Ø22.2(7/8)
OD19.05(3/4)
Ø9.52(3/8)
OD12.7(1/2)
Ø9.52(3/8)
OD12.7(1/2)
Connection of gas pipe
Connection of liquid pipe
Connection of gas pipe
Connection of liquid pipe
Model
ARCNN20
Model
ARCNN30
Unit: mm(inch)Unit: mm(inch)
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