218
2. Pipe length between outdoors
Gas/liquid pipe: L1+L3 <10m, L2+L3<10m
Oil equalization pipe: L5+L6<10m
Height difference between outdoors: h<5m
Note:
a. HZG-30A includes HZG-20A;
b. The connection pipe among outdoors can't be higher than the outdoor unit check valve to avoid over oil return to
compressor;
c. The piping should be installed horizontal or with slope toward the interior units (less than 15 degree).
Outdoor 1
Outdoor 2 Outdoor 3
h
L5
L1
L2
L3
L4
L6
1st outdoor branch pipe
2nd outdoor branch pipe
Outdoor 1
Min. 200mm
Outdoor 2 Outdoor 3
Outdoor 1 Outdoor 2 Outdoor 3
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