63
Item Unit Description Standard Maximum
A,B,C liquid pipe mm Size of the liquid side connection pipe φ6.35 /
A,B,C Gas pipe mm Size of the gas side connection pipe φ9.52 /
L1 (one way) m Max.piping length between IU and OU of the way ≤ 10 ≤ 25
L2 (one way) m Max.piping length between IU and OU of the way ≤ 10 ≤ 25
L3 (one way) m Max.piping length between IU and OU of the way ≤ 10 ≤ 25
L1+L2+L3 m Total liquid piping length ≤ 30 3U52 3U68<60
h
m
Drop between every two indoor units when the location of
the outdoor unit is among indoor units
≤ 1 ≤ 15
m
Drop between every two indoor units when the location of
the outdoor unit is at one side of indoor units
≤ 1 ≤ 7.5
H+ m Drop between the outdoor unit and the indoor unit ≤ 5 ≤ 15
H
m
Drop between the outdoor unit and the indoor unit when the
location of outdoor unit is among the indoor units
≤ 5 ≤ 7.5
m
Drop between the outdoor unit and the indoor unit when the
location of outdoor unit is at one side of indoor units
≤ 5 ≤ 15
The piping length information, please refer the following table.
3U52S2SG1FA 3U68S2SG1FA
6. Limitation values on pipe installation