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
3U19:≤50
3U24:≤60
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
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
h
H-
The piping length information, please refer the following table.
YJU3YH019BARXA-X
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