York YHKMXH009BARX-FX, Service Manual, Page: 166 / 269

6. Limitation values on pipe installation
3U19FS1ERA 3U24GS1ERA
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
164