Installation manual

[ II Restrictions ]
- 44 -
HWE10040 GB
1. Refrigerant pipe size
(1) Diameter of the refrigerant pipe between the outdoor unit and the first branch (outdoor unit pipe size)
(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)
(3) Size of the refrigerant pipe between the branches for connection to indoor units
Outdoor unit set name
(total capacity)
Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]
200 model ø9.52 [3/8"] ø19.05 [3/4"]
250 model ø9.52 [3/8"]
*1
*1. Use ø12.7 [1/2"] pipes if the piping length exceeds 90 m [295 ft].
ø22.2 [7/8"]
300 model ø9.52 [3/8"]
*2
*2. Use ø12.7 [1/2"] pipes if the piping length exceeds 40 m [131 ft].
ø22.2 [7/8"]
350 model ø12.7 [1/2"] ø28.58 [1-1/8"]
400 model ø12.7 [1/2"] ø28.58 [1-1/8"]
450 model ø15.88 [5/8"] ø28.58 [1-1/8"]
500 model ø15.88 [5/8"] ø28.58 [1-1/8"]
550 model ø15.88 [5/8"] ø28.58 [1-1/8"]
600 model ø15.88 [5/8"] ø28.58 [1-1/8"]
650 model ø15.88 [5/8"] ø28.58 [1-1/8"]
700 - 800 model ø19.05 [3/4"] ø34.93 [1-3/8"]
850 - 1250 model ø19.05 [3/4"] ø41.28 [1-5/8"]
model Pipe diameter (mm) [inch]
20 - 50 models Liquid pipe ø6.35 [1/4"]
Gas pipe ø12.7 [1/2"]
63 - 140 models Liquid pipe ø9.52 [3/8"]
Gas pipe ø15.88 [5/8"]
200 model Liquid pipe ø9.52 [3/8"]
Gas pipe ø19.05 [3/4"]
250 model Liquid pipe ø9.52 [3/8"]
Gas pipe ø22.2 [7/8"]
400 model Liquid pipe ø12.7 [1/2"]
Gas pipe ø28.58 [1-1/8"]
500 model Liquid pipe ø15.88 [5/8"]
Gas pipe ø28.58 [1-1/8"]
Total capacity of the
downstream units
Liquid pipe size (mm) [inch] Gas pipe size (mm) [inch]
- 140 ø9.52 [3/8"] ø15.88 [5/8"]
P141 - P200 ø9.52 [3/8"] ø19.05 [3/4"]
P201 - P300 ø9.52 [3/8"] ø22.2 [7/8"]
P301 - P400 ø12.7 [1/2"] ø28.58 [1-1/8"]
P401 - P650 ø15.88 [5/8"] ø28.58 [1-1/8"]
P651 - P800 ø19.05 [3/4"] ø34.93 [1-3/8"]
P801 - ø19.05 [3/4"] ø41.28 [1-5/8"]