Mitsubishi Electric PQHY-P200YLM-A Service Handbook page 72

[ II Restrictions ]
1. Refrigerant pipe size <PQHY>
(1) Diameter of the refrigerant pipe between the heat source unit and the first branch (heat source unit pipe size)
Heat source unit set
name
P200 model
P250 model
P300 model
P350 model
P400 - P600 models
P700 - P800 models
P850 - P900 models
*1. Use ø12.7 [1/2"] pipes if the piping length exceeds 90 m [295 ft].
*2. Use ø12.7 [1/2"] pipes if the piping length exceeds 40 m [131 ft].
(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)
Indoor unit model
15 - 50 models
63 - 140 models
200 model
250 model
(3) Size of the refrigerant pipe between the branches for connection to indoor units
Total capacity of the
downstream units
- 140
P141 - P200
P201 - P300
P301 - P400
P401 - P650
P651 - P800
P801 -
(4) Size of the refrigerant pipe between the first distributor and the second distributor
Heat source unit set
name
P700 - 800 models
P850 - 900 models
HWE15060
Liquid pipe size (mm) [inch]
ø9.52 [3/8"]
*1
ø9.52 [3/8"]
*2
ø9.52 [3/8"]
ø12.7 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
Pipe diameter (mm) [inch]
Liquid pipe ø6.35 [1/4"]
Gas pipe ø12.7 [1/2"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø15.88 [5/8"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø19.05 [3/4"]
Liquid pipe ø9.52 [3/8"]
Gas pipe ø22.2 [7/8"]
Liquid pipe size (mm) [inch]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø12.7 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
Liquid pipe size (mm) [inch]
ø19.05 [3/4"]
ø19.05 [3/4"]
Gas pipe size (mm) [inch]
ø19.05 [3/4"]
ø22.2 [7/8"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø34.93 [1-3/8"]
ø41.28 [1-5/8"]
Gas pipe size (mm) [inch]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø34.93 [1-3/8"]
ø41.28 [1-5/8"]
Gas pipe size (mm) [inch]
ø34.93 [1-3/8"]
ø41.28 [1-5/8"]
- 63 -
GB