Mitsubishi Electric PURY-HP144, Service Handbook

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[2-10 Restrictions on Refrigerant Pipes ]
38
- chapter 2 HWE18220_GB
2 Restrictions
2-10-2 Restrictions on Refrigerant Pipe Size
(1) Between outdoor unit and BC controller (Part A)
*1 When the high pressure pipe exceeds 65 meters, the pipe diameter of the section exceeding 65 meters should be 28.58
[1-1/8"].
(2) Between BC controller and indoor units (Sections a, b, c, d, e, f, g, i, j, k, m, and n)
(3) Between the main and sub BC controllers (Sections F, G, J, and K)
Unit : mm [inch]
Outdoor units High-pressure pipe Low-pressure pipe
HP72 ø15.88 [5/8"] ø19.05 [3/4"]
HP96
ø19.05 [3/4"]
ø22.2 [7/8"]
HP120
ø28.58 [1-1/8"] HP144
ø22.2 [7/8"]
HP192
HP240 ø22.2 [7/8"]
*1
ø34.93 [1-3/8"]
Unit : mm [inch]
Indoor unit Liquid pipe Gas pipe
P05 - P18 ø6.35 [1/4"] ø12.7 [1/2"]
P24 - P54 ø9.52 [3/8"] ø15.88 [5/8"]
P72 ø9.52 [3/8"] ø19.05 [3/4"]
P96 ø9.52 [3/8"] ø22.2 [7/8"]
Unit : mm [inch]
Total capacity of downstream indoor
units
High-pressure gas pipe Low-pressure gas pipe Liquid pipe
- P72 ø15.88 [5/8"] ø19.05 [3/4"]
ø9.52 [3/8"]
P73 - P108
ø19.05 [3/4"]
ø22.2 [7/8"]
P109 - P126
ø28.58 [1-1/8"]
ø12.7 [1/2"]
P127 - P144
ø22.2 [7/8"]
P145 - P180
ø15.88 [5/8"]
P181 - P234
ø28.58 [1-1/8"] P235 - P288 ø34.93 [1-3/8"]
ø19.05 [3/4"] P289 - P360
ø41.28[1-5/8"]
P361 - ø34.93 [1-3/8"]