Restrictions On Refrigerant Pipe Size - Mitsubishi Electric HP120TNU-A Service Handbook

[2-10 Restrictions on Refrigerant Pipes ]
2-10-2

Restrictions on Refrigerant Pipe Size

(1) Between outdoor unit and BC controller (Part A)
Outdoor units
HP72
HP96
HP120
HP144
HP192
HP240
*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)
Indoor unit
P05 - P18
P24 - P54
P72
P96
(3) Between the main and sub BC controllers (Sections F, G, J, and K)
Total capacity of downstream indoor
units
- P72
P73 - P108
P109 - P126
P127 - P144
P145 - P180
P181 - P234
P235 - P288
P289 - P360
P361 -
38
- chapter 2
High-pressure pipe Low-pressure pipe
ø15.88 [5/8"]
ø19.05 [3/4"]
ø28.58 [1-1/8"]
ø22.2 [7/8"]
*1
ø22.2 [7/8"] ø34.93 [1-3/8"]
Liquid pipe
ø6.35 [1/4"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
High-pressure gas pipe Low-pressure gas pipe
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
ø28.58 [1-1/8"]
ø34.93 [1-3/8"]
Unit : mm [inch]
ø19.05 [3/4"]
ø22.2 [7/8"]
Unit : mm [inch]
Gas pipe
ø12.7 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
Liquid pipe
ø19.05 [3/4"]
ø9.52 [3/8"]
ø22.2 [7/8"]
ø12.7 [1/2"]
ø28.58 [1-1/8"]
ø15.88 [5/8"]
ø34.93 [1-3/8"]
ø19.05 [3/4"]
ø41.28[1-5/8"]
Unit : mm [inch]
HWE18220_GB