Mitsubishi Electric PURY-P72 Service Handbook page 60

[II Restrictions)
1. Refrigerant pipe size
(1) Between outdoor
unit
and the first twinning pipe (Part A)
Unit: mm [inch]
Refrigerant pipe size Connection to outdoor unit and BC controller
Outdoor units
Low-pressure pipe High-pressure pipe Low-pressure pipe
High-pressure pipe
72
019.05 [3/4") 015.88 [5/8'1 019.05 [3/4") 015.88 [5/8")
96
022.2 [7/8") 022.2 [7/8")
120
019.05 [3/4"] 019.05 [314")
144
168
022.2(7/8"] 022.2 [7/8"]
028.58 [1-1/8"J
028.58 [1-1/8"J
192
216
028.58 [1-1/8j 028.58 [1-1/8")
240
(2) Between BC controller and indoor unit (Sections a, b, c, d, e, and f)
Unit: mm [inch)
Refrigerant pipe size Indoor unit connection
Indoor unit
(Flare connection for all models)
Liquid pipe Gas pipe liquid pipe Gas pipe
P06,P08,P12,P15,P18
06.35 [1/4") 012.7 [1/2") 06.35 [1/4j 012.7 [1/2")
P24,P27,P30
P36,P48,P54
09.52 [3/8")
015.88 [5/8"J 09.52 [3/8"J
015.88 [5/8")
P72
019.05 [3/4") 019.05 [3/4'1
P96
012.7 [1/2")
022.2
012.7 [1/2")
022.2
[7/8") [718")
(3) Between the main and sub BC controllers (Section C)
Unit: mm [inch)
Indoor unit
Refrigerant pipe size (Brazed connection on all models)
Liquid pipe High-pressure gas pipe Low-pressure gas pipe
- P72
015.88 [5/8") 019.05 [3/4'1
P73 - P108
09.52 [3/8")
022.2 [718")
P109 - P126
019.05 [3/4")
P127 - P144
012.7 [1/2j
1Il28.58
[1-1/8"J
022.2 [718'1
P145 - P168
015.88 [5/8"J
Select the proper size pipes for the main unit based on the total capacity of the indoor units that are connected to both sub
BC controllers. Select the proper size pipes for the sub controller side based on the total capacity of the indoor units that are
connected to the sub controller.
HWEQBQ3A
- 50-
GB