10. Installation
60
Refrigerant pipe installation
H/R
(A)
(B)
(D)
(E)
(F)
(C)
(3)
(2)
(1)
Branch joint
Branch joint between outdoor units (C)
Classification Model name Specification (kW)
Liquid/Low pressure Y-joint
(C)
Over 135.2 kW
High pressure Y-joint (C)
Over 135.2 kW
First branch joint (D)
Make a selection according to outdoor unit capacity.
Classification
Outdoor unit capacity
(kW)
Model name of the
branch joint
Liquid/Low
pressure Y-joint (D)
40.1 kW ~ 45.0 kW
45.1 kW ~ 67.2 kW
67.3 kW ~ 95.2 kW
95.3 kW ~ 135.2 kW
Over 135.2 kW
High pressure
Y-joint (D)
22.4 kW
22.5 kW ~ 67.2 kW
67.3 kW ~ 135.2 kW
Over 135.2 kW
Branch joint (E)
Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch.
However, if the size of the pipe between branch joints (E) is bigger than the size of the pipe connected to the
outdoor unit (D), apply the pipe size (D).
• Y-joint
Classification Model name Specification (kW)
Y-joint (E)
15.1 kW ~ 40.0 kW
40.1 kW ~ 45.0 kW
45.1 kW ~ 70.3 kW
70.4 kW ~ 98.4 kW
98.5 kW ~ 135.2 kW
Y-joint (E)
(Only H/R)
22.5 kW ~ 70.3 kW
70.4 kW ~ 135.2 kW
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