10. Installation
60
Refrigerant pipe installation
H/R
(A)
(B)
33.6 kW 39.2 kW
(D)
(E)
(F)
(C)
(3)
(2)
(1)
44.8 kW
Branch joint
f
Branch joint between outdoor units (C)
Classification
Model name
Specification (kW)
Liquid/Low pressure Y-joint
(C)
MXJ-TA3419M
135.2 kW and below
MXJ-TA4122M
Over 135.2 kW
High pressure Y-joint (C)
MXJ-TA3100M
135.2 kW and below
MXJ-TA3800M
Over 135.2 kW
f
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)
40.0 kW and below
MXJ-YA2512M
40.1 kW ~ 45.0 kW
MXJ-YA2812M
45.1 kW ~ 67.2 kW
MXJ-YA2815M
67.3 kW ~ 95.2 kW
MXJ-YA3419M
95.3 kW ~ 135.2 kW
MXJ-YA4119M
Over 135.2 kW
MXJ-YA4422M
High pressure
Y-joint (D)
22.4 kW
MXJ-YA1500M
22.5 kW ~ 67.2 kW
MXJ-YA2500M
67.3 kW ~ 135.2 kW
MXJ-YA3100M
Over 135.2 kW
MXJ-YA3800M
f
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)
MXJ-YA1509M
15.0 kW and below
MXJ-YA2512M
15.1 kW ~ 40.0 kW
MXJ-YA2812M
40.1 kW ~ 45.0 kW
MXJ-YA2815M
45.1 kW ~ 70.3 kW
MXJ-YA3419M
70.4 kW ~ 98.4 kW
MXJ-YA4119M
98.5 kW ~ 135.2 kW
MXJ-YA4422M
Over 135.2 kW
Y-joint (E)
(Only H/R)
MXJ-YA1500M
22.4 kW and below
MXJ-YA2500M
22.5 kW ~ 70.3 kW
MXJ-YA3100M
70.4 kW ~ 135.2 kW
MXJ-YA3800M
Over 135.2 kW