Samsung AM TXMDEH Series Installation Manual page 21

Connection by header joint
Outdoor unit
Header joint
Connection by Y-joint/header joint
Outdoor unit
Y-joint
H1
Indoor unit
Classification
Maximum
Outdoor
allowable
unit ~
length of
Indoor units
pipe
Maximum Outdoor
allowable unit ~
height Indoor units
Maximum allowable
length after Y-joint
❋ When the equivalent length between an outdoor unit and the farthest indoor unit exceeds 90 m, upgrade the low
pressure pipe of the main pipe one step.
g
Indoor unit
Header joint
f g
c
The distance between an outdoor unit and the farthest indoor unit ≤ 150 m
Actual Length
Ex) 8 indoor units
a+g≤ 150 m
Equivalent length The distance between an outdoor unit and the farthest indoor unit ≤ 175 m
The main pipe(a) from the outdoor unit to the first Y-joint should be less than
Main pipe length
110 m.
Total length The sum of total length of pipes should be less then 300 m.
Height H1: The difference in height between an outdoor unit and indoor unit < 50 m
Height H2: The difference in height between indoor units ≤ 15 m
The distance between the header
joint and the indoor unit ≤ 40 m
Actual Length
Ex) b, c ~ f, g ≤ 40 m
H2
Header joint connection Y-joint / header joint connection
Ex) 8 indoor units
a+b+c ≤ 150 m
The distance between the first Y-joint
and the farthest indoor unit ≤ 40 m
Ex) 8 indoor units
b+c, d+g ≤ 40 m
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