20
Refrigerant pipe installation
Connection by header joint
g
Outdoor unit
Header joint
Indoor unit
Connection by Y-joint/header joint
H2
H1
f
c
g
Outdoor unit
Indoor unit
Header joint
Y-joint
Classification Header joint connection Y-joint / header joint connection
Maximum
allowable
length of
pipe
Outdoor
unit ~
Indoor units
Actual
Length
The distance between an outdoor unit and the farthest indoor unit ≤ 150m (492’)
Ex) 8 indoor units
a+g≤ 150m (492’)
Ex) 8 indoor units
a+b+c ≤ 150m (492’)
Equivalent
length
The distance between an outdoor unit and the farthest indoor unit ≤ 175m (574’)
Main pipe
length
The main pipe(a) from the outdoor unit to the first Y-joint should be less than 110m
(361’).
Total
length
The sum of total length of pipes should be less then 300m (984’).
Maximum
allowable
height
Outdoor
unit ~
Indoor units
Height H1: The difference in height between an outdoor unit and indoor unit < 50m (164’)
Height H2: The difference in height between indoor units ≤ 15m (49’)
Maximum allowable
length after Y-joint
Actual
Length
The distance between the header joint
and the indoor unit ≤ 40m (131’)
Ex) b, c ~ f, g ≤ 40m (131’)
The distance between the first Y-joint and
the farthest indoor unit ≤ 40m (131’)
Ex) 8 indoor units
b+c, d+g ≤ 40m (131’)
When the equivalent length between an outdoor unit and the farthest indoor unit exceeds 90m (295’), upgrade the low
pressure pipe of the main pipe one step.
AM0@@FXMDCH_IM_EN_03408A(1).indd 20 2013-03-04 오후 4:28:19
To Next Page
Loading...
