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Refrigerant pipe installation
Allowable length of the refrigerant pipe and the installation examples
Classification
Installing only with Y-joint
Installing with Y-joint and
distribution header
Installing only with distribution
header
Outdoor
unit ~
Indoor unit
Maximum
allowable
length of pipe
Outdoor
unit ~
Outdoor unit
(Module
installation)
Outdoor unit
Maximum
~ Indoor unit
allowable
height
Indoor unit
difference of
~ Indoor unit
pipe
28
English
DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 28
DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 28
Single Installation
Outdoor unit
Branch joint
b
c
d
e
A
B
C
D
E
a
h
i
j
k
1
2
3
4
Indoor unit
Outdoor unit
Branch joint
A
b
a
H1
c
d
e
f
1
2
3
4
Indoor unit
Outdoor unit
a
b
c
d
e
1
2
3
4
5
Indoor unit
Classification
200 m(656')
Actual length
and below
(Equivalent
[220 m(722')
length)
and below]
Total length
1000 m(3281')
of pipe (m)
or less
10 m (33') or
Pipe length
less
Equivalent
13 m (43') or
length
less
110/110 m(361'/361')
Note 2)
50 m (164') or less
But, when wall-mount type indoor units with EEV (AM****NQD* / AM****NVD*) is installed, H2 is 15 m(49') or less.
Outdoor unit
f
g
p
F
G
H1
A
a
l
m
n
5
6
7
H2
8
Outdoor unit
Distribution header
i
B
k
a
j
H1
7
8
H2
g
h
c
5
6
Indoor unit
Outdoor unit
Distribution header
a
H1
g
f
h
b
i
H2
6
7
8
Indoor unit
Example
a+b+c+d+e+f+g+p ≤
Installing only with
Y-joint
200 m(220 m)/656'(722')
Installing with Y-joint
a+b+h ≤ 200m (220m), a+i+k ≤
and distribution header
200 m(220 m)/656'(722')
Installing only with
a+i ≤ 200 m(220 m)/656'(722')
distribution header
a+b+c+d+e+f+g+h+i+
Installing only with
Y-joint
j+k+l+m+n+p ≤ 1000 m (3281')
a+b+c+d+e+f+g+h+i+j+k
Installing with Y-joint
and distribution header
≤ 1000 m (3281')
a+b+c+d+e+f+g+h+i
Installing only with
distribution header
≤ 1000 m (3281')
x ≤ 10 m (33'), y ≤ 10 m (33'), z ≤ 10 m (33')
x ≤ 13 m (43'), y ≤ 13 m (43'), z ≤ 13 m (43')
H1 ≤ 110/110 m(361'/361')
H2 ≤ 50 m (164')
Module installation
Branch joint
b
c
d
e
f
g
p
B
C
D
E
F
G
h
i
j
k
l
m
n
1
2
3
4
5
6
7
H2
8
Indoor unit
Distribution header
Branch joint
i
A
B
j
b
7
8
g
d
e
f
h
1
2
3
4
5
6
Distribution header
g
c
d
e
f
h
i
1
2
3
4
5
6
7
H2
8
Remarks
Equivalent length
Y-joint: 0.5 m (1.64'),
Distribution header:
1 m(3.28')
-
-
-
x
y
z
2022-09-13 오전 9:34:13
2022-09-13 오전 9:34:13
H1
k
H2
H1
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