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10. Installation
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
Classification
Outdoor
Indoor unit
Maximum
allowable
length of pipe
Outdoor
Outdoor unit
(Module
installation)
Outdoor unit
Maximum
allowable
height
Indoor unit
difference of
pipe
Single Installation
Outdoor unit
Branch joint
b
c
d
e
f
A
B
C
D
E
F
a
h
i
j
k
l
1
2
3
4
5
Indoor unit
Outdoor unit
Branch joint
i
A
a
b
H1
g
c
d
e
f
1
2
3
4
5
Indoor unit
Outdoor unit
Distribution header
a
g
b
c
d
e
f
1
2
3
4
5
6
Indoor unit
Installing only with
Y-joint
200 m(656')
Actual length
and below
Installing with Y-joint
(Equivalent
[220 m(722')
and distribution header
length)
and below]
Installing only with
distribution header
Installing only with
Y-joint
Total length
1000 m(3281')
Installing with Y-joint
and distribution header
of pipe (m)
or less
Installing only with
distribution header
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
g
p
G
H1
A
a
m
n
6
7
H2
8
Outdoor unit
Distribution header
B
k
j
7
8
H1
H2
h
6
Outdoor unit
a
H1
h
b
i
7
H2
8
Indoor unit
Example
m(220 m)/656'(722')
200 m(220 m)/656'(722')
a+b+c+d+e+f+g+h+i+
a+b+c+d+e+f+g+h+i+j+k
a+b+c+d+e+f+g+h+i
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
Indoor unit
Distribution header
Branch joint
i
A
B
a
j
b
7
g
c
d
e
f
h
1
2
3
4
5
6
Indoor unit
Distribution header
g
c
d
e
f
h
i
1
2
3
4
5
6
7
H2
8
Remarks
200
Equivalent length
Y-joint: 0.5 m (1.64'),
Distribution header:
1 m(3.28')
x
y
H1
8
k
8
H2
H1
-
-
-
z
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