ENGLISH-50
Refrigerant pipe installation
Classification
Example
Remarks
Maximum
allowable
pipe length
Outdoor unit ~
Indoor unit
Actual pipe
length
(Equivalent
length)
170 m (558’)
or less
[190 m (623’)
or less]
Installing only
with MCU
a+b+c+d+e+f+g ≤ 170 m
(190 m) / 558’ (623’)
Equivalent length
t
Y-joint: 0.5 m
(1.64’)
t
Distribution
header: 1 m
(3.28’)
t
MCU: 1 m (3.28’)
Installing with
MCU and Y-joint
a+g+m ≤ 170 m (190 m) /
558’ (623’)
Total length
of pipe
300 m (984’)
or less
Installing only
with MCU
a+b+c+d+e+f+g ≤ 300 m
Installing with
MCU and Y-joint
a+b+c+d+e+f+g+p+h+
i+j+k+m+n ≤ 300 m
Outdoor unit
~ Outdoor
unit (Module
installation)
Pipe length
10 m (33’)
or less
r ≤ 10 m (33’), s ≤ 10 m (33’), t ≤ 10 m (33’)
Equivalent
length
13 m (43’) or
less
r ≤ 13 m (43’), s ≤ 13 m (43’), t ≤ 13 m (43’)
Maximum
allowable
height
difference
Outdoor unit ~
Indoor unit
Pipe length
50/40 m
(164’/131’)
Note 2)
H1 ≤ 50/40 m (164’/131’)
Indoor unit ~
Indoor unit
Pipe length
15 m (49’) or
less
H2 ≤ 15 m (49’)
MCU ~ MCU
Pipe length
15 m (49’) or
less
H4 ≤ 15 m (49’)
Maximum
allowable
length after
branch joint
First branch joint
~ Farthest Indoor
unit
Pipe length
45 m (148’)
or less
Installing only
with MCU
g ≤ 45 m (148’)
Installing with
MCU and Y-joint
g+m ≤ 45 m (148’)
Distribution kit
Model
Remarks
Allowable
From distribution kit to
indoor unit
2 m
(6.6’)
MEV-E24SA, MEV-E32SA (For 1 indoor unit)
For wall-mounted &
ceiling indoor unit
Note 1) If an outdoor unit is located in a lower position than indoor unit, maximum level difference is 40 m (131’). If outdoor
unit is located in a higher position than indoor unit, level difference is 50 m (164’) or under.
❋
Total refrigerant amount of the system must be less than 100 kg (220 lb). If total refrigerant amount of system is over than
100 kg (220 lb), the system has to be divided into smaller system, each less than 100 kg (220 lb).
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