6 720 862 437 (2016/10)
RDCI Series – All DC Inverter Outdoor Units
8 | REFRIGERANT PIPE
5. REFRIGERANT PIPE
5.1 Length and drop height permitted
for the refrigerant pipework
Note: Ensure a distance of at least 0.5m between branch pipes.
Table.5-1
Permitted
value
Pipework
Pipe length
Total pipe length (Actual)
1000m
(Please refer to
the caution 5 of
conditions 2)
L1+(L2+L3+L4+L5+L6+L7
+L8+L9+L10+L11+L12+
L13)×2+a+b+c+d+e+f+g+
h+i+j+k+l+m+n
Maximum
pipework (L)
Actual
length
175m
L1+L7+L9+L11+j+k+n
Equivalent
length
200m
(Please refer to
caution 1)
Pipework (furthest from
the first line pipe branch)
equivalent length
40m/90m
(Please refer to
caution 5)
L7+L9+L11+j+k+n
SBOX to indoor unit
equivalent length
40m j+k+n
Drop height
Indoor unit
to outdoor
unit drop
height
outdoor
unit up
70m*
(Please refer
to caution 3)
outdoor unit
down
110m
(Please refer
to caution 4)
Indoor unit to indoor unit
drop height
30m _____________
N3
(140)
N5
(140)
N6
(71)
N7
(71)
N9
(56)
N8
(28)
N2
(71)
N4
(28)
N1
(71)
N10
(56)
A
B
C
E
F
Ⅱ
Ⅳ
Ⅲ
Ⅰ
b
c
d
f
g
j
h
i
l
k
m n
e
L
1
L2
L9
L13
L11
L10
L12
L3
a
SB1
SB2
SB3
SB4
SB5
SB6
L4
L5
L6
D
N11
(140)
p
N12
(140)
q
N13
(56)
r
L
8
L7
SB7
Fig. 5-1
Indoor unit
The first line branch pipe
Maximum height between outdoor and indoor units
unit and outdoor unit H≤110m
Maximum height from indoor unit to indoor unit.
drop height H≤30m
Outdoor unit
(one or more outdoor units)
Max pipework equivalent length L≤200m
(From the first line branch pipe) Maximum
pipework equivalent length L≤40m/90m
SBOX to indoor unit equivalent length L≤40m
* A system with a height difference above 70m is not supported as standard but is available on request for customisation.
Fig. 5-2
≥300m
≥300m
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