VC Pro VRF 50/60Hz
154
Midea VC Pro Series Engineering Data Book
Figure 3-4.2: Permitted refrigerant piping lengths and level differences
Table 3-4.3: Summary of permitted refrigerant piping lengths and level differences
L
1
+ 2 x Ʃ{L
2
to L
16
} + Ʃ{a to q}
Piping between farthest indoor
unit and first outdoor branch
joint
2
Piping between farthest indoor unit and first
indoor branch joint
3
Piping between outdoor unit and outdoor branch
joint
g1+G1 ≤ 10m; g2+G1 ≤ 10m;
g3 ≤ 10m
Largest level difference between
indoor unit and outdoor unit
4
Largest level difference between indoor units
5
Notes:
1. Refer to Requirement 1, above.
2. Refer to Requirement 2, above.
3. Refer to Requirement 3, above.
4. Refer to Requirement 4, above.
5. Refer to Requirement 5, above.
N1
(140)
N4(140)
N9
(112)
N10
(140)
N12
(28)
N13
(140)
N16
(56)
N15
(140)
N3(71)
N7(28)
N6
(140)
N8(140)
N14
(56)
N17
(140)
A
B
I
J
N
K
O
C
F
H
E
L1
L2
L3
L5
L7
L8
L11
L12
L13
L15
L14
L16
L9
a
c
d
f
g
h
j
l
m
n
o
p
q
k
S
R
g1
g2
g3
G1
D
N2
(140)
b
L4
N5
(112)
G
L6
e
N11
(71)
i
L
L10
M
P
W3
(16)
W2
(22)
W1
(26)
Largest level di
fference betwee indoor
unit and outdoor unit ≤ 90m
Piping between farthest indoor unit and first indoor
branch joint ≤ 40m
Equivalent length of piping between farthest indoor
unit and first outdoor branch joint ≤ 200m
ILargest level di
fference between
indoor units ≤ 30m
Figures in
parentheses indicate
indoor unit capacity
indexes.