Midea V4 Plus S Series Service Manual page 95

MCAC-VTSM-2015-09
4 units
 Table 3: Outdoor unit connection pipe selection (g1, g2, g3, g4, G1, G2) Unit: in.(mm)
Pipe
g1,g2,g3,g4
G1
G2
 Table 4: Outdoor unit branching pipe assembly selection (L, M, N)
Outdoor unit quantity
2 units
3 units
4 units
 Table 5: Indoor unit to the nearest branch joint (a~j) Unit: in.(mm)
Capacity of indoor unit
kW(kBtu/h))
A≤4.5(15.4)
A≥5.6 (19.1)
3.3 Example
Example below::
(Provided that the capacity of outdoor units is (10+14+16) HP, the equivalent length of all pipes in this system
is larger than 90m, the pipe length from the 1
pipe from indoor unit to the nearest branch joint is less than 10m.
W3 W2
(10) (14)
g1 g2
M
Installation
8~10HP
12~18HP
Parallel connection with branch pipes
L: FQZHW-02N1D
L+M: FQZHW-03N1D
L+M+N: FQZHW-04N1D
The pipe length from indoor unit to the nearest
branch joint ≤32.8ft.(10m)
Gas pipe
Φ12.7(Φ1/2)
Φ15.9(Φ5/8)
W1
(16)
g3
A
L
L
1
G1
L
g4
Gas pipe
Φ25.4(Φ1)
Φ31.8(Φ1-1/4)
Φ38.1(Φ1-1/2)
Φ41.3(Φ1-5/8)
Liquid pipe
Φ6.35(Φ1/4)
Φ9.53(Φ3/8)
st
branch joint to the farthest indoor unit is less than 40m, and the
L
B
L
L
2
5
L
6
F
E
L
8
H
R410A All DC Inverter V4+S Series 60Hz
g3 g2 g1
Main pipe
N
M
L
G2
G1
Liquid pipe
Φ12.7(Φ1/2)
Φ15.9(Φ5/8)
Φ19.1(Φ3/4)
Φ22.2(Φ7/8)
The pipe length from indoor unit to the nearest
branch joint ＞32.8ft.(10m)
Gas pipe
Φ15.9(Φ5/8)
Φ19.1(Φ3/4)
N
(140)
a
C
3
D
4
c
N
(140)
N
5
(140)
e f
G
L
7
g
L
9
I
i
h
N
8
(140)
Liquid pipe
Φ9.53(Φ3/8)
Φ12.7(Φ1/2)
1
N
2
(140)
b
d
N
3 4
(140)
N
6
(71)
N
7
(71)
j
N
N
9
10
(56)
(56)
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