Midea V4 Plus S Series - Page 95

MCAC-VTSM-2015-09 R410A All DC Inverter V4+S Series 60Hz
Installation 93
4 units
 Table 3: Outdoor unit connection pipe selection (g1, g2, g3, g4, G1, G2) Unit: in.(mm)
Pipe
Gas pipe
Liquid pipe
g1,g2,g3,g4
8~10HP
Φ25.4(Φ1)
Φ12.7(Φ1/2)
12~18HP
Φ31.8(Φ1-1/4)
Φ15.9(Φ5/8)
G1
Φ38.1(Φ1-1/2)
Φ19.1(Φ3/4)
G2
Φ41.3(Φ1-5/8)
Φ22.2(Φ7/8)
 Table 4: Outdoor unit branching pipe assembly selection (L, M, N)
Outdoor unit quantity
Parallel connection with branch pipes
2 units
L: FQZHW-02N1D
3 units
L+M: FQZHW-03N1D
4 units
L+M+N: FQZHW-04N1D
 Table 5: Indoor unit to the nearest branch joint (a~j) Unit: in.(mm)
Capacity of indoor unit
kW(kBtu/h))
The pipe length from indoor unit to the nearest
branch joint ≤32.8ft.(10m)
The pipe length from indoor unit to the nearest
branch joint ＞32.8ft.(10m)
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
A≤4.5(15.4)
Φ12.7(Φ1/2)
Φ6.35(Φ1/4)
Φ15.9(Φ5/8)
Φ9.53(Φ3/8)
A≥5.6 (19.1)
Φ15.9(Φ5/8)
Φ9.53(Φ3/8)
Φ19.1(Φ3/4)
Φ12.7(Φ1/2)
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
st
branch joint to the farthest indoor unit is less than 40m, and the
pipe from indoor unit to the nearest branch joint is less than 10m.
L
M
N
G2
G1
g1g2g3g4
Main pipe
N1
(140)
N3
(140)
N5
(140)
N6
(71)
N7
(71)
N9
(56)
N8
(140)
N2
(140)
N4
(140)
N10
(56)
A
B
E
F
H
G
I
C
D
L1
L2
L3
L4
L5
L6
L8
L9
L7
a b
c
d
e f
g
i
j
h
W3
(10)
W2
(14)
W1
(16)
M
L
g1 g2 g3
G1