Midea VC Pro Series User Manual

VC Pro VRF 50/60Hz
155
Part 3 - System Design and Installation
4.4 Selecting Piping Diameters
Tables 3-4.4 to 3-4.8, below, specify the required pipe diameters for the indoor and outdoor piping. The main pipe (L
1
) and
first indoor branch joint (A) should be sized according to whichever of Tables 3-4.4 and 3-4.5 indicates the larger size.
Figure 3-4.3: Selecting piping diameters
Legend
L
1
Main pipe
Figures in parentheses indicate
indoor unit capacity indexes.
L
2
to L
16
Indoor main pipes
a to q
Indoor auxiliary pipes
A to P
Indoor branch joints
S, R
Outdoor branch joints
g1 to g3, G
1
Outdoor connection pipes
Table 3-4.4: Main pipe
1
(L
1
), indoor main pipes (L
2
to L
16
) and indoor branch joint kits
Total capacity indexes of indoor units
Gas pipe (mm)
Liquid pipe (mm)
Branch joint kit
Capacity indexes < 168
Φ15.9
Φ9.53
FQZHN-01D
168 ≤ Capacity indexes < 224
Φ19.1
Φ9.53
FQZHN-01D
224 ≤ Capacity indexes < 330
Φ22.2
Φ9.53
FQZHN-02D
330 ≤ Capacity indexes < 470
Φ28.6
Φ12.7
FQZHN-03D
470 ≤ Capacity indexes < 710
Φ28.6
Φ15.9
FQZHN-03D
710 ≤ Capacity indexes < 1040
Φ31.8
Φ19.1
FQZHN-03D
1040 ≤ Capacity indexes < 1540
Φ38.1
Φ19.1
FQZHN-04D
1540 ≤ Capacity indexes < 1800
Φ41.3
Φ19.1
FQZHN-05D
1800 ≤ Capacity indexes < 2450
Φ44.5
Φ22.2
FQZHN-05D
2450 ≤ Capacity indexes < 2690
Φ54.0
Φ25.4
FQZHN-06D
2690 ≤ Capacity indexes
Φ54.0
Φ28.6
FQZHN-07D
Notes:
1. The main pipe (L
1
) and first indoor branch joint (A) should be sized according to whichever of
Tables 3-4.4 and 3-4.5 indicates the larger size.
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)

Midea VC Pro Series Specifications

General

Brand	Midea
Model	VC Pro Series
Category	Air Conditioner
Language	English