Midea V6-i Series - Page 85

V6-i VRF 50Hz
84
Midea
V6-i Series Engineering Data Book
3.4 Selecting Piping Diameters
Tables 3-3.4 to 3-3.5 below, specify the required pipe diameters for the indoor and outdoor piping. The main pipe (L1) and
first indoor branch joint (A) should be sized according to whichever of Tables 3-3.4 and 3-3.5 indicates the larger size.
Figure 3-3.3: Selecting piping diameters
Table 3-3.4: Main pipe
1
(L1), indoor main pipes (L2 to L5) and indoor branch joint kits
Total capacity indexes of indoor units
Gas pipe (mm)
Liquid pipe (mm)
Branch joint kit
Capacity indexes < 166
Φ15.9
Φ9.53
FQZHN-01D
166 ≤ Capacity indexes < 230
Φ19.1
Φ9.53
FQZHN-01D
230 ≤ Capacity indexes < 330
Φ22.2
Φ9.53
FQZHN-02D
330 ≤ Capacity indexes < 470
Φ25.4
Φ12.7
FQZHN-03D
Notes:
1. The main pipe (L1) and first indoor branch joint (A) should be sized according to whichever of Tables 3-3.3 and 3-3.4
indicates the larger size.
Table 3-3.5: Main pipe
1
(L1) and first indoor branch joint (A)
Capacity of
outdoor unit
Equivalent length of all liquid pipes and gas pipes < 90m
Equivalent length of all liquid pipes and gas pipes ≥ 90m
Gas pipe (mm)
Liquid pipe (mm)
Branch joint kit
Gas pipe (mm)
Liquid pipe (mm)
Branch joint kit
7/8HP
Φ22.2
Φ9.53
FQZHN-01D
Φ25.4
Φ12.7
FQZHN-03D
9/10HP
Φ22.2
Φ9.53
FQZHN-02D
Φ25.4
Φ12.7
FQZHN-03D
12HP
Φ25.4
Φ12.7
FQZHN-03D
Φ25.4
Φ12.7
FQZHN-03D
Notes:
1. The main pipe (L1) and first indoor branch joint (A) should be sized according to whichever of Tables 3-3.4 and 3-3.5 indicates the larger size.
Table 3-3.6: Indoor auxiliary pipes (a to f)
Capacity of indoor unit
(kW)
Gas pipe (mm)
Liquid pipe (mm)
≤ 4.5
Φ12.7
Φ6.35
≥ 5.6
Φ15.9
Φ9.53
Outdoor Unit
intdoor Units
N1
(56)
N3
(45)
N5
(45)
N6
(56)
N2
(56)
N4
(45)
A
B
D
E
C
a
b
c
e
f
d
L1
L2
L5
L3
L4
Legend
L1
Main pipe
Figures in
parentheses indicate
indoor unit capacity
indexes.
L2 to L5
Indoor main pipes
a to f
Indoor auxiliary pipes
A to E
Indoor branch joints