R410A DC Inverter VRF V4 Plus W Series 50Hz
MCAC-VTSM-2016-04
186 Installation
4.2 Select the Refrigerant Piping Type
Table.4-3
Pipe name
Code (As per the Fig. 4-2)
Main pipe
L1
Indoor unit main pipe
L2~L9
Indoor unit aux. pipe
a, b, c, d, e, f, g, h, i, j
Indoor unit branching pipe assembly
A, B, C, D, E, F, G, H, I
Main unit branching pipe assembly
L, M
Main unit connective pipe
g1, g2, g3, G1
4.3 Size of joint pipes for indoor unit
Capacity of indoor
unit (A)
Size of main pipe(mm)
Available branching
pipe
Gas side
Liquid side
A
<
166
Φ
15.9
Φ
9.5
FQZHN-01D
166
≤
A
<
230
Φ
19.1
Φ
9.5
FQZHN-01D
230
≤
A
<
330
Φ
22.2
Φ
9.5
FQZHN-02D
330
≤
A
<
460
Φ
28.6
Φ
12.7
FQZHN-03D
460
≤
A
<
660
Φ
28.6
Φ
15.9
FQZHN-03D
660
≤
A
<
920
Φ
31.8
Φ
19.1
FQZHN-03D
920
≤
A<1350
Φ
38.1
Φ
19.1
FQZHN-04D
4.4 Size of joint pipes for main unit
Base on the following tables, select the diameters of the main unit connective pipes. In case of the main
accessory pipe large than the main pipe, take the large one for the selection.
Example: parallel connect with the three main units 10+10+8 (the total capacity is 28HP), all indoor units total
capacity is 812,provided that the equivalent length of all pipes are
≥
90m, according to the Table 4-3 the main
pipe diameter are
Φ
31.8/
Φ
22.2; in according to all indoor unit capacity 1360, we could find out the master unit
diameter isΦ31.8/Φ19.1 base on Table 4-6. Take the large one for the selection, we final confirm the main pipe
diameter isΦ38.1/Φ22.2.