Hitachi RAS-8FSXN - Page 53

¿ Example of installation (38 HP: 2 pipes)
Connection of front or rear pipes Lower pipe connection
A
B
C1
E
F
C2
E
G
H
D2
D1
I
I
A. Gas pipe (field-supplied).
B. Liquid pipe (field-supplied).
C1. Gas connection kit 1.
C2. Gas connection kit 2.
D1. Liquid connection kit 1.
D2. Liquid connection kit 2.
E. Accessory for connection of pipes (L-shaped).
F. Outdoor unit 1.
G. Outdoor unit 2.
H. Outdoor unit 3.
I. Accessory for connection of pipes (Z-shaped).
¿ Size of pipes (ø mm) and selection of multikit (2 pipes)
L3
L2
H2
H1
L2
H5
L5
A
(6)
(1)
L3
F
B
C
D
E
(3)
4 4 4
4
4
4
3
3
111
2
3
(6)
F F
F
F F
L3 L3
A: main outdoor unit B, C: secondary outdoor units D: connection kit 1 E: connection kit 2 F: indoor units
Size of pipes
1. Pipe diameter for the outdoor unit.
2. Diameter of the main pipe (from the base unit or connection kit 1 to the first branch)
(2)
.
HP outdoor unit
Equivalent pipe length < 100 m
HP outdoor unit
Equivalent pipe length < 100 m
Gas Liquid Gas Liquid
8 ø19.05 ø9.53 (18-24) ø28.6 ø15.88
10 ø22.2 ø9.53 (26-34) ø31.75 ø19.05
(12/14) ø25.4 ø12.7 (36-54) ø38.1 ø19.05
16 ø28.6 ø12.7 — — —
3. Pipe diameter after first branch
(3)
.
Total HP indoor unit Gas Liquid Total HP indoor unit Gas Liquid
< 6 ø15.88 ø9.53 (16-17.99) ø28.6 ø12.7
(6-8.99) ø19.05 ø9.53 (18-25.99) ø28.6 ø15.88
(9-11.99) ø22.2 ø9.53 (26-35.99) ø31.75 ø19.05
(12-15.99) ø25.4 ø12.7 > 36 ø38.1 ø19.05
3 Piping work and
refrigerant charge
46
SMGB0065 rev. 1 - 12/2010