Hitachi RAS-8FSXN - Page 61

¿ Pipe connection kit (optional)
No. Mode
Application in outdoor units
Model Notes
Outdoor unit No. of outdoor units
Pipe connection kit Heat recovery system
RAS-
(20-24)FSXN
2 MC-20XN
For three pipes:
• Gas, high pressure: 1 part.
•
Gas, low pressure: 1 part.
• Liquid: 1 part.
RAS-
(26-36)FSXN
2 MC-21XN
RAS-
(38-54)FSXN
3 MC-30XN
¿
Example of installation (38 HP: 3 pipes)
Connection of front or rear pipes Lower pipe connection
D1
J
N
D2
I
N
H
G
F2
E2
G
F1
E1
C
B
A
D1
J
K
I
H
G
F2
K
E2
D2
G
F1
E1
C
B
A
D1
J
K
I
H
G
F2
K
E2
D2
G
F1
E1
C
B
A
A. Gas pipe, low pressure (field-supplied).
B. Gas pipe, high pressure (field-supplied).
C. Liquid pipe (field-supplied).
D1. Gas connection kit, low pressure 1.
D2. Gas connection kit, low pressure 2.
E1. Gas connection kit, high pressure 1.
E2. Gas connection kit, high pressure 2.
F1. Liquid connection kit 1.
F2. Liquid connection kit 2.
G. Accessory for connection of pipes (L-shaped).
H. Outdoor unit 3.
I. Outdoor unit 2.
J. Outdoor unit 1.
K. Accessory for connection of pipes (Z-shaped).
N. Accessory for connection of pipes.
¿ Size of pipes (ø mm) and selection of multikit (3 pipes)
a
H4
b
L3
CH
L4
c
H3
L5
d
F
CH
L3
L4
L2
H2
H1
L1
H5
A
(6)
(1)
(3)
(12)
G
B
C
D
E
4
6
3
3
3
111
2
6
6
6
4
6
4
6
4
5
4
4
(6)
44
L3 L3
CH CH
66
GG
CH
L3
G
G G
66
d e
G
a
CH
c e
6
4
CH CH
G G G
G G G
d
66
A: main outdoor unit B, C: secondary outdoor units D: connection kit 1 E: connection kit 2 G: indoor units
3 pipes (high and low pressure gas, liquid) 2 pipes (gas, liquid) 2 pipes (low pressure gas, liquid)
Size of pipes
1. Pipe diameter for the outdoor unit.
3 Piping work and
refrigerant charge
54
SMGB0065 rev. 1 - 12/2010