Hitachi Set Free Série Manuel D'installation page 52

Piping work and refrigerant charge
• For heat recovery system (3 pipes)
Model
Unit A
Unit B
Unit C
Connection kit
Gas (low pressure)
Gas
a
(high/low pressure)
Liquid
Gas (low pressure)
Gas
b
(high/low pressure)
Liquid
Gas (low pressure)
Piping sizes Gas
c
(Ø mm)
(high/low pressure)
Liquid
Gas (low pressure)
Gas
d
(high/low pressure)
Liquid
Gas (low pressure)
Gas
e
(high/low pressure)
Liquid
Perform the installation of the outdoor unit and piping connection according to the figure. Refer to the table for the outdoor unit model,
the piping connection kit model and the piping diameter.
If the specified main refrigerant piping on the table is not available on site, follow the allowable piping size in parentheses.
When using the main refrigerant piping indicated in parentheses, prepare an appropriate reducer on site.
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Pipe sizes for RAS-(50-54)FSXN1E (Combination of 4 units)
Install the outdoor units and connect the refrigerant pipes as shown in the diagram. Please refer to the table to determine the appropri-
ate connection kit and the diameter of the pipes for each unit.
38
PMML0294A_rev.2_02-2014.indb 38
RAS-24FSXNH(E)-P
RAS-28FSXNH(E)
RAS-26FSXNH(E)
RAS-10FSXNH(E) RAS-12FSXNH(E)
RAS-8FSXNH(E) RAS-8FSXNH(E)
RAS-8FSXNH(E) RAS-8FSXNH(E)
31.75
(31.75-34.9) (31.75-34.9)
25.4
(25.4-28.58) (28.58-31.75)
19.05
(19.05-22.2) (19.05-22.2)
28.58
(28.58-31.75) (28.58-31.75)
22.2
(22.2-25.4) (22.2-25.4)
15.88
(15.88-19.05) (15.88-19.05)
22.2
(22.2-25.4) (25.4-28.58)
19.05
(19.05-22.2) (22.2-25.4)
9.52
(9.52-12.7) (12.7-15.88)
19.05
(19.05-22.2) (19.05-22.2)
15.88
(15.88-19.05) (15.88-19.05)
9.52
(9.52-12.7) (9.52-12.7)
19.05
(19.05-22.2) (19.05-22.2)
15.88
(15.88-19.05) (15.88-19.05)
9.52
(9.52-12.7) (9.52-12.7)
D
D
C3
PMML0294A rev.2 - 07/2014
RAS-30FSXNH(E) RAS-32FSXNH(E)
RAS-12FSXNH(E) RAS-12FSXNH(E)
RAS-10FSXNH(E) RAS-12FSXNH(E)
RAS-8FSXNH(E) RAS-8FSXNH(E)
MC-30XN1
31.75 31.75
(31.75-34.9) (31.75-34.9)
28.58 28.58
(28.58-31.75) (28.58-31.75)
19.05 19.05
(19.05-22.2) (19.05-22.2)
28.58 28.58
(28.58-31.75) (28.58-31.75)
22.2 22.2
(22.2-25.4) (22.2-25.4)
15.88 15.88
(15.88-19.05) (15.88-19.05)
25.4 25.4
(25.4-28.58) (25.4-28.58)
22.2 22.2
(22.2-25.4) (22.2-25.4)
12.7 12.7
(12.7-15.88) (12.7-15.88)
19.05 22.2
(22.2-25.4) (25.4-28.58)
15.88 19.05
(19.05-22.2) (22.2-25.4)
9.52 9.52
(9.52-12.7) (12.7-15.88)
19.05 19.05
(19.05-22.2) (19.05-22.2)
15.88 15.88
(15.88-19.05) (15.88-19.05)
9.52 9.52
(9.52-12.7) (9.52-12.7)
C3
RAS-34FSXNH(E) RAS-36FSXNH(E)
RAS-12FSXNH(E) RAS-12FSXNH(E)
RAS-12FSXNH(E) RAS-12FSXNH(E)
RAS-10FSXNH(E) RAS-12FSXNH(E)
31.75 31.75
(31.75-34.9) (38.1-41.3)
28.58 28.58
(28.58-31.75) (28.58-31.75)
19.05 19.05
(19.05-22.2) (19.05-22.2)
28.58 28.58
(28.58-31.75) (28.58-31.75)
22.2 25.4
(25.4-28.58) (25.4-28.58)
15.88 15.88
(15.88-19.05) (15.88-19.05)
25.4 25.4
(25.4-28.58) (25.4-28.58)
22.2 22.2
(22.2-25.4) (22.2-25.4)
12.7 12.7
(12.7-15.88) (12.7-15.88)
25.4 25.4
(25.4-28.58) (25.4-28.58)
22.2 22.2
(22.2-25.4) (22.2-25.4)
12.7 12.7
(12.7-15.88) (12.7-15.88)
19.05 22.2
(22.2-25.4) (25.4-28.58)
15.88 19.05
(19.05-22.2) (22.2-25.4)
9.52 9.52
(9.52-12.7) (12.7-15.88)
A Main outdoor unit
B
C Secondary outdoor units
D
C1
Connection kit 1
C2 Connection kit 2
C3 Connection kit 3
1 Indoor units on left side
2 Indoor units on right side
38.1
28.58
19.05
28.58
25.4
15.88
25.4
22.2
12.7
25.4
22.2
12.7
25.4
22.2
12.7
14/07/2014 12:28:24