Hitachi SET FREE Serie Manual De Instalación Y Funcionamiento página 50

Piping work and refrigerant charge
• For heat recovery systems (3 pipes)
Model
Unit A
Unit B
Connection kit
Gas (low pressure)
Gas
a
(high/low pressure)
Liquid
Gas (low pressure)
Gas
Piping sizes
b
(high/low pressure)
(Ø mm)
Liquid
Gas (low pressure)
Gas
c
(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.

Pipe sizes for RAS-(34-48)FSXN1E and RAS-(26-36)FSXNH(E) (Combination of 3 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.
Combination of FSXN1E base units
• For heat pump systems (2 pipes)
RAS-32FSXN1E-P
Model
Outdoor unit A
Combination
Outdoor unit B
unit
Outdoor unit C
Piping connection kit
High/Low
pressure gas
a
Liquid
High/Low
pressure gas
b
Liquid
High/Low
Piping size
pressure gas
(Ø mm)
c
Liquid
High/Low
pressure gas
d
Liquid
High/Low
pressure gas
e
Liquid
36
PMML0294A_rev.2_02-2014.indb 36
RAS-12FSXNH(E)-P
RAS-16FSXNH(E)
RAS-14FSXNH(E)
RAS-8FSXNH(E) RAS-8FSXNH(E)
RAS-6FSXNH(E) RAS-8FSXNH(E)
25.4
(25.4-28.58)
22.2
(22.2-25.4)
12.7
(12.7-15.88)
19.05
(19.05-22.2)
15.88
(15.88-19.05)
9.52
(9.52-12.7)
19.05
(19.05-22.2)
15.88
(15.88-19.05)
9.52
(9.52-12.7)
RAS-36FSXN1E RAS-38FSXN1E RAS-40FSXN1E RAS-42FSXN1E RAS-44FSXN1E RAS-46FSXN1E RAS-48FSXN1E
RAS-34FSXN1E
RAS-12FSXN1E RAS-12FSXN1E RAS-14FSXN1E RAS-16FSXN1E RAS-16FSXN1E RAS-16FSXN1E RAS-16FSXN1E RAS-16FSXN1E
RAS-12FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-14FSXN1E RAS-16FSXN1E RAS-16FSXN1E RAS-16FSXN1E
RAS-10FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-12FSXN1E RAS-14FSXN1E RAS-16FSXN1E
MC-30AN1
31.75 38.1
(31.75-34.9) (38.1-41.3) (38.1-41.3)
19.05 19.05
(19.05-22.2) (19.05-22.2) (19.05-22.2)
28.58 28.58
(28.58-31.75) (28.58-31.75) (28.58-31.75)
15.88 15.88
(15.88-19.05) (15.88-19.05) (15.88-19.05)
25.4 25.4
(25.4-28.58) (25.4-28.58) (25.4-28.58)
12.7 12.7
(12.7-15.88) (12.7-15.88) (12.7-15.88)
25.4 25.4
(25.4-28.58) (25.4-28.58) (25.4-28.58)
12.7 12.7
(12.7-15.88) (12.7-15.88) (12.7-15.88)
22.2 25.4
(22.2-25.4) (25.4-28.58) (25.4-28.58)
9.52 12.7
(9.52-12.7) (12.7-15.88) (12.7-15.88)
PMML0294A rev.2 - 07/2014
RAS-18FSXNH(E) RAS-20FSXNH(E)
RAS-10FSXNH(E) RAS-12FSXNH(E)
RAS-8FSXNH(E)
MC-20XN1
28.58 28.58
(28.58-31.75) (28.58-31.75)
22.2 22.2
(22.2-25.4) (22.2-25.4)
12.7 15.88
(12.7-15.88) (15.88-19.05)
19.05 22.2
(19.05-22.2) (22.2-25.4)
15.88 19.05
(15.88-19.05) (19.05-22.2)
9.52 9.52
(9.52-12.7) (9.52-12.7)
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)
A Main outdoor unit
B
Secondary outdoor units
C
C1 Connection kit 1
38.1 38.1 38.1
(38.1-41.3) (38.1-41.3)
19.05 19.05 19.05
(19.05-22.2) (19.05-22.2)
28.58 28.58 31.75
(28.58-31.75) (31.75-34.9)
15.88 15.88 19.05
(15.88-19.05) (19.05-22.2)
25.4 28.58 28.58
(28.58-31.75) (28.58-31.75)
12.7 12.7 12.7
(12.7-15.88) (12.7-15.88)
25.4 25.4 25.4
(25.4-28.58) (25.4-28.58)
12.7 12.7 12.7
(12.7-15.88) (12.7-15.88)
25.4 25.4 25.4
(25.4-28.58) (25.4-28.58)
12.7 12.7 12.7
(12.7-15.88) (12.7-15.88)
RAS-22FSXNH(E)
RAS-12FSXNH(E)
RAS-8FSXNH(E) RAS-10FSXNH(E)
28.58 28.58
(28.58-31.75) (28.58-31.75)
22.2 25.4
(22.2-25.4) (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)
19.05 22.2
(19.05-22.2) (22.2-25.4)
15.88 19.05
(15.88-19.05) (19.05-22.2)
9.52 9.52
(9.52-12.7) (9.52-12.7)
C2 Connection kit 2
1
Indoor units on left side
2 Indoor units on right side
MC-30AN1
38.1 38.1
(38.1-41.3) (38.1-41.3)
19.05 19.05
(19.05-22.2) (19.05-22.2)
31.75 31.75
(31.75-34.9) (31.75-34.9)
19.05 19.05
(19.05-22.2) (19.05-22.2)
28.58 28.58
(28.58-31.75) (28.58-31.75)
12.7 12.7
(12.7-15.88) (12.7-15.88)
28.58 28.58
(28.58-31.75) (28.58-31.75)
12.7 12.7
(12.7-15.88) (12.7-15.88)
25.4 25.4
(25.4-28.58) (25.4-28.58)
12.7 12.7
(12.7-15.88) (12.7-15.88)
RAS-24FSXNH(E)
RAS-12FSXNH(E)
RAS-12FSXNH(E)
28.58
(28.58-31.75)
25.4
(25.4-28.58)
15.88
(15.88-19.05)
25.4
(25.4-28.58)
22.2
(22.2-25.4)
12.7
(12.7-15.88)
25.4
(25.4-28.58)
22.2
(22.2-25.4)
12.7
(12.7-15.88)
38.1
(38.1-41.3)
19.05
(19.05-22.2)
31.75
(31.75-34.9)
19.05
(19.05-22.2)
28.58
(28.58-31.75)
12.7
(12.7-15.88)
28.58
(28.58-31.75)
12.7
(12.7-15.88)
28.58
(28.58-31.75)
12.7
(12.7-15.88)
14/07/2014 12:28:24