Hitachi RPI-4.0FSN4E - 8 PIPING WORK AND REFRIGERANT CHARGE; For heat recovery systems (3 pipes)

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