Piping Size And Multi-Kit Fsg/Fsg1 - Hitachi FSG1 Series Technical Catalogue

13.1.3. PIPING SIZE AND MULTI-KIT FSG/FSG1

In addition to the Epoch-making "Uni-Piping System", where
the same pipe size as the main refrigerant pipe can be
utilised, the "Down-Pipe System" is also available for piping
cost reduction.
As indicated the table below, "Down pipe system is
recommended from 16 to 30HP, because of cost reduction
is reached using it.
Pipe Size System
Outdoor Unit Uni-Piping Down-Size
¡
RAS-5FSG
¡
RAS-8FSG
¡
RAS-10FSG
Ä
RAS-16FSG
Ä
RAS-20FSG
Ä
RAS-24FSG1
Ä
RAS-30FSG1
¡: Available
Ä: Not recommended
?
NOTE:
§ In case of Uni-Piping system, the pipe size and the
Multi-Kit from Outdoor unit to the last Multi-Kit is the
same.
§ The Capacity decrease ratio is big with the pipe
indicated with ( ). Therefore, do not select the pipe
size of ( ) except for the case that the pipe with
recommended size cannot be prepared.
§ In case that the Multi-Kit sizes after the 2
st
higher than the 1 Multi-kit, use the Multi-kit with the
st
same size as the 1 Multi-kit.
§ In case that the pipe size after the 1
than the pipe size between the outdoor unit and the 1
branch, use the pipe with the same size as the pipe
size between the outdoor unit and the 1
See tables #
REFRIGERANT PIPING AND REFRIGERANT CHARGE
-
¡
¡
¡
¡
¡
¡
nd
Multi-Kit is
st
branch is bigger
st
st
branch.
¡
st
Table : Outdoor Unit ~ 1
Pipe Size (B B B B mm)
Outdoor Unit
Gas
RAS-5FSG 19.05
RAS-8FSG 25.4 (22.2)
RAS-10FSG 28.6 (25.4)
RAS-16FSG 31.75 (28.6)
RAS-20FSG 38.1 (34.92)
RAS-24FSG1 38.1 (34.92)
RAS-30FSG1 44.45 (41.3)
The pipe size should be the same of the piping connection hole of the outdoor
unit.
¢
st
Table : 1 Multi-Kit ~ Last Branch
Pipe Size (B B B B mm)
Total Capacity of
Indoor Units Gas
HP<5 19.05
22.2
5£HP<7.5
25.4 (22.2)
7.5£HP<10
10£HP<13 28.6 (25.4)
31.75 (28.6)
13£HP<16
16£HP<18 38.1 (34.92)
38.1 (34.92)
18£HP<25
25£HP 44.45 (41.3)
The multi-kit selected must be compatible with pipe selected in table (1). See
chapter 13.2 for more information
£
Table : Multi-Kit ~ Indoor Unit
Pipe Size (B B B B mm)
Indoor Unit Capacity
(HP)
Gas
0.8 and 1.0 12.7
1.5 12.7
2.0 and 2.3 15.88
2.5 and 3.0 15.88
4.0 and 5.0 19.05
The pipe size shall be the same size of the piping connection hole of the
Indoor Unit.
?
NOTE:
§ In case that the liquid pipe for the indoor unit with the
capacity 1.5 HP to 2.3 HP is longer than 15m, use the
pipe with diameter of Æ9.53.
§ The pipe shown in the above table is applicable for
both: the line branch and the header branch.
¤
Table : Header Branch
Applicable Gas Piping
Model Size Ø a
RAS-5FSG 19.05
RAS-8FSG 25.4 (22.2)
RAS-10FSG 28.6 (25.4)
RAS-16FSG
RAS-20FSG
28.6 or lower
RAS-24FSG1
RAS-30FSG1
13
Multi-Kit
Liquid
Multi-Kit
STD Longer
9.53 12.7 E-52ME1
12.7 12.7 E-82ME1
12.7 15.88 E-102ME1
E-162M1/
15.88 19.05
E-152S
15.88 19.05 E-202M1
19.05 19.05 E-242S
22.2 22.2 E-302S
Multi-Kit
Liquid
9.53 E-52ME1
9.53 E-82ME1
E-102ME1
12.7
(E-82ME1)
12.7 E-102ME1
15.88 E-162M1/ E-152S
15.88 E-242S / E-202M1
19.05 E-242S
22.2 E-302S
Maximum Length of
Liquid Pipe
Liquid
6.35 30m
6.35 15m
6.35 15m
9.53 30m
9.53 30m
Model of Multi-Kit
2~4 2~6 2~8
Branches Branches Branches
E-54SE – E-58SE
– E-86SE3 E-88SE3
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