Hitachi FSG Series, Технический каталог

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REFRIGERANT PIPING AND REFRIGERANT CHARGE
13
/7
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
¡ ¡
RAS-16FSG
Ä
¡
RAS-20FSG
Ä
¡
RAS-24FSG1
Ä
¡
RAS-30FSG1
Ä
¡
¡
: 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
nd
Multi-Kit is
higher than the 1
st
Multi-kit, use the Multi-kit with the
same size as the 1
st
Multi-kit.
§
In case that the pipe size after the 1
st
branch is bigger
than the pipe size between the outdoor unit and the 1
st
branch, use the pipe with the same size as the pipe
size between the outdoor unit and the 1
st
branch.
Table
¡
: Outdoor Unit ~ 1
st
Multi-Kit
Pipe Size (
BBBB
mm)
Liquid
Outdoor Unit
Gas
STD Longer
Multi-Kit
RAS-5FSG 19.05 9.53 12.7 E-52ME1
RAS-8FSG 25.4 (22.2) 12.7 12.7 E-82ME1
RAS-10FSG 28.6 (25.4) 12.7 15.88 E-102ME1
RAS-16FSG 31.75 (28.6) 15.88 19.05
E-162M1/
E-152S
RAS-20FSG 38.1 (34.92) 15.88 19.05 E-202M1
RAS-24FSG1 38.1 (34.92) 19.05 19.05 E-242S
RAS-30FSG1 44.45 (41.3) 22.2 22.2 E-302S
The pipe size should be the same of the piping connection hole of the outdoor
unit.
Table
¢
: 1
st
Multi-Kit ~ Last Branch
Pipe Size (
BBBB
mm) Total Capacity of
Indoor Units
Gas Liquid
Multi-Kit
HP<5 19.05 9.53 E-52ME1
5
£
HP<7.5 22.2 9.53 E-82ME1
7.5
£
HP<10
25.4 (22.2) 12.7
E-102ME1
(E-82ME1)
10
£
HP<13
28.6 (25.4) 12.7 E-102ME1
13
£
HP<16 31.75 (28.6) 15.88 E-162M1/ E-152S
16
£
HP<18
38.1 (34.92) 15.88 E-242S / E-202M1
18
£
HP<25 38.1 (34.92) 19.05 E-242S
25
£
HP 44.45 (41.3) 22.2 E-302S
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 (
BBBB
mm)
Indoor Unit Capacity
(HP)
Gas Liquid
Maximum Length of
Liquid Pipe
0.8 and 1.0 12.7 6.35 30m
1.5 12.7 6.35 15m
2.0 and 2.3 15.88 6.35 15m
2.5 and 3.0 15.88 9.53 30m
4.0 and 5.0 19.05 9.53 30m
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
Æ
9.53.
§
The pipe shown in the above table is applicable for
both: the line branch and the header branch.
Table
¤
: Header Branch
Model of Multi-Kit
Applicable
Model
Gas Piping
Size Ø a
2~4
Branches
2~6
Branches
2~8
Branches
RAS-5FSG 19.05 E-54SE – E-58SE
RAS-8FSG 25.4 (22.2)
RAS-10FSG 28.6 (25.4)
RAS-16FSG
RAS-20FSG
RAS-24FSG1
RAS-30FSG1
28.6 or lower
– E-86SE3 E-88SE3
See tables #