Refrigerant Piping - Hitachi RCIM-1.0FSN Installationsanleitung

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REFRIGERANT PIPING

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3 REFRIGERANT PIPING
3.1. PIPING CONNECTION
3.1.1. PIPING POSITION
Piping connection position is the following, which is
available from all directions, top, left or right.
Gas Piping
Liquid Piping
3.1.2. PIPING CONNECTION SIZE
In case of R407C
Model RCI
Gas Piping

Liquid Piping

In case of R410A
Model RCI
Gas Piping

Liquid Piping

Liquid Piping

Gas Piping

Unit Body
(mm)
1.0/1.5 2.0
12.70 15.88
6.35 6.35
(mm)
1.0/1.5 2.0
12.70 15.88
6.35 6.35
Special instructions for R410A
As R410A pressure is about 1.4 times higher than R407C,
improper installation may cause a serious trouble.
It is necessary to use the copper pipes, size of flare pipe
ends and flare nuts as shown below.
Flare Pipe Dimensions
Nominal
Diameters
1/4
3/8
1/2
5/8
Thickness of Copper Pipes
Nominal Outer
Diameters Diameters
1/4 6.35
3/8 9.53
1/2 12.70
5/8 15.88
Flare Nut Dimensions
Nominal
Diameters
1/4
3/8
1/2
5/8
(mm)
A
Outer
+0/-0.4
Diameters
R407C R410A
6.35 9.0 9.1
9.53 13.0 13.2
12.70 16.2 16.6
15.88 19.4 19.7
(mm)
R407C R410A
0.80 0.80
0.80 0.80
0.80 0.80
1.00 1.00
(mm)
B
Outer
Diameters
R407C R410A
6.35 17 17
9.53 22 22
12.70 24 26
15.88 27/29 29