Rpi - Ducted Indoor Unit (0.8-1.5)Fsn2E - Hitachi RCI Service Manual

3 Piping work and
refrigerant charge

3.5.5 RPI - Ducted indoor unit (0.8-1.5)FSN2E

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Gas refrigerant pipe installation
The correct position for the gas refrigerant pipe connection is shown below.
Models
RPI
N O T E
When installing the pipes, leave enough space for maintenance work in the electrical box of the unit.
Dimensions of the flare and thickness of the copper pipe
Nominal diameter
mm inches
Ø6.35 1/4
Ø9.53 3/8
Ø12.70 1/2
Ø15.88 5/8
98
SMGB0063 rev. 1 - 10/2010
3
1
2
Gas pipe mm (inches)
Thickness Measurement A
mm
0.4 mm
0.80 9.1
0.80 13.2
0.80 16.6
1.00 19.7
Ø12.7 (1/2)
+ 0
/
-
Liquid pipe mm (inches)
Ø6.35 (1/4)