Refrigerant Piping - Hitachi RPK-0.8FSNM Installationsanleitung

3. REFRIGERANT PIPING

3.1. PIPING CONNECTION
3.1.1. PIPING POSITION
Position of piping connection is the following, which is
available from all directions, top, left or right.
RPK-0.8 ~ 2.0
I
For Left Side
Insulation
Piping
L1
Model RPK
Gas Piping
Liquid Piping
RPK-2.5 ~ 4.0
I
For Left Side
Insulation
Piping
L1
CAUTION:
Do not twist the pipe when bending the tube.
Model RPK
Gas Piping
Liquid Piping
1. Right Side Piping
Cut the corner using a plastic cutter as shown below and
remove sharp edges completely.
Contour of the Unit
142
For Right Side Piping
L2
For Rear Side Piping
(mm)
HP L1 L2
0.8~1.5 410 268
2.0 440 298
0.8~2.0 470 328
Contour of the Unit
125
For Right Side Piping
L2
For Rear Side Piping
(mm)
HP L1 L2
2.5~4.0 550 645
2.5~4.0 480 575
Right Side
Cover
Plastic Cutter
Cut this corner
REFRIGERANT PIPING
2. Left Piping
Cut the corner at the left side using a plastic cutter as for
the right side piping.
Left Side
Cover
3. Rear Side Piping
Make a hole by removing the knock-out plate at the rear
side.
3.1.2. SIZE OF PIPING CONNECTION
In case of R407C
Model RPK 0.8/1.0/1.5
Gas Piping 12.7
Liquid Piping 6.35
In case of R410A (FSNE only)
Model RPK 0.8/1.0/1.5
Gas Piping 12.7
Liquid Piping 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
3
5
Right
Side
Cover
Right Side Cover
(mm)
2.0 2.5/3.0/3.5
15.88 15.88
6.35 9.53
(mm)
2.0 2.5/3.0/3.5 4.0
15.88 15.88 15.88
6.35 9.53 9.53
(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