Refrigerant Piping Work - Hitachi RPK-0.4FSRM Installations- Und Betriebshandbuch

Refrigerant Piping Work

For bottom side piping
Securing plate
b
Use the refrigerant pipe after putting
this part into the straight position
HP
Dimension
Liquid Piping
a 450
b 107
c 343
14 REFRIGERANT PIPING WORK
For the refrigerant piping work, vacuum pump and refrigerant charge, the details shall be referred to "Installation and Operation
Manual " of the outdoor unit.
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N O T E
For RPK-(0.4-1.5)FSRHM
• The optional expansion valve kit is required for the refrigerant piping work. Refer to the "Installation and Operation Manual of the Expansion Valve
Kit" for refrigerant piping procedures, pipe sizes, additional refrigerant charge and the number of connectable units.
• The temperature of the liquid piping between the expansion valve kit and the indoor units becomes lower than the standard indoor units. Additional
insulation work should be required for the liquid piping depending on the operating conditions.
15 PMML0552 rev.1 - 02/2021 - A10635790A
Cabinet
a
0.4 to 1.0
Gas Piping Liquid Piping
395 450
107 107
288 343
For installing securing plate (only 2.0 to 4.0 HP)
Bend the pipe, place it in the bottom space on the rear side of
the unit and secure the pipe to the securing plate with band
(field-supplied).
Band (Field-supplied)
Make sure to cut off the unnecessary part of
band (field-supplied). (It may cause abnormal
noise or condensate dripping).
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N O T E
Make sure to seal a hole in the wall completely in order to prevent
rainwater and outdoor air from entering. When using putty for sealing,
avoid contact with the wall since it may result in oil stain.
Indoor
Sealing
Pipe
1.5
Gas Piping Liquid Piping
395 410
107 120
288 290
Securing plate
Wall
Outdoor
Sealing
2.0 2.5 to 4.0
Gas Piping Liquid Piping
350 410
120 120
230 290
Unit: mm
Gas Piping
350
120
230