For bottom side piping
a
b
Cabinet
Securing plate
Use the refrigerant pipe after putting
this part into the straight position
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).
Make sure to cut off the unnecessary part of
band (field-supplied). (It may cause abnormal
noise or condensate dripping).
Band (Field-supplied)
Securing plate
?
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
Outdoor
Wall
Sealing
Sealing
Pipe
Unit: mm
HP
Dimension
0.4 to 1.0
1.5
2.0
2.5 to 4.0
Liquid Piping Gas Piping Liquid Piping Gas Piping Liquid Piping Gas Piping Liquid Piping Gas Piping
a
450
395
450
395
410
350
410
350
b
107
107
107
107
120
120
120
120
c
343
288
343
288
290
230
290
230
16 REFRIGERANT PIPING WORK
!
D A N G E R
Use the specified non-flammable refrigerant (R410A) to the outdoor
unit in the refrigerant cycle. Do not charge material other than R410A
into the unit such as hydrocarbon refrigerants (propane or etc.),
oxygen, flammable gases (acetylene, etc.) or poisonous gases when
installing, maintaining and moving. These flammables are extremely
dangerous and may cause an explosion, a fire, and injury.
For the refrigerant piping work, vacuum pump and refrigerant
charge, the details shall be referred to “Installation and
Operation Manual ” of the outdoor unit.
?
N O T E
For RPK-(0.4-1.5)FSNH4M
•
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.
Refrigerant Piping Work
PMML0498 rev.1 - 11/2018 - P5417093
20
