Hitachi RCD-2.0FSR, Руководство по установке и эксплуатации

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13 REFRIGERANT PIPING WORK
Before refrigerant piping work, drain piping work and insulation are required. Refer to the Chapter “14 Drain piping” for details.
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D A N G E R
• Do not perform refrigerant piping work, drain pumping, and refrigerant charge without referring to the technical documentation of the
outdoor unit.
13.1 PIPING MATERIALS
1 Prepare locally-supplied copper pipes.
2 Select the appropriate pipe size according to the table below.
Unit: mm
Model Gas Pipe Liquid Pipe
RCD-0.8FSR
RCD-1.0FSR
RCD-1.5FSR
RCD-2.0FSR
Ø12.7 Ø6.35
RCD-2.5FSR
RCD-3.0FSR
RCD-4.0FSR
RCD-5.0FSR
RCD-6.0FSR
Ø15.88 Ø9.52
3 Select clean copper pipes. Make sure there is no dust and water inside. Use a pipe cutter when cutting the pipes, to avoid a
grind swarf generation. Do not use a saw or a grind stone to cut pipes. Blow the inside of the pipes with nitrogen or dry air, to
remove any dust or foreign materials before connecting pipes.
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N O T E
Refer to the technical documentation of the outdoor unit for detail on allowable pipe length.
• Notice for Refrigerant Pipe Ends
Correct
Correct
Correct
Hole
In case of getting the pipe through a
hole in the wall
Do not place the pipe directly on
the ground.
Attach a cap or put a plastic bag
over the pipe end
Attach a cap or put a plastic bag
over the pipe end
Attach a cap or put a plastic bag
over the pipe end
Rain water can come in
In case of rain
Rubber band
Hole
Incorrect
Incorrect
Incorrect
Due to the change of the refrigerant oil, the refrigerant cycle is more subject to foreign matters such as moisture, oxide film, and
fat. Be careful that moisture, dust or different refrigerant does not enter the refrigerant cycle during installation work. Otherwise
such parts as an expansion valve might bite into foreign matters and so the operation will be unavailable.
ENGLISH
REFRIGERANT PIPING WORK
PMML0549 rev.1 - 02/2021 - A10761230A 21