Hitachi RCIM-1.5FSN4 - 14 REFRIGERANT PIPING; 14.1 PIPING POSITION; 14.2 PIPING CONNECTION SIZE

14 REFRIGERANT PIPING
Before refrigerant piping work, drain piping work and insulation
are required. Refer to the 'UDLQSLSLQJ for details.
 D A N G E R
• Do not perform refrigerant piping work, drain pumping, and
refrigerant charge without referring to Installation and Operation
Manual of the outdoor unit.
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outdoor unit in the refrigerant cycle. Do not charge the unit with
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poisonous gases when installing, maintaining and moving the
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14.1 PIPING POSITION
177
140
180
145
94
521
Wiring connection
Drain pipe
connection
Refrigerant liquid pipe
connection
Refrigerant gas pipe
connection
(Drain pipe)
(Drain pipe)
(Gas pipe)
(Liquid pipe)
(Gas pipe)
(Liquid pipe)
14.2 PIPING CONNECTION SIZE
1 Prepare locally-supplied copper pipes.
2 Select the appropriate pipe size according to the table
below:
mm (in.)
Model Gas Pipe Liquid Pipe
RCIM-0.6FSN4
RCIM-0.8FSN4
RCIM-1.0FSN4
RCIM-1.5FSN4
RCIM-2.0FSN4
Ø12.7 (1/2) Ø6.35 (1/4)
RCIM-2.5FSN4 Ø15.88 (5/8) Ø9.52 (3/8)
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.
 N O T E
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 N O T E
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In case of getting the pipe through a hole in the wall.
Correct
Incorrect
HoleHole
Attach a cap or put a plastic bag
Correct
Incorrect
Hole
Hole
Cap or plastic bag
Do not place the pipe directly on the ground.
Correct Incorrect
Correct
Incorrect
Cap or plastic bag
In case of rain
Correct Incorrect
c
Rubber Band
Rain water
can come in.
Correct
Incorrect
Rain water can
come in
Rubber band
Cap or plastic bag
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Refrigerant piping
PMML0363A rev.2 - 08/2016 - P541655922