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Hitachi SET FREE Series Instruction Manual page 49

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PIPING WORK AND REFRIGERANT CHARGE
Stop valve (Liquid)
Flaring
Liquid pipe (Ø12.7)
Gas "high/low pressure" pipe
Stop valve (Liquid)
Flaring
Liquid pipe (Ø15.88)
Gas "high/low pressure" pipe
( ** ) Example of options for brazing the pipes at this point
Expand
blow torch does not fall on the body of the stop valve, on the
compressor and cover or on the insulation bushings; insert a
metal plate in front of the oil return pipe: see on section
Connect the indoor units to the outdoor units using copper pipes
sure that they do not directly rest on or touch walls or other parts
this could cause strange noises).
.
Fully insulate the refrigerant pipes.
39
PMML0479 rev.2 - 02/2018
RAS-14FSXNPE
Stop valve
(High/low pressure gas)
Stop valve
(Low pressure gas)
Gas "low pressure" pipe
Gas "low pressure" pipe
RAS-18FSXNPE
Stop valve
(High/low pressure gas)
Stop valve
(Low pressure gas)
Gas "low pressure" pipe
Gas "low pressure" pipe
Accessory pipe
Adapter
Liquid pipe
RAS-16FSXNPE
Stop valve
(High/low pressure gas)
Stop valve (Liquid)
Flaring
Accessory pipe
OD15.88 OD12.7
(**)
Gas "low pressure" pipe
Gas "high/low pressure" pipe
( * ) If longer piping is needed add the following
Gas pipe
D A N G E R
Refer to the Accessories factory-supplied for the details of the
accessory pipes.
Ensure that the closing pipes of the high/low and low
Refer to the Accessories factory-supplied for the details of the
accessory pipes.
Ensure that the closing pipes of the high/low and low
Stop valve
(Low pressure gas)
Gas "low pressure" pipe
Gas "low pressure" pipe

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