Refrigerant Piping Work - Carrier QUIETCO2OL Handbuch

REFRIGERANT PIPING WORK

Selection of Refrigerant Piping Size
The connection piping size for refrigeration unit is, in principle, as shown below,
but each installation should be determined by calculating pressure loss of the piping
and refrigerant flow speed and making sure no problem occurs in the cooling
capacity and oil return.
As refrigeration unit using CO2 refrigerant incurs pressure higher than when using
traditional refrigerants, it is necessary to choose adequate materials. Make sure that
piping's are connected to the appropriate pressurized equipment (EN378-2).
Product Suction line (R744)
MT30 9,52 mm (3/8")
MT50 9,52 mm (3/8")
MT67 9,52 mm (3/8")
MT100 9,52 mm (3/8")
LT75 9,52 mm (3/8")
LT167 12,7 mm (1/2")
Prevent contamination of foreign objects
such as dust, metal powder, oxide scale,
etc.
Since the compressor consists of high precision components, contaminants
generate scratches on the sliding surfaces, thereby increasing gas leak,
deteriorating performance, and causing excessive wear and seizure.
– Flow nitrogen gas during welding.
– Piping inside and outside must be clean.
Liquid line (R744)
9,52 mm (3/8")
9,52 mm (3/8")
9,52 mm (3/8")
9,52 mm (3/8")
9,52 mm (3/8")
9,52 mm (3/8")
Water line (Water Cooled
PS
QUIETCO2OL)
80 bars 28,57 mm (1"1/8)
80 bars 28,57 mm (1"1/8)
80 bars 31,62 mm (1"3/8)
80 bars 31,62 mm (1"3/8)
80 bars 28,57 mm (1"1/8)
80 bars 28,57 mm (1"1/8)
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