SiE33-102 Refrigerant Piping
Installation Manual 147
The pressure regulator for the nitrogen released when doing the brazing should be set to 0.02 MPa (0.2
kg/cm²) or less.
6. Protection
against
Contamination
when Installing
Pipes
Take measures to prevent foreign materials like moisture and contamination from mixing into the
system.
Great caution is needed when passing copper tubes through walls.
Refrigerant piping
Location to be brazed
Taping
Manual
valve
Regulator
Nitrogen
Nitrogen
(V1849)
Place Installation Period Protection Method
Outdoor More than a month Pinch the pipe
Less than a month Pinch or tape the pipe
Indoor Regardless of the period
Si33-102.book Page 147 Tuesday, June 26, 2001 3:18 PM
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