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Si39-406
Installation
General Information
21
Method for
Replacing
Nitrogen
(Brazing)
If brazing work is carried out without passing nitrogen gas through the pipes which are being
brazed then this allows the formation of oxidation bubbles on the inside surface of the pipes. These
oxidation bubbles are then carried along inside the pipes to cause damage to various members of
the system such as valves or compressors and the system ceases to function properly.
In order to avoid this problem
nitrogen is passed through the pipes while the soldering work is
being carried out
. This operation is known as nitrogen replacement. (Air is replaced by nitrogen)
This is
standard work practice for all brazing work
.
Important points:
1. The gas used must be nitrogen (oxygen, carbon dioxide and flon should not be used.)
2. A pressure regulator must be used.
Summary of Contents for REYQ96MTJU
Page 1: ...Design Installation Testing Instruction R410A Heat Recovery 60Hz REYQ96MTJU Si39 406...
Page 6: ...Si39 406 iv Table of Contents...
Page 34: ...Installation Si39 406 28 General Information Flaring Procedure...
Page 68: ...Installation Si39 406 62 General Information Caution Caution label 3P124617 4P124614...
Page 114: ...Appendix Si39 406 108 General Information 3P135887 1...
Page 126: ...Appendix Si39 406 120 General Information 7 8 3 BS Unit BSVQ36MVJ BSVQ60MVJ 4D045338...
Page 128: ...Appendix Si39 406 122 General Information 7 9 2 Field Wiring REYQ96MTJU 3D042647A...
Page 156: ...Refrigerant Piping Si39 406 150 Installation Manual REYQ96MTJU...
Page 158: ...Refrigerant Piping Si39 406 152 Installation Manual REYQ96MTJU...
Page 230: ...Precautions for New Refrigerant R410A Si39 406 224 Precautions for New Refrigerant R410...
Page 236: ...375 Park Avenue Suite 3308 New York N Y 10152 info daikinac com www daikinac com...