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Installation
Si39-406
24
General Information
6. Flushing.
Block the end of the pipe with the insulation of your hand.
↓
When the gas pressure becomes too great to contain remove insulation quickly. (First flush)
↓
Block the end of the pipe with insulation again.
↓
(Carry out second flushing)
(The nature and amount of the extraneous material inside the pipe can be checked during flushing
by placing a rag lightly over the end of the pipe. In the unlikely case that even a small quantity of
moisture is found then the inside of the pipe should be dried out thoroughly.)
Action:
1. Flush the inside of the pipe with nitrogen gas. (Until such time as the moisture disappears.)
2. Carry out a thorough vacuum drying operation. (See page 34)
Close the main valve on the nitrogen cylinder.
Repeat the above operation for unit B.
When the liquid pipe operations have been completed then do the same with the gas pipes.
Choice of
Materials for
Refrigerant
Piping
a) Refrigerant piping
The piping used must meet the requirements of the JIS standard or equivalent. (Size, material,
thickness, etc.)
Specification:
Oxidized phosphorous seamless copper pipe
Long pipe lengths or coiled pipe (copper pipe with heat insulation coating) should be used to
avoid the necessity for frequent brazing.
(* Make sure the thickness and material shall be selected in accordance with following table.)
Size of Refrigerant Piping
*The thickness and material shall be selected in accordance with local code.
b) Brazed joints and special branches
1. General use (L bend joint, socket joint, T joint, etc.)
Joints must meet the requirements of the relevant JIS standard. (Size, materials, thickness, etc.)
2. Special branches
The Daikin outdoor unit multi connection kit, REFNET joint, REFNET header or Reducing
socket should be used.
Outside Diameter (mm)
Material
φ
1/4
(φ
6.4)
0
φ
3/8
(φ
9.5)
0
φ
1/2
(φ
12.7)
0
φ
5/8
(φ
15.9)
0
φ
3/4
(φ
19.1)
1/2H
φ
7/8
(φ
22.2)
1/2H
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...