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Si39-406
Refrigerant Piping
Installation Manual REYQ96MTJU
155
FLARE SHAPE and FLARENUT TIGHTENING TORQUE
<Precautions when connecting pipes>
See the following table for flare part machining dimensions.
When connecting the flare nuts, apply refrigerant oil to the inside and outside of the flares and
turn them three or four times at first. (Use ester oil or ether oil.)
See the following table for tightening torque.
(Applying too much torque may cause the flares to crack.)
After all the piping has been connected, use nitrogen to perform a gas leak check.
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you
may follow the installation method mentioned below.
After the work is finished, make sure to check that there is no gas leak.
When you keep on tightening the flare nut with a spanner, there is a point where the tightening
torque suddenly increases. From that position, further tighten the flare nut the angle shown below:
(in.)
Disposal
requirements
Dismantling of the unit, treatment of the refrigerant, oil and eventual other parts, should be done in
accordance with the relevant local and national regulations.
pipe size (in.)
tightening
torque (ft.-lbf)
A (in.)
flare shape (in.)
φ
3/8”
24.1 - 29.4
0.504 - 0.520
φ
1/2”
36.5 - 44.5
0.638 - 0.654
φ
5/8”
45.6 - 55.6
0.760 - 0.776
Pipe size
Further tightening angle
Recommended arm length of tool
φ
3/8"
60 to 90 degrees
Approx. 7 7/8
φ
1/2"
30 to 60 degrees
Approx. 9 13/16
φ
5/8"
30 to 60 degrees
Approx. 11 13/16
φ
3/4"
20 to 35 degrees
Approx. 17 3/4
R=0.016-0.031
45 ±2
90 ±2
A
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...