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Si39-406
Installation
General Information
55
2. Cable size
The thickness of the cables in the circuits (branch circuits) providing the main power supply to each
item of apparatus must satisfy the following conditions:
1. To have a current tolerance of 40% or more of the rated current of the overcurrent circuit
breaker (wiring circuit breaker, etc.).
2. To have a current tolerance of 125% or more of the rated current in cases where the rated
current of the apparatus is 50A or less.
3. To have a current tolerance of 110% or more of the rated current in cases where the rated
current of the apparatus is more than 50A.
4. To satisfy voltage drop standards.
3. Separation of control and power supply cables
If control and power cables are run alongside each other
then there is a strong likelihood of
operational faults developing due to interference in the signal wiring caused by electrostatic and
electromagnetic coupling.
The table below indicates our recommendations as to the appropriate spacing of control and
power cables
where these are to be run side by side.
Note:
1. The figures are based on an assumed length of parallel cabling up to 33’ (100m). For lengths in
excess of 33’ (100m) the figures will have to be recalculated in direct proportion to the additional
length of cable involved.
2. If the power supply waveform continues to exhibit some distortion the recommended spacing in
the table should be increased.
If the cables are laid inside conduits then the following points must also be taken into account when
grouping various cables together for introduction into the conduits.
1. Power cables (including power supply to the air conditioner) and signal cables must not be laid
inside the same conduit. (Power cables and signal cables must each have their own individual
conduits.)
2. In the same way, when grouping the cables, power and signal cables should not be bunched
together.
Important points
1. Earthing
Have the indoor and outdoor units both been earthed?
∗
If the apparatus is not properly earthed then there is always a risk of electric shocks. The
earthing of the apparatus must be carried out by a qualified person.
Current capacity of power cable
Spacing (d)
100V or more
10A or less
12" (300mm)
50A
20" (500mm)
100A
40" (1000mm)
100A or more
60" (1500mm)
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...