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Si39-406
Installation
General Information
53
3.2.10
Electrical Work
Control Wiring
1. Compatible types of wire
Wiring Specifications
Note:
1. Sheathed wire may be used for transmission wirings, but they do not comply with EMI
(Electromagnetic lnterference) (EN55014). When using sheathed wire. EMI must conform to
Japanese standards stipulated in the Electric Appliance Regulatory Act. (If using a sheathed
wire, the grounding shown in the figure on the left is unnecessary.)
2. Problems arising from the use of unsuitable cable
a)
When cable less than 0.75 mm² is used
Where the control wiring is particularly long the transmission signals may, for example, become
unstable and the terminal relay cease to function. (Reduced voltage) The control system may
become unduly subject to noise interference.
b)
When cable more than 1.25 mm² is used
When wiring indoor units together, the terminal block will not be able to accommodate 2 cables
simultaneously if the cables are larger than 1.25 mm².
c) For multi-core cable
The greater play between wires, the more the transmitted wave is distorted and transmission
destabilized.
d) In the case of a remote controller with a three way selector for cooling, heating and ventilation,
twin core cable should be used when the ventilation mode is not required and three core cable
should be used when three way selection is required.
e) Since there is a considerable risk of mixing high (220 to 240V) and low voltage in the case of, for
example, a PCB for remote control, multiple core cable must not be used.
(Internal wiring regulations and dielectric strengths of cables are relevant here.)
f) Other important points
1. The refrigerant circuit and the indoor/outdoor connecting cables must correspond exactly.
2. A suitable gap must be left between the control cables and the power supply cables where
these are laid alongside each other. (See "Separation of control and power supply cables" on
page 55)
Wiring Type
Sheathed Wire (2 wire)
Size
AWG18-16 (0.75~1.25 mm²)
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...