Installation
Si39-406
54
General Information
Power Supply
(Cabling of Main
Power Supply)
1. Choosing a circuit breaker
The power supply work must conform to local regulations. In Japan, the relevant regulations are the
MITI ordinance determining technical standards for electrical equipment, and the Internal Wining
Provisions.
a) The indoor unit circuit breakers
In accordance with the provisions for internal wiring (JEAC8001-1986), power may be supplied
by means of crossover lines between the indoor units in a single system branch circuit.
When using high static pressure indoor units the fan motors must have a large capacity. Single
phase 220~240V branch circuits are therefore required for each indoor unit.
Example: Up to 10 × 2.5HP indoor units or 5 × 5HP indoor units can be wired together.
b) The outdoor unit circuit breaker
A separate circuit breaker must be fitted for each unit.
The motors incorporated into air conditioning system compressors are treated as special motors
under the internal wiring provisions. The values which apply to normal motors are thus
somewhat variance with those which apply to such compressor motors. You are recommended
to adhere strictly to the procedures laid down in the technical materials included in, for example,
the system design manuals.
Calculation of load (Refer to local regulation.)
With respect to the calculation of load for motors with special applications such as elevator, air
conditioner and refrigerator motors, not only must the rated current be shown on the name plate of
the said motor or piece of apparatus but it must also included all special characteristics or
applications.
Note:
The rated current for package air conditioners which use special purpose built-in compressor
motors in their compressors in 1.2 times the operating current shown on the name plate.
Branch circuit facility (Internal wiring provisions
305-2)
The motors must be set up with a dedicated branch
circuit for each unit. However, where they
correspond to any of the following situations, this
limitation does not apply.
When used in a 15A branch circuit of a 20A
circuit breaker branch circuit
Note: It is recommended that the total rated
capacity of the motors set up in a 15A branch circuit
or a 20A circuit breaker branch circuit should be no
more than 2.2kW.
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Страница 1: ...Design Installation Testing Instruction R410A Heat Recovery 60Hz REYQ96MTJU Si39 406...
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Страница 114: ...Appendix Si39 406 108 General Information 3P135887 1...
Страница 124: ...Appendix Si39 406 118 General Information 7 8 Piping System Diagrams 7 8 1 Outdoor Unit REYQ96MTJU 4D045329...
Страница 126: ...Appendix Si39 406 120 General Information 7 8 3 BS Unit BSVQ36MVJ BSVQ60MVJ 4D045338...
Страница 127: ...Si39 406 Appendix General Information 121 7 9 Wiring Diagrams 7 9 1 Outdoor Unit REYQ96MTJU 3D044892A...
Страница 128: ...Appendix Si39 406 122 General Information 7 9 2 Field Wiring REYQ96MTJU 3D042647A...
Страница 156: ...Refrigerant Piping Si39 406 150 Installation Manual REYQ96MTJU...
Страница 158: ...Refrigerant Piping Si39 406 152 Installation Manual REYQ96MTJU...
Страница 230: ...Precautions for New Refrigerant R410A Si39 406 224 Precautions for New Refrigerant R410...
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