5. ELECTRICAL WIRING

5-1. General Precautions on Wiring

(1)Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2)Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.

(3)To prevent possible hazards from insulation failure, the unit must be grounded.

(4)Each wiring connection must be done in accor- dance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged.

(5)Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan.

(6)Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

(7)Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL ELECTRICAL CODES before begin- ning.

You must ensure that installation complies with all relevant rules and regulations.

(8)To prevent malfunction of the air conditioner caused by electrical noise, care must be taken when wiring as follows:

The remote control wiring and the inter-unit control wiring should be wired apart from the inter-unit power wiring.

Use shielded wires for inter-unit control wiring between units and ground the shield on both sides.

(9)If the power supply cord of this appliance is dam- aged, it must be replaced by a repair shop appointed by the manufacturer, because special purpose tools are required.

5-2. Recommended Wire Length and Wire Diameter for Power Supply System

Outdoor unit

Type

 

 

(A) Power supply wiring

 

Time delay fuse or

 

 

 

 

circuit capacity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHX03652

 

For field wiring rules, please refer

 

 

30 A

 

CHX06052

to your LOCAL ELECTRICAL CODES

 

 

50 A

 

 

 

 

 

 

 

 

Indoor unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

 

(B) Power supply wiring

 

Time delay fuse or

 

 

 

 

circuit capacity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K

 

For field wiring rules, please refer

 

 

15 A

 

 

 

 

 

 

 

 

A, X, T, U

 

 

 

15 A

 

to your LOCAL ELECTRICAL CODES

 

 

 

 

 

 

 

 

 

D

 

 

15 A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(C) Inter-unit (between outdoor and

(D) Remote control wiring

 

(E) Control wiring for group control

indoor units) control wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AWG #18 (0.75 mm2)

 

 

AWG #18 (0.75 mm2)

 

 

AWG #18 (0.75 mm2)

Use shielded wiring*

 

 

Use shielded wiring

 

 

 

Use shielded wiring

 

 

 

 

 

 

 

 

 

Max. 3,280 ft.

 

 

 

Max. 1,640 ft.

 

 

 

Max. 1,640 ft. (Total)

 

 

 

 

 

 

 

 

 

 

NOTE

* With ring-type wire terminal.

57

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Sanyo 85464359981002 Electrical Wiring, General Precautions on Wiring, CHX03652 For field wiring rules, please refer

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