Electrical Wiring; General Precautions On Wiring; Recommended Wire Length And Wire Diameter For Power Supply System - Sanyo C4272R S/C Installation Instructions Manual

07-115 SSHP_II 5/7/07 4:00 PM

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
accordance 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.

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

You must follow LOCAL ELECTRICAL CODES for wiring.
Outdoor Unit
Model Name (A) Power Supply
CH2672R
Max. length 64 ft.
CH3072R
Max. length 92 ft.
CH3672R
Max. length 92 ft.
CH4272R
Max. length 81 ft.
Model Name (A) Power Supply
C2672R
Max. length 76 ft.
C3072R
Max. length 99 ft.
C3672R
Max. length 99 ft.
C4272R
Max. length 81 ft.
Page 57
Trade Size
of Conduit
type circuit breaker)
AWG #12
3/4 in.
AWG #10
3/4 in.
AWG #10
3/4 in.
AWG #10
3/4 in.
Trade Size
of Conduit
type circuit breaker)
AWG #12
3/4 in.
AWG #10
3/4 in.
AWG #10
3/4 in.
AWG #10
3/4 in.
(7) Regulations on wire diameters differ from locality
to locality. For field wiring rules, must follow your
LOCAL ELECTRICAL CODES before beginning.
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:
G
The remote control wiring and the inter-unit
control wiring should be wired apart from the
inter-unit power wiring.
G
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.
(10) All wiring used must be Class 1.
MOP
Power Supply Terminal Base
(Fuse or HACR
Capacity Max. Wire Diameter
30 A 50 A
35 A (230/208 V) 50 A
35 A (230/208 V) 50 A
40 A 50 A
MOP
Power Supply Terminal Base
(Fuse or HACR
Capacity Max. Wire Diameter
25 A 50 A
30 A (230/208 V) 50 A
30 A (230/208 V) 50 A
35 A 50 A
57
* AWG = American Wire Gauge
Trade Size
of Conduit
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.
Trade Size
of Conduit
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.
AWG #6 1-1/4 in.