Technical data
1. Specifications
1
12
3
4
5
I - 104
■ 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 due to 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.
1-11 Installation Instructions
Electrical Wiring
■ Recommended Wire Length and Wire Diameter for Power Supply System
* AWG = American Wire Gauge
(1) Single Type (One indoor unit / one outdoor unit)
(A) Power Supply (B) Inter-unit wiring
Power Supply Terminal Base
Capacity Max. Wire
4 mm
2
2.5 mm
2
Diameter
AER 425 S(C/H)L3E 97 m 50 m 15 A 25 A 5.5 mm
2
(AWG#10)
AER 436 S(C/H)L3E 60 m 50 m 20 A 25 A 5.5 mm
2
(AWG#10)
AER 448 S(C/H)L3E 54 m 50 m 25 A 25 A 5.5 mm
2
(AWG#10)
AER 425 S(C/H)LE 17 m 50 m 40 A 50 A 14 mm
2
(AWG#10)
Time Delay
Fuse or
Circuit
Capacity
R407C
models
Type
(7) Regulations on wire diameters differ from locality to
locality. For field wiring rules, please refer to your
LOCAL ELECTRICAL CODES before beginning.
You must insure 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 shielded on both
sides.
(9) If the power supply cord of this appliance is dam-
aged, it must be replaced by a repair shop ap-
pointed by the manufacture, because special
purpose tools are required.