S1
S2
S3
S1
S2
S3
208/230V
Single phase
Isolator
3 poles isolator
A-Control
Outdoor Unit
A-Control
Indoor Unit
8
6. Electrical work
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power
line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power
is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
6.2. Field electrical wiring
Outdoor unit model
HA30, HA36
Outdoor unit power supply
Single, 208/230 V, 60 Hz
Breaker size
*4
30 A
Minimum circuit ampacity
28 A
Maximum rating of overcurrent protective device
40 A
Wiring
Wire No. ×
size
Outdoor unit power supply
2 × Min. AWG 10
Outdoor unit power supply earth
1 × Min. AWG 10
Indoor unit-Outdoor unit
*1
3 × AWG 16 (polar)
Indoor unit earth
*1
1 × Min. AWG 16
Remote controller-Indoor unit
*2
2 × AWG 22 (Non-polar)
Circuit
rating
Outdoor unit L1-L2
*3
AC 208/230 V
Indoor unit-Outdoor unit S1-S2
*3
AC 208/230 V
Indoor unit-Outdoor unit S2-S3
*3
DC 24 V
Remote controller-Indoor unit
*3
DC 12 V
*1. Max. 45 m, 147 ft
If 2.5 mm
2
used, Max. 50 m, 164 ft
If 2.5 mm
2
used and S3 separated, Max. 80 m, 262ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max 1500 ft
*3. The
fi
gures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulataed by the transformer or other device.
*4. Use earth leakage breaker (NV)
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4. Install an earth longer than other cables.
Warning:
• Turn on the main power when the ambient temperature is -20°C, -4°F or higher.
• In below -20°C, -4°F condition, it needs at least 4hr standby to operate in order to warm the electrical parts.
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RG79D356H04.indd 8
2009/03/23 10:31:17
2009/03/23 10:31:17