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6. Electrical work
A
H I
G
J
K
Fig. 6-1
6.1.1. Indoor unit power supplied from outdoor unit (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Indoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. Max. 50 m, 165 ft
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft <Only for PKA-A·GA>
*3. The figures 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.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Use copper supply wires.
3. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.
4. Install an earth longer than other cables.
6.1. Indoor unit (Fig. 6-1)
1. Remove the corner box.
F
2. Install each wire into the unit.
3. Open the front grill, remove 1 tapping screw and remove the terminal block cover.
B
A Terminal block cover
4. Connect each wire properly to the terminal block.
• In consideration of future servicing, please leave some leeway for the wiring length.
5. Put all the parts back the way they were.
6. Use a clamp from the bottom of the electric parts box to fasten each wire.
C
s Fix power source wiring to control box using buffer bushing for tensile force.
(PG connection or the like.)
D
A means for the disconnection of the supply with an isolation switch, or similar de-
vice, in all active conductors shall be incorporated in the fixed wiring.
B Terminal block for Indoor/outdoor connecting
E
C Terminal block for power supply (separate indoor/outdoor unit power supplies, K-control ap-
G
D Earth point
E Clamp
F Terminal block for remote controller (Only for PKA-A·GA)
G Conduit plate
H Bush (Purchased locally)
I Lock nut (Purchased locally)
J Connector (Purchased locally)
K Conduit (Purchased locally)
1:1 System
C
L1
A
B
L2
D
GR
S1
S2
S3
E
G
Simultaneous twin system
C
L1
A
B
L2
GR
D
S1
S2
S3
E
G
PKA
–
1A
15A
–
–
3 × AWG16 (polar)
*1
1 × Min. AWG16
2 × AWG22 (Non-polar)
*2
*3
–
*3
AC 208/230 V
*3
DC24 V
*3
DC12 V
plication)
F
S1
S2
S3
1
2
F
F
S1
S1
S2
S2
S3
S3
1
1
G
2
2
A Outdoor unit power supply
B Wiring circuit breaker or isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
E Remote controller (Only for PKA-A·GA)
F Indoor unit
G Indoor unit earth
A Outdoor unit power supply
B Wiring circuit breaker or isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
E Remote controller (Only for PKA-A·GA)
F Indoor unit
G Indoor unit earth
7
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