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Photo.2-1
A
B
C
E
C
D
N
L
S2
S3
S1
E: FTC unit/outdoor unit
connecting cables
Earth cable
TB6
2. Electrical work
2.1. FTC (Photo. 2-1)
1. Remove the cover.
2. Wire the power cable and control cable separately through the
respective wiring inlets given in the photo.
• Make sure to put screws tightly.
A
Inlet for control cable
B
Inlet for power
C
Clamp
D
FTC / Outdoor unit connecting terminals
E
Earth terminal
2.1.1. FTC unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit must be powered properly. (Details are shown in its installation manual.)
S1
S2
L
N
S1
S2
S3
S3
A
B
C
D
E
F
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E FTC unit/outdoor unit connecting cables
F FTC unit
*1. Max. 80 m
*2. 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 insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2. Power supply cables and FTC unit/outdoor unit connecting cables shall not be lighter than polychloroprene
sheathed
fl
exible cable. (Design 60245 IEC 57)
3. Install an earth wire longer than other cables.
Photo. 2-2
FTC unit model
PAC-IF021B-E
Wiring Wire No. × size (mm²)
FTC unit-Outdoor unit
3× 1.5 (polar)
FTC unit-Outdoor unit earth
1 × Min. 1.5
Circuit rating
FTC unit-Outdoor unit S1-S2
AC 230 V
FTC unit-Outdoor unit S2-S3
DC24 V
Содержание PAC-IF012B
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