6
7. Electrical work
7.1. Precautions (Fig. 7-1)
Electrical specification
Input capacity Main Switch/Fuse (A)
Power supply
SEZ-KA35
SEZ-KA50
SEZ-KA60
SEZ-KA71
(1 phase ~/N, 230V,
50Hz)
10
20
20
20
• The compressor will not operate unless the power supply phase connection is cor-
rect.
• Grounding protection with a no-fuse breaker (earth leakage breaker [ELB]) is usu-
ally installed for
D
.
• The connection wiring between the outdoor and indoor units can be extended up to
a maximum of 50 meters, and the total extension including the crossover wiring
between rooms is a maximum of 80 m.
A switch with at least 3.5 mm contact separation in each pole shall be provided by the
air conditioner installation.
* Label each breaker according to purpose (heater, unit etc.).
Fig. 7-1
A
Indoor unit
B
Outdoor unit
C
Wired remote controller
D
Main switch/fuse
E
Grounding
For Power supply
For Power
supply
A
C
B
D
S3
S3
S2
S1
S2
S1
2
1
D
E
C
B
A
A
A
(1) SEZ-KA35, KA50, KA60, KA71VA
6. Drainage piping work
Fig. 6-1
6.1. Drainage pipe connection (Fig. 6-1)
Indoor unit’s drainage pipe
• The drainage pipe should be arranged so that the discharge end is lower than the
other end, as shown in the figure opposite.
• Place the trap outside the unit.
• After connecting the drainage pipe, make sure that water is discharged properly
and that there are no leaks.
A
Drainage piping connection 1 RP male.
B
Trap
Outdoor unit drainage pipe connection
When drainage piping is necessary, use the drain pan (supplied as an option).
A
B
H
1
H
2
H
1
: 50 mm or more
H
2
: 1/2 H
1
or more
