Electrical Work - Mitsubishi Electric Mr. Slim SUZ-KA25 Installationshandbuch

6. Electrical work

6.1. Outdoor unit (Fig. 6-1, Fig. 6-2, Fig. 6-3, Fig. 6-4)
Remove the service panel.
1
Wire the cables referring to the Fig. 6-1, Fig. 6-2, Fig. 6-3 and the Fig. 6-4.
2
SUZ-KA25/35/50VA4
B
S1 S2 S3 L~ N~
D
C
For Power supply
Fig. 6-1
Indoor terminal block
B
Earth wire (green/yellow)
Indoor/outdoor unit connecting
A
wire 3-core 1.5 mm² or more
D
L N
C C
Outdoor terminal block
E
Power supply cord SUZ-KA25/KA35: 1.5 mm² or more
SUZ-KA50/KA60/KA71: 2.5 mm² or more
Fig. 6-2
SUZ-KA25/35/50VA4
Be sure to fix the
indoor/outdoor unit
connecting wire us-
ing this cord clamp.
Fig. 6-3
SUZ-KA60/71VA4
Be sure to fix the
indoor/outdoor unit
connecting wire us-
ing this cord clamp.
6
A
S1
S2
S3
1 2
Indoor unit
A
Outdoor unit
B
Wired main switch (Earth leakage breaker)
C
Earth
D
For SUZ-KA25/KA35/KA50VA4
L~ N~
C
E
Service panel
Remove fixing
screw to open the
service panel.
A
B
Loosen terminal screw
A
Terminal block
B
Lead wire
C
Service panel
Remove fixing
screw to open the
service panel.
Fig. 6-4
SUZ-KA60/71VA4
B
L N 1 S 2 S
D
C
For Power supply
• Perform wiring as shown in the diagram to the lower left. (Procure the cable locally)
(Fig. 6-2)
Make sure to use cables of the correct polarity only.
Connecting cable
A
Indoor terminal block
B
Outdoor terminal block
C
Always install an earth wire longer than other cables.
D
Power supply cord
E
Caution:
• Use care not to make miswiring.
• Firmly tighten the terminal screws to prevent then from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
• Connect cable from the indoor unit correctly on the terminal-block.
• Use the same terminal block and polarity as is used with the indoor unit.
• For aftercare maintenance, give extra length to connecting cable.
• Both end of connecting cable (extension wire) are peeled off. When too
long, or connected by cutting off the middle, peel off power supply cable to
the size given in the figure.
• Be careful not to contact connecting cable with piping.
Caution:
• Use care not to make miswiring. (Fig. 6-4)
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
C Warning:
• Be sure to attach the service panel of the outdoor unit securely. If it is not
attached correctly, it could result in a fire or an electric shock due to dust,
water, etc.
• Tighten terminal screws securely.
• Wiring should be done so that the power lines are not subject to tension.
Otherwise, heat may be generated or fire may occur.
A
S1
S2
S3
1 2
S3
Indoor unit
A
Outdoor unit
B
Wired main switch (Earth leakage breaker)
C
Earth
D