Drainage Piping Work; Electrical Work - Mitsubishi Electric P25 Installationshandbuch

5. Drainage piping work

Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain pan (optional parts).

6. Electrical work

For PU(H)-P·YGAA
F
B
S1 S2 S3
D
D
B
E G
For PU(H)-P·VGAA
B
L N S1 S2 S3
D
D
B
E
Fig. 6-1
Fig. 6-2
A
S1
S2
S3
C
F F
A A
G
C
A
S1
S2
S3
C
A A
C
6.1. Precautions (Fig. 6-1)
• 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, F.
• 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 mm contact separation in each pole shall be provided by the
air conditioner installation.
∗ Label each breaker according to purpose (heater, unit etc.).
A Indoor unit
F
B Outdoor unit
C Remote controller
D Main switch/fuse
E Grounding
A
F Main switch/fuse for Electric heater
G
G Grounding for Electric heater
A
6.2. Outdoor unit wiring (Fig. 6-2)
1. Remove the service panel.
2. Wire the cables referring to the figure.
A Earth terminal
B Terminal block (Left: Power supply, Right: Indoor/Outdoor unit connecting wire)
C Fasten with wiring clamp
D Extraction direction for service panel
E Service panel
7