Power Supply - Mitsubishi Electric PUHZ-W50VHA Technical Manual

3. Power Supply

Interface controller is applicable to both methods of interface unit power supplied from outdoor unit, and of separate interface
unit/outdoor unit power supplies. Choose one according to the site.
(Photo. 3-1)
A Inlet for control cable
B Inlet for power
C Clamp
D Interface / Outdoor unit connecting terminals
E Earth terminal
3.1. Interface unit power supplied from outdoor unit (Photo 3-2)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
D
L
A B C
N
S1
S2
S3
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit
Interface unit model
Interface unit-Outdoor unit
Interface unit-Outdoor unit earth
Interface unit-Outdoor unit S1-S2
Interface unit-Outdoor unit S2-S3
*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 code.
2. Power supply cables and interface unit/outdoor unit connecting cables shall not be lighter than polychloro-
prene sheathed fl exible cable. (Design 60245 IEC 57)
3. Install an earth longer than other cables.
F
S1
S2
S3
E
*1
*1
*2
*2
A
Photo.3-2
PAC-IF011B-E
3× 1.5 (polar)
1 × Min.1.5
AC 230 V
DC24 V
28
C C
Photo.3-1
B
E
D