Mitsubishi Electric PUHZ-W50VHA Technical Manual page 29

3.2. Separate interface unit/outdoor unit power supplies
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
A B C
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
G Interface unit power supply
If the interface and outdoor units have separate power supplies, refer to the table below.
Interface unit controller con-
nector (CNS2) connection
change
Outdoor unit DIP switch set-
tings (when using separate in-
terface unit/outdoor unit power
supplies only)
Interface unit model
Interface unit power supply
Interface unit input capacity
Main switch (Breaker)
Interface unit power supply & earth
Interface unit-Outdoor unit
Interface unit-Outdoor unit earth
Interface unit L-N
Interface unit-Outdoor unit S1-S2
Interface unit-Outdoor unit S2-S3
*1. A breaker with at least 3.0mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
*2. Max. 120 m
*3. The fi gures are NOT always against the ground.
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.
D
F
L
L
G B
C N
N
S1 S1
S2 S2
S3 S3
E
Separate power supply
specifi cations
Disconnected
ON 3
(SW8)
OFF 1 2
Set the SW8-3 to ON.
PAC-IF011B-E
~/N (Single Phase), 50 Hz, 230 V
*1 16 A
3 × Min. 1.5
*2 2 × Min. 0.3
–
*3 AC230V
*3 –
*3 DC24V
29
Photo. 3-3
CNS2