Mitsubishi Electric PUHZ-W50, Installation Manual

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7
4. Electrical work
4.1.2. Separate FTC unit/outdoor unit power supplies
The following connection patterns are available.
The outdoor unit power must be powered properly(Details are shown in its installation manual).
S1
S2
L
N
L
N
S1
S2
S3
S3
A C B
D
G
E
B C
F
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E FTC unit/outdoor unit connecting cables
F FTC unit
G FTC unit power supply
If the FTC and outdoor units have separate power supplies, refer to the
table below.
Separate power supply specifi cations
FTC unit controller connector (CNS2)
connection change Disconnected
Outdoor unit DIP switch settings (when
using separate FTC unit/outdoor unit
power supplies only)
ON 3
OFF 1 2
(SW8)
Set the SW8-3 to ON.
FTC unit model PAC-IF021B-E
FTC unit power supply ~/N (Single Phase), 50 Hz, 230 V
FTC unit input capacity
Main switch (Breaker) *1 16 A
Wiring
Wire No. × size
(mm
2
)
FTC unit power supply & earth 3 × Min. 1.5
FTC unit-Outdoor unit *2 2 × Min. 0.3
FTC unit-Outdoor unit earth –
Circuit
rating
FTC unit L-N *3 AC 230 V
FTC unit-Outdoor unit S1-S2 *3 –
FTC unit-Outdoor unit S2-S3 *3 DC24 V
*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 FTC unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed fl exible ca-
ble. (Design 60245 IEC 57)
3. Install an earth wire longer than other cables.
Photo.4-3
CNS2
N L
S2 S3 S1
E: FTC unit/outdoor unit
connecting cable
Power Supply Cables
TB6