Mitsubishi Electric PAC-IF021B-E Manual page 10

3
Electrical work (FTC)
3.1.2 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).
A B C
Photo. 3-3
FTC unit model
FTC unit power supply
FTC unit input capacity
Main switch (Breaker)
FTC unit power supply & earth
FTC unit-Outdoor unit
FTC unit-Outdoor unit earth
FTC unit L-N
FTC unit-Outdoor unit S1-S2
FTC 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 FTC unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed fl ex-
ible cable. (Design 60245 IEC 57)
3. Install an earth wire longer than other cables.
C-10 C-10
D
F
L L
G B C
N
N
S1
S1
S2 S2
S3 S3
E
CNS2
PAC-IF021B-E
~/N (Single Phase), 50 Hz, 230 V
*1
3 × Min. 1.5
*2 2 × Min. 0.3
*3 AC 230 V
*3
*3 DC24 V
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.
FTC unit controller connector (CNS2)
connection change
Outdoor unit DIP switch settings (when
using separate FTC unit/outdoor unit
power supplies only)
TB6
Power Supply Cables
16 A
–
–
Flow temp. controller
Separate power supply specifi cations
Disconnected
ON
OFF 1 2
Set the SW8-3 to ON.
S1 S2 S3
L N
E: FTC unit/outdoor unit
connecting cable
3
(SW8)