59
9. Multiple outdoor units control
LED1
LED3
TBIN
4
3
2
1
CN108
LED4
4
3
2
1
TBOUT
S3
S2
S1
N
L
TB6
3 1
CNS2
(RED)
CNW12
(RED)
CN21
(YLW)
1
8
SW1
SW2
SW4
1
8
1
6
4
1
1
3
FTC (Slave)
Power
supply
~/N
230V
50Hz
Earth
leakage
breaker
*1
breaker
*1
breaker
*1
breaker
Wiring
circuit
breaker
or
Isolating
switch
L
N
S1
S2
S3
Outdoor unit
S1
S2
S3
TB6
N
L
N
Power
supply
~/N
230V
50Hz
Earth
leakage
Wiring
circuit
breaker
or
Isolating
switch
circuit
circuit
FTC (Slave)
Power
supply
3N~
400V
50Hz
Earth
leakage
Wiring
circuit
breaker
or
Isolating
switch
L3
L2
L1
N
S1
S2
S3
Outdoor unit
Power
supply
~/N
230V
50Hz
Earth
leakage
Wiring
circuit
breaker
or
Isolating
switch
circuit
circuit
S1
S2
S3
TB6
N
L
N
FTC (Slave)
*1
<1 phase>
<3 phase>
Hydrobox
• For wiring as a slave controller (hydrobox) , refer to "4.4 Electrical Connection" in Hydrobox installation manual.
Notes:
1. Do not connect the power cable to the booster heater because it doesn’t work in slave controller setting.
2. Do not connect the main remote controller cable.
<Before system set up>
Insert the included SD memory card into the FTC control board. (Refer to section 4.11.)
Option 2: FTC (Slave) powered by independent source
If FTC (Slave) and outdoor units have separate power supplies, the following re-
quirements MUST be carried out:
• Remove the short-circuited connector (CNS2) on FTC (Slave). (see <Fig. 9.3.5>)
• Turn the outdoor unit DIP switch SW8-3 to ON.
• Turn on the outdoor unit BEFORE the FTC (Slave).
*1 If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same power line.
<Fig. 9.3.5>
<Fig. 9.3.6>
FTC (Slave) power supply
~/N 230 V 50 Hz
FTC (Slave) input capacity
Main switch (Breaker)
*1
16 A
Wiring
Wiring No. × size (mm²)
FTC (Slave) power supply
2 × Min. 1.5
FTC (Slave) power supply earth
1 × Min. 1.5
FTC (Slave) - Outdoor unit
*2
2 × Min. 0.3
FTC (Slave) - Outdoor unit earth
—
Circuit rating
FTC (Slave) L - N
*3
230V AC
FTC (Slave) - Outdoor unit S1 - S2
*3
—
FTC (Slave) - Outdoor unit S2 - S3
*3
24V DC
*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.
*2. Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
*3. The values given in the table above are not always measured against the ground value.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2. FTC (Slave)/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
FTC (Slave) power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)
3. Install an earth longer than other cables.
Remove the short-circuited
connector (CNS2)
Summary of Contents for PAC-SIF051B-E
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