5
9.7 Connecting inputs/outputs
When the wires are wired to adjacent terminals use ring terminals and insulate the wires.
<Electrical connection for master controller>
• Refer to "4.5 Connecting inputs/outputs"
<Electrical connection for slave controller>
PAC-IF051B-E
. Multiple outdoor units control
Signal inputs
Name Terminal block Connector
Item
OFF (Open)
OFF (Short)
RC
TBI.2 13-14
—
Communication cable between indoor units
—
—
IN2
TBI.1 3-4
—
Flow switch 1 input
Refer to SW2-2 in <9.6 Dip Switch Functions>.
Wiring specification and field supply parts
Item
Name
Model and specifications
Signal input
function
Signal input
wire
Use sheathed vinyl coated cord or cable.
Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Solid wire: ø0.65 mm to ø1.2 mm
Switch
Non-voltage “a” contact signals
Remote switch: minimum applicable load 12V DC, 1mA
Thermistor inputs
Name
Terminal block Connector
Item
Optional part model
TH2
—
CN21
Thermistor (Ref. liquid temp.)
—
THW1
—
CNW12 1-2 Thermistor (Flow water temp.)
—
THW2
—
CNW12 3-4 Thermistor (Return water temp.)
—
Note:
Do not splice the wiring to extend or shorten it, or this could affect correct monitoring of each temperature.
If the wiring is too long, bundle it with a strap to adjust the length.
Outputs
Name
Terminal block Connector Item
OFF
ON
Signal/Max current
OUT1
TBO.1 3-4
—
Water circulation pump 1 output
OFF
ON
230V AC 1.0 A Max
OUT4
TBO.1 9-11
—
3-way valve (2-way valve 1) output
Heating
DHW
230V AC 0.1 A Max
OUT13 TBO.2 7-8
—
2-way valve 2 output
DHW
Heating
230V AC 0.1 A Max
TBO.1
12 13 14
9 10 11
6 7 8
3 4 5
1 2
12 13 14
9 10 11
6 7 8
3 4 5
1 2
TBO.2
OUT1
OUT4
N L
N
L
N L
OUT13
<Fig. ..2>
TBI.1
2 4 6 8 10 12 14
1 3 5 7 9 11 13
2 4 6 8 10 12 14
1 3 5 7 9 11 13
FTC 4
TBO.2
TBO.1
1
5
SW3
1
8
1
6
1
5
CN01
(BLK)
1
3
CN3C
(BLU)
1
3
CNBHT
(BLK)
1
3
CNIH
(ORN)
CN20
(RED)
CN21
(YLW)
1
3
CNW12
(RED)
CNW5
(WHT)
1
2
1
4
1
2
TBI.2
LED1
LED2
SW2
1
8
SW1
1
8
SW4
CN108
CNRF
(WHT)
LED4
LED3
1
5
CN105
(RED)
2
4
6
8
10
12
14
1
3
5
7
9
11
13
2
4
6
8
10
12
14
1
3
5
TBO.3
2
4
6
1
3
5
7
9
11
13
FTC4 (Master)
<Fig. ..1>
