Mitsubishi Electric PAC-IF051B-E Installation Manual page 65

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. Multiple outdoor units control
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
1
2
3
4
5
6
TBO.1
7
8
9
10
11
12
13
14
FT C 4
FTC4 (Master)
1
2
3
4
5
6
7
TBO.2
LED3
8
9
10
11
12
13
14
1
2
3
CNIH
TBO.3
4
5
LED2
 (ORN)
6
3
1
CNBHT
 (BLK)
3
1
CN21
CNW12
CNW5
CN20
(YLW)
(RED)
(WHT)
(RED)
1
1
1
1
2
2
3
4
2
4
6
8 10 12 14
2
4
6
8 10 12 14
1
3
5
7
9 11 13
1
3
5
7
9 11 13
TBI.1
TBI.2
<Fig. ..1>
Signal inputs
Name Terminal block Connector
RC
TBI.2 13-14
IN2
TBI.1 3-4
Wiring specification and field supply parts
Model and specifications
Item
Name
Signal input
Signal input
Use sheathed vinyl coated cord or cable.
function
wire
Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 mm² to 1.25 mm²
Switch
Non-voltage "a" contact signals
Remote switch: minimum applicable load 12V DC, 1mA
Thermistor inputs
Name
Terminal block Connector
TH2
CN21
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
OUT1
TBO.1 3-4
OUT4
TBO.1 9-11
OUT13 TBO.2 7-8
N L
N
1 2
3 4 5
6 7 8
9 10 11
TBO.1
OUT1
OUT4
CN01
5
(BLK)
1
CN3C
1
(BLU)
3
1
CN105
(RED)
5
1
CNRF
(WHT)
5
LED4
CN108
SW4
LED1
1
6
SW2
SW1
1
8
1
8
SW3
8
1
Item
Communication cable between indoor units
Flow switch 1 input
Solid wire: ø0.65 mm to ø1.2 mm
Item
Thermistor (Ref. liquid temp.)
Water circulation pump 1 output
3-way valve (2-way valve 1) output
2-way valve 2 output
L
12 13 14
TBO.2
1 2
<Fig. ..2>
OFF (Open)
OFF (Short)
Refer to SW2-2 in <9.6 Dip Switch Functions>.
Optional part model
OFF
ON
OFF
ON
Heating
DHW
DHW
Heating
N L
3 4 5
6 7 8
9 10 11
12 13 14
OUT13
Signal/Max current
230V AC 1.0 A Max
230V AC 0.1 A Max
230V AC 0.1 A Max
5

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