Mitsubishi Electric PAC-IF032B-E Installation And Operation Manual page 15

4. Electrical work
CNW12
LED2
(RED)
1 4
1
2
3
CN21
4
5 1 3 (YLW)
6
7
8
9
2
10
1 2
1
11
CNW5
SW6
12
(WHT)
13
14
TB143
1 5
CN105
8
CN100
(RED)
(WHT)
FT C 2B
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
TB142 TB141
<Fig. 4.4.1>
Emergency
Legionella prevention
Flow switch →
Cooling
Heating →
HeatingECO →
DHW →
Holiday →
Thermostat
4-20mA/1-5V/0-10V
Remote controller
4-20mA / 1-5V / 0-10V setting
Flow temp.
No.2 Temp.
No.1 Temp.
Stop
4-20mA
0mA -- 4mA --------------- 20mA
1-5V 0V -------1V------------------- 5V
0-10V 0V ------------------10V
Refer to the section 10 for details about No1, 2 Temp.
LED3 LED5
LED4 LED1
10
SW1
1
10 10
SW3 SW2
1 1
1
S1 S2 S3
1 3
L N
CNS2
TB6
(RED)
TB142
1
→
2
3
→
4
5
6
7
→
8
9
10
11
12
13
14
TB143
1
(
THW1
2
3
(
THW2
4
5
(
TH2
6
7
(
THW5
8
( 9
10
( 11 +
12 –
(
13
14
Analog
signal
4.4. Connecting external inputs/outputs
FTC2B can be operated by following external input.
When the wires are wired to adjacent terminals use ring terminals and insu-
late the wires.
4.4.1. External inputs (Contact signal)
Name Terminal block Item
Emergency
IN1 TB142 1-2
operation input
Legionella
IN2 TB142 3-4 prevention mode
input *1
IN3 TB142 5-6 Flow switch input
IN4 TB142 7-8 Cooling mode input OFF
IN5 TB142 10-11 Heating mode input OFF
Heating ECO mode
IN6 TB142 10-12
input *2
IN7 TB142 10-13 DHW mode input *3 OFF
IN8 TB142 10-14 Holiday mode input OFF
Room thermostat
Ana.IN1 TB143 9-10
input
*1 Input signal: Pulse
Pulse specifications: ON (short)
OFF (open)
*2 Heating ECO mode sets the set temperature depending on the outdoor tem-
perature.
*3 When SW1-1 and SW1-2 are OFF, the mode is switched into auto DHW mode.
Input signal: Pulse
Pulse specifications: ON (short)
OFF (open)
When SW1-1 or SW1-2, or both are ON, the mode is switched into DHW mode.
4.4.2. External inputs ( Analog signal ) 4-20mA / 1-5V / 0-10V
Connect the transmission cables to No.11 and 12 on the terminal block (TB143).
No.11 on the terminal block (TB143) : Plus side
No.12 on the terminal block (TB143) : Minus side (Reference side)
Wiring specification and field supply parts
Item Name Model and specifications
External inputs External inputs 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
OFF(Open) ON(Short)
Emergency
Srandard operation
operation
OFF Legionella
prevention mode
Refer to SW3-6 in <5.1. Dip switch
function>
Cooling mode
Heating mode
OFF Heating ECO mode
DHW mode
Holiday mode
Refer to SW3-4 in <5.1. Dip switch
function>
200ms or more
200ms or more
Solid wire: ø0.65 mm to ø1.2 mm
15