5 / 9© INTEREL 2021 - rev07
Electrical
Connections
Pin Signal Function
1 B Modbus Communications
2 A Modbus Communications
3 AO2 Heat, Heat 1, Cool
4 AO1 Cool, Cool 1, Fan
5 DIN3 Remote PIR
6 DIN2 Balcony/Window Contact
7 DIN1 Main Door Contact
8 DO1 Pilot Duty Contactor
9 GND Ground
10 V+ 12 Vdc
Pin Code Typical Function
1 C Neutral
2 G Ground
3 ER System Power
4 GH Fan High, Fan
5 GM Fan Medium, Heat 1, Rev Valve
6 FR Fan Power
7 GL Fan Low, Cool 2
8 VR Valve Power
9 W Heat, Heat 2, Rev Valve
10 Y Cool, Cool 1, Heat 1
Pin Code Typical Function
1 C Neutral
2 G Ground
3 ER System Power
4 GH Fan High, Fan
5 GM Fan Medium, Heat 1, Rev Valve
6 FR Fan Power
7 GL Fan Low, Cool 2
8 VR Valve Power
9 W Heat, Heat 2, Rev Valve
10 Y Cool, Cool 1, Heat 1
Low Voltage Signals
24 Vac power and HVAC signal 100–277 Vac power and HVAC signal
-1
B-
A-
A02-
A01-
DIN3-
DIN2-
DIN1-
DO1-
GND-
12V-
B-
A-
A02-
A01-
DIN3-
DIN2-
DIN1-
DO1-
GND-
12V-
-10
CN2
CN1
CN1
CN1
CN2 CN2
CN2
NOTE: Wiring schematics are generated together with the
quotation for each project. The quotation contains a link to
the correct wiring schematic.
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