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External control
It is possible to control the changeover from "Heating Mode" to "Cooling Mode" via an "external control unit".
Function not compatible with :
- Dual circuit kit
- Room sensors A59, A75 et A78
HP confi guration
Tariff input confi guration
HP
Set "Type of use" to "EXT control" (See "Tariff input confi guration", page 59)
Connections
Connections on the heat pump controller :
X11
EX1
EX2
EX3
Signal "Mode"
0V = Heating
230V = Cooling
Operation
Signal on EX1 Operation
0V H1 - M = 1 Heating works Cooling does not work
0V H3 - M = 0 Heating does not work Cooling does not work
230V H1 - M = 1 Cooling works Heating does not work
230V H3 - M = 0 Cooling does not work Heating does not work
• If 0V on EX1 Heating mode
• If 230V on EX1 Cooling mode
• A heating thermostat or a heating contact can be connected at H1 - M
• A cooling thermostat or a cooling contact can be connected at H3 - M
• The thermostats (or contacts) control the operation of the heat pump in the selected Mode.
12345
X86
6
Th° Heating
Common
Th° Cooling
H1
M
H3
Parameter setting
Alfea Extensa A.I. R32 / INSTALLATION / 2114 - EN
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