28
Plug
sYS
Terminals
Function
Explanation
212.3
DHW circulation pump
Supply values
■
Output: 50 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
212.4
3-way diverter valve for heating water
buffer cylinder bypass or heat pump
in the case of dual alternative mode
Supply values
■
Output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Plug
sYF
Terminals
Function
Explanation
214.1
M2
External hook-up, heating/cooling cir-
cuits:
Central heating demand, heating cir-
cuit M2/HC2
230 V~ digital input:
■
230 V~: Central heating demand for heating circuit
M2/HC2 active
■
0 V: No demand
■
Breaking capacity 230 V, 0.15 A
214.2
M2
External hook-up, heating/cooling cir-
cuits:
Central cooling demand, heating cir-
cuit M2/HC2
230 V~ digital input:
■
230 V~: Central cooling demand for heating circuit
M2/HC2 active
■
0 V: No demand
■
Breaking capacity 230 V, 0.15 A
214.3
M3
External hook-up, heating/cooling cir-
cuits:
Central heating demand, heating cir-
cuit M3/HC3
230 V~ digital input:
■
230 V~: Central heating demand for heating circuit
M3/HC3 active
■
0 V: No demand
■
Breaking capacity 230 V, 0.15 A
214.4
M3
External hook-up, heating/cooling cir-
cuits:
Central cooling demand, heating cir-
cuit M3/HC3
230 V~ digital input:
■
230 V~: Central cooling demand for heating circuit
M3/HC3 active
■
0 V: No demand
■
Breaking capacity 230 V, 0.15 A
Installation sequence
Electrical connection
(cont.)
6153640
Installation
