Viessmann VITOTRONIC 200 Service Instructions Manual page 282

PCBs and connection options
Main and expansion PCB
Terminals Function
212.3 DHW circulation pump
212.4 3-way diverter valve for heating water
buffer cylinder bypass or heat pump
in the case of dual alternative mode
Plug sYF
Terminals Function
214.1 Central heating demand, heating cir-
cuit M2/HC2
M2
214.2 Central cooling demand, heating cir-
cuit M2/HC2
M2
214.3 Central heating demand, heating cir-
cuit M3/HC3
M3
214.4 Central cooling demand, heating cir-
cuit M3/HC3
M3
282
(cont.)
Explanation
Connection values
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Connection values
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Explanation
230 V~ digital input:
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230 V~ digital input:
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230 V~ digital input:
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230 V~ digital input:
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Output: 50 W
Voltage: 230 V~
Max. switching current: 4(2) A
Output: 130 W
Voltage: 230 V~
Max. switching current: 4(2) A
230 V~: Central heating demand for heating circuit
M2/HC2 active
0 V: No demand
Breaking capacity 230 V, 0.15 A
230 V~: Central cooling demand for heating circuit
M2/HC2 active
0 V: No demand
Breaking capacity 230 V, 0.15 A
230 V~: Central heating demand for heating circuit
M3/HC3 active
0 V: No demand
Breaking capacity 230 V, 0.15 A
230 V~: Central cooling demand for heating circuit
M3/HC3 active
0 V: No demand
Breaking capacity 230 V, 0.15 A