Viessmann VITOTRONIC 200 Service Instructions Manual page 283

Main and expansion PCB
Plug sYH
Terminals Function
216.1
Central heating demand, heating cir-
A1
cuit A1/HC1
or
Smart Grid, floating contact 1
216.2 Central cooling demand, heating cir-
cuit A1/HC1
A1
216.4 Smart Grid, floating contact 2
(cont.)
Explanation
230 V~ digital input:
■
■
■
230 V~ digital input:
■
■
■
Function dependent on terminal 216.4: See "Smart
Grid" chapter in the "Function description".
230 V~ digital input:
■
■
■
230 V~ digital input:
■
■
■
Function dependent on terminal 216.1: See "Smart
Grid" chapter in the "Function description".
PCBs and connection options
230 V~: Central heating demand for heating circuit
A1/HC1 active
0 V: No demand
Breaking capacity 230 V, 2 mA
230 V~: Contact active
0 V: Contact not active
Breaking capacity 230 V, 2 mA
230 V~: Central cooling demand for heating circuit
A1/HC1 active
0 V: No demand
Breaking capacity 230 V, 0.15 A
230 V~: Contact active
0 V: Contact not active
Breaking capacity 230 V, 2 mA
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