Viessmann VITOCAL 111-S - Page 44

44
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~: Room 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~: Room 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~: Room cooling demand for heating circuit
M3/HC3 active
■
0 V: No demand
■
Breaking capacity 230 V~, 0.15 A
Plug
sYH
Terminals Function Explanation
216.1
A1
Central heating demand, heating cir-
cuit A1/HC1
Or
230 V~ digital input:
■
230 V~: Room heating demand for heating circuit
A1/HC1 active
■
0 V: No demand
■
Breaking capacity 230 V~, 2 mA
216.2
A1
Room cooling demand, heating circuit
A1/HC1
230 V~ digital input:
■
230 V~: Room cooling demand for heating circuit
A1/HC1 active
■
0 V: No demand
■
Breaking capacity 230 V~, 0.15 A
Indoor unit: Expansion PCB on main PCB (230 V~ components)
Information regarding the connection values
■
The specified output is the recommended connected
load.
■
Total output of all components connected directly to
the heat pump control unit (e.g. pumps, valves, mes-
sage facilities, contactors): Max. 1000 W
If the total output is < 1000 W, the individual rating of
a component (e.g. pump, valve, message facility,
contactor) can be greater than specified. However,
the breaking capacity of the relevant relay must not
be exceeded.
■
The specified current indicates the max. switching
current of the switching contact. Observe total cur-
rent of 5 A.
Set the required parameters during commissioning:
See page 70 onwards.
Installation sequence
Electrical connection (cont.)
6199592
Installation