Viessmann Vitocal 222-A, Инструкция по установке и обслуживанию

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38
Terminals Function Explanation
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
Plug
sYH
Terminals Function Explanation
216.1
A1
Central heating demand, heating cir-
cuit A1/HC1
or
230 V~ digital input:
■
230 V~: Central heating demand for heating circuit
A1/HC1 active
■
0 V: No demand
■
Breaking capacity 230 V, 2 mA
Smart Grid, floating contact 1 230 V~ digital input:
■
230 V~: Contact active
■
0 V: Contact not active
■
Breaking capacity 230 V, 2 mA
216.2
A1
Central cooling demand, heating cir-
cuit A1/HC1 230 V~ digital input:
■
230 V~: Central cooling demand for heating circuit
A1/HC1 active
■
0 V: No demand
■
Breaking capacity 230 V, 0.15 A
216.4 Smart Grid, floating contact 2 230 V~ digital input:
■
230 V~: Contact active
■
0 V: Contact not active
■
Breaking capacity 230 V, 2 mA
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 68 onwards.
Installation sequence
Electrical connection
(cont.)
5831412
Installation