Viessmann Vitocal 200-G Series Installation And Service Instructions Manual page 31

Electrical connection
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.
Plug
sXS
Terminals Function
222.1 Control of mixer motor for external
heat generator
Signal mixer CLOSE
222.2 Control of mixer motor for external
heat generator
Signal mixer OPEN
222.3 Control of external heat generators
222.4 and 1 high limit safety cut-out each
(on site, max. 70 °C), to switch off or
switch between the following compo-
nents:
Central heating:
Secondary pump, heat pump
■
External heat generator
■
DHW reheating:
3-way diverter valve "Central heat-
■
ing/DHW heating"
(cont.)
Set the required parameters during commissioning:
See page 55 onwards.
Explanation
Connection values:
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 0.2(0.1) A
■
Connection values:
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 0.2(0.1) A
■
Floating contact
Note
The switching contact is a floating N/O contact that is
■
closed when a heat demand is issued.
Never route low voltage via this contact. For that, a
■
relay must be fitted on site.
The boiler water temperature sensor in the external
■
heat generator (plug F20) must capture the average
temperature of the external heat generator.
Connection values (contact load):
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Connect the high limit safety cut-out:
Central heating
In series to the secondary pump (connection 211.2)
■
In series for controlling external heat generators
■
DHW reheating
In series to the 3-way diverter valve "central
■
heating/DHW heating" (connection 211.4)
Installation sequence
31