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5.1.21. PV contact 1
This sensor input could be used as a PV-contact to signal overflow from a Photovoltaic System.
If the PV-Contact set in this menu is closed, the heating circuit is set to Daytime mode.
For info on the operation and wiring of the PV contact please consult the
technical manual of your PV system.
5.1.22. PV contact 2
This adds information on the condition of Smart grid from the electricity provider. When
combined with the PV contact 1, the effect on the heating circuit is following:
PV1 open, PV2 open
= heating circuit off
PV1 closed, PV2 open
= heating circuit in Night mode
PV1 closed, PV2 closed
= heating circuit in Day mode
PV1 open, PV2 closed
= heating circuit in automatic mode following time program
5.1.23. Quick Heat from Boiler to Heating System
Special function for fast heat up of a heating system when heating the entire thermal store is
prevented (only its upper section is heated), so that the heat from the boiler is used primarily for
space heating. The activated function closes the mixing valve (optionally also stops the circulation
pump 5.1.24) in the heating system until the desired heating water temperature is reached at the
thermal store upper sensor (optionally also a fixed temperature 5.1.25 as an option).
5.2. Settings heating circuit 2 (not available)
5.3. Settings Domestic Hot Water (DHW)
By no means does the controller replace any safety elements!
5.3.1. Operating mode
Auto = automatic DHW heating mode using the preset time program and temperatures
Off = DHW heating is off
5.3.2. Hot water minimum
Min. DHW temperature outside the preset periods (see 3.5). If the temperature at the DHW
sensor drops below this value, heat request for DHW is activated.
The request only works if a heat source is activated in the respective menu, it
is not blocked and if this source is set for the DHW request.
5.3.3. DHW reference
The request only works if a heat source is activated in the respective menu, it is not blocked
and if this source is set for the DHW request
The request only works if a heat source is activated in the respective menu, it
is not blocked and if this source is set for the DHW request.
5.3.4. DHW comfort
The desired (min.) DHW temperature in the preset DHW Comfort periods (see 3.6). If the
temperature at the DHW sensor drops below this value, heat request for DHW is activated.
The request only works if a heat source is activated in the respective menu, it
is not blocked and if this source is set for the DHW request.
5.3.5. DHW hysteresis
The temperature hysteresis (difference) for DHW heating to be switched off. If the DHW
temperature exceeds the currently desired temperature (one of the temperatures set in 5.3.2.
to 5.3.4. following time programs set in 3.5. and 3.6.) + hysteresis set here, the heat request
for DHW is deactivated.
