Summer Mode - Resol DeltaTherm HC mini Handbuch Für Den Fachhandwerker

The parameter Mode is used for selecting between the following correction
modes:
Day / night: A reduced set flow temperature (night correction) is used during
night operation.
Day / off: The heating circuit and the optionally activated backup heating are
switched off during night operation.
Room / off: The heating circuit and the backup heating are switched off during
night operation. If the temperature falls below the adjusted limit temperature at
the allocated room sensor, the controller changes to the reduced heating mode.
Outdoor / off: The heating circuit and the backup heating are switched off during
night operation. If the temperature falls below the adjusted limit temperature at
the allocated outdoor temperature sensor, the controller changes to the reduced
heating mode.
The Timer HC parameter can be used for adjusting the time frames for day
operation.

Summer mode

The automatic summer mode becomes active when the outdoor temperature
exceeds the adjusted summer temperature TSummer. This can be limited to a
daytime frame with the parameters Daytime on and Daytime off. Outside the
adjusted time frame, the lower temperature TNight is used in summer mode. In
summer mode, the heating circuit is switched off.
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Backup heating
For heating circuit backup heating, the calculated set flow temperature is com-
pared with the temperature at one or two store / buffer reference sensors (differ-
ential control). If this temperature difference (DTOn) is too small, backup heating
will be activated. It will be switched off, if the difference (DTOff) between the store
and the set flow temperature is large enough.
If Therm. is selected, the set flow temperature is compared with a store reference
sensor. If Zone is selected, the set flow temperature is compared with 2 reference
sensors. The switching conditions have to be fulfilled at both reference sensors.
In the Set temperature mode, backup heating will heat to the set flow temper-
ature without a reference sensor. The value DTFlow will be automatically added
to the boiler set temperature in order to compensate for e. g. the heat loss in the
pipes. This can be used with modulating boilers which provide direct backup heating
without a store.
If a shared relay is used which has been previously adjusted and allocated, the boil-
er protection will become active, provided it has previously been adjusted.