Summer: The DHW is heated by an immersion heater if all connecting
heating circuits have switched to summer mode. As soon at least one
heating circuit is switched to heating mode, the DHW preparation is
taken over by the boiler again.
Important
The immersion heater is also used if a boiler malfunction occurs or
the boiler is switched off due to a boiler lock.
Always: DHW is heated exclusively by the immersion heater.
El immersion heater release (5061)
24h/day: Immersion heater permanently released
DHW release: Immersion heater released subject to DHW-release (see
prog. no. 1620).
Time program 4/DHW: Release of the immersion heater via the time
programme 4 of the local controller.
El immersion heater control (5062)
External thermostat: The controller continuously releases the domestic
water preparation with immersion heater within the release time,
regardless of the storage tank temperature. The current domestic water
setpoint in the controller has no effect. The required storage tank
temperature must be set at the external thermostats. The manual push
and the Legionella function do not work.
DHW sensor: The controller releases the domestic water preparation
with immersion heater within the release time, depending on the storage
tank temperature. The current domestic water setpoint in the controller is
complied with. If the sensor input B3 is designed as a thermostat, the
temperature will be regulated on the basis of the contact. The manual
push can be activated. If the Legionella function is active, charging will
be carried out until the Legionella setpoint is reached.
Important
To ensure that the setpoint control works correctly, the thermostat
outside of the controller must be set to the maximum storage tank
temperature.
Automatic push (5070)
The DHW-push can activated manually or automatically. It causes a one-
time DHW charging to the nominal setpoint.
Off: The DHW-push can only activated manually.
On: If the DHW temperature drops by more than two switching
differences (prog. no. 5024) below the reduced setpoint (prog. no.
1612), it will be recharged once to the DHW nominal setpoint
(prog.no.1610).
Important
The automatic push only works if the domestic water operating
mode is activated (ON).
Excess heat draw (5085)
Excess temperature discharge can be triggered by the following functions:
active inputs Hx
Buffer storage tank recooling
Solid fuel boiler excess temperature discharge
If an excess temperature discharge is activated, the excess energy can be
dissipated through the heat discharge of the domestic water storage tank.
With buffer (5090)
If a buffer storage tank is present, it is necessary to enter whether the
domestic water storage tank can be supplied heat from the heat buffer
storage tank.
9 Settings
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