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6. Heating system control
On/Off button
(Appliance „Off“ displays water
pressure)
in the edition "classic" without function
Service button (if this button is pressed during normal
operation, the actual value of the current operating
mode of the boiler is displayed in the two-digit display)
Reset button
+ / - (change values)
6. Heating system control
6.1 Operating elements of the boiler control panel / basic control N4.3
Normally the user does not need to change the basic control settings. All necessary settings
have been adjusted by the installer or at the factory.
Operating Status Display in the Service Display
Operating Status
Off, water pressure display
The appliance receives voltage, the heating operation and the DHW mode are switched off, but
the freeze protection is active. The actual water pressure, which does not cause a reaction in any
of the operating modes, is displayed for information only.
Off, no heating requirement
The appliance is ready for operation and will be turned on immediately when there is a heating
or DHW requirement
After-Run Time Pump in Heating or Hot Water Operation
After operating the boiler in the heating or DHW mode, the pump continues to run.
Target Temperature Reached
Should the desired target temperature including the potentially added offset be exceeded, the
burner turns off.
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Service display
Operating mode / target value setting / actual value display
During normal operation the operating mode is displayed by the LEDs (DHW / HT)
The following can be adjusted by pressing the temperature selection button:
- Max. Temperature for heating operation (adjustable by using the -/+ button,
the value selected here also limits the target value transmitted via the OT bus)
- Target value for warm water (adjustable by using the -/+ button,
an overlay with the values from the OT bus is possible)
