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6.9 AUTO HEATING REGULATION.
It is possible to regulate the temperature at which the boiler drives the water heating circuit depending on the outdoors
temperature. This method of regulation provides maximum comfort as it anticipates changes in the thermal needs of the
house. The room thermostat continues to regulate the temperature inside the house.
To activate this mode of heating, the installer will need to connect an external temperature sensor (not supplied) and
activate the P05 and P11 parameters.
There are four parameters that define this function.
TIMAX.
Maximum water flow temperature in AUTO heating mode.
In the above example TIMAX=80ºC.
TIMIN.
Minimum water flow temperature in AUTO heating mode.
In the above example TIMIN=20ºC.
TEMAX.
Outdoor temperature from which the water flow temperature will be TIMIN.
In the above example TEMAX=15ºC.
TEMIN.
Outdoor temperature below which the water flow temperature will be TIMAX.
In the above example TEMIN=2ºC.
On the coldest days the water will be driven at higher temperatures and vice versa on the hottest days-less water will be
driven at a lower temperature. In the example we see how, if the outdoors temperature is of 5ºC the water flow
temperature heating circuit would be about 66 °C.
You can temporarily override the automatically calculated set point. If, for example, you want to use the boiler to the
maximum for a few hours even when automatic control mode, you would proceed as follows.
When pressing the
or
. By holding down either of these two keys for at least 5 seconds, the calculated set point will start flashing and
the set point can now be modified with the same keys. Validate the selection by pressing the
set point is going to be overridden is shown:
Validate the selection by pressing the
every 10 seconds. At any time, it is possible to cancel this state just by turning off and restarting the boiler
button, the display will alternatively show the calculated set point and the indication
. It can be modified from 1 to 24h.
button. The override set point and the time remaining are displayed alternatively
38
button. The time that the
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