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57
AST 14 C 255/00
The board independently detects the presence of the external temperature probe and
enables the thermoregulation function, by keeping the flow temperature within the heating
temperature pre-selection range (35 °C ÷ 78 °C or 35 °C ÷ 45 °C).
If both the external probe and the remote control are present, assuming that the remote
control is able to set and carry out its own thermoregulation, the modulation board
transmits the external temperature value to the remote control, and if the heating request
is determined by the same control, this will determine the flow temperature according to its
thermoregulation curve and to the room temperature previously set.
Otherwise, if the heating request comes simultaneously from the remote control and the
amb. T. contact closing on the board, both the remote control and the modulation board
independently calculate the flow temperature according to relevant thermoregulation
curves and set ambient temperatures. The highest of the two flow temperature values will
be used.
Thermoregulation curve setting
To access the parameter setting mode, press “reset” and “boiler status” keys
simultaneously for three seconds.
Use “+/- heating” keys, to select parameter P10. Press “OK” to confirm that parameter
value must be edited (the wrench symbol indicates that parameter value can be edited
using keys “+/- heating”):
For high temperature systems, it is recommended to set parameter P10 to a
value between 1 and 2.
For low temperature systems, it is recommended to set parameter P10 to a value
between 0.2 and 0.8.
Then confirm the modification of the parameter value by pressing the “ok-COMFORT” key
and quit programming with the “reset” key.
