Service Settings
EY.65.H4.02
44
Pre-heat method This function enables the controller to determine the flow temperature level during
the pre-heat period. It is possible to:
• Use the boost function, which increases the flow temperature by a user-defined
percentage. The purpose is to reach comfort room temperature sooner, that is, re-
duce the duration of the pre-heat period.
• Use the slope function, which increases the flow temperature gradually. The aim
is to avoid an unnecessary sudden load of the district heating network and also to
prevent the return temperature from getting too high.
Note:
When Slope time is set, the gradual increase of the flow temperature level is applied
even if the Optimizer function is disabled.
Display text Parameter Default value,
range
Description
Boost factor
Default value:
0 %
Range:
0-100 %
The percentage by which the flow tem-
perature should be increased during the
pre-heat period
Slope time
Default value:
0 min.
Range:
0-200 min.
The length of the time interval during
which the flow temperature should be
increased gradually to its comfort level
Night setback disable This function disables night setback when the outdoor temperature drops below a
user-defined limit.
Display text Parameter Default value,
range
Description
Disable at
Default value:
–15 °C
Range:
OFF,
–29 - 15 °C
When Disable at is set to a temperature,
night setback is disabled when the actual
outdoor temperature is below this limit.
When the outdoor temperature lies in the
interval between 15 °C and the Disable
at temperature setting, night setback is
gradually reduced
When Disable at is set to OFF, night
setback is never disabled
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