Lumina 35
Explanation control functions
14
The control computer activates heating if the house
temperature drops below
Setpoint
– hysteresis
. If the
house temperature rises, the heating will stay on until the
control value heating is reached.
A set
Repeat time
can be used to prevent unnecessary
activation/deactivation of the heating. When the heating
activates, it will remain on for at least the
Repeat time
.
When the heating deactivates, it will remain off for a
minimum of this time.
The heating is
continuously
on, if the temperature of the heating control is lower than
Setpoint
– hysteresis
.
The heating is
continuously
off, if the temperature is equal to or higher than the
Setpoint
.
Heating is
modulating
on, if the temperature is in the
Hysteresis
. The control computer calculates the modulation
time based on the
Repeat time
.
Example: Time modulating heating control
Inside
Hysteresis
the control computer controls heating during a part of the
Repeat time
. The control
computer calculates this on/off time as follows:
•
Setpoint
:
20.0 °C
•
Measured house temperature:
19.6 °C
•
Hysteresis
:
1.0 °C
•
Repeat time
:
100 sec.
The heating relay will repeatedly be on for 40 seconds and off for 60 seconds.
With analog heating control the heating is controlled by a P- or PI-control. Use Repeat time to determine the type
of heating control. If the Repeat time is less than 10 seconds, a P-band control is concerned. In other cases PI-
control applies.
Summary of Contents for Lumina 35
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