57
en
Flo
w temperatur
e in °C
Heating curves
Outdoor temperature in °C
For the summer temperature, a daytime time frame can be adjusted with the chan-
nels Daytime on and Daytime off. Outside this time frame, the adjustable tem-
perature TNight replaces TSummer.
With the Room thermostat option, up to 5 room thermostats can be integrated
into the control logic.
To each room thermostat, a sensor input can be allocated. The temperature at the
allocated sensor is monitored. If the measured temperature exceeds the adjusted
Room temperature value at all activated room thermostats, the heating circuit
pump is deactivated and the mixer remains in its current position.
Common room thermostats with potential-free outputs can be used alternatively.
In this case, Switch must be selected in the Type channel. Beforehand, the corre-
sponding input must also be set to Switch in the Inputs / outputs menu. Only
inputs set to Switch will be displayed in the channel Sen. RTH as possible inputs
for a Switch type room thermostats.
If the Timer RTH option is activated, time frames can be set for the room ther-
mostats. During these time frames, the adjusted room temperature is decreased
by the Correction value.
To each room thermostat, an additional relay can be allocated. That relay will op-
erate when the temperature at the allocated sensor falls below the adjusted room
temperature. This way, the room in question can be excluded from the heating
circuit via a valve as long as the desired room temperature is reached.
In the channel RTH, the room thermostat can be temporarily deactivated or re-ac-
tivated respectively. All adjustments remain stored.
When the Timer option is activated, a timer is indicated in which time frames for
the function can be adjusted.
Note:
For information on timer adjustment see page 11.
Backup heating mode:
By means of the Mode parameter, the backup heating mode can be selected.
In the Therm. mode, the flow set temperature will be compared to a store ref-
erence sensor.
In the Boiler mode, the flow set temperature will be compared to two store
reference sensors. The switching conditions have to be fulfilled at both reference
sensors.
In the on / off mode, the backup heating will be activated when the heating circuit
pump is switched on.
Chimney sweeper function
The chimney sweeper function can be used for enabling a quick access to measure-
ment conditions without menu operation for the chimney sweeper.
If the chimney sweeper function is activated, the chimney sweeper mode can be
accessed by pressing button
➅
for 5 s.
In the chimney sweeper mode, the heating circuit mixer opens, the heating circuit
pump and the backup heating contact are activated. While the chimney sweeper
mode is active, the directional pad is illuminated. Additionally, Chimney sweeper
and a countdown of 30 min are indicated on the display.
When the countdown has elapsed, the chimney sweeper mode is automatically
deactivated. If, during the countdown, button
➅
is again pressed for more than 10
s, the countdown starts again.
In order to abort the countdown and thus deactivate the chimney sweeper mode,
briefly press button
➅
.
Antifreeze option
The antifreeze option of the heating circuit can be used to temporarily activate
an inactive heating circuit during sudden temperature drops in order to protect it
from frost damage.
When the antifreeze option is activated, the temperature at the allocated sensor is
monitored. If the temperature falls below the adjusted Antifreeze temperature,
the heating circuit is activated for the non-adjustable runtime of 30 min. The Anti-
freeze option operates with a fixed set flow temperature which can be changed in
the Flow set channel.
Summary of Contents for BW/H Komfort HE
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