144
48 °C
Boiler temperature
HC1
14°C
21°C
Heating mode
The control unit determines a set boiler
water temperature subject to outside
temperature or room temperature (if a
room temperature-dependent remote
control is connected) and to the slope/
level of the heating curve.
The determined set boiler water temper-
ature is transferred to the burner control
unit. From the set and actual boiler water
temperatures, the burner control unit cal-
culates the modulation level and regu-
lates the burner accordingly.
The electronic temperature limiter inside
the burner control unit limits the boiler
water temperature.
DHW heating
The burner and the circulation pump for
cylinder heating are started if the DHW
temperature lies 2.5 K below the set
DHW temperature.
In the delivered condition, the set boiler
water temperature is 20 K higher than
the set DHW temperature (adjustable via
coding address "60"). The burner will be
switched off and the circulation pump
run-on time will begin, if the actual DHW
temperature exceeds the set DHW tem-
perature by 2.5 K.
Function description
Weather-compensated control unit
5585 174 GB