Heating mode
The selected set boiler water tem-
perature will be maintained when a
demand is being raised by the room
temperature-dependent clock thermo-
stat and the heating program is set to
DHW and central heating "
G
". The
boiler water temperature will be main-
tained at the default frost protection
temperature when there is no
demand. The burner control unit limits
the boiler water temperature: by the
control thermostat to 74 °C, by the
electronic temperature limiter to 81
°C. The temperature limiter in the
safety chain locks out the burner con-
trol unit at a boiler water temperature
of 100 °C.
DHW heating
DHW heating will be activated if the
cylinder temperature is 2.5 K below
the set cylinder temperature. The
burner, the circulation pump and the
three-way valve are started or chan-
ged over. In the delivered condition,
the set boiler water temperature lies
20 K higher than the set DHW tem-
perature (adjustable in coding
address "60"). If the actual cylinder
temperature rises 2.5 K above the set
cylinder temperature, the burner will
be switched OFF and the cylinder pri-
mary pump run-on time will be acti-
vated.
A
Heating programs
B
Comfort function (disabled)
C
Information
D
Standard settings
E
Confirmation
F
Setting values
G
DHW temperature
Constant temperature control unit
93
Function description
5692
569
GB
Содержание Vitodens 300
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