149
4 8
°C
s
A
Heating mode
The selected set boiler water tempera-
ture will be maintained when a demand
is being raised by the room thermostat
and the heating program is set to DHW
and central heating "
G
".
The boiler water temperature will be
maintained at the default frost protection
temperature when there is no demand.
The electronic temperature limiter inside
the burner control unit limits the boiler
water temperature.
Flow temperature setting range: 20 to
74 °C.
DHW heating
The burner, the circulation pump and the
3-way valve are started or changed over
if the cylinder temperature lies 2.5 K
below the set cylinder temperature.
In the delivered condition, the set boiler
water temperature is 20 K above the set
cylinder temperature (adjustable via
coding address 60 in group
"DHW"
).
The burner will be switched off and the
circulation pump run-on time will begin if
the actual cylinder temperature exceeds
the set cylinder temperature by 2.5 K.
Function description
Constant temperature control unit
5773 216 GB
Service
Содержание Vitodens 222-F B2TA series
Страница 12: ...12 2 5 1 4 2x 3 Installing the boiler Removing the front panels 5773 216 GB...
Страница 13: ...13 1 2 SW17 Installing the boiler Siting and levelling the boiler 5773 216 GB Installation...
Страница 19: ...19 2x 4x 4 3 5 2 1 Installing the boiler Opening the control unit casing 5773 216 GB Installation...
Страница 29: ...29 5 4 2 6 2x 3 1 Installing the boiler Closing the control unit casing 5773 216 GB Installation...
Страница 31: ...31 4 1 5 2 2x 3 Installing the boiler Fitting the front panels 5773 216 GB Installation...
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