Operating instructions

24
System details/functions
Special functions (cont.)
Additional function for DHW heating
Only possible in conjunction with control unit with KM BUS (Vitotronic and
Calotronic) and connection extension VitosolicĂ100.
Connection of the KM BUS to terminals 7 and 8 in the solar control unit.
Select SFĂ=Ă3 at the setting level.
In systems with a capacity above
400Ălitres, the entire water content
must be heated to 60ĂºC once every
day. For this, an additional
circulation pumpĂD can be started
(for connection to connection
extension, see pageĂ22).
At the boiler control unit, the
additional function for DHW heating
(secondĂset DHW temperature,
e.
Ăg. code "58:60") must be encoded,
and the fourth DHW phase must be
activated.
This signal is transferred via the
KM BUS to VitosolicĂ100, and the
circulation pump will be started.
Thermostat function
Select SFĂ=Ă4 at the setting level.
Relay outputĂR
Ă2 and sensor inputĂSĂ3
are used for thermostat function,
which can be used independent of
the solar operation, e.
Ăg. for utilising
excess heat.
Set the thermostat start-up temp-
eratureĂ"TO" and the thermostat
shutdown temperatureĂ"TF" at the
setting level.
As delivered condition:
TO =Ă40ĂºC,
TFĂ =Ă45ĂºC
Setting range:
0 to 90ĂºC
TOĂ=ĂTF: Thermostat function
inactive; relayĂ2 starts when
the maximum cylinder
temperature is exceeded
TOĂ>ĂTF: Thermostat function for
utilising excess heat
TOĂ<ĂTF: Thermostat function for
reloading
The display showsĂ"
" if the
secondĂrelay output is switched ON.
5862Ă490ĂGB