Additional Function For Dhw Heating - Viessmann VITOSOLIC 200 Installation And Service Instructions Manual

Function description
Cyclical heating
2. Main menu
■ "Solar"
■ "Setting values"

Additional function for DHW heating

Systems with Vitotronic control units and KM BUS
■ Connection of the transfer pump to R3
or R5 (subject to the selected system
and hydraulic type, see from page 94).
■ Signal for starting the transfer
pump via the KM BUS of the boiler
control unit. This also heats the lower
area of the DHW cylinder to the
required temperature.
1. Possibly replace the PCB in the boiler
control unit (see table on
page 167).
2. Connect the KM BUS at input aVG in
the solar thermal system (see
page 68).
3. Encode the second set DHW temper-
ature at the boiler control unit.
DHW will be heated to that tempera-
ture if this function is activated.
Installation and service
instructions; boiler control
unit
136
(cont.)
– "Tcyl2 set 1" to "Tcyl2 set 4"
Delivered condition 60 °C
Set a value.
4. Adjust the fourth DHW phase at the
boiler control unit.
During this time, DHW will be heated
to the second set value if this function
is activated.
Operating instructions, boiler
control unit
5. Make the following setting at the solar
control unit:
Main menu
■ "System"
■ "Options"
– "Add. fct."
Set "Yes".