Viessmann Vitosol 100-FM Technical Manual page 32

Solar control units
Cylinder temperature sensor of the boiler control unit
PTC
A
B
C
D
E
C Resistor 20 Ω, 0.25 W (on-site)
A Solar control unit wiring chamber
B Junction box (on site)
D Cylinder temperature sensor of the boiler control unit
E To the boiler control unit; connection for cylinder temperature sensor
Suppression of reheating by the boiler with central heating
backup, with solar control module
If a sufficiently high temperature is available in the multi-mode heat-
ing water buffer cylinder to heat the heating circuits, reheating is
suppressed.
Auxiliary function for DHW heating with solar control module
6
For detailed information see chapter "Auxiliary function for DHW
heating".
Enabling the auxiliary function for DHW heating must be encoded at
the boiler control unit. The solar preheat stage can be heated up at
the selectable times.
Boiler control unit settings:
■ The set DHW temperature 2 must be encoded
■ The DHW phase 4 for DHW heating must be enabled
Via a KM BUS, this signal will be transferred to the Vitosolic 100,
and the transfer pump will be started.
Auxiliary function for DHW heating with Vitosolic 100
For detailed information see chapter "Auxiliary function for DHW
heating".
Only possible in conjunction with Vitotronic control units with KM
BUS.
Control units from the current Viessmann product range are equip-
ped with the necessary software. When retrofitting an existing sys-
tem, the boiler control unit may have to be equipped with a PCB (see
Viessmann pricelist).
VIESMANN
32
(cont.)
NTC
A
B
C
D
E
C Resistor 10 kΩ, 0.25 W (on-site)
Boiler control unit settings:
■ The set DHW temperature 2 must be encoded
■ The DHW phase 4 for DHW heating must be enabled
Via a KM BUS, this signal will be transferred to the Vitosolic 100,
and the transfer pump will be started.
Auxiliary function for DHW heating with Vitosolic 200
For detailed information see chapter "Auxiliary function for DHW
heating".
Systems with Vitotronic control units and KM BUS
Control units from the current product range are equipped with the
necessary software. When retrofitting an existing system, the boiler
control unit may have to be equipped with a PCB (see Viessmann
pricelist).
Boiler control unit settings
■ Set DHW temperature 2 must be encoded
■ DHW phase 4 for DHW heating must be enabled
This signal is then relayed via the KM BUS to the solar control unit.
The transfer pump starts at an adjustable time if the DHW cylinder
has not reached 60 ºC at least once per day.
VITOSOL