Viessmann Vitosol
100 Technical Manual page 88

4.8 Additional Vitosolic 200 functions
Suppression of reheating by boiler
Systems with Vitotronic control units with KM BUS
*1
Vitotronic 200, type KW1 , KW2
*1
Vitotronic 300, type KW3 and GW2
*3
Vitotronic 333, type MW1
Reheating of the DHW cylinder through
the boiler will be suppressed by the solar
control unit, if the solar circuit pump is
operating.
*1
PCB, part no. 7179 978 required.
*2
PCB, part no. 7170 929 required.
*3
PCB, part no. 7170 930 required.
Systems with additional Viessmann control units
Reheating of the DHW cylinder through
the boiler will be suppressed by the solar
control unit if the solar circuit pump is
Cylinder temperature sensor as PTC
N
PE
B
C
D
E
A Terminal box Vitosolic 200
B Junction box (on site)
C Resistance (on−site) for
PTC: 20 W
NTC: 10 kW
88
*1 *2
, GW1 and HO1
*2
Coding address 67 in the boiler control
unit defaults a third set DHW temperature
(setting range: 10 to 95 ºC). This value
must be below the first set DHW
operating. A 10 K higher actual DHW
temperature is simulated via a resistor.
The DHW cylinder will only be loaded by
L N
A
D Cylinder temperature sensor of the
boiler control unit
temperature.
The DHW cylinder will only be loaded by
the boiler if this set value cannot be
reached by the solar heating system.
the boiler, if this actual temperature
cannot be reached by the solar heating
system.
Cylinder temperature sensor as NTC
N
PE
B
C
D
E
H To the boiler control unit, connection
for cylinder temperature sensor
L N
A
VITOSOL