Viessmann Vitosol
100 Technical Manual page 89

Cylinder 2 ON
This function enables a second consumer
(e.g. calorifier or swimming pool) to be
taken out of the control unit.
DHW loading
This function enables a given physical
range of the DHW cylinder to be heated,
defined through the sensor location.
Additional function for DHW heating
Additional function in conjunction with Vitotronic control units and KM BUS
At the boiler control unit,
H a second set DHW cylinder temperature
must be encoded
H the fourth DHW phase for DHW loading
must be activated.
Additional function in conjunction with additional Viessmann control units
The circulation pump (relayering pump)
is started at an adjustable time, if the
DHW cylinder has not been heated to
60 ºC at least once every day.
N
PE
B
C
D
VITOSOL
Break or short circuit of cylinder
temperature sensor T
notified.
This function is achieved via two
thermostats or one relay.
This signal is transferred via the KM BUS
to the solar control unit, and the
circulation pump will be started.
A DHW temperature of approx. 35 ºC is
simulated via a resistor.
L N
M
1~
F
E
4.8 Additional Vitosolic 200 functions
is no longer
cyl2u
A
L
N
PE
A Terminal box Vitosolic 200
B Contactor relay, part no. 7814 681
C Resistance (on−site) for
PTC: 560 W
NTC: 8.2 kW
D To the boiler control unit, connection
for cylinder temperature sensor
E Cylinder temperature sensor of the
boiler control unit
F Relayering pump
89