Viessmann Vitosol100 - Additional Vitosolic 100 Functions

4.7Additional Vitosolic 100 functions
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VITOSOL
4.7 Additional Vitosolic 100 functions
Suppression of reheating by boiler
Systems with Vitotronic control units with KM BUS
Reheating the DHW cylinder by the boiler
will be suppressed by the solar control
unit if the solar circuit pump is operating.
In the boiler control unit, coding
address67 ON defaults a third set DHW
temperature (setting range: 10 to 95ºC).
This value must be below the first
setDHW temperature.
The DHW cylinder will only be loaded by
the boiler (solar circuit pump running) if
this set value cannot be reached by the
solar heating system.
Systems with alternative Viessmann control units (only in conjunction with connection extension)
Reheating the DHW cylinder by the boiler
will be suppressed by the solar control
unit if the solar circuit pump is operating.
An approx. 10K higher actual DHW
temperature is simulated via a resistor in
the connecting extension.
The DHW cylinder will only be heated by
the boiler (solar circuit pump running) if
this actual temperature is not achieved by
the solar heating system.
A Connecting extension
B Vitosolic100
C Heating circuit pump
D Circulation pump for heating up the
pre−heat stage (auxiliary function for
DHW loading)
E High limit safety cut−out
(if required)
F Cylinder temperature sensor(NTC)
of the boiler control unit
G Cylinder temperature sensor(PTC)
of the boiler control unit
H To the boiler control unit (connection
for cylinder temperature sensor)
K Mains isolator, on site
*1
Remove jumper when making this
connection.
5822135 GB
1 2 3 4 5
PTC
NTC
PTC Control
unit
LR1N R2 N LN
USPSOP STB
X1
1~
M
*1
1~
M
or
CD
E
X2 X3
F
G
K1
R1
K1
R2
PE NL
A
12 13 14 15 16 17 18 19 20
NR2 NR1N L
230 V
50 Hz
B
BU BK BN
K
H