Viessmann Vitodens 200 Service Manual page 27

Further details regarding the individual steps
Matching the control unit to the heating system
Note
The control unit must be matched to the system equipment. Various system
components are automatically recognised by the control unit, and codes are
automatically set.
In the following system designs, DHW loading is illustrated with a separate
DHW cylinder. The designs also apply to systems where DHW is heated by an
integral instantaneous water heater. In that case, the cylinder temperature sen-
sor % is factory fitted to the boiler.
&
For selection of an appropriate design, see the following diagrams.
&
For coding steps, see page 39.
System design 1
With/without DHW loading/heating with one heating circuit without mixer
A1
! Outside temperature sensor (only
for weather-compensated control
units)
or
Required coding
Operation with natural gas (as delivered condition)
or
Initial start-up, inspection, maintenance
(cont.)
lH Vitotrol 100 (only for constant
temperature control units)
% Cylinder temperature sensor
Address
1E:0
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