Viessmann VITODENS 200 Start-Up/Service Instructions page 44

Additional Information
Control Unit for Weather-Responsive Operation
Refer to the Vitodens 200 Installation Instructions for piping layout details.
*1 Circulating pump and check valve are external to the boiler and not internal as illustrated.
44
with programming unit
Heating system types
The control unit is adjusted to the system equipment.
In the factory default setting, the heating system type is
coded "000:000".
The coding is set automatically when a tank
temperature sensor is connected (for operation with
a DHW tank).
The control unit must be re-coded manually if a
heating circuit with mixing valve is connected:
For this purpose the corresponding heating system
type is coded in the coding address "000".
For other settings please note the numbers of system
types. See page 45 for information of how to access
the required coding level.
Note: If only heating circuit B with mixing valve is
connected (i.e. there is no direct-connected
heating circuit), the coding addresses "044,
045 and 046" must each be set to the value
"001".
System type "000:000"
Heating system with one heating circuit
without mixing valve, without DHW
heating.
or
Heating system with low-loss header and
heating circuits connected downstream
with separate heating circuit control unit
(Dekamatik-HK), without DHW heating.
System type "000:001"
Heating system with one heating circuit
without mixing valve, with DHW heating
or
Heating system with low-loss header and
heating circuits connected downstream
with separate heating circuit control unit
(Dekamatik-HK), with DHW heating.
System type "000:002"
Heating system with one heating circuit
with mixing valve, without DHW heating
(with or without low-loss header)
or
Heating system with one heating circuit
with mixing valve, and one heating circuit
without mixing valve, without DHW
heating (with or without low-loss header).
System type "000:003"
Heating system with one heating circuit
with mixing valve, with DHW heating
(with or without lowloss header)
or
Heating system with one heating circuit
with mixing valve, and one heating circuit
without mixing valve, with DHW heating
(with or without low-loss header).
Vitodens 200 WB2 Service
(continued)