Viessmann WB2-44 - Heating System Types

Additional Information
49
Control Unit for Weather-Responsive Operation
with programming unit (continued)
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”.
H The c oding is set automatically when a tank temperature sensor is connected (for operation with a DHW tank).
H 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 numbers of system types.
See page 50 for information of how to access the required coding level.
Please note:
If only heating circuit B with mixing valve is connected (i.e. there is no direct-connected heating circuit), coding address
”008” must be set to value ”001”.
Refer to the Vitodens 200 Installation Instructions for piping layout details.
MM
*1
*1
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.
MM
*1
*1
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.
M
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).
M
System type ”000:003”
Heating system with one heating
circuit with mixing valve,
with 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, with DHW
heating (with or without low-loss
header).
*1
Circulating pump and check valve are external to the boiler and not internal as illustrated.
5285 961 v1.3