Control Technology
28
Outdoor Reset Programming Unit
(continued)
Heating system types
During initial start-up the control until must be matched to the type of heating
system installed. In the factory default setting, the heating system type is coded
as ”00:1” (heating system with one heating circuit without mixing valve, without
domestic hot water heating.
If a heating circuit with mixing valve is connected, for example, the control unit
must be re-coded manually in coding level 1 or 2 (see page 37 on how to access
coding level 1 or page 40 on how to access coding level 2). Enter corresponding
heating system type code in coding address ”00:1”. See page 38 for codes for
other system types.
See below for an overview of heating system types and corresponding codes.
Refer to the Vitodens 200-W Installation Instructions for system layout details.
In any of the following system layouts that use a low-loss header, the DHW
tank can be installed downstream of the low-loss header. See the boiler
Installation Instructions for alternative DHW connection location, as well as
coding addresses “A2” and “5b” in coding level 2.
System type 1 or 2
(with or without low-loss header)
Heating system with one heating circuit without mixing valve, with/without
domestic hot water heating
Coding address “00:1” Without DHW heating
Coding address “00:2” With DHW heating
System type 3
(with or without low-loss header)
Heating system with one heating circuit with mixing valve and system sepa-
ration, with/without domestic hot water heating.
Coding address “00:3” Without DHW heating
Coding address “00:4” With DHW heating
5
4
4
3
2
0
7
v
1
.5
