Viessmann BWT 221.A06, Installation And Service Instructions Manual

Page: 62 / 124

62
Commissioning without the commissioning assistant
Enabling the service menu
The service menu can be enabled from
any menu.
Press
OK +
å
simultaneously for
approx. 4 s.
Disabling the service menu
The service menu remains active until it
is disabled with
"Terminate service?" ,
or if no operation takes place for 30
minutes.
Setting parameters using the "Sys-
tem scheme" example
To set a parameter, first select the
parameter group and then the parame-
ters.
All parameters are displayed as plain
text. A parameter code is also assigned
to each parameter.
Service menu:
1. Press
OK +
å
simultaneously for
approx. 4 s
2. Select "Coding level 1"
3. Select parameter group: "System
definition"
4. Select parameter: "System scheme
7000"
5. Set system scheme: "6"
Alternatively, if the service menu was
already enabled:
Extended menu
1.
å
2. "Service"
3. Select "Coding level 1"
4. Select parameter group: "System
definition"
5. Select parameter: "System scheme"
6. Confirm parameter code: "7000"
7. Set system scheme: "6"
Required parameters for components connected on site
Detailed explanations regard-
ing the parameters
Service instructions for Vitotronic
200 heat pump control unit
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5601 574 GB