Viessmann Vitodens 200-W Installation Instructions Manual page 67

General/group "1"
Value System
address version
00: ...
7 4
8 4
9 4
10 4
Coding in the delivered condition
Internal circulation pump function
51:0 System with low loss
header:
internal circulation pump
always starts when there
is a heat demand
(cont.)
Description
One heating circuit with mixer M2 (heating circuit 2) and one
heating circuit with mixer M3 (heating circuit 3), without DHW
heating
One heating circuit with mixer M2 (heating circuit 2) and one
heating circuit with mixer M3 (heating circuit 3), with DHW
heating
One heating circuit without mixer A1 (heating circuit 1), one
heating circuit with mixer M2 (heating circuit 2) and one heat-
ing circuit with mixer M3 (heating circuit 3), without DHW
heating (code is set automatically)
One heating circuit without mixer A1 (heating circuit 1), one
heating circuit with mixer M2 (heating circuit 2) and one heat-
ing circuit with mixer M3 (heating circuit 3), with DHW heating
(code is set automatically)
Possible change
51:1
51:2
Code 1
System with low loss head-
er:
when there is a heat de-
mand, the internal circula-
tion pump only starts if the
burner is operational.
Circulation pump stops on
expiry of the run-on time.
System with heating water
buffer cylinder:
when there is a heat de-
mand, the internal circula-
tion pump only starts if the
burner is operational.
67