Operating instructions

79
Coding in the delivered condition Possible change
51:0 System with low loss
header:
Internal circulation pump
always starts when there
is a heat demand
51:1 System with low loss head-
er:
When there is a heat de-
mand, the internal circula-
tion pump is only started if
the burner is operational.
Circulation pump is switch-
ed off on expiry of run-on
time.
51:2 System with heating water
buffer cylinder:
When there is a heat de-
mand, the internal circula-
tion pump is only started if
the burner is operational.
Circulation pump is switch-
ed off on expiry of run-on
time.
52:0 Without flow temperature
sensor for low loss head-
er
52:1 With flow temperature sen-
sor for low loss header (au-
tomatic recognition)
53:1
Function connection sK
of the internal extension:
DHW circulation pump
53:0
Function connection sK:
Central fault message
53:2
Function connection sK:
External heating circuit
pump (heating circuit 1)
53:3
Function connection sK:
External circulation pump
for cylinder heating
54:0 Without solar thermal
system
54:1 With Vitosolic 100 (auto-
matic recognition)
54:2 With Vitosolic 200 (auto-
matic recognition)
54:3 No function
54:4 With solar control module
SM1 with auxiliary function,
e.g. central heating backup
(automatic recognition)
6E:50 No display correction of
the outside temperature.
6E:0
to
6E:49
Display correction –5 K to
–0.1 K
Code 2
"General"/group 1
(cont.)
5772 909 GB
Service