Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 94

Code 2
"General"/group 1
Coding in the delivered condition
51:0 Internal circulation pump
always starts when there
is a heat demand
52:0 Without flow temperature
sensor for low loss head-
er
53:1 Function connection sK
of the internal extension:
DHW circulation pump
54:0 Do not adjust
6E:50 No display correction of
the outside temperature.
76:0 Without LON communi-
cation module (only for
weather-compensated
control units)
77:1 LON subscriber number
(only for weather-com-
pensated control units)
94
(cont.)
Possible change
51:1
51:2
52:1
53:0
53:2
53:3
6E:0
to
6E:49
6E:51
to
6E:99
76:1
77:2
to
77:99
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
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
With flow temperature sen-
sor for low loss header (au-
tomatic recognition)
Central fault message
External heating circuit
pump (heating circuit 1)
External circulation pump
for cylinder heating
Display correction –5 K
to
Display correction –0.1 K
Display correction +0.1 K
to
Display correction +4.9 K
With LON communication
module (automatic recog-
nition)
LON subscriber number,
adjustable from 1 to 99:
1 - 4 = Boiler
5 = Cascade