Viessmann Vitodens 222-F B2TA series, Installation And Service Instructions Manual, Page: 79 / 196

79
Coding in the delivered condition Possible change
Internal circulation pump function
51:0 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
Subscriber no.
77:1 LON subscriber number
(only for weather-com-
pensated control units) 77:2
to
77:99 LON subscriber number,
adjustable from 1 to 99:
1 - 4 = Boiler
5 = Cascade
10 - 97 = Vitotronic 200-H
98 = Vitogate
99 = Vitocom
Detached house/apartment building
7F:1 Detached house (only for
weather-compensated
control units) 7F:0 Apartment building
Separate adjustment of
holiday program and time
program for DHW heating
possible
Code 1
"General"/group 1
(cont.)
5773 216 GB
Service