Viessmann B2UA, Installation And Service Instructions Manual

Page: 88 / 200

88
Coding in the delivered condition Possible change
Lock out controls
8F:0 Operation enabled in
standard menu and ex-
tended menu.
Note
The respective code is
only activated when you
exit the service menu.
8F:1 Operation blocked in
standard menu
and exten-
ded menu.
Emissions test mode can
be enabled.
8F:2 Operation enabled in
standard menu and
blocked in extended
menu.
Emissions test mode can
be enabled.
Set flow temperature for external demand
9b:70 Set flow temperature for
external demand 70 °C 9b:0
to
9b:127 Set value adjustable from 0
to 127 °C (limited by boiler-
specific parameters)
"Boiler"
Select group "Boiler" (see page 85).
Coding
Coding in the delivered condition Possible change
Burner service in 100 hours
21:0 No service interval (hours
run) selected 21:1
to
21:100 The number of hours run
before the burner should
be serviced is adjustable
from 100 to 10 000 h.
One adjusting step
≙
100 h
Service interval in months
23:0 No interval for burner
service 23:1
to
23:24 Interval adjustable from 1
to 24 months
Code 1
"General"
(cont.)
5773 238 GB