Operating instructions

82
Coding in the delivered condition Possible change
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
23:0 No time interval for
burner service
23:1
to
23:24
Interval adjustable from 1
to 24 months
24:0 No "Service" display 24:1 "Service" display (the
address is automatically
set and must be manually
reset after a service has
been carried out)
28:0 No burner interval igni-
tion
28:1
to
28:24
Time interval adjustable
from 1 to 24 h. The burner
is force-started once every
30 s (only when operating
with LPG)
2E:0 Never adjust
2F:0 Venting program/fill pro-
gram disabled
2F:1 Venting program enabled
2F:2 Fill program enabled
30:1 Internal variable speed
circulation pump (auto-
matic adjustment)
30:0 Internal circulation pump
without variable speed
(e.g. temporarily for serv-
ice)
31:... Set speed in % of the
internal circulation pump
when operated as boiler
circuit pump, specified by
the boiler coding card
31:0
to
31:100
Set speed adjustable from
0 to 100 %
38:0 Status burner control unit:
Operational (no fault)
38:≠0
Status burner control unit:
Fault
DHW/Group "3"
Select "DHW" for weather-compensated control units (see page 72).
Select "3" for constant temperature control units (see page 72).
Code 2
Boiler/Group "2"
(cont.)
5457 552 GB