Boiler - Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors

Codes
Coding level 2
(cont.)
Coding in the delivered condition
99:0 Never adjust
9A:0 Never adjust
9b:70 Set flow temperature for external
demand 70 °C
9C:20 Monitoring LON subscribers.
If there is no response from a sub-
scriber for 20 min, the values
specified in the control unit are
used. Only then will a fault mes-
sage be issued.
9F:8 Differential temperature 8 K; only
in conjunction with a heating circuit
with mixer

Boiler

Coding
Coding in the delivered condition
04:1 Minimum burner pause time sub-
ject to boiler load (specified by
boiler coding card)
06:... Maximum limit of the boiler water
temperature, specified in °C by
boiler coding card
0d:0 Never adjust.
0E:0 Never adjust.
21:0 No service interval set (in hours
run)
23:0 No time set for burner service in-
terval
24:0 "Service" not shown on the dis-
play
29:0 Burner fuel consumption: no me-
tering
2E:0 Never adjust.
2F:0 Venting program/filling program
disabled
30:1 Internal variable speed circulation
pump (set automatically)
52
Possible change
9b:0 Set flow temperature for external de-
to mand adjustable from 0 to 127 °C
9b:127 (limited by boiler-specific parame-
ters)
9C:0 No monitoring
9C:5 Time adjustable from 5 to 60 min
to
9C:60
9F:0 Differential temperature adjustable
to from 0 to 40 K
9F:40
Possible change
04:0 Minimum burner pause time set per-
manently (specified by boiler coding
card)
06:20 Maximum limit of boiler water tem-
to perature within the ranges specified
06:127 by the boiler
21:1 The number of hours run before the
to burner should be serviced is adjust-
21:100 able from 100 to 10,000 h
One adjusting step
23:1 Time interval adjustable from 1 to
to 24 months
23:24
24:1 "Service" is shown on the display
(address is automatically set and
must be manually reset after a serv-
ice has been carried out)
29:1 Entry of 0.1 to 25.5; 1 step
to gallon/h
29:255
2F:1 Venting program enabled
2F:2 Filling program enabled
30:0 Internal circulation pump not speed-
controlled (e.g. temporarily for serv-
ice)
≙
100 h
≙
0.1 l or