Viessmann VITOTRONIC300 Installation And Service Instructions Manual page 108

Code 2
"Boiler" Group
Coding in the factory set condition
1F:0 With flue gas temperature sensor:
Flue gas temperature is not monitored for
service display.
21:0 No service interval (hours run) selected.
23:0 No interval for service.
24:0 No "Service" display.
26:0 Burner fuel consumption (stage 1):
No count if "26:0" and "27:0"
are programmed.
27:0 Burner fuel consumption (stage 1):
No count if "26:0" and "27:0"
are programmed.
28:0 No burner interval ignition.
29:0 Burner fuel consumption (stages 1 and 2);
No count if "29:0" and "2A:0"
are programmed.
2A:0 Burner fuel consumption (stage 2);
no count if "29:0" and "2A:0"
are programmed.
2d:0 Shunt pump "ON" only in case of demand.
108
(continued)
Vitotronic 300, GW2B Installation and Service
Possible change
1F:1 When the flue gas temperature limit
to is exceeded, "Service" is displayed.
1F:250°C
21:1 The number of hours run before the burner
to should be serviced is adjustable from 100
21:100 to 10,000 h.
1 step 100 h.
23:1 Interval adjustable from 1 to 24 months.
to
23:24
24:1 "Service" display (the address is
automatically set and must be manually
reset after a service has been carried out).
26:1 Input of 0.1 to 9.9;
to 1 step 0.1 L/h or gallons/h
26:99
Note: Values of coding addresses "26"
and "27" are added together.
27:1 Input of 10 to 1990;
to 1 step 10 L/h or gallons/h
27:199
28:1 Time interval adjustable from 1 to 24 h.
to The burner is force started for 30 sec. each
28:24 time.
29:1 Input of 0.1 to 9.9;
to 1 step 0.1 L/h or gallons/h
29:99
Note: Values of coding addresses "29"
and "27" are added together.
2A:1 Input of 10 to 1990;
to 1 step 10 L/h or gallons/h
2A:199
2d:1 Shunt pump constantly "ON".