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Vitodens 100-W, B1HA/B1KA 26 to 125 Combi Installation/Service
Burner Program Sequence of Operation
Start-up and Maintenance
*
1
50 seconds for no flame present check and 20 seconds for blower stand-stil check (total 70 seconds).
*
2
20 second fan operation if flame failure is detected.
Phase
Explanation
End of sequence
0
Stand by
Continue to next phase
1
Stand-still status test (safety check)
Safety shutdown
2
Maximum blower RPM verification
Continue to next phase
3
Pre-purge
Continue to next phase
4
Pre-ignition time
Retrial for ignition or safety shutdown
5
Ignition / safety timing
Continue to next phase
6
Flame stabilization time
Continue to next phase
7
Forced low-fire
Continue to next phase
8
Burner in operation: controller active
Continue, or if FHL tripped, 15 minute forced fan operation
9
Post-purge
Continue to next phase
10
Combination gas valve proof of closure test
Continue to next phase
0
Boiler shutdown / stand-by
Waiting for next call for heat
Start-up and Maintenance
>1500 rpm
>1500 rpm
Transition
Modulation range
Call for heat
Fan control
Fan required
signal
Ignition
Combination
gas valve
Flame signal
Sequence time
O: Stand-by
1: Stand-still status
test (safety check)
2: Maximum blower
RPM verification 3: Pre-purge
4: Pre-ignition time
5: Ignition / safety
timing
6: Flame stabilization
time
7: Forced low fire
8: Burner in operation:
controller active
9: Post purge speed
test
10: Combination gas
valve proof of
closer test
O: Stand-by
max. 70 s *1 max. 20 s
0.9 s
0.3 s
min. 4.2 s
max. 4.8 s
5 s
0.12 s
1.4 s *2
Additional Information
