37
Description of state:
Phase
Display
Description
Duration
System start
"A"
System start
10 s
Fan ramp-up, system start
max. 20 s
Forced ventilation, system start
20 s
Relay test
"P"
Fan ramp-up for test
max. 20 s
Safety relay test
0.9 s
Disable BV1 relay.
0.9 s
BV1 relay test
0.9 s
Ignition relay test
0.9 s
Disable safety relay.
0.9 s
Ramp up to flue gas damper test speed.
5 s
Check flue gas damper.
max. 60 s
Start-up meter, initialisation
0.1 s
Standby
"0"
Standby
0 ... s
Start-up
"1"
Flame signal amplifier test
max. 50 s
Gas fan and air pressure switch test
max. 20 s
"2"
Fan ramp-up
max. 15 min
"3"
Pre-purge
30 s
Adjust start-up load, WD 1 test.
25 s
"4"
Pre-ignition
1 s
"5"
Safety time
max. 2.6 s
Operation
"6"
Flame stabilising time
15 s
"7"
Start-up, partial load
12 s
Modulating operation
0 to 24 h
Adjust shutdown load.
10 s
Shutdown
"8"
Reheating, WD 2 test.
1 s, max. 30 s
Fan ramp-up, post-purge
max. 20 s
Post-purge
10 s
Waiting
"U"
Waiting for restart
min. 1 min
"C"
Waiting for mains gas pressure
min. 5 min
Fault status
"9"
Forced ventilation fault
20 s
"10"
Flame tear-off
0.5 s
"11"
Safety shutdown
0 ... s
"F"
Fault shutdown
0 ... s
Burner control unit
Flow diagram
(cont.)
5816717
Codes
