BCU 480 · Edition 03.16l 29
Parameters
4 Parameters
Description Parameter Value range
Factory
default setting
Adjustable*
Flame signal, pilot burner 01
0–99 μA
Flame signal, main burner 02
0–99 μA
Program status when the most recent fault occurred 03 x0–x8
Switch-off threshold, pilot burner 04
1–20 µA 1 µA
Switch-off threshold, main burner 05
1–20 µA 1 µA
Start-up attempts, pilot burner** 10 1–4 1
Start-up attempts, main burner** 11 1–4 1
Restart, pilot burner 12 0; 1 0
Restart, main burner 13 0; 1 0
Safety time during operation for V1 and V2 t
SB
14 1; 2 s 1 s
Flame simulation check in start-up position/standby 15 0; 1 1
Permanent pilot burner 16 0; 1 1
Minimum burner on time t
B
20 25 s t
SA
Minimum burner pause time t
BP
21 0–250 s 0 s
Pilot burner safety time on start-up t
SA1
** 22 3; 5; 10 s
Pilot burner flame proving period t
FS1
23 0–25 s 0 s
Main burner safety time on start-up t
SA2
** 24 3; 5 s
Main burner flame proving period t
FS2
25 0–25 s 0 s
Air valve control 30 0; 1; 2; 3 0
Air valve can be activated externally on start-up 31 0; 1 0
Air valve closed/can be activated in the event of malfunction 32 0; 1 1
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