Honeywell krom schroder BCU 440 - Flame Control; Burner Flame Signal; Switch-Off Threshold of the Flame Amplifier; Behaviour During Start-Up

BCU 440 · Edition 01.17 14
Parameters
4.2 Flame control
4.2.1 Burner flame signal
Parameter 01
Flame signal of the burner, display in µA, measuring
range: 0–30 µA.
4.2.2 Switch-off threshold of the flame amplifier
Parameter 04
The sensitivity at which the burner control unit still de-
tects a flame can be set between 1 and 20 µA.
The measured flame signal of the system’s “own” burner
should be at least 3 µA (empirical value) higher than the
set switch-off threshold.
4.3 Behaviour during start-up
4.3.1 Safety time on start-up t
SA
Parameter 22
t
SA
t
Z
t
W
88
01
ϑ
t
1
7
9
18-19
12
16-17
02 04
This indicates the safety time on start-up t
SA
for the
burner.