16
LEARNING THE TARGET FLAME
Ensure that the scanner is operating correctly prior to commissioning.
Note: Step 1 and Step 2 must be completed as a minimum to operate the scanner. Once Step 2
“Learn/Store the Target Flame” is completed the scanner will automatically set all flame switching
thresholds. This would apply to a single flame application. Optionally Step 3 “Learn/Store the Back-
ground Flame” can be used to adjust the off switching threshold to discriminate a background flame
condition. Refer to Step 3.
FIGURE 9.
Examples of Flame Detection Thresholds (Learning Target Flame Only)
Step 3 – Learn/ Store the Background Flame (optional, see note above)
Note: Use Step 1 instructions on page 14 to enter the pass code before Step 3 can be carried out.
Press the background flame select button (the Learn Background Flame LED illuminates) to
learn the selected background.
LED indication at this point:
Ready = Flashing
Flame On/Off LED = OFF
Flame Learn LED = OFF
Background Learn LED = ON
Note: The “Ready” LED flashes and the “Background Flame” LED is on steady during the learn
process until it has been completed.
READY FLAME
FLAME
STRENGTH
TARGET
= OFF
= ON
= FLASHING
100
90
80
70
60
50
40
30
20
10
0
25
90
25
%
O
F
A
V
E
R
A
G
E
A
M
P
L
IT
U
D
E
S
T
O
R
E
D
F
O
R
T
A
R
G
E
T
F
L
A
M
E
RELAY ON
RELAY OFF
TARGET
FLAME ON
BAND
