PFU 780 · Edition 02.12
26
4 .3 .1 Permanent pilot burner
Parameter 16 = 1
Operating mode: Permanent pilot burner
In the “Permanent pilot burner” operating mode, the pilot
burner remains in operation until its start-up signal drops.
If this parameter is activated (P16 = 1), both flames are con-
trolled independently in the case of pilot and main burner
monitoring.
Operating mode: Intermittent pilot burner
Start-up as in the illustration “Permanent pilot burner” with
the difference being that the start-up signal for pilot and main
burners is applied synchronously and that immediately after
the flame proving period t
FS1
, the main burner is started.
Parameters > Pilot and main burner monitoring
t
SA1
t
Z
04
06
07
08
02
03
00
t
t
FS1
t
SA2
t
FS2
26a
16c
18e
2c–4c
18a
14a
88
10e
26e
30a
28c
2e–4e
6a–6e
V1
1
V2
2
ϑ
1
ϑ
2
2
1
PFU 780
A
P
L1
1
2
SPS
PLC
CPE
ϑ
VR..R
VAG
VBY
TZI
2
1