115
Gas
Edition 10-2008a
Sequence of events of Steam / Hot Air Burner (SCC as well as CM)
If no flame detected => new ignition sequence. After 5
th
ignition without success => RESET
16
24
19
20
17
18
10
11
14
15
Speed of burner blower motor in U/min
21
22
23
26
27
6789
01
45
8
4
3
2
1
25
12
13
F l a m e c u r
r e n t in μ
A
Time
2
3
7
6
5
Flame monitoring
Energise Solenoids: Black coils ca 205V DC / orange coils ca 108V DC
Ignition box gets heat demand over the BUS cable
Ignition, ca 20KV
Burner blower motor
Gas valve
Heat demand
Start
-
pre purge
about. 4-5 sec
Pre purge, 4 sec
RPM monitored
Blower runs with
St
art RPM
RPM monitoring by ignition box
Blower runs with
Ma
x or
Min
RPM
RPM monitoring by ignition box
Flame monitoring within. 2 sec
C
continuous flame control
Start
RPM
Max
RPM
Min
RPM
sec
RPM
Ign
it
ion,
5
sec
Pre ignition, 1sec
Start up
Pre purge
Pre i
gniti
on
Ignition
Burner running
Flame
cont
rol
μA
Flame current
Sequence of events of Burner and Ignition control
Содержание SCC Series
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