52
After the controller issues a heat
demand, the following program
sequence will be run:
Phase
Duration
00
Fault
0 ...
01
Waiting for heat demand
0 ...
03
Fan idle state
max. 2 min
04
Air pressure switch idle state check
max. 5 s
06
Fan ramp-up
max. 2 min
07
Waiting for air pressure
max. 5 s
08
VPS decision: Valve tightness check
0.1 s
09
VPS: Clear intermediate valve space
1 to 3 s
10
VPS test time: Valve 1
1 to 240 s
11
VPS: Fill intermediate valve space
1 to 3 s
12
VPS detection: Gas pressure
0.1 s
13
VPS test time: Valve 2
1 to 240 s
14
Pre-purge time
0 to 1 h
16
Ignition setting
max. 2 min
17
Gas detection: Gas pressure limiter min.
0 ...
18
Pre-ignition time
0 to 1 min
19
Ignition safety time (SZA)
0.5 to 9.4 s
20
SZA flame recognition
0.5 s
21
Flame stabilising time
1 to 200 s
23
Changing to control mode
max. 2 min
24
Control mode
0 ...
25
Changing to controlled shutdown
1 to 30 s
32
Burner run-on time
1 to 60 s
33
Post-purge time
0 to 1 h
34
Restart blocking time
0 to 1 h
01
Waiting for heat demand
0 ...
For fault shutdown:
35
Gas shortage: Gas pressure limiter min.
0 ...
36
Maintenance program
0 ...
Burner control unit flow diagram
Burner control unit flow diagram
(cont.)
5692 908 GB