25
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 check 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 switch 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 ...
In the case of fault shutdown:
35 Gas shortage: Gas pressure switch min. 0 ...
36 On hold program 0 ...
Flow diagram
Flow diagram
(cont.)
5782 991 GB
Service
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