38
Phase
Safety chain (option)
Alarm (option)
Control thermostat
Aux. valve / servomotor
Safety valve 1
Safety valve 2
Fan relay PWM (fan)
Flame signal
Air pressure limiter Gas pressure limiter
min.
Ignition
Parameters Leak detection
Gas pressure limiter leak detection
Input
Output
Input
Output
Output
Input
Input
Input
Input
Input
Output
Output
Output
Output
10
11
12
13
14
16
17
18
19
20
21
23
24
25
32
33
34
1
35
36
0
1
3
4
6
7
8
9
Output
Input
Output same or steady
Input same or steady
Fig. 49
After the controller issues a heat demand, the following
program sequence runs:
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
Burner control unit flow chart
Burner control unit flow chart
5783 337 GB
Diagnosis
Содержание CT3U
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