35
speed from phase 11 (transfer to boiler control unit)
Phase Temperature controller
Fan ignition setting
100%
Fan relay
Air pressure limiter
Safety valve
Y1
Ignition/ solenoid valve/ servomotor Flame signal
Gas pressure limiter
Choke valve (option)
Y2
Safety temperature limiter
Input
Output
Output
Input
Output
Output
Output
Input
Input
01
Fault
= ON
= OFF
= ON or OFF
02
03
04
05
06
07
08
09
10
11
12
13
17
18
20
01
19
21
= ON if speed is min.
Input
Burner control unit flow chart
Burner control unit flow chart
5692 488 GB