
- 23 -
ElEctronic control/ignition p.c.b.
8 .13 ignition and control sequence
figure 8 .28
lock memorised?
Ignition request
NO
Air pressure sensor
at work?
NO
beginning of wait period
presence of flame?
NO
YES
YES
Air pressure sensor
at work?
NO
YES
starts ignition discharges
opens gas valve
beginning of ignition period
flame presence?
end of ignition
period?
NO
NO
YES
closes gas valve
stops fan
interrupts ignition discharges
memorizes lock
turns on lock-out light
YES
reset push-button
pressed?
NO
YES
cancels lock
interrupts ignition discharges
gas valve open
flame presence?
Air pressure sensor
at work?
NO
YES
YES
closes gas valve
NO
YES
safety thermostat or flue
temperature probelock out?
NO
YES
Air pressure sensor
at rest?
NO
starts fan
YES
Содержание Riva Plus HE M296.24SR/C
Страница 2: ......
Страница 37: ...37 Short spare parts list 1 2 6 4 5 7 3 8 13 12 2 2 1 2 19 7 1 5 1 14 20 9 10 11 9 16 23 18 Figure 19 1...
Страница 38: ...38 NOTE...
Страница 39: ......