Electronic control/ignition p.c.b.
24
9.11
Thermal control in the ”
” mode
lock memorised?
NO
Switch in the
function mode
Taking
water from the domestic hot
water circuit?
YES
circulator off
fan still
circulator on
Is primary circuit
temperature higher than that
selected?
YES
Main circuit pressure
switch consense?
NO
YES
NO
NO
starts fan
checks fan rpm
YES
cancels lock
Is fan rpm
exact?
NO
YES
Is flue
temperature higher than 110
˚
C?
YES
NO
beginning of wait period
flame presence?
End of wait
period?
YES
NO
YES
starts ignition discharges
Opens gas valve
beginning of ignition period
flame presence?
YES
interrupts ignition discharges
gas valve open
fan runs
End of ignition
period?
NO
NO
YES
closes gas valve
stops fan
interrupts ignition discharges
memorizes lock
turns on lock---out light
reset push---button
pressed?
flame presence?
NO
NO
Is fan rpm
exact?
YES
NO
safety thermostat or flue
temperature probe lock out?
YES
NO
YES
YES
stop circulator (3min)
Operation lights
Operation lights
turns on lock---out light
Opeartion lights
YES
Fig. 9.20
Содержание RIVA ADVANCE HE M110B.24SM/C
Страница 49: ...Short spare parts list 47 P5 1 5 3 4 2 6 9 7 14 16 20 19 21 8 11 15 17 10 12 13 18 ...
Страница 50: ......
Страница 51: ......