Operating Programme; Normal Operation - Riello RX25 S/PV H Installation, Use And Maintenance Instructions

6.9

Operating programme

6.9.1

Normal operation

P
TL
tw t1
M
M
I
V
SO
Flame loss during the operation
and lockout due to ignition failure
SO
LED
Operating times
ta tf
20 1
Time expressed in seconds
Time for checking motor turns:
if the number of turns is lower than 900 rpm, after ta will
ta
be carried out a lockout.
Response time after the flame disappearance.
tf
Flame or flame simulation detected during pre-purging:
tl
immediate lockout.
Stabilisation time:
tm
the modulation occurs after this time.
Safety time:
if at the end of the time ts a flame is not present, tpp is
ts
carried out. After 3 times follows a lockout.
20030020
tm
t2 t3
ts
Lockout
.
tf
D10632
tl tm
40 10
Operation
Key
– Ignition transformer
I
LED – Reset button LED indicating operating status
– Fan motor
M
– Ionisation probe
SO
– Limit thermostat
TL
– Gas valve
V
Red (LED signalling)
No signal needs to be received
ts tw t1
5 - 40
Stabilisation time motor turns.
tw
Pre-purging time:
t1
by the signal of heat request to the end of the ignition.
Transformer pre-ignition time:
t2
ignition before the valve closing.
Transformer ignition time:
t3
the transformer remains on during the safety time.
Post-purging time:
Additional purging when the heat request is completed,
t8
or in case of flame failure during the operation or in
case of ignition failure.
16
GB
Fig. 14
t2 t3 t8
3 5 10