Operation Programme; Normal Operation - Riello RX 70 S/PV Installation, Use And Maintenance Instructions

4.6 OPERATING PROGRAMME

4.6.1 NORMAL OPERATION

P
TL
t
2
t
1
M
M
t
3a
I
V
SO
LED
Flame loss during operation (Recycle max 3 attempts)
MV = still
SO
LED
OPERATING TIMES
t1 t1I t2
max max
-
1 30 3
Time expressed in seconds
Standby time pending an input signal to control box:
t1
reaction time, the control box stands still for the time t1.
Flame or flame simulation detected before demand for
heat:
t1I
if the presence of light lasts for the t1l time, a lockout fol-
lows.
Standby time after a request for heat:
t2
the control box stays still for the t2 time.
Flame or flame simulation detected during standby time:
t2I lockout occurs if flame or flame simulation persists for
time t2l.
Pre-purging time:
t3
start of the fan motor.
Purging check at maximum rpm from 12th to 20th sec-
t3a
ond of pre-purging.
Purging check at START rpm from 35th to 40th second
t3b
of pre-purging.
3350
t
3
t t
3b 4i
t
s
Green
Green
t2l t3 t3a
max
- -
30 40 8
KEY TO LAY-OUT
I – Ignition transformer
LED – Reset button LED indicating operating
M – Fan motor
SO – Ionisation probe
TL – Limit thermostat
V – Gas valve
t
4L
.
Lockout
D7252
t3b t3l ts
max
- -
5 1 3
Flame or flame simulation detected during pre-purging:
t3I
immediate lockout.
Safety time:
if no flame is detected by the end of time ts the cycle
ts
(start-up) is repeated and lockout occurs after 3
attempts to restart.
Transformer ignition time:
t4i
total ignition time.
Flame loss in operation:
t4I valve drop maximum reaction time, lockout occurs after
3 recycle attempts.
Post-purging time:
t6 additional purging time on the opening of the heat limit
thermostat (TL).
Flame or flame simulation detected during post-purging:
t6I lockout occurs if flame or flame simulation persists for
time t6l.
12 GB
status
Red (LED lights)
Green (LED lights)
No signal needs to be received
Purging motor at max. rpm
Purging motor at START rpm
(t3b)
t4i t4l t6
max max
-
3 1 360
t6l
max
30