Operating Programme (Two-Stage Version Without Heater) - Riello MO550-BWG Installation, Use And Maintenance Instructions

3.6

Operating programme (two-stage version without heater)

Normal operation
POWER SUPPLY
t
2
P
H T
t
1
F M
M
I D
V 1
P
T R
V 2
F
L E D
F
L E D
Signal not requested
Lockout due to ignition failure
POWER SUPPLY
t
2
P
H T
t
1
F M
M
I D
V 1
P
T R
V 2
F
L E D
20135335
20138365
Electrical data and operating times
t
3
t t
t
3 i
s
5 i
t
4 i
t
5
Green blink
Blink
Green
orange
No flame during operation
Green blink
Blink
Green
orange
t
3
t
t
t
3 i s
5 i
t
4 i
Lockout
t
5
Green blink
Blink
orange Red
Lockout due to extraneous light during pre-purging
20135393
POWER SUPPLY
P
H T
F M
M
I D
V 1
P
T R
V 2
F
L E D
t
4 l
Lockout
Key
– Flame sensor
F
FM – Fan motor
HT – Heat request
– Ignition device
ID
Fig. 9
LED – LED colour inside the button
TR – Adjustment thermostat
– Standby time
t1
– Initialisation time for checking
t2
– Pre-purging time
t3
– Checks for presence of extraneous light during pre-purg-
t3l
ing phase
– Total ignition time
t4i
– Reaction time to achieve safety lockout due to lack of fail-
t4l
ure
– Safety time
ts
– 1st stage valve
V1
– Valve 2nd stage
V2
Fig. 10
8
GB
t
2
t
1
t l
3
Blink
Red, green blink
orange
20135332
t
s
Lockout
Blink
red
Fig. 11