8.9.2
Lockout due to ignition failure
P
T L
t
1
t
2
MV
M
I
V1
V2
F
Green
L ED
8.9.3
Lockout due to extraneous light during pre-
purging
P
TL
t
1
t
2
MV
M
I
V1
V2
F
Green
LED
t
3
t
4i
t
t
t
3i
s
5i
Green+Yellow
Red
t
3
t
s
t
3l
.
Lockout
Red+Yellow
Operation
Key (Fig. 24 - Fig. 25)
- Flame detector
F
I
- Ignition transformer
LED - Reset button LED indicating operating status
MV - Fan motor
TL
- Limit thermostat
- Oil valve 1st stage
V1
- Oil valve 2nd stage
V2
D7888
Operating times
D9637
max
t1
max
t1I
Fig. 24
-
t2
t2I
max
t3
-
-
t3i
max
t3I
-
ts
Time is expressed in seconds.
D7879
Fig. 25
23
GB
Red
Green + Yellow slow blinking
Green + Yellow fast blinking
Green
Green + Yellow medium blinking
Red + Yellow fast blinking
1
t4i
30
t5
3
t5i
30
t4I
15
t6
5
t6I
1
t7
5
-
13
-
35
-
3
max
1
max
360
max
30
-
120
20015403