20135737
24
Installation
5.12 Operating programme
Key
AD – Electric air damper opener
FM –Fan motor
HT – Heat request
ID – Ignition device
LED – LED colour inside the button
PG – Low gas pressure switch
SO – Ionisation probe
TR – Adjustment thermostat
t1 – Standby time
t2 – Initialisation time for checking
t3 – Pre-purging time
t3l – Checks for presence of extraneous light during pre-purg-
ing phase
t4i – Total ignition time
t4l – Reaction time to achieve safety lockout due to lack of fail-
ure
t5 – Delay time between the 1st and 2nd stage
ts – Safety time
V1 – 1st stage valve
V2 – Valve 2nd stage
t
2
t
1
t
3
t
4i
t
s
HT
FM
ID
V1
LED
P
M
LED
t
4l
PG
P
TR
P
M
~
AD
t
5
V2
SO
SO
POWER SUPPLY
Signal not requested
Green blink
Lockout
Green
No flame during operation
20134902
Green blink
Green
Fast red
blink
Fig. 19
Normal operation
Orange
blink
Orange
blink
t
2
t
1
t
3
t
4i
t
s
HT
FM
ID
V1
LED
P
M
PG
P
TR
P
M
~
AD
V2
SO
Lockout
Green blink
Lockout due
20134901
POWER SUPPLY
Fig. 20
Red
Orange
blink
LED
t
2
t
1
HT
FM
ID
V1
P
M
t
3
l
PG
t
s
P
TR
P
M
~
AD
V2
SO
Orange
blink
Red, green blink
Lockout
Red
Lockout due to extraneous light during pre-purging
20134900
POWER SUPPLY
Fig. 21