3313
8
GB
OPERATING PROGRAMME
NORMAL OPERATION
t
3
t
4i
t
s
t
4L
TL
M
I
V
SO
LED
LED
P
M
.
t
1
SO
t
2
KEY TO LAY-OUT
I
– Ignition transformer
LED
– Reset button LED indicating operating
status
M
– Fan motor
SO
– Ionisation probe
TL
– Limit thermostat
V
– Gas valve
t1
Standby time pending an input signal to control box:
reaction time, the control box stands still for the time
t1
.
t3I
Flame or flame simulation detected during pre-purging:
immediate lockout.
t1I
Flame or flame simulation detected before demand for
heat: the appliance stands still.
t3r
A recycle attempt is made in the event of a pressure
drop during pre-ventilation: in the case of a second air
pressure drop between the 16th and 29th second
another lockout follows; if there is a pressure drop
between the 30th second and 40th second , the appli-
ance immediately goes into lockout.
t2
Wait time after a request for heat:
the control box stays still for the
t2
time.
ts
Safety time:
if at the end of the
ts
time there is no flame, a lockout
follows.
t2a
Check whether the air pressure switch has already been
moved to the work position before the required heat:
the control box remains in standby status, a lockout fol-
lows if the air pressure switch remains switched for the
T2a
time.
t4a
Air pressure drop checking time during the
ts
time and
the normal operation:
the control box locks out immediately.
t2I
Flame or flame simulation detected before during
standby time:
lockout occurs if flame or flame simulation persists for
time
t2l
.
t4i
Transformer turn on time:
total ignition time.
t3
Pre-purging time:
start of the fan motor.
t4I
Flame loss in operation:
valve drop maximum reaction time, lockout occurs after
3 recycle attempts.
t3a
Time for checking the switching of the air pressure
switch in the operating position during the pre-purging
time:
if the pressure switch does not switch within
t3a
a lock-
out follows.
t6
Post-purging time:
additional purging time on the opening of the heat limit
thermostat (
TL
).
D7393
MV = still
Flame loss during operation (Recycle max 3 attempts)
Lockout
Red (LED lights)
Green (LED lights)
No signal needs to be received
Green
Re
d
OPERATING TIMES
(in seconds)
t1, t3l, t4l, t4a
t2l
t2
t2a
t3
t3a
t3r
ts, t4i
t6
max
max
-
-
-
max
max
-
max
1
30
3
120
40
15
70
5
360
Green
