19
20011755
GB
Operation
8.8
Operation programme
8.8.1
Normal operation with preheating
Key to lay-out
F
– Flame detector
I
– Ignition transformer
K
– Enabling switch thermostat for start up after preheating
LED
– Signal of operation status from reset button
MV
– Fan motor
PH
– Diesel oil heater
TL
– Limit thermostat
V1
– Oil valve
Operating times
The time is expressed in seconds
D7230
Signal not required
Yellow
Green
Yellow
Green
Yellow
MV = still
Flame loss during operation (Recycle max 3 attempts)
Yellow
Green
Yellow Yellow
Red
Block
Fig. 20
t1
max
1
ts
-
5
t1I
max
30
t4i
-
8
t2
-
3
t5i
-
3
t2I
max
30
t4I
max
1
t2p
max
600
t6
max
360
t3
-
15
t6I
max
30
t3I
max
1
t7
-
120
Red
Green + Yellow slow blinking
Green + Yellow fast blinking
Yellow
Green
Green + Yellow medium blinking
Red + Yellow fast blinking
Yellow fast blinking
t1
Waiting time of a control box input signal: reaction time,
the control box stands still for the time
t1
.
ts
Safety time:
if at the end of the
ts
time there is no flame, a block fol-
lows.
t1I
Presence of extraneous light before the heat request: if
the presence of light during the
t1l
time, a block follows.
t4i
Transformer turn on time
total turn on time
ts
+
t5i
.
t2
Wait time after a request for heat:
the control box stays still for the
t2
time.
t5i
Transformer post- turn on time:
additional turn on time after
ts
.
t2I
Presence of extraneous light during the oil preheating:
if the presence of light lasts the
t2l
time, a block follows.
t4I
Flame loss in operation:
maximum oil valve drop reaction time, after three recycle
attempts a block follows.
t2p
Maximum preheating time: if the thermostat
K
does not
make the switch within the time
t2p
a block follows, the
control box remains still for the time
t2p
.
t6
Post-purging time:
additional purging time on the opening of the heat limit
thermostat (
TL
).
t3
Pre-purging time
start of the fan motor.
t6I
Presence of an extraneous light during post-purging. if
the presence of light lasts the
t6l
time, a block follows.
t3I
Presence of a n extraneous light during pre-purging.
immediate block.
t7
Long pre-purging time
pre-purging time more than
t3
.
