- 20 -
ElEctronic control/ignition p.c.b.
figure 8 .16
1 flash
M296.24SR/C
M296.28SR/C
4 flashes
b
10 Turn the water control to minimum. Lock-out lamp blinks (2
per second) indicating the setting has changed
11 To change the setting turn the knob B on a position corre-
sponding to the boiler model (Figure 8.16).
12 To memorize the setting keep pressed the reset button D for
about 5 seconds until the lights F
briefly blinks simultane
-
ously. At this point only the right green light flashes.
13 To reset the boiler to the normal operation turn it OFF and ON
by the function selector knob A.
8 .8 reignition frequency setting
It is possible to select the minimum time that must pass between
two ignitions of the burner in c.h. function mode.
1 Turn the boiler ON positioning the function selector knob A as
indicated in Figure 8.17.
figure 8 .17
f
b
a
d
e
2 Keep pressed the reset button D for about 10 seconds until
the lock-out signal lamp E blinks.
3 The lamps F should give the indication as in Figure 8.18 (re-
ignition frequency). If not, press the reset button repeatedly
to obtain it.
figure 8 .18
Where:
Lamp OFF
Lamp ON
At this step it is possible to visualize the current setting by keep-
ing the reset button D pressed for more than 5 seconds. The
lamps F
will flash a number of times corresponding to the setting
(Figure 8.19).
4 To change the setting turn the knob B on a position corre-
sponding to the desired delay.
By turning the knob B, the lock-out signal lamp E blinks quick-
ly (2 per seconds) indicating that the setting has changed and
must be memorised.
figure 8 .19
Setting No.
Delay (minutes)
1
4
2
3
5
6
7
0
1 1/2
3
4
5 1/2
7
8 1/2
b
5 To memorize the setting keep pressed the reset button D for
about 5 seconds until the lights F
briefly blinks simultane
-
ously.
6 To reset the boiler to the normal operation turn it OFF and
ON by the function selector knob A. In any case, the boiler
automatically resets to its normal operation after 10 minutes.
Factory setting = 3 minutes
8 .9 ignition gas pressure adjustment
1 Turn the boiler OFF.
2 Remove the front panel of the case.
3 Open the gas valve outlet pressure test point (7, see section
9.2) and connect the gauge.
4 Turn the boiler ON positioning the function selector knob A as
indicated in Figure 8.20 (M296.24SR/C, M296.28SR/C) and
ensure that the timer selector switch and room thermostat, if
fitted, are set to “heat demand”.
Run the boiler in c.h. mode.
figure 8 .20
f
b
a
d
e
5 Keep pressed the reset button D for about 10 seconds until
the lock-out signal lamp E blinks.
6 The lamps F should give the indication as in Figure 8.21. If
not, press the reset button repeatedly to obtain it.
figure 8 .21
Where:
Lamp OFF
Lamp ON
7 Keep pressed the reset button D for about 5 seconds until the
lock-out signal lamp E is switched OFF.
The boiler runs in c.h. mode and the lamps F give the indica-
tion as in Figure 8.22.