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Fig. 7.11 (coefficient K setting). If not, press
the reset button repeatedly to obtain it.
Where:
Fig. 7.11
• To change the setting turn the knob 9 on
a position corresponding to the desired
coefficient K. By turning the knob 9, the
lock-out signal lamp 6 blinks quickly (2 per
seconds) indicating that the setting has
changed and must be memorised.
1,5
1
0,5
0
9
Fig. 7.12
• To memorize the setting keep pressed the
reset button 7 for about 5 seconds until the
lights 10 briefly blinks simultaneously.
• To reset the boiler to the normal operation
turn it OFF and ON by the function selec-
tor knob 8. In any case, the boiler automat-
ically resets to its normal operation after
10 minutes.
After setting the coefficient K, position the
knob 8 as shown in Fig. 7.13 in order to ob-
tain the c.h. flow temperature accordingly
with the chart of Fig. 7.9.
- 50 -
COMMISSIONING
Lamp OFF
Lamp ON
2
3
4
5
6
Coeff. K
Setting No.
8
Fig. 7.13
However, the setting point of the c.h. flow
temperature can be manually increased or
decreased within a range of ±15 °C by turn-
ing the knob 8.
The effect of the knob 8 for a coefficient K
set to 1,5 is illustrated in Fig. 7.14.
C.h. flow temperature °C
80
+ 15 °C
70
60
50
K=1,5
40
30
--- 15 °C
20
20
15
10
5
0
Fig. 7.14
7.11 Checking the ignition device
With the burner on high flame close the gas
cock.
After three ignition attempts (within about
three minutes), the lock-out signal lamp 6on
page 8 must appear.
To reset the boiler press and release the
boiler reset button 7on page 8.
--- 5 --- 10 --- 15 --- 20 --- 25
External temperature °C
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