23
Regulation info
2.8 - ADAPTING THERMAL
POWER TO THE HEA-
TING SYSTEM
fig. 28
fig. 29
GAS PRESSURE BURNER DIAGRAM CORRESPONDING TO
THE SYSTEMS OUTPUT
With the heating system cold.
Connect the pressure gauge to the burner as
shown in fig. 28, switch on the boiler in he-
ating mode and proceed as follows.
-
Wait about two minutes to allow the pres-
sure to reach the operating value.
-
Read the pressure measured and check that
the thermal power generated by the boiler
suits the installation requirements.
-
If necessary –
but this is not compulsory
–
you can regulate the potentiometer
P1
on
the modulation board to adjust the thermal
power to the heating system. Turn the po-
tentiometer
clockwise
(seen from the front)
to increase the pressure or
anticlockwise
to decrease it.
Note
Since the boiler is the modulating type, it
automatically adapts the thermal power to
the features of the heating system. By ope-
rating potentiometer
P1
you effectively li-
mit the maximum power of the boiler and
hence its pickup capacity.
Using the pressure/thermal power graph
(fig. 29)
Assuming that the heating system has a
total absorption of 18 kW, using the graph
in figure 29 you can determine the maxi-
mum pressure at which the burner can be
set.
Example 1
If the boiler runs on methane gas, adjust
the potentiometer
P1
to set the pressure to
8 mbar for version 24 TN and to 8.2 mbar
for version 24 TFS.
Example 2
If the boiler runs on butane gas, adjust the
potentiometer
P1
to set the pressure to 14.8
mbar for version 24 TN and to 15.2 mbar
for version 28 TFS.
Example 3
If the boiler runs on propane gas, adjust the
potentiometer
P1
to set the pressure to 19
mbar for version 24 TN and to 20 mbar for
version 28 TFS.
0
0
5
10
15
25
20
30
1
Natural Gas (mbar)
O
u
tput
k
W
Butan Gas (mbar)
Propan Gas (mbar)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IVEN B 60 TN
IVEN B60 TFS
