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7.4 ADJUSTMENTS
If adjustments are required again, for example after ordinary main-
tenance you need to replace the gas valve or after converting from
natural gas to LPG or from LPG to natural gas, proceed as follows.
Maximum and minimum power, minimum and maximum
heating, must be adjusted in the indicated sequence and
only by qualified personnel from the Technical Assistance
Service.
- Turn off the general system power switch
- Remove the casing (fig. 15)
- Move forward and then upwards the lower part of the casing to
unhook it from the support plate
- Lift up the panel and then turn it forward
- Loosen the gas pressure check downstream from the gas valve
by about two turns and connect the pressure gauge to it
- Remove the protection cover of the adjustment screws, using a screw
- Disconnect the compensation pipe connection from the air chamber.
CALIBRATION & SERVICE operations must be performed with
the boiler on OFF position. To do this, press the
you see "ENERGY FOR LIFE" scrolling on display.
During the parameters adjustment operations, the
assumes the function of ENTER (confirm) and the
function of ESC (exit). If you don't confirm the setting within
10 seconds, the value is not memorized and the boiler returns
to the value previously set.
Setting the password
By holding down the key and then pressing the
3 seconds, you may access the parameters programming.
The display will show the word PROG and immediately after CODE.
Press ENTER key to confirm. Enter the password code for accessing
the parameters adjusting function by turning the selector to obtain the
value required. Confirm password by pressing ENTER. The password
for accessing the parameter programming function is located on the
back side of the control panel.
Calibration phases
By turning the selector the CALIBRATION & SERVICE phases scroll
one by one:
- 1
gas type (not change this parameter)
- 2
boiler power (parameter is not influential)
- 3
building insulation level (displayed only if an external probe is
connected)
- 10
DHW mode (not change this parameter)
- 23
maximum heating adjustment
- 24
minimum heating adjustment (not change this parameter)
- 45
thermoregulation curve slope (displayed only if an external
probe is connected)
- HH boiler at maximum power
- LL
boiler at minimum power
- HP max fan speed (not change this parameter)
- LP min fan speed (not change this parameter)
- SP start-up fan speed (not change this parameter)
GAS TYPE - 1
Adjust the set value as fallows:
- press ENTER to access the parameter value programming.
When you press ENTER the digits start flashing, pointing out the
value previously set
- turn the selector to select desired value (1 MTN - 2 LPG)
- confirm the new set value by pressing ENTER. The digits will stop
flashing.
ABSOLUTE MAX FAN SPEED - HP
Select the parameter HP by turning the encoder; push ENTER button,
it is possible to set the absolute max fan speed that is related to gas
type and boiler output. Modify this parameter only if strictly necessary.
The value is shown on the display as rpm/100 (i.e. 3600/100 = 36).
The set value automatically modifies the min value of parameter 23.
ABSOLUTE MIN FAN SPEED - LP
Select the parameter LP by turning the encoder; push ENTER button,
it is possible to set the absolute min fan speed that is related to gas
type and boiler output. Modify this parameter only if strictly necessary.
The value is shown on the display as rpm/100 (i.e. 3600/100 = 36).
The set value automatically modifies the min value of parameter 24.
START-UP FAN SPEED - SP
Select the parameter SP by turning the encoder; push ENTER button,
it is possible to set the start-up fan speed. Modify this parameter
only if strictly necessary.
The value is shown on the display as rpm/100 (i.e. 3600/100 = 36).
GAS VALVE MAXIMUM SETTING - HH
Select the HH parameter by turning the encoder; the boiler starts
at the maximum power, the CO
table below(for LPG see 9.2. If the CO
gas valve minimum setting (7.4.7). If the CO
the maximum gas pressure must be adjusted as follows: using a 2,5
mm Allen key, very slowly turn the maximum adjustment screw (see
fig. 41) – clockwise to decrease, counter clockwise to increase – until
the correct value is displayed on the CO
the analyser to stabilise).
GAS VALVE MINIMUM SETTING - LL
Select the LL parameter by turning the encoder. The boiler starts at
the minimum power, the CO
above. If the CO
(7.4.8). If the CO
key until
must be adjusted as follows: using a 4mm Allen key, very slowly turn
the minimum adjustment screw (see fig. 41) – clockwise to increase,
counter clockwise to decrease - until the correct value is displayed
key
on the CO
key the
2
RANGE RATED MAXIMUM OUTPUT CH (FAN SPEED) - 23
Select the parameter 23 by turning the encoder. Push ENTER but-
ton and modify the maximum fan speed as indicated in the range
rated table by turning the encoder. Push ENTER button to store the
key for about
value. The values just setted must be recorded on the last page of
this manual.
MINIMUM OUTPUT CH (FAN SPEED) - 24
Select the parameter 24 by turning the encoder. Push ENTER but-
ton, it is possible to modify the minimum fan speed by turning the
encoder. Push ENTER button to store the value.
Exit the CALIBRATION & SERVICE functions by pressing ESCAPE.
The boiler will go back to off mode, ENERGY FOR LIFE scrolling
on display.
- Reconnect the compensation pipe connection to the air chamber
- Disconnect the pressure gauge and screw back the gas pressure
check screw.
To resume operation, press the
After adjusting the gas valve, always seal it with sealing wax.
Note An existing boiler with a measured CO/CO
or less can be deemed as operating satisfactorily, with a measured
CO/CO
ratio of greater than 0.004/1 can be deemed as at risk, with
2
a measured CO/CO
as immediately dangerous.
MAX NR FAN SPEED CH
LINEA ONE
MAX NR FAN SPEED DHW
LINEA ONE
MIN NR FAN SPEED
LINEA ONE
CO
LINEA ONE
CO
LINEA ONE
7.5 COMBUSTION ANALYSIS TEST
A combustion analysis check can easily be carried out on the appli-
ance via the test points located on the top of the appliance, however
you must check that the CO
- Insert the flue gas analyser probe into the flue gas test point (see fig. 36).
- Operate the boiler in HH - LL and compare the values with those shown
in 7.4.6. If different adjust the gas valve according to 7.4.6. and 7.4.7.
Note: When checking the air inlet test point, insert the probe no
more than 25mm into the test point.
reading should be as shown in the
2
reading should be as shown in the table
2
reading is correct, pass to gas valve final setting
2
reading is incorrect, the minimum gas pressure
2
analyser (allow time for the analyser to stabilise).
key.
ratio of greater than 0.008/1 can be deemed
2
(G20)
50
(G20)
62
(G20)
12
max
(G 20)
2
9,0
(G 20)
min
2
9,5
values are set correctly (see 7.4).
2
reading is correct, pass to
2
reading is incorrect,
2
analyser (allow time for
2
ratio of 0.004/1
2
(G31)
49
rpm
(G31)
62
rpm
(G31)
18
rpm
(G 31)
10,0
%
(G 31)
10,0
%
27
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