Ariston EGIS PREMIUM S 25, Installation And Servicing Instructions

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40
commissioning
Combustion checking procedure
The order of operations for this procedure must always be respected.
Operazione 1 - Supply pressure check
Loosen the screw
1
and insert the pressure gauge connection pipe
into the pipe tap.
Switch the boiler on at maximum power, enabling the “Cleaning
function” (press the button for 5 seconds; the display will show “
“).
The supply pressure should correspond to the value established in
relation to the type of gas ,for which the boiler is designed see Table
summarising changes.
Operation 2 - Preparing the measuring equipment
Connect the calibrated measuring device to the left-hand combustion
outlet by unscrewing the screw and removing the blanking cover.
Operation 3 - Adjusting the CO2 at maximum gas fl ow rate
(domestic hot water)
Draw o ff the domestic hot water at the maximum water fl ow rate.
Select the Cleaning function by pressing the
RESET button for 10 seconds.
WARNING! When the cleaning function is activated, the
temperature of the water coming out of the boiler may be more
than 65°C.
The following icon appears on the display:
(gas boiler activated at the C.H.
maximum power)
Press the button 1 to elect the icon:
(D.H.W. maximum power)
Wait 1 minute for the boiler to stabilise
before carrying out the combustion
analyses.
Read the CO2 value (%) and compare it with the values given in the
table below
N.B.: values with the casing closed.
If the CO2 value (%) read di ff ers from the values given in the table,
then adjust the gas valve following the instructions below, otherwise
move directly onto operation 4.
Adjusting the gas valve at D.H.W. maximum gas fl ow
Adjust the gas valve by turning setting screw
4
clockwise in increments to
reduce the CO2 level (a 1/4 turn adjusts the CO2 level by approximately
0.2%).
Wait 1 minute after each
change in setting for the CO2
value to stabilise.
Once the CO2 value (%) is
close to the values given in the
setting table, close the casing
cover and measure the fi nal
CO2 value after waiting one
minute.
If the value measured
corresponds to the value given
in the table, adjustment is
complete, otherwise start the setting procedure again.
N.B. The cleaning function is automatically deactivated after 10 minutes
or manually by brie fl y pressing the RESET button.
13
24
2
4
1
EGI S P R EMIUM S
2 5 3 1
Gas C O2
(%)
G20 9,0 ± 0,7
G31 10,0 ± 0,7