1
Compact Condens : A1003043 - 664Y7200 • A
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29
STARTING UP
STARTING UP THE BOILER
Set-up conditions
•
All connections made
•
Condensate trap full of water
•
Electrical power supply on
•
Gas supply open
•
Hydraulic circuit full of water
Procedure
1.
Check that there is no gas leak.
2.
Set the ON/OFF master switch on the “ I “ position.
3.
If a room thermostat is installed, possibly increase the temperature set-point to generate a demand.
4.
Check that the gas pressure, siphon pressure and water pressure contacts are closed. If not, the
boiler will block and display the E76 error code.
5.
Check the gas pressure and allow the boiler to heat up for a few minutes.
6.
Check there is no leak at flue-gas joints.
7.
Check and adjust the burner according to local standards and regulations, refer to “Checking and
Adjusting the Burner” on page 29.
8.
Set the central heating temperature to the required value using the control panel. Refer to “Install-
er’s menu and parameter descriptions” on page 12.
9.
After 5 minutes of operation, bleed the heating circuit until all air is evacuated and restore a 1.5 bar
pressure.
10. Bleed the central heating circuit once again and top it up with water to get the required pressure,
if necessary.
11. Make sure that the central heating system is properly balanced and, if needed, adjust the valves to
prevent certain circuits or radiators from getting a flow rate that is far above or below the set rate.
Follow-on tasks
1.
Check that there are no leaks.
2.
Check that the flow rate in the appliance is sufficient as follows :
•
Operate the boiler at maximum power
•
Once the temperatures are stable, read out the supply and return temperatures
•
Check that the difference between the supply and return temperature is equal or lower than
20k.
•
If the Delta T is higher than 20k, check the pump settings/specifications.
CHECKING AND ADJUSTING THE BURNER
When the burner operates at full power, the CO
2
rate must be within the limits mentioned in
the technical characteristics, (see “Combustion Characteristics” on page 17).
Set-up conditions
•
Operating boiler
Procedure
1.
Check if the MAXSYS parameters are set to meet the user's requirements (refer to “Installer’s menu
and parameter descriptions” on page 12), and change them if required.
2.
Put the boiler to maximum power mode (refer to “Installer’s menu and parameter descriptions” on
page 12, chimney sweeper function).
The boiler is equipped with an automatic gas/air regulator. This means that the amount of
gas is regulated according to the amount of air.
3.
Using a pressure tester, check that the dynamic gas pressure at the gas valve is at least 18 mbar.
4.
Allow the appliance to heat for a few minutes until its temperature is stable.
5.
Measure the burner combustion by placing the flue gas analyser probe into the measurement unit
port on the flue pipe and compare the CO and CO
2
values displayed with those indicated in the
combustion characteristics table. Refer to “Combustion Characteristics” on page 17.
6. If the CO
2
value differs by more than +0.2% / -0.05 from the value mentioned in the “Combustion
Characteristics” on page 17, carry out the adjustment as follows :
•
Turn the throttle to the right to lower the CO
2
percentage (a ½ turn (180°) gives a change of
approximately 0,2 % CO2)
7.
Then put the boiler to the minimum power mode (Refer to “Installer’s menu and parameter descrip-
tions” on page 12).
8.
Allow the boiler to stabilize for a few minutes.
9.
Measure the CO
2
level. It must be lower than the value at full
power, with a maximum of 0.5%. In case of significant devia-
tion, please contact ACV's Maintenance department.
Follow-on tasks
10. Fill in the service log with the required initial values, in order
to be able to compare the boiler changes over time. Refer to
“Service log” on page 39.
