Aritherm BioComp 120 kW, Installation, Operation And Maintanance

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17
COMMISSIONING
Before starting up the heating system the following must be checked:
• the heating network and the boiler are full of water, pressure at least 0,5 bar
• the damper plate is open, if applicable
• the circulation pump is in operation
• the network valves are open
• the combustion air opening is open
• the safety valve has an unobstructed connection to the boiler and is in working order
Start the burner and test its operation as instructed in the burner manual. Make sure that the
circulation is working and remove the air that has accumulated in it.
Adjust the flue gas fan power so that the under pressure in the fire chamber is about 10-30
Pa whilst the burner is in operation (check the recommended under pressure from the burner
manual). The operating intervals for the ash screw and the automatic convection part cleaning
can be adjusted from the Arimatic control centre. Detailed instructions can be found from the
control centre user manual.
Daily use and maintenance
The daily use of the boiler is dependent on the chosen fuel and the heating requirements.
Arimatic control centres control the burning automatically. A prerequisite for a well-operating
system is correctly adjusted burning equipment and a sufficient underpressure in the fire
chamber.
WARNING: When changing fuel quality, always readjust the system! If necessary, check the
suitability of the fuel from the equipment supplier!
NOTE! When field biomass or corresponding fuel with higher risk of corrosion is used it
is important to ensure that the boiler water temperature is kept high enough to avoid
condensation. The return water temperature must not fall below 70 °C. Furthermore, regular
checks that no condensation occurs on the fire and convection surfaces must be performed.
It is therefore good to acknowledge that the fuel type has an effect on the boiler’s lifetime.
NOTE! The maintenance interval of the system depends greatly on the chosen fuel and the
correct adjustments of the burner. On the average, the boiler needs to be cleaned every 2-4
weeks.