6
Mareli Systems
The joint operation of the system which the automated pellet burner applies to / depends on:
•
Heat output to which the burner is set;
•
The heating surfaces of the heater, for which it is intended.
•
The seal degree of the door and covers of the combustion chamber (condition of sealing ropes);
•
Chimney draught;
Good chimney draught is essential for proper functioning of the heating system. Boiler capacity and eco-
nomical operation depend largely on it. The heater can only be connected to a chimney with a good draught.
Attention: Suffocation hazard due to lack of oxygen in the installation room.
•
Ensure sufficient fresh air supply through holes out.
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Risk of injury/damage to equipment due to lack of combustion air can lead to tar and noxious gas for-
mation.
•
Ensure sufficient fresh air supply through holes out.
•
Notify the user of the installation that these holes must remain open.
NOTES:
When using the circulation pump for the transmission of heat energy from the hot water boiler to the heating
system,d it is not recommended that the return („cold “) water’s temperature is lower than 60oC. A local (in
the heat exchanger of the boiler) over-cooling of flue gases and condensing water vapour is possible, which is
one of the end products of fuel combustion.
Continued operation of the burner is not recommended when the heat rating is less than 50%, since such
operating modes are not efficient and not cost effective, unless the combustion process is not set up exactly in
such operating mode.
EXPLANATION
: If the boiler has to operate in a heat power mode which is lower than 50%, it is recom-
mended that a heat accumulator is installed to the heating system which to ensure a reliable, economical, and
efficient operation of the boiler-burner system in the installation.
Why is regular maintenance important?
Heating systems should be maintained on a regular basis for the following reasons:
•
To maintain high efficiency and to operate the heating system economically (with low fuel consumption);
•
Achieving high safety of operation;
•
Achieving high environment-friendly combustion;
5. Pellet burner cleaning
The appliance must be cleaned regularly for long and good operation of the pellet burner. Cleaning is done
when the burner is stopped and switched off from the mains. The more qualitative the pellets used are, the
longer the intervals between cleaning will be.
The main elements in the burner to be cleaned are the grate and the photo sensor.
It is mandatory daily cleaning of the basin. Cleaning takes about 5 minutes.
Cleaning sequence:
1. Turn off the burner.
2. Wait for the fan to blow out and cool down the burner. The
display will show OFF.
3. Switch to OFF the power supply button.
4. Open the boiler door.
5. Using gloves or pliers (temperature is still high), remove the
grate and clean it.
6. Place the grate back into the burner.
7. Make sure the basin stops are in position. Improper installa-
tion will result in auto-shut off of the burner thereafter.
8. Switch to ON the power supply button.
9. Start the burner.
Clean the photo sensor once per every 2 months or more often if necessary. Simply open the top cover of the
burner by unscrewing the fixing screws. The photo sensor is located in the upper left corner. Remove the fixing
screw and clean with a dry soft cloth. Check the fan, and clean it if necessary.
Do not use any cleaning agents.!
Boiler:
Clean the ashes from the boiler with a brush and remove the soot.
Pellet hopper:
Clean the pellet hopper periodically. When using lower quality pellets, they generate ash, which
accumulates on the hopper base and impedes the passage of the pellets.
