Lignum NG
18
8
BOILER MAINTENANCE AND CLEANING
8.1
Cleaning the boiler
8.1.1
Ashes
The ashes must be cleaned out regularly and properly after every 3 or 5 loads of firewood,
depending on the type of wood. The ashes accumulate in both the loading compartment and
the refractory combustion chamber and in the flue. The ash could be deposited in the ash box.
To clean the boiler, follow these steps:
- The boiler must be cold before cleaning. Wait 2-3 hours after all the fuel has been finished.
- Open the top loading door, clean the ashes through the hole in the refractory burner using the
cleaning rake provided with the boiler. We recommend that you save part of the ashes and
carbonised wood to make it easier to light the next time. Avoid scraping the rake on the
middle refractory part in order to avoid abrasion of the part.
- Close the top loading door and open the bottom front door. Remove the ashes that have built
up inside the combustion chamber and surrounding areas.
- Clean the flue by moving the lever towards the boiler approximately 10 times. Perform full 90º
cycles.
NOTE: The flue cleaning lever can be placed on the opposite side of the boiler. To do so,
remove the sides, the back part of the roof and the flue lid, loosen the lever and the arm of
the cleaning axle, remove the axle and place it in the reverse position.
8.1.2
Tar
Clean the tar from the metal surface of the fuel loading chamber using the scraper. The
gasification process produces tar and the amount will depend on the type of wood, its humidity
and the water inlet and outlet temperatures. It is recommended that it be cleaned once a month,
although the frequency may vary depending on the type of wood used.
Summary of Contents for LIGNUM NG 20
Page 1: ...INSTALLATION AND OPERATING INSTRUCTIONS LIGNUM NG ...
Page 36: ...Lignum NG 34 Outside ...
Page 42: ...Lignum NG 40 NOTES ...
Page 43: ...41 NOTES ...
