50
Hoval STU Wood Pellet Boiler
Appendix - D
Operating, Cleaning and Fault - Finding Procedures
DE-ASHING THE BOILER
Use personal protection (Gloves, Goggles and Mask)
1)
It is necessary to clear the ash from the combustion chamber, with
the Rake provided, on a regular basis. The frequency of this will
depend on site’s requirements for heat and the outside temperatures.
2)
Switch the Wood burner to the
“I.D. Fan Only”
position, found on the
ID FAN ONLY/OFF/AUTO selector switch mounted on the control
panel.
3)
Take care when opening the large door.
4)
Only the fine ash should be removed, leaving the semi burnt pellets
around the tuyeres inside the boiler.
5)
Clean the small hole for the combustion chamber pressure switch
sensing point, which is found on the L.H.S of the combustion
chamber , close to the boiler door.
6)
Close the door and reset the selector switch to the
“Auto”
position.
CAUTION
ashes may still be hot, dispose of with care.
