50
Hoval STU Wood Pellet Boiler
Appendix - D
Operating, Cleaning and Fault - Finding Procedures
TO LIGHT THE BOILER
Manually
1)
Open the door.
2)
Switch the Wood burner KINDLE/OFF/AUTO selector switch to "
Auto
"
and allow the machine to run until the pellets are level with the top of
the retort tuyeres in the boiler.
The start-up sequence is:
I.D.
Fan start - 2min delay - F.D. Fan start - 4min delay - pellet feed start.
3)
Turn the Wood burner KINDLE/OFF/AUTO selector switch to the
“Off”
position when the pellets are level with the top of the retort
tuyeres.
4)
Light the fire using fire lighters or paper and cardboard and close the
door.
5)
Switch the wood burner KINDLE/OFF/AUTO selector switch back to
AUTO and ensure the
“Pick-up
and
Conveyor”
augers are turned off
at the isolators. The "AUTO/ID FAN ONLY selector switch should also be
in the "
Auto
" position
6)
Allow 10-15 mins. for the fire to get established and then turn the
local isolators back on.
8)
If the fire is not established allow more time before turning the
“Pick-up
and
Conveyor”
augers back on.
NOTE: For a boiler fitted with an ignition system the above procedure should
only be employed in the event that the ignition system fails to work.
TO LIGHT THE BOILER
With Ignition (where fitted)
Important: Before using the Electric Ignition system open the Boiler door and
CHECK that the Stoker Retort(s) are clear of pellets before initiating the Igni-
tion system
1)
Switch the control panel KINDLE/IGNITION
selector switch to the "
Ignition
"
position.
2)
Switch the Wood burner KINDLE/OFF/AUTO selector switch to "
Auto
" at
the panel and allow the machine to run. (The ignition will have three
attempts to light).
3)
When the fire is established switch the KINDLE/IGNITION selector switch
to the "
Kindle
" position and the boiler will operate as normal. The AUTO/ID
FAN ONLY selector switch should also be in the "
Auto
" position.
4)
Important: If the boiler fails to light on its third attempt, do not reset
the switch and attempt to fire again. Switch the wood burner KINDLE/
OFF/AUTO selector switch to the "Off" position and report the fault.