3.9. Trouble shooting
Situation
Probable causes
-
Corrective action
Fire difficult to start. Fire goes
out.
Wood green… or too damp
-
Use hard wood logs, which have been cut for at least
two years and stored, under a ventilated shelter.
Logs are too big.
-
To light the fire, use small, very dry twigs. To maintain
the fire, use split logs.
Poor quality wood.
-
Use hardwood that have a higher calorific value per cu
metre (Yoke-elm, oak, ash, maple, birch, elm, beech,
etc.)
Not enough primary air
-
Open air control.
-
Open the outside fresh air inlet grid.
Insufficient draught.
-
Open temporarily the flue damper control.
-
Check that the flue is not obstructed, sweep it if
necessary,
-
Seek advice from a chimney specialist.
Fire burns too quickly.
Too much draught.
-
Partially close the air control.
Excessive draught.
-
Check that the chimney-flap does not remain opened.
-
Install a draught stabiliser to the connector pipe.
Poor quality wood.
-
Do not continuously burn small wood, sticks, bundles,
carpentry offcuts (plywood, pallets), etc.
Smokes when lighting up.
The flue damper is closed
-
Open the flue damper
Flue duct is cold.
-
Burn paper and kindling wood to increase heat.
Room is in decompression
(negative pressure).
-
In houses equipped with mechanical ventilation, partly
open a window until the fire is well established.
Smokes while burning.
Insufficient draught.
-
Open temporarily the flue damper control.
-
Consult a chimney specialist
-
Check that the flue is not obstructed, sweep it if
necessary,
Down draught.
-
Install an anti-down draught cowl.
Room is in decompression
(negative pressure).
-
In houses equipped with mechanical ventilation, an
outside air intake must be installed in addition to the
chimney itself
Low heat output.
Poor quality wood.
-
Use the recommended fuel.
Poor mixing of the convection air.
-
Check the air flow system (air inlet, piping, air outlet).
-
Check that the next rooms are equiped with ventilation
grids to help out the hot air circulation.
14
Technical manual “1248”
“HEKLA” - ref. 634 07 46 & 634 07 47
Instructions for user
: This sign means that you should
asked for a qualified engineer
to do the work.
