Stoves and solid fuel fireplaces questions and answers

Cause: Poor fuel quality.

Solution: Use better fuel (with higher calorific value).

Cause: Insufficient draft.

Solution: Increase chimney height (e.g. over 6 m). Draft must comply with technical requirements (12–14 Pa).

Cause: Blocked chimney/flue pipes.

Solution: Clean the chimney and flue pipes.

Cause: Excessive draft.

Solution: Reduce draft (install a damper).

Cause: Too many connected radiators.

Solution: Reduce the number of radiators. The total water volume in radiators should be twice the boiler volume. Avoid long and uninsulated piping systems.

Cause: Poor circulation.

Solution: Radiators must not be below the boiler level. Bleed the radiators.

Cause: Insufficient chimney draft.

Solution: Extend the chimney.

Cause: Blocked chimney.

Solution: Clean the chimney.

Cause: Another stove connected to the same chimney within less than 2 m distance.

Solution: Disconnect one stove.

Cause: Cracks in the chimney or open inspection door.

Solution: Seal all cracks and ensure all doors and inspection openings are airtight.

Cause: Damaged fireclay or seal under the top plate.

Solution: Remove the plate and repair sealing using fireclay powder and sealing rope.

Cause: Condensation caused by lighting a cold stove (most common in the morning).

Solution: Dry the stove and build a stronger fire.

Cause: Very wet wood, low combustion temperature.

Solution: Improve fuel quality.

Cause: No circulation.

Solution: Check if the pump is working and if all valves are open.

Cause: Too many connected radiators.

Solution: Reduce the number of radiators.

Cause: Faulty thermostat.

Solution: Check or replace the thermostat.