Stovax 7118 manual Recommended Fuels, Burning performance

OPERATING INSTRUCTIONS

retainer, scoop out the ash with a suitable shovel. It is best to leave a layer of ash in the stove to form a bed for the new fire.

7.4Do not place ash in a bin made from plastic or any other combustible material.

8.RECOMMENDED FUELS

8.1Wood: - Burn only seasoned timber, with a moisture content of less than 20%. In most cases, this would require drying cut wood for 12 to 18 months before use. Poor quality timber could cause low combustion efficiency, produce large amounts of harmful condensation, which could reduce the effectiveness of the airwash system, and ultimately the life of the stove.

Do not burn painted, impregnated wood or manufactured board products.

To help avoid large build-ups of tars and creosote within the stove and the flue system, it is recommended to burn at maximum output for at least 30 minutes each day. The use of Stovax Protector chimney cleaner will also help to reduce this problem.

8.2Solid fuel: -Burn only manufactured smokeless fuels listed as suitable for use with closed heating stoves. Do not burn bituminous coal, ‘petro-coke’ or other petroleum based fuels, as this will invalidate any product guarantee.

8.3Fuel consumption at nominal heat output.

As tested to the requirements of EN13240 for nominal heat output.

	Fuel Consumption
Description	Kg/Hour	Kg/Hour
	Wood	Briquetted
		Smokless Fuel
Stockton 3	1.4	0.7
Stockton 4	1.4	0.7
Stockton 5/5ML	1.5	0.7
Stockton 6/6HL	1.9	0.9
Stockton 7	.4	1.1
Stockton 8	.8	1.3
Stockton 11	.5	N/A

Fuel consumption for canopy models is the same as equivalent flat top model.

9. burning performance

If you require advice on suitable solid fuels contact your local Approved Coal Merchant. Details can be obtained by ringing the Solid Fuel Association advice line on Freephone 0800 600 000. Or their web site at www.solidfuel.co.uk

A number of factors can affect the performance of the Stockton stove. Some of these are listed.

9.1Fuel Quality (Wood)

Use only seasoned wood with a moisture content of less than 20%. Well seasoned logs should have the bark beginning to lift and peel away, along with deep cracks radiating from the centre of the log. Logs should feel lighter than fresh cut wood of a similar size and sound hollow when struck against each other. Logs should not feel damp to the touch, have any visible moisture oozing from them or moss and fungal growths on them.

Symptoms of poor performance related to wet woods include:

•Difficulty getting a fire going and keeping it burning well,

•Smoky fires with little flame,

•Dirty glass,

•Dirty firebricks,

•Rapid creosote build-up in the chimney,

•Low heat output,

•Short burn times, excessive fuel consumption and blue/ grey smoke from the chimney.

9.2Fuel Quality (Solid Fuel)

Use only recommended solid fuels, which are approved for use with closed appliances. Symptoms of poor performance related to unsuitable fuels include:

•Difficulty getting a fire going and keeping it burning well,

•Smoky fires with little flame,

•Dirty glass,

•Dirty firebricks,

•Short life span for grate, baffles and internal firebricks,

•Permanent staining of glass.

9.3Backpuffing

This is caused by a lack of combustion air entering the firebox causing combustion gases to build up in the firebox and periodically ignite as small explosions, causing smoke to puff out of the appliance air inlets and other openings. The problem will often occur if the air controls are shut soon after adding new fuel to a very hot fire. To stop backpuffing occurring open the air controls to increase the combustion air and increase the burning rate.