Yeoman YM-CL3MF, YM-CL8W, YM-CL5W, YM-CL8MF, YM-CL5MF manual Burning tips

USER INSTRUCTIONS

5.12Do not burn bituminous coal, ‘petro-coke’ or other petroleum based fuels, as this invalidates the product guarantee.

Do not load fuel above the log guard and the secondary combustion inlets at the back of the firebox

(see Diagram 6).

6.Burning tips

6.1Fuel Quality (Wood)

Use wood with a moisture content of less than 20%. Seasoned logs have the bark beginning to lift and peel away and cracks radiating from the centre. They feel lighter than fresh cut wood of a similar size and sound hollow when struck against each other. Logs should not feel damp or have moss and fungal growths.

Symptoms related to wet wood:

—Difficulty starting and keeping a fire burning well.

—Smoke and small flames.

—Dirty glass and/or firebricks.

—Rapid creosote build-up in the chimney.

—Low heat output.

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

Burn at a high temperature for a short period each day to avoid large build-ups of tars and creosote within the appliance and the flue system.

Use Stovax Protector chimney cleaner to reduce this problem.

6.2Fuel Quality (Solid Fuel)

Use recommended solid fuels approved for use with closed appliances.

Symptoms related to unsuitable fuels include:

—Difficulty starting and keeping a fire burning well.

—Smoke and small flames.

—Dirty glass and/or fire bricks.

—Short life span for Grate, Baffle and internal Firebricks.

—Permanent staining of glass.

6.3Air inlets puffing smoke

Combustion gases can build up in the firebox and ignite as small explosions, causing smoke to puff out of the air inlets and other openings. This occurs if the air controls are shut soon after adding new fuel to a very hot fire. Stop by opening the air controls to increase combustion air and burning rate.

6.4Flue Draught

The chimney has two main functions:

1)To safely remove the smoke, gases and fumes from the house.

2)To provide a sufficient amount of draught (suction) in the appliance ensuring the fire keeps burning.

Draught is caused by the rising hot air in the chimney when the appliance is lit.

Symptoms of poor performance related to flue draught include:

—Excessive fuel consumption (high flue draught).

—Poor burning control, overheating (high flue draught).

—Wind noise from air controls (high flue draught).

—Difficulty getting a fire going and keeping it burning well (low flue draught).

—Low heat output (low flue draught).

—Smoke entering room when doors opened (low flue draught).

The construction, position, size and height of the chimney all affect the performance of the flue draught.

Other factors effecting the flue draught include:

—Trees or other buildings nearby causing turbulence.

—Outside temperature.

—Outside weather conditions.

—Incorrect additional ventilation to building.

—Blocked flue / chimney.

For advice on the correction of persistent flue problems consult a qualified solid fuel heating engineer before continuing to use the appliance.

6.5Weather conditions

The weather conditions outside the building can effect the burning performance of the appliance. These could include:

Weather Conditions	Problem	Effect
Windy days	Buildings/Obstacles	Smoky Appliance
	cause turbulent air
	around chimney.
Calm days	Oversized Chimney.	Smoky Appliance
Damp / Rainy days	Flue temperature	Lighting and
	not hot enough.	burning problems
	Rain water inside
	chimney.

To reduce these problems:

—Use good quality kindling wood to start the fire.

—Burn initially at a high temperature for a short period.

—Fit a rain cowl to the chimney.

Your installer should advise you on possible solutions.

If the appliance emits smoke into the room continuously:

—Close the air controls and allow the appliance to go out.

—Ventilate the room to clear the fumes.

Do not re-light the appliance until the problem is solved.

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