Acquisitions Cannonbury Compact Installations- und Gebrauchsanweisungen - Seite 3

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Fig. 2 - Chimney and Flue Performance

FLUE DRAUGHT

The chimney can be checked, before the stove is installed, with a smoke pellet. If the chimney doesn't

pull the smoke it may suggest the chimney needs attention (see the Flue Diagnosis Table, on page 5).

MEASUREMENTS

The flue draught test hole must be drilled in the flue pipe as close to the stove as possible and before

any flue draught stabiliser.

This test is only a guide as an apparently poor flue may improve once the stove is

installed, lit and the flue is warmed. If, once the stove is installed, there is any doubt

that the chimney is providing an adequate draught, a flue draught reading can be

taken with the stove lit. Two flue draught readings should be taken, one with the stove

at minimum firing rate and one at maximum firing rate.

Effect of adjacent buildings, hills

or tall trees on the exit of flue gases

MINIMUM

The stove should be lit and allowed to warm the flue thoroughly. The air controls can then be set so

that the stove burns on a low setting. Allow the burning rate to become steady. The flue draught

reading should now be taken with the primary air intake closed and the airwash control fully open.

MAXIMUM

The primary air intake can now be opened to allow the stove to burn at maximum rate. Give the stove

some time for the burning rate to become steady and then close the primary air intake, make sure the

airwash control is fully open and take a flue draught reading immediately.

Ideally, the flue draught reading should range between 1mm and 2.5mm wg. Any readings significantly

outside this range may indicate the need for remedial action.

Low flue draught symptoms:

Low flue draught symptoms: difficult to light and smoke coming into the room.

Low flue draught symptoms:

CAUSE

REMEDY

Cold chimney

Line the chimney

Chimney too short

Extend the chimney

Relocate/extend chimney terminal.

Down draught

Fit an anti down draught cowl

Chimney diameter too large

Line the chimney

Chimney obstruction

Clear/sweep the chimney

Check for competing draughts (other chimneys, extractor hoods/fans).

Restricted air supply

Fit an air vent if the room is sealed.

High flue draught symptoms:

High flue draught symptoms: fire difficult to control, fuel will not last, stove too hot, stove damage,

chimney fire.

CAUSE

REMEDY

External wind conditions combined

Fit stabiliser cowl.

with chimney terminal

Fit flue draught stabiliser.

FLUE STABILISER

A flue stabiliser can be fitted to reduce the draught through the stove if the flue draught is too high.

The flue stabiliser should be :

Fitted in the same room as the stove.

•

The same size as the flue pipe.

•

Fitted no closer than 700mm to the flue outlet of the appliance.

•