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3.3
Checking for Clearance of Combustion Products
a)
Close all doors and windows in the room. Remove the dress guard.
b)
Light the fire and turn to the maximum position.
After 5 minutes hold the smoke match as shown in Fig. 5. Whilst hold
ing the smoke match in the correct position, approximately 5mm below
and inside the lower edge of the centre of the canopy.
Ensure that most of the smoke is drawn into the flue aperture. If in
doubt repeat the exercise after a further 5/10 minutes.
Note:-
It is recommended that the smoke match is fitted into an approved
smoke match holder, when checking for clearance of combustion
products.
Fig. 5
e)
If the smoke is not drawn into the flue aperture, remove the flue spigot
restrictor if fitted and repeat the spillage test.
If there is an extractor fan fitted in a joining room, then the spillage test must be
repeated with the fan switched on and running at maximum speed. All
interconnecting doors must be opened in accordance with the latest issue of BS
5440.
13
Smoke match position
approx. 5mm below
and inside the front
edge of the combustion
chamber lid.
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