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3.3
Checking for Clearance of Combustion Products
Note :
This test should be carried out with the case removed to prevent
staining.
a)
Close all doors and windows in the room.
b)
Light the fire and turn to the maximum position.
After 5 minutes hold the smoke match as shown in Fig. 6. Whilst hold
ing the smoke match in the correct position, approximately 10mm below
and inside the lower edge of the centre of the canopy. See Fig 6.
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. 6
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 intercon-
necting doors must be opened in accordance with the latest issue of BS 5440.
IF SPILLAGE IS DETECTED
The cause must be discovered and the fault corrected. If the fault cannot be cor-
rected disconnect the appliance from the gas supply and seek expert advice.
Possible causes of spillage from the appliance are:- chimney restriction, down
draught or insufficient air supply to the room.
g)
After ensuring that the fire is safe to use it should be left on "High"
position to fully warm up. During this time a slight odour may be
noticed, this is due to the "newness" of the fire and will soon disappear.
14
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