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Remove the screw from the test point and insert the hose or test probe of the
manometer or draught gauge. Record the reading in pascals (Pa). The optimum reading
should be in the range of 12-15Pa. A flue draught may exceed 15Pa but must not exceed
24Pa. Anything above 24Pa may result in the over-firing of the stove. As a direct
consequence of this the fuel consumption will be excessive which may result in a
chimney fire. Remove the hose or test probe and replace the screw confirming the test
point is sealed.
If the flue draught is outside the specified range for the appliance, remedial action is
necessary to correct the problem and allow the chimney to operate at the correct
draught. This might typically include adding a draught stabilizer to reduce too high a
draught or lining and insulating an overly large chimney if the draught is too low.
The chimney must be swept before fitting a liner to the stove and it is a condition of the
warranty that it must be swept every twelve months thereafter, but not limited to
depending on use. If used regularly, it is recommended that your chimney is swept every
six months.
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