Stovax PR0741 - Manual (Page 14)

1. FLUE AND ChIMNEy REQUIREMENTS
1.1 The chimney or flue system must comply with the rules in
force, and must be a minimum of 125mm (5”) in diameter.
Precast flues must conform to BS1289: 1986. The cross
sectional area of the flue must be 16500 mm2 with a
minimum dimension of 90mm.
*When fitting the fire to a precast flue, the total minimum depth
of fire opening necessary is (D) 215mm. This allows a 25mm space
behind the fire for debris, required on this type of flue system. This
is achieved either by using = (A) a 115mm deep starter block +
(B) a 25mm plasterboard and sealed space + (C) 75mm Gazco
Spacer (part number 8315) with a marble slip or similar, inserted
behind the spacer front flange, see diagram 1.
Or the total depth can be achieved by using a deeper starter
block, remedial building work to the front of the fireplace opening,
and a marble slip or similar, or a combination of this.
NEvER PLASTER DIRECT TO ThE FACE OF A PRECAST FLUE.
USE adHESIVE To FIx THE PLaSTErBoard To THE FaCE oF
ThE FLUE AND FINALLy SKIM ThE PLASTERBOARD.
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Gazco Spacer (optional)
The fire can also be fitted into a metal flue box with a 5” (125mm)
diameter flexible liner. In this installation a 1” (25mm) rebated fire
surround must be used. Refer to diagram 2 for dimensions.
1.2 The minimum effective height of the flue or chimney must
be 3 m (10ft).
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INSTALLATION INSTRUCTIONS
SITE REQUIREMENTS
1.3 The chimney or flue must be free from any obstruction.
Any damper plates should be removed or secured in the
fully open position, and no restrictor plates should be fitted.
1.4 The chimney should be swept immediately prior to the
installation of the fire - unless it can be seen to be clean and
unobstructed throughout its entire length.
1.5 Ensure that there is a smooth taper transition from the
fireplace opening into the chimney or flue.
1.6 The flue pull should be checked prior to installation of the
fire. Apply a smoke pellet to the flue or chimney
opening and ensure that the smoke is drawn into the
opening. If there is not a definite flow, preheat the chimney
for a few minutes and re-test the flow.
IF ThERE IS STILL NO DEFINITE FLOw, ThE ChIMNEy
May rEQUIrE aTTEnTIon - SEEK ExPErT adVICE.
2. FIRE LOCATION
2.1 This fire must stand on a non-combustible hearth that is at
least 12mm thick and 50mm thick at least at the periphery.
If the fire is installed greater than 50mm above the floor,
then no hearth is required, although due consideration
should be given to how the heat may affect the floor
material.
2.2 NOTE: It is recommended you construct the back panel of
the fireplace from natural materials cut into three or more
sections to prevent cracking. Resin-based materials may not
be suitable. This appliance is an effective heat producer and
attention must be paid to the construction and finish of the
fireplace.
2.3 It must be fitted into a non-combustible opening.
2.4 These fires must be hearth mounted into a fireplace
opening conforming to National Standards. The minimum
dimensions shall be as shown in diagram 2.
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