Site Requirements, Flue and Chimney Requirements

INSTALLATION INSTRUCTIONS

SITE REQUIREMENTS

1.FLUE AND CHIMNEY REQUIREMENTS

1.1The chimney or flue system must comply with the rules in force, and must be a minimum of 125mm (5”) in diameter. Pre cast 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 appliance to a pre cast flue, the total minimum depth of fire opening necessary is (D) 215mm. This allows a 25mm space behind the appliance 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 space (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.

A = Minimum precast flue starter block depth (115mm).

B = Plasterboard and adhesive seal all around fire opening. C = Gazco spacer (8315)

D = Minimum total depth including 25mm for debris.

AB C

Hearth level

AR1217

When fitting the Logic Convector fire and a Stovax Cast Iron Convector fireplace to a precast letter box flue with a standard starter block, the 8315 spacer kit will be required, together with an extra deep 142mm rebate surround.

The Combination Convector breast. Fireplace requires a 75mm stud-work chimney breast.

The appliance 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.

Class 1 flues. Chimneys over 9” x 9” must be lined.

A flue restrictor is provided with the Logic convector. This must be fitted when the flue is 9” x 9” or when the flue pull is excessive. This is fitted from inside the appliance across the outlet at the top of the convector box with two screws provided.

1.2The minimum effective height of the flue or chimney must be 3 m (10ft).

1.3The 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.

1.4The chimney should be swept immediately prior to the installation of the appliance - unless it can be seen to be clean and unobstructed throughout its entire length.

1.5Ensure that there is a smooth taper transition from the fireplace opening into the chimney or flue.

1.6The flue pull should be checked prior to installation of the appliance. 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.APPLIANCE LOCATION

2.1This appliance must stand on a non-combustible hearth that is at least 12mm thick and 50mm thick at least at the periphery.

2.2It must be fitted into a non-combustible opening.

2.3These appliances must be hearth mounted into a fireplace opening conforming to National Standards. The minimum dimensions shall be as shown in diagram 2.