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13 <br /> 3.3 FLOOR PROTECTION <br /> 3.3.1 EMBER STRIP AND HEARTH EXTENSIONS <br /> EN <br /> HEARTH EXTENSIONS ARE TO BE INSTALLED ONLY AS DESCRIBED TO PREVENT HIGH <br /> TEMPERATURES FROM OCCURRING ON CONCEALED COMBUSTIBLE MATERIALS.HEARTH <br /> EMBER STRIPS PREVENT BURNING OR HOT PARTICLES FROM INADVERTENTLY FALLING <br /> DIRECTLY ON COMBUSTIBLE SURFACES IN THE EVENT THE BUILDING SHOULD SETTLE AND <br /> DISTURB THE ORIGINAL CONSTRUCTION. <br /> An acceptable 70"(1778mm)x 20"(508mm) non-combustible(ie: <br /> brick, stone or ceramic tile)hearth extension must be installed. Hearth <br /> must extend 20"(508mm)in front of the faceplate when it is not <br /> elevated(see local building codes). Hearth must extend a minimum of <br /> 12"(305mm)to both sides of the appliance door opening. <br /> The hearth must extend a minimum 20"(508mm)in front of the appliance • <br /> although if raised a minimum of 6 1/2"(165mm)the 20"(508mm)may be <br /> reduced to a minimum of 18"(0.45m). 11\� <br /> The hearth must be a minimum of 1"(25mm)thick cement board(or k <br /> equivalent)plus'/<"(6.4mm)ceramic tile. • <br /> Ensure that the gap between the appliance and a non-combustible <br /> hearth extension is sealed with sand/cement grout or covered with <br /> an ember strip(or both)to prevent sparks and embers from falling <br /> into this area. EMBER STRIP ice' <br /> Raised hearths must be constructed of non-combustible materials such (See"HEARTH <br /> as cement blocks or bricks. EXAMPLES"Section) <br /> While the appliance can be installed directly on the floor,a non-combustible hearth extension is required in <br /> front of the appliance.that must not be built higher than the bottom of the appliance faceplate. It may therefore <br /> be advisable to build the appliance on a raised platform. <br /> A raised hearth together with the appliance built on a raised platform is recommended for easier wood loading and <br /> fire viewing. <br /> W415-1642/04.15.16 <br />