Enviro DV50DX owner manual Initial Installation, Qualified Installers Only, Fireplace Surround

Figure 15. Floor Level Hearth Requirements With

Dimensions Around Opening.

Initial Installation

QUALIFIED INSTALLERS ONLY

If the unit is raised 4” (102mm) or less it is mandatory to have a hearth installed with a protector pad (sheet metal) placed directly on the floor or hearth framing, with the cement board (see specs below) on top of it. Tile, or another non-combustible material forms the top layer of the hearth. A decorative trim may be added to the edge of the hearth. The trim can be

combustible as long as the hearth extends at least 16”

(406 mm) in front of the fireplace and 1” (25 mm) on either side of the fireplace opening (see Figure 15). To install the face, it is necessary for the bottom flange of the fireplace opening to overlap or be flush with the tile. If the total thickness of the protector pad, cement board, and finished tile is more than 11⁄2” (38 mm) the fireplace must be raised to accommodate additional thickness.

Figure 14. Raised Fireplace with Raised Hearth

FIREPLACE SURROUND:

NOTE: Any paint that is applied to the mantel or facing above the unit should be “heat resistance” or it may discolour.

CEMENT BOARD: The cement board can be fastened to the front of the unit with self- drilling metal screws. It is safe to screw to the outer border of the fireplace. Cement board for the hearth can be purchased at a local building material store. The board must have a k-value of 7.69 Btu/(ft² × h × °F) [13 W/m × K] and a R-value of 0.13 ft² × h × °F/Btu [0.023 m² × K/W] or better.

TILED FINISH: Because of the amount of heat exuded by the fireplace, drywall cannot come directly up to the fireplace. Figure 15 shows the minimum dimensions for the cement board. Tile or other non-combustible materials cover the cement board, but do not overlap into the fireplace opening. The total depth of the cement board and the finishing materials should be a minimum of 1” (25 mm) to maximum of 13⁄8” (35 mm). The fireplace front will be installed over top of the finishing material.

SMOOTH FINISH: The fireplace will have to be recessed by 1⁄2” (12 mm) and two (2) layers of cement board must be used if the area

around the fireplace will be finished flush with the rest of the wall.

ROCK OR BRICK FINISH: If the face of the fireplace is to be recessed, the face option chosen will determine the size and shape of the surrounding material (i.e. brickwork). Since the dimensions provided on the face option instruction sheet are only approximations, it is recommended that the steel template of the chosen face is used. See PARTS LIST - OPTIONS for the face template part number.

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