Enviro DV42DX - Manual (Page 16)

Initial Installation
QUALIFIED INSTALLERS ONLY
trim can be combustible as long as the hearth extends at least 12” (305 mm) in front of the fireplace
and 1” (25 mm) on either side of the fireplace opening. 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 1” (25 mm) the fireplace must be raised to
accommodate additional thickness. NOTE: The Manor (the cast iron) face does NOT require any
floor protection even when installed at floor level.
F
iRePLace
s
uRRounD
:
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 (metric version: 13
W/m × K) and a R-value of 0.13 (metric version: 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 21 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 1⅜” (35 cm). The fireplace front will be installed over top of the finishing material.
SMOOTH FINISH: The fireplace will have to be
recessed by ½” (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 P artS l iSt - o PtionS for the face template part
number.
Figure 21. Dimensions Facing Around Opening.
Figure 20. Floor Level Hearth
Requirements
Figure 19. Raised Fireplace with
Raised Hearth
If the unit is raised less than
3” (76mm) 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
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