15
FIREPLACE INSTALLATION
Locating the BIS ULTRA
1.
The best location for your fireplace is determined by considering the location of windows,
doors, and the traffic flow in the room where the fireplace is located, allowing space in front of the
unit for the hearth extension and the mantel, and taking into consideration the location of the hot air
ducts (optional), outside air kit and chimney. If possible, you should choose a location where the
chimney will pass through the house without cutting floor or roof joists (see fireplace dimensions
page 16).
2.
Usually, no additional floor support is needed for the fireplace. The adequacy of the floor
can be checked by first estimating the weight of the fireplace system. Weights are given in the
appendix. Next, measure the area occupied by the fireplace which is normally 38" X 24 ½". Note
the floor construction and consult your local building code to determine if additional support is
needed.
3.
The BIS ULTRA may be installed directly on the floor or on a raised base (for proper
guidelines, refer to
"Hearth
extension requirements"
) and a minimum of 6'8" measured from the
base of the appliance to the ceiling is required.
Hearth extension requirements
The BIS ULTRA may be installed directly on a combustible floor, however the hearth extension in
front of the fireplace must be made of non combustible material and incorporate ½" air space to the
wood floor (fig.5). To maintain that ½" air space, you must use non-combustible material to frame
the hearth extension support and create the air gap or use a sheet metal part (7B30ZM)
manufactured by Security Chimneys International. It must be covered with tile, marble, stone or
other non-combustible material.
If the fireplace is raised a minimum of 4" from the floor, then the air space is not necessary but a
piece of sheet metal must be fabricated to join the bottom of the fireplace to the hearth extension
(fig. 6).
Figure 5 Figure 6
