Installation manual

16
3.4.2 Heart Extension Requirements
The ENERZONE SOLUTION 2.5ZC may be installed directly on a combustible floor;
however, the combustible floor in front of the fireplace must be covered with a non-
combustible material (tile, marble, stone, etc.). The hearth extension floor area shall extend at
least 16" in front and at least 8" on each side of the fireplace opening. (see figure 4). The floor
protector in front of the fireplace must have a R value of 1.53 or greater.
Convert specification to R-value:
k-factor is given with a required thickness (T) in inches: R=1/k x T
C-factor is given: R=1/C
41 3/4"
16"
3"
45°
50" MIN.
6.000"
17" MIN.
COMBUSTIBLE
SHELF
AREA WHERE
WOOD MANTEL
CAN BE INSTALLED
NON COMBUSTIBLE
MATERIAL
Figure 4
3.4.3 Framing, Facing, Mantel, and Combustible Shelf
The construction of the framing, facing, and mantel must be in accordance with the standards
and the following illustrations (figures 4 to 11):
A. Frame the fireplace using 2" × 3" or heavier lumber.
B. WARNING
: Combustible framing material cannot be used in the space directly above the
fireplace, except for the studs above the facing that support the facing material and
mantel. This area must remain empty for a height of 7′ (2,15 m) measured from the base
of the appliance.
C. Frame the fireplace with vertical studs at the sides of the fireplace running from floor to
ceiling (see figure 6). Position the studs back from the front edge of the fireplace, a space
the thickness of the facing material so that the facing can be installed flush with the