Firebox Framing
Construct firebox framing following Figures
9through 11 and Table 1 on Page 11 for your specific installation requirements. Refer to Figure 8 on Page 10 for firebox dimensions.
The firebox may be installed directly on a combustible floor or raised on a platform of an appropriate height. Do not place firebox on carpeting, vinyl or other soft floor coverings. It may, however, be placed on flat wood, plywood, particle board, metal or other hard surfaces which extend the full width and depth of the enclosure. Be sure firebox rests on a solid continuous floor or platform with appropriate framing for support and so that no cold air can enter room from under the firebox.
CAUTION
Do not block the
The firebox may be positioned and then the framing built around it, or the framing may be constructed and the firebox positioned into the opening.
Usually, no special floor support is needed for the firebox, however, to be certain:
1.Estimate the total weight of the firebox system and surround materials such as marble, brick, stone, etc., to be installed (see Product Referance Table on Page 10 for appliance weight).
2.Measure the square footage of the floor space to be occupied by the system and surrounds.
3.Note the floor construction, i.e. 2" x 6", 2" x 8" or 2" x 10", single or double joists, type and thickness of floor boards.
4.Use this information and consult your lo- cal building code to determine if you need additional support.
If you plan to raise the firebox, build the platform assembly then position firebox on top. Secure the platform to the floor to prevent possible shifting.
Firebox Installation
Step 1. Frame these appliances as illustrated in Figures 9 through 11. All framing details must allow for a minimum clearance to combustible framing members as shown in Figures 2 through 6. Also refer to appliance specifications on Page 10 . Headers may be in direct contact with the appliance top spacers but must not be supported by them or notched to fit around them. All construction above the appliance must be self supporting, DO NOT USE THE APPLI-
ANCE FOR STRUCTURAL SUPPORT.
Note: The framed depth from a framed wall, must always be measured from a finished surface. If a wall covering such as drywall is to be attached to the rear wall, then the depth must be measured from the drywall surface. It is important that this dimension be exact.
Step 2. Level the firebox by checking the top edge of the firebox. Shim if necessary.
Step 3. Fireplace should be secured to side framing members using the full length nailing tabs at the top and bottom of the fireplace front face. Use 8d nails (see Figure 7).
NOTE: DIAGRAMS & ILLUSTRATION ARE NOT TO SCALE.
Note: The nailing flange and the area directly behind the nailing flange is exempt from the clearances described on the firebox clearance label.
Step 4. To safely operate the heater with consideration of the mantel clearances the canopy must be installed (Model
IMPORTANT
Under no circumstances shall the firebox top spacers be removed or modified (see Figure 8). The header may be in direct contact with the top spacers but must not be supported by them or notched to fit around them.
Top Spacer
8d Nail
Figure 7
9