Fireplace Installation
Continued
2.If fireplace is to be installed directly on carpeting, tile (other than ceramic) or any combustible material other than wood flooring, fireplace must be installed upon a metal or wood panel extending full width and depth of fireplace.
3.Set fireplace directly in front of opening and slide unit back until nailing flanges touch side framing.
4.Check the level of fireplace and shim with sheet metal if necessary.
5.Before securing fireplace to prepared framing, ember protector (provided) must be placed between hearth extension (not supplied) and under bottom front edge of fireplace to protect against glowing embers falling through (see Figure 7). If fireplace is to be installed on a raised platform, a Z- type ember protector (not supplied) must be fabricated to fit your required platform height (see Figure 6). The ember protector should extend under fireplace a minimum
of 1 1/2". The ember protector should be made of galvanized sheet metal (28 gauge minimum) to prevent corrosion.
6.Using screws or nails, secure fireplace to the framing through flanges located on sides of the fireplace (see Figure 8).
"Z" TYPE EMBER PROTECTOR
(NOT SUPPLIED)
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16" |
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MIN. |
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REQUIRED |
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CLEARANCEIS | BY |
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PLATFORM MUST BE
SOLID, FLAT, AND
FULLY SUPPORTED
Figure 6 - Framing Firebox with “Z” Type
Ember Protectors
Ember Protector | 1/2" |
(1.2 cm) | |
(Typ of 2) | Maximum |
Figure 7 - Ember Protectors | |
| Nailing |
| Flanges |
3/4" | Nails or |
Clearance is | |
Not Required | Screws |
at Nailing |
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Flanges | Prepared |
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| Framing |
Figure 8 - Nailing Flanges
Hearth Extension
A hearth extension projecting a minimum of 16" in front of and a minimum of 8" beyond each side of the fireplace opening is required to protect combustible floor construction in front of fireplace (see Figure 9, page 6). Fabricate a hearth extension using a material which meets the following specifications: a layer of noncombustible, inorganic material having a thermal conductivity of K=0.84 BTU IN/FT, HR. F (or less) at 1" thick. For example, if the material selected has a K factor of 0.25, such as glass fiber, the following formula would apply:
0.25x 1.0" = 0.30" thickness required
Thermal conductivity "K" of materials can be obtained from manufacturer or supplier of noncombustible material.
If hearth extension is to be raised, a “Z” type ember protector must be used (see Figure 6 and Figure 10, page 6)
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