Heatiator BIR42 Indoor Fireplace User Manual


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12
Finishing
A. Non-combustible Materials
• Materialswhichwillnotigniteandburn,composedofany
combinationofthefollowing:
- Steel - Iron
- Brick - Tile
- Concrete - Slate
- Glass - Plasters
• Materialsreportedaspassing ASTM E 136, Standard
Test Method for Behavior of Metals, in a Vertical Tube
Furnace at 750° C
B. Combustible Materials
• Materialsmadeoforsurfacedwithanyofthefollowing
materials:
- Wood - Compressedpaper
- Plantbers - Plastic
• Anymaterialthatcanigniteandburn;ameproofedor
not,plasteredorun-plastered
66 in.
(1676 mm)
42 in.
(1067 mm)
12 in.
(305 mm)
12 in.
(305 mm)
Raised Platform
20 in. (508 mm) Minimum
Flush Hearth
30 in. (762 mm) Minimum
Figure 12.1 Hearth Extension Dimensions
Table 12.2
C. Hearth Extension
WARNING! High temperatures, sparks, em-
bers or other burning material falling from the replace may
ignite ooring or concealed combustible surfaces.
• Metal hearth strips MUST be installed (Section 7.C.).
• Hearth extensions MUST be installed exactly as
specied.
Table 12.1
Hearth Extension Insulation Alternatives-Total minimum R Value must equal 2.32
Material
k per inch
thick
R per inch
thick Minimum thickness required
Hearth&HomeHX3,HX4(Micore300™) 0.49 2.06 1in.(25.4mm)
USGMicore160™ 0.39 2.54 1in.(25.4mm)
USGDurock™CementBoard 1.92 0.52 4in.(101.6mm)
CementMortar 5.0 0.20 10in.(254mm)
CommonBrick 5.0 0.20 10in.(254mm)
CeramicTile 12.50 0.08 25-3/4in.(654mm)
Armstrong™PrivacyGuardPlus 0.46 2.18 1in.(25.4mm)
Marble 14.3to20.0 0.07to0.05 29-1/2to41in.(749.3to1041.4mm)
R = 1/k x inches of thickness
• YouMUSTuseahearthextensionwiththisreplace.
• Thisreplacehasbeentestedandapprovedforusewith
a hearth extensioninsulated toa minimumR valueof
2.32.
• ThehearthextensionmaterialMUSTbecoveredwithtile,
stoneorothernon-combustiblematerial.
• Manufacturedhearthmaterialswillusuallyhaveapublished
R value(resistancetoheat)ork value(conductivityof
heat).RefertotheformulainTable12.1toconvertak
valuetoanRvalue,
• Referto Table 12.2 for hearth extension insulation
alternatives.
(R value of hearth must be
equal to or greater than 2.32)
Heatilator•BirminghamBIR42•4059-308RevJ•1/11
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