5100-I ACT WOOD INSERT
R
B. Clearance to Combustibles
Maximum Mantel Depth: 12 inches (305mm)
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SideWall | B | Fascia or Trim | |
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| Insert | D | |
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Hearth Extension
Minimum Clearances To Combustible Material
Masonry, Heat Exchanger A | B | C | D | |
& *Zero Clearance | 12"/305mm | 40"/1015mm 35"/889mm 7"/178mm | ||
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With 8 inch (203mm) |
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Mantel Deflector | 12"/305mm | 27"/686mm | 16"/406mm 7"/178mm | |
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Maximum Mantel Depth | 12”/305mm |
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FLOOR PROTECTION | E | F | TRIM |
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| Side Trim | |||
USA 16"/406mm | 8"/200mm |
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CANADA 18"/450mm | 8"/200mm | Top Trim | 3/4” (19mm) thick | |
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*Zero Clearance Installations USA Only
D. Floor Protection USA & Canada
Thermal protection must be 1/2 inch (13mm) minimum thickness (“k” value = 0.84, R value = 0.59) or equivalent material.
All floor protection must be
E.Calculating Alternate Floor Protection Material
Thermal Conductivity: k value
The k value indicates the amount of heat (in BTU’s) that will flow in 1 hour through 1 square foot of a uniform material 1 inch thick for each degree (F) of temperature difference from one side of the material to the other. The LOWER the k factor means less heat is being conducted through the
k value to be acceptable. (BTU) (inch) (foot2 (hour) (oF)
Thermal Resistance: R value
The R value is a measure of a material’s resisteance to heat transfer. R value is convenient when more than one material is used since you can add the R values together, whereas you can not do this for k value. The HIGHER the R factor means less heat is being conducted through the
Converting k to R:
Divide 1 by k and multiply the results times the thickness in inches of the material.
R = 1/k x inches of thickness
C. Optional Mantel Deflector
Optional mantel deflectors may be purchased from your dealer to reduce clearances to a mantel. An 8 inch (203mm) deflector allows a reduction down to 27 inches (686mm).
Figure 9.1
Converting R to k:
Divide the inches of thickness by R. k = inches of thickness/R
Calculatons:
Example: Floor protection requires k value of 0.84 and 3/4 inch thick.
Alternative material has a k value of 0.6 and is 3/4 inch thick.
Divide 0.6 by .75 = k value of 0.80. This k value is smaller than 0.84 and therefore is acceptable.
WARNING
Fire Risk.
•Comply with all minimum clearances to combustibles as specified.
•Failure to comply may cause fire.
April 21, 2010 | Page |