Alternate Floor Protection - Quadra-Fire CUMBGAP-PMH Instruction Manual

R
CORNER INSTALLATIONS - USA ONLY
SIDE FUEL DOOR LOCKED SHUT
BOTH FUEL DOORS ACCESSIBLE
53-7/16"
optional
coverage
38-5/8"
8"
required coverage
11-1/8"
NOTE: Drawings are for
illustration purposes only
and are not to scale.
Page 8
Cumberland Gap Wood Stove
48-7/16"
optional coverage
44-3/4"
optional
coverage
Fuel loading
16"
door
25-3/4"
16"
18-5/8"
HORIZONTAL VENTING
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 non-combustible material to
the combustible material beneath it. The k value of a material
must be equal or smaller then the required k value to be accept-
able.
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 non-combustible material to
the combustible material beneath it. The R value of a material
must be equal or larger then the required R value to be accept-
able.
Converting k to R:
Divide 1 by k and multiply the results times the thickness in inch-
es of the material.
R = 1/k x inches of thickness
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.
7006-188E
(BTU) (inch)
o
(foot 2 (hour) ( F)
Floor protection must extend
length of flue and 2" (51mm)
beyond each side of pipe
(shaded area)
USA - Required
CANADA - Recommended
September 1, 2008