Hearth Requirements And Floor Protection - HearthStone 8220 Owner's Manual

H R
EARTH EQUIREMENTS
P
ROTECTION
Install your stove on the following:
A non-combustible floor protector that you
obtain from your dealer, or any other
noncombustible material. A floor protector
is any noncombustible surface laid on the
floor underneath the stove that extends, 16
inches -US (or 46 cm in Canada) beyond
the fuel loading door and 8 inches (20 cm)
beyond each side of the cook stove. (See
Figure 1) The hearth protection for your
Deva 100 must have an R-value of at least
0.89 or be a UL Listed floor protection.
An example of a non-combustible floor
protector would be a hearth constructed
with a continuous layer of a listed backer
board (such as Micore, Wonder-Board or
Durock) used for ember protection with a
tile, brick, slate,
combustible facing.
For horizontal chimney connector installations,
the floor protection must be installed beneath
the connector and 2" beyond each side.
Floor protector's come with various types of
specifications. To convert a floor protector's
specification to an R-value, do one of the
following:
•
If the R-value is given, use that value—
no conversion is needed.
•
If a K-factor is given with a required
thickness (T) in inches, use this
formula: R-value = 1/K x T
•
If a C-factor is given, use the formula:
R-value = 1/C
To determine the R-value of the proposed
alternate floor protector:
•
Use either the K-factor or the C-factor
formula explained above to convert
specifications not expressed as
R-values.
•
For multiple layers of floor protectors,
simply add the R-values of each layer
to determine the overall R-value of the
layers.
A F
ND LOOR
or another noon-
Hearthstone Quality Home Heating Products, Inc ®
If the overall R-value of your setup is greater
than the R-value of the specified floor protector,
then your setup is acceptable.
If venting the unit using the rear exit, floor
protection must extend 2" on either side of pipe.
8
23-3/4
16 (US)
18 (CAN)"
Figure 1 - Hearth Protection for top vent
installations
9
39-3/4(US)
41-3/4(CAN)"
56"
Model 8220