VSW20 Wood Stove
20300059
13
INSTAllATION
ST1010
hollow wall pass thru
Sheet Metal Cover
(This Side Only)
18" (450 mm)
Empty Space All Around the
Chimney Connector
ST1010
Figure 9 -
Hollow wall pass-thru
Floor protection
A tremendous amount of heat radiates from the bottom plate
of your stove. The floor area directly under and around the
stove will require protection from radiant heat as well as from
stray sparks or embers that may escape the firebox.
Spark, ember and thermal protection must be provided by
a floor protector constructed with noncombustible material
as specified.
Special protection for the floor beneath the stove must be
provided. Use an approved 1” (25 mm) noncombustible
hearth pad with K = 0.84 BTU/in ft
2
hr °F or an equivalent
material with an R-value of at least 1.19. (Refer to “How
to Determine if Alternate Floor Protection Materials are
Acceptable” section) The floor protector may be covered
with a decorative noncombustible material if desired. Do
not obstruct the space under the heater.
Protection requirements vary somewhat between the
United States and Canada as follows:
U.S. Installations: The floor protector is required under the
stove and must extend at least 16” from the front of the
stove, and at least 8” from the sides and rear.
Figure 10
In Canada: a noncombustible floor protector is required
under the heater also. The floor protector must extend 18”
(457 mm) from the front of the stove, and at least 8” (203
mm) from the sides and rear.
Figure 10
ST1059
SSW20 floor protection
A
B
C
D
D
D
E
E
ST1059
Figure 10 -
Installation on a Combustible Floor
US
Canada
A.
41”
41”
(1016 mm)
B.
45”
47”
(1194 mm)
C.
16”
18”
(457 mm)
D.
8”
8”
(203 mm)
E.
2”
2”
(51 mm)
how to determine if Alternate Floor protection Materi-
als are Acceptable
All floor protection must be noncombustible (i.e. metals,
brick, stone, mineral fiber boards, etc.). Any organic materi-
als (i.e. plastics, wood paper products, etc.) are combus-
tible and must not be used. The floor protection specified
includes some form of thermal designation such as R-value
(thermal resistance) or k-factor (thermal conductivity).
procedure:
1. Convert specifications to R-value:
i. R-value given - no conversion needed.
ii. k-factor is given with a required thickness (T) in
inches:
iii. K-factor is given with a required thickness (T) in
inches:
iv. r-factor is given with a required thickness (T) in
inches: R = r x T
2. Determine the R-value of the proposed alternate floor
protector:
i. Use the formula in Step 1 to convert values not ex-
pressed as R.
ii. For multiple layers, add R-values of each layer to
determine overall R-value.
