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B. Hearth Protection Requirements
EMBER PROTECTION: It is necessary to install a Type I
floor protector.
Floor protector must be non-combustible material,
extending beneath appliance with a minimum of 16 inches
(406mm) in front of glass and 8 inches (203mm) to both
sides of the fuel loading door. Open the door and measure
8 inches (203mm) from the side edge of the opening in the
face of the appliance. *See exception.
USA, minimum flat wall hearth
pad dimensions
29-5/8 in
29-5/8 in
minimum
minimum
Fuel loading door
8 in
8 in
16 in
16 in
from fuel door
from fuel door
opening
opening
13-5/8 in
13-5/8 in
minimum
minimum
Figure 9.1
*Canada, flat wall hearth pad
dimensions with double wall
horizontal venting
1006mm
minimum
203mm
203mm
457mm
from fuel door
opening
600mm
600mm
minimum
minimum
Figure 9.2
**this dimension will vary depending
installation.
August 13, 2018
Corner hearth pad dimensions with single wall pipe
39 in
minimum
8 in
8 in
47-3/4 in
USA
Figure 9.3
Must extend 51mm
Must extend 51mm
beyond each side of
beyond each side of
Corner hearth pad dimensions with double wall pipe
pipe (shaded area) to
pipe (shaded area) to
the wall thimble.
the wall thimble.
1080mm
minimum
46-3/4 in
USA
Figure 9.4
In Canada, similar floor protection must be provided 18
inches (457mm) in front and 8 inches (203mm) from the
sides and rear of the appliance unless the hearth pad is
placed against the wall (Figure 9.2). Then the clearance
may be reduced using double wall pipe and the Clearance
to Combustibles table listed on page 10.
*Exception: Non-combustible floor protector must extend
beneath the flue pipe when installed with horizontal venting
and extend 2 inches (51mm) beyond each side; See
Figure 9.2
Fire Risk.
Hearth pads must be installed exactly as specified.
High temperatures or hot embers may ignite
concealed combustibles.
60-5/8 in
38-1/8 in
13-5/8 in
59-1/4 in
37-1/8 in
13-5/8 in
7039-174K
WARNING
1338mm
CANADA
Figure 9.5
1312mm
CANADA
Figure 9.6
Discovery I
1592mm
914mm
600mm
1556mm
888mm
600mm
9
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