10
Figure 3
Illustration showing minimum heights required,
depending on the locaton of chimney
The chimney ‘drives’ the system by producing the draft that
draws in combustion air and exhausts smoke and gases to
outdoors.
When installing a new woodburning system or upgrading an
existing one, give as much attention to the chimney as you do
to the appliance that it serves.
The Oval and Sweetheart can be installed in a masonry
chimney which is in compliance with the appropriate standard
or a prefabricated chimney approved to
ULC Standard S629
in Canada and UL 103HT in the U.S.
Follow the chimney manufacturer’s directions for installation.
We recommend that prior to installing your stove into a
masonry chimney, you have the chimney inspected by a
qualified mason. An unlined masonry chimney should not be
used without the installation of a liner.
The chimney and installation will have to be inspected by your
local building inspector.
Recommended Chimney Clearances
The chimney must:
(see figure 3 below)
• extend at least 14 ft. above the collar of the stove;
• extend at least 3 ft. above the point where it passes
through the roof;
• be at least 2 ft. above anything within a 10 ft. radius of the
top of the pipe.
Good draft in a cold chimney should be between 0.01" and
0.15" “water column” (your dealer may be able to check this
for you).
24"
(600mm)
10'
(3 metres)
36"
(900 mm)
Clearance Reductions
There are many alternate decorative methods to reduce
clearances to combustible materials. See your dealer, or local
fire or building official to ensure the appropriate standards are
being met with these alternatives. In Canada, refer to the
Installation Code for Solid Fuel Appliances and
Equipment. CAN3-B365-M84. In the U.S., refer to the National
Fire Protection Association Standard 211,
Floor Protection
When installing this cookstove on a combustible floor, a
noncombustible floor protector is required under the stove. The
floor pad is to protect the floor from hot embers that may fall
from the loading door. The floor pad must be continous
noncombustible surface. Floor tiles with grouting between
them or sheet metal pads are acceptable. The pad must
extend 450 mm (18") beyond any side with a loading door and
200 mm (8") beyond the other sides and rear. (See page 7
"Oval Rough-in Dimension Diagram" or page 8 "SweetHeart
Rough-in Dimension Diagram".) Floor pads may be fabricated
from non-combustible materials. (see page 26 "Formula for
Equivalent Hearth Extension")
Chimneys and Draft
The chimney is the most important element of successful
stove operation. (see also page 23 "Flue Pipes")
Performance of your woodburning system depends more
on the chimney than on any other single component.
