25
4.
THE CHIMNEY
4.1
CHIMNEY INSTALLATION NOTES
1.
If possible, install an interior chimney as it will provide better performance. In areas with
continuous temperatures below 18°C (0°F), the use of an exterior chimney increases the
likelihood of operating problems such as low draft, high rate of creosoting, and poor start-up
characteristics. Exterior chimneys are also prone to down-drafting and flow reversal.
Installations which are located on lower floors in the house, such as in a basement, in
combination with an outside chimney, are especially prone to flow reversal.
NOTE : In areas where winter temperatures are below freezing, the air cooled chimney may
produce condensation. This condensation may corrode the top of the fireplace and is not
covered under warranty. For optimum performance of your fireplace, Security Chimneys
International recommends the use of ASHT+ or chimneys.
2.
The Security fireplace model LE LAVAL is listed only with Security Chimneys International
Ltd 10" dia. chimney systems model Secure Temp
ASHT+
/ Nova Temp
or AC.
3.
A chimney venting a fireplace shall not vent any other appliance.
4.
The minimum chimney height is 15 ft. (4.6 m) excluding the fireplace.
5.
All chimney installations must include at least one support in order to be able to take any
lateral load. The maximum chimney length that can be supported by the fireplace is 12 ft.
(3.7 m) for Secure Temp
ASHT+
/ Nova Temp
and 26 ft. (8m) for AC chimney. In
altitude, add 18" (450 mm) to the chimney for every 2000 feet (600 m) above sea level.
6.
The chimney must extend at least 3 ft. (915 mm) above its point of contact with the roof and
at least 2 ft. (610 mm) higher than any wall, roof or building within 10 ft. (3m) of it (Figure
26).
7.
If the chimney extends higher than 5 ft.
(1500 mm) above its point of contact with
the roof, it must be secured using a roof
brace.
8.
A rain cap must be installed on top of the
chimney. Failure to install a rain cap may
cause corrosion problems.
9.
Cut and frame square holes in all floors,
ceilings, and roof that the chimney will go
through to provide a 2" (50 mm) clearance
between the chimney and any combustible
materials. Do not fill this 2" space with
insulation or any other combustible
material.
10.
Portions of the chimney which may extend
through accessible spaces must be enclosed
to avoid contact with combustible materials
or damage the chimney.
Figure 26
Summary of Contents for LE LAVAL
Page 32: ...30 Table 4 ...