Instruction

21
CHIMNEY MAINTENANCE
1. Creosote and Soot: When wood is burned
slowly, it produces tar and other organic vapors,
which combine with expelled moisture to produce
creosote. The creosote vapors condense in the
relatively cool chimney ue of a slow-burning re.
As a result, creosote residue accumulates on the
ue lining. When ignited, this creosote makes an
extremely hot re.
2. Access: Chimneys must be installed so that
access is provided for inspection and cleaning.
3. When to Clean: The chimney should be
inspected at least once every month during the
heating season to determine if creosote or soot
has built up. Check spark arrestor screens at
least every 2 to 4 weeks. If creosote or soot has
accumulated, it should be cleaned to reduce the
risk of chimney re.
4. How to Clean: Have your chimney cleaned
by a professional chimney sweep if you have
doubts about your ability to clean it. Use a
plastic, wood, or steel brush. Do not use a brush
that will scratch the stainless steel liner of your
chimney. Scrub the spark arrestor with a wire
brush. To remove the Spark Arrestor Assembly
for cleaning, loosen the three bolts that attach it
without fully removing them, then twist the spark
arrestor assembly counter-clockwise while lifting
upwards. To reinstall (Fig. 26), lower the spark
arrestor assembly onto the three loosened bolts
(without aligning the slots and bolts), then twist
the spark arrestor assembly clockwise until the
slots drop onto the bolts. Ensure that the bolts
are fully engaged in the slots, then tighten the
bolts to secure the spark arrestor assembly.
The Tee Cleanout Cap can be removed once the
retaining bar has been unbolted. Remember to
replace the Tee Cap and retaining bar when you
are nished cleaning the chimney.
5. Coal: To reduce corrosion in chimneys where
coal is burned, clean the chimney thoroughly
within 48 hours of shutting down the appliance
for the season.
6. Chemical Cleaners: Use chemical cleaners
only as a last resort, and use only those which
the manufacturer specically warrants as being
noncorrosive to the chimney. DuraVent will
assume no liability for damage resulting from the
use of chemical cleaners.
7. In Case of Fire: If a ue re occurs, close
all appliance air inlets, and call your Fire
Department. Do not use the chimney again, until
it has been inspected for possible damage.
8. Painting: As an option, you can coat all
exterior metal parts, with the exception of the
Chimney Cap, with high temperature, rust proof
paint. Wash the metal with a vinegar and water
solution before painting. Painting the chimney
will help to increase chimney life.
9. Creosote Formation: DuraVent assumes
no liability for structural damage or roof
contamination as the result of creosote
formation. It is the owner’s responsibility
to comply with inspection and cleaning
requirements as described in these instructions,
and those of the appliance manufacturer.
SPARK ARRESTOR
ASSEMBLY
BOLT
SLOT
FULLY ENGAGED
0.5”
Figure 26