Instruction

15
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 on the spark arrestor, it should be
cleaned to reduce the risk of chimney re.
4. How to Clean: Have your chimney cleaned by
a professional Certied 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 it counter-
clockwise while lifting upwards. To reinstall (Fig.
19), 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.
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 that
the manufacturer specically warrants as being
non-corrosive 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 possible air inlets, and call your Fire
Department. Do not use the chimney again until
it has been inspected by a Certied Chimney
Sweep for possible damage.
8. Painting: As an option, you can coat all
exterior metal parts, with the exception of the
top portion of the Chimney Cap, with high
temperature, rust proof paint. Wash the metal
with a vinegar and water solution to remove
any oil residue 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 19