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CLEARANCES AND APPLICATIONS
Security Chimney's Secure Pellet is listed by
Underwriters Laboratories as vent for listed
appliances that burn oil, pellet, corn, and other
biofuels. Secure Pellet is also listed as a
masonry reliner with the minimum clearance 0"
from vent to masonry, and 0" clearance from
the masonry to nearby combustibles. Never fill
any required clearance space with insulation
or any other materials (except insulation
explicitly approved by Security as noted
below). Combustible materials include (but
are not limited to) lumber, plywood, sheetrock,
plaster and lath, furniture, curtains, electrical
wiring, and building insulation except that
noted below.
In the United States and Canada the minimum
clearance to combustibles from Secure
Pellet is 1" for oil, pellet, corn or other biofuel
applications.
NON-COMBUSTIBLE INSULATION
Security Chimney approves the field
application of non-combustilble insulation
within the clearance to combustible distance
(in wall thimbles or support boxes only) if/when
desirable. Approved insulation must be listed
/ compliant with ASTM E136/ULC S114 as
Non-Combustible, have a melting temperature
above 2000°F/1100°C, be water resistant with
low moisture absorbtion and be acceptable to
the AHJ. Materials would include those made
from stone (aka "rockwool" or "mineral wool"
insulations). NOTE- Fiberglass insulation is
NOT approved!
VENT LISTING
Secure Pellet is listed by Underwriters
Laboratories to UL 641 Type L Low
Temperature Venting Systems, ULC S609
4
Low Temperature Vents, and ULC/ORD-C441
Standard for Pellet Vents .
INSTALLATION NOTES
Proper planning for your Secure Pellet
installation will result in greater safety,
efficiency, and convenience, saving both time
and money. Use only authorized Security
Chimney and DuraVent listed parts. Do not
install damaged parts.
1. WARNING: When passing through ceilings
and walls, make sure all combustible materials
and combustible building insulation products
are a minimum of 1" from the vent pipe
2. For horizontal terminations, make sure
NFPA 211 rules are followed for minimum
distance from windows and openings.
3. Do not mix and match with other
manufacturer's products or improvised
solutions.
4. Practice good workmanship. Sloppy
work could jeopardize your Secure Pellet
installation.
5. Never use a vent with an inside diameter
that is smaller than the appliance flue outlet.
6. Multistory: Where Secure Pellet passes
through the ceiling, use Security Chimney's
Firestop/Support assembly.
7. Vent placement: When deciding the
location of your stove and vent, try to minimize
the alteration and reframing of structural
components of the building.
8. Sections of pipe are connected to each
other by pushing them firmly together and
twisting. Screws are not required. However, if
screws are desired, use 1/4"-long sheet metal
screws. Important! Do not penetrate the inner
liner with screws.
9. Never install single-wall pipe to freestanding
pellet stoves. Single-wall pipe may be
connected to a fireplace insert, provided it
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