5100-I ACT WOOD INSERT
Page 1
September 1, 2008
R
438-0380D
5
Chimney Requirements
A. Venting Components
Chimney Connector:
It is also known as flue pipe or stove pipe. It must be 6
inches (152mm) minimum diameter stainless steel connector
pipe.
Chimney
:
The chimney can be new or existing, masonry or prefabricated
and must meet the following minimum requirements as
specified in Section 5B below.
NOTE:
In Canada, installations into factory-built zero clearance
fireplaces are
NOT
allowed.
B. Chimney Systems
Prefabricated Metal Chimney
• Must be a 6 inch (152mm) inside diameter of high
temperature chimney listed to UL 10 HT (100
o
F) or
ULC S68.
• Must use components required by the manufacturer for
installation.
• Must maintain clearances required by the manufacturer
for installation.
• Refer to manufacturers instructions for installation
Approved Masonry Chimney:
• Must meet minimum standards of NFPA 11.
• Must have at least 5/8” (16mm) fireclay lining joined with
refractory cement. (Installations into a clay flue without
a stainless steel liner may reduce draw which affects
performance, will cause the glass to darken and produce
excessive creosote).
• Cross-sectional area should be no more than 3 times the
cross-sectional area of the flue collar of the insert. (8 sq
inch flue area x inches = 8 square inches maximum
chimney area).
• Should be lined with a 6 inch (152mm) stainless steel
flue liner to improve performance and reduce creosote
build-up.
• No dilution air is allowed to enter the chimney.
1. Seal damper area of chimney around chimney
connector, or seal insert against the face of the
fireplace.
2. Both methods must be removable and replaceable
for cleaning and re-installation.
• When possible, install an airtight clean-out door to the
rear of the smoke shelf.
Inspections
Existing chimneys should be inspected and cleaned by a
qualified professional prior to installation. The chimney
must not have cracks, loose mortar or other signs of dete
-
rioration and blockage. Hearth & Home recommends a
NFI or CSIA certified professional or a technician, under
the direction of a certified professional, conduct a Level II
inspection per NFPA 11.
Larger Chimneys
It is recommended that chimneys with larger diameters
than 6 inches (15mm) be relined. An oversized flue can
affect draft and impair performance and will allow increased
build-up of creosote.
Chimney Height / Rise and Run
This product was designed for and tested on a 6 inch
(152mm) chimney, 14 to 16 feet (428-488cm) high, measured
from the base of the appliance. The further your stack height
or diameter varies from this configuration, the possibility of
performance problems exists.
Chimney height may need to be increased by 2 - 3% per
each 1000 feet above sea level. It is not recommended to
use offsets or elbows at altitudes above 4000 feet above sea
level or when there are other factors that affect flue draft.
Fire Hazard
Inspection of Chimney:
• Chimney must be in good condition.
• Meets minimum standard of NFPA 11
• Factory-built chimney must be 6” (15mm)
UL10 HT.
WARNING
Minimum 1/2” (25mm) Air Space,
Maximum 4” (102mm) Air Space
Airtight Clean-
Out Door
Minimum 5/8” (16mm)
Fireclay Flue Liner
Non-Water Soluble
Refractory Mortar
4“ (102mm) Masonry
or Modular Block Wall
(Nominal)
12” (305mm) if Rubble
Stone Wall (Nominal)
Footing (depth and size of footing
accordance with local building code)
Figure 14.1
