7
Vermont Castings • Intrepid II Installation & Operating Manual_R48 • 11/17
3-90-2000966
Figure 3
- The 2’-3’-10’ Chimney Rule.
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
AC617
RLTSKC8
2/11/98
Reference Point
Chimney Size:
An Intrepid II is approved for venting into a masonry chimney
with a maximum flue size of 8" x 8" (203 x 203 mm), and into
a round flue size of 6" (150 mm).
It may not be vented into larger chimneys without a liner
to reduce the effective flue size to 6"(150 mm) diameter.
Larger chimneys must have their flues relined for proper
stove performance.
Accessories to make the connection between stainless steel
chimney liners and your Intrepid II are available through your
local dealer.
Chimney Connector Guidelines:
Chimney connector is the double-wall or single-wall pipe
that connects the stove to the chimney. The chimney is a
masonry or prefabricated structure that encloses the flue.
Chimney connectors are used only to make the connection
from the stove to the chimney.
Double-wall chimney connectors must be tested and listed for
use with solid-fuel burning appliances. Single-wall chimney
connectors should be made of 24 gauge or heavier steel, and
should be 6" (150 mm) in diameter. Do not use galvanized
connector; it cannot withstand the high temperatures that
can be reached by smoke and gases, and may release toxic
fumes under high heat.
If possible, do not pass the chimney connector through a
combustible wall or ceiling. If passage through a combustible
wall is unavoidable, refer to the section following on Wall
Pass-Throughs. Do not pass the chimney connector through
an attic, a closet, or any similar concealed space. The whole
connector should be exposed and accessible for inspection
and cleaning.
In horizontal runs of single-wall chimney connector without
protective shields, maintain a clearance of at least 26" (660
mm) from the ceiling. For information on reduced clearances
using shields on single-wall chimney connector or using
double-wall connectors.
Keep the horizontal run of chimney connector as short
and direct as possible, with no more than two 90° turns.
Slope horizontal runs of connector upward 1/4" per foot (20
mm per m) going from the stove toward the chimney. The
recommended maximum length of a horizontal run is 3’ (914
mm). The recommended total length of chimney connector
is 8’ (2.4 m).
In cathedral ceiling installations, extend the prefabricated
chimney down to within 8’ (2.4 m) of the stove.
SAFETY NOTE: ALWAYS WEAR GLOVES AND
PROTECTIVE EYE WEAR WHEN DRILLING, CUTTING
OR JOINING SECTIONS OF CHIMNEY CONNECTOR.
Masonry Chimneys:
An inspection of the chimney must confirm that it has a lining.
Do not use an unlined chimney. The chimney should have no
cracks, loose mortar, other signs of deterioration, or blockage.
Repair any defects before using the chimney with your stove.
Seal any unused openings in an existing masonry chimney
with masonry to the thickness of the chimney wall, and
repair the chimney liner. Openings sealed with pie plates or
wallpaper are a hazard; seal them with mortar or refractory
cement. In the event of a chimney fire, flames and smoke
may be forced out of these unused thimbles.
The chimney should be thoroughly cleaned before use.
A newly-built masonry chimney must conform to the
standards of your local building code or, in the absence of a
local code, to a recognized national code. Masonry chimneys
must be lined, either with code-approved masonry or pre-cast
refractory tiles, stainless steel pipe, or a code-approved,
“poured-in-place” liner. The chimney’s clean-out door must
seal tightly.
Prefabricated Chimneys:
A prefabricated metal chimney must be one tested and
listed for use with solid-fuel burning appliances to the High
Temperature (650°C) Standard ULC S-629 for Canada.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
If you use an existing masonry chimney, it must be inspected
to ensure safe condition before the stove is installed. Your
local professional chimney sweep, building inspector, or fire
department official will be able to inspect the chimney or
provide a referral to someone who can.
The chimney must extend at least 3’ (914 mm) above the
highest point where it passes through a roof, and at least 2’
(610 mm) higher than any portion of a building within 10’ (3
m). (Figure 3)
For proper draft and good performance, any chimney used
with an Intrepid II should extend at least 16’ (5 m) above the
flue collar of the stove.
