Jotul F 500 - Handbuch (Seite 5)

5
• A newly-built chimney must conform to local codes and in
their absence must recognize national regulations.W h e n
using an existing chimney, it must be inspected by a licensed
professional chimney sweep, fire official, or code officer, to
ensure that the chimney is in proper working order.
• No other appliance can be vented into the same flue.
• An airtight clean-out door should be located at the base of
the chimney.
Prefabricated Chimneys
If a prefabricated metal chimney is to be used it must be a
chimney type that is tested and listed for use with solid fuel
burning appliances.
That means a chimney that is tested to the following:
High Temperature (HT) Chimney Standard UL 103 for the U.S.
and High Temperature Standard ULC S-629 for Canada.
The manufacturer’s installation instructions must be followed
precisely. Always maintain the proper clearance to combustibles
as established by the pipe manufacturer. This clearance is usually
a minimum of 2” (56mm), although it may vary by
manufacturer or for certain chimney components.
Chimney Height
Whether a masonry chimney or prefabricated metal chimney
is used it must be the required height above the roof line.
The requirement is:
The chimney must be at least 3 feet higher than the highest
point where it passes through the roof and at least 2 feet higher
than the highest part of the roof or structure that is within 10
feet of the chimney, measured horizontally. See figure 3, page
13.
Chimneys shorter than 14 feet may not provide adequate draft.
This could result in smoke spilling into the room from the
stove when loading the stove, or when the door is open. In
addition, inadequate draft can cause back puffing, which is a
build up of gases inside the firebox.
Other times, chimney height can create excessive draft which
can cause high stove temperatures and short burn times.
Excessive drafts can be corrected by installing a butterfly
damper. If you suspect you have a draft problem, consult your
dealer.
Wall Pass-throughs
When your installation unavoidably requires the chimney
connector to pass through a combustible wall to reach the
chimney, always consult your local building officials, and be
sure any materials to be used have been tested and listed for
wall pass-throughs.
In the U.S.
The National Fire Protection Association’s publication, NFPA 211,
Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning
Appliances permits four methods for passing through a
combustible wall. Before proceeding with any method be sure
to consult with your local building officials to discuss any local
code requirements.
Common Method:
•
When passing through a combustible wall to a masonry
chimney this method requires the removal of all
combustible materials from at least 12” (310mm) around
the chimney connectors proposed location. With a 6”
(157mm)round liner the minimum area required would be
31” x 31” (792x792mm)square.
• The space is then filled with at least 12” (310mm)of brick
around a fireclay liner. Remember, the liner must be ASTM
C35 or equivalent, with a minimum wall thickness of 5/8”
(16mm).
• It is important to remember to locate the pass-through at
least 18”(457mm) from the ceiling for proper clearance to
combustibles.
• It will be necessary to cut wall studs, install headers, and
construct a sill frame to maintain the proper dimensions
and to support the weight of the brick.
• The bricks must be solid brick with a minimum of
• 3 1/4 “ (83mm) thick (4” (106mm) nominal).
• Refractory mortar must be used at the junction of the
chimney and the pass-through liner. The pass-through liner
must not penetrate the chimney liner beyond the inner
surface of the chimney liner. Use extreme care when
constructing the hole in the chimney liner, the tiles can
shatter easily. See figure 4, page 13.
In Canada
In Canada the standard has been established by the Canadian
Standard Association. The installation must conform to CAN/
CSA-B365, Installation Code for Solid Fuel Burning Appliances
and Equipment. Before proceeding be sure to consult your
local building inspector.
Common Method:
This method requires the removal of all combustible materials
from at least 18” (457mm) around the chimney connector’s
proposed location. With a 6” (157mm) round liner the minimum
area required would be 43” x 43” square (1092x1092mm).
It is important to remember to locate the pass-through at least
18” (457mm) from the ceiling to maintain the proper clearance
to combustibles.
The space that is cleared of combustible materials must then
remain empty. Sheet metal panels can then be used to cover
the area. However, when using a panel on both sides of the
wall each cover must be installed on noncombustible spacers
at least 1”(25,4mm) from the wall. If one panel of sheet metal
is to be used it may be installed flush to the wall.
See section 5.3.1 and 5.3.2 of CAN/CSA - B365-M91.
Consult your local building inspector, authorized Jøtul Dealer,
NFPA 211 in the U.S. or CAN/CSA-B635 in Canada for other
approved wall pass-through methods.
USA/CANADA