NORSK KLEBER Kube 3, Инструкция по установке, сборке и эксплуатации

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6
Design Considerations
When selecting a chimney type and the location for
the chimney in the house, keep this in mind: It is the
chimney that makes the stove work - not the stove that
makes the chimney work. This is because a chimney
actually creates a suction, called “draft” which pulls air
through the stove.
Several factors affect draft: chimney height, cross-
sectional area (size), and temperature of the chimney,
as well as the proximity of surrounding trees or
buildings.
A short exterior masonry chimney will give the
poorest performance because it will be difficult to
warm the flue and sustain the temperatures necessary
to maintain draft strength. In extremely cold climates,
it may be necessary to reline the chimney or extend the
height to help establish draft.
A tall, interior masonry chimney is easier to keep
warm and will perform the best under a variety of
weather and environmental conditions.
The following guidelines give the necessary chimney
requirements based on the national code (ANSI-NFPA
211 for the US. And CSA CAN-B365 for Canada).
However, many local codes differ from the national
code to take into account climate, altitude, or other
factors. Your local building inspector is the final
approving authority.
Masonry Chimneys
Follow these guidelines when installing the stove into a
masonry stove:
• The masonry chimney must have a fireclay liner or
equivalent, with a minimum thickness of 5/8” (14
mm) and must be installed with refractory mortar.
There must be at least 1/2” (12.7 mm) air space
between the flue liner and chimney wall.
• The fireclay flue liner must have a nominal size of
8” X 8” (20 cm x 20 cm), and should not be larger
than 8”X 12” (20 cm x 30 cm). A round fireclay
liner must have a minimum inside diameter of 6”
(15 cm) and maximum inside diameter of 8” (20
cm). A larger chimney should be relined with an
appropriate code approved liner.
• Brick or modular block must be a minimum of 4”
(10 cm) nominal thickness. Stone construction
must be at least 12” (30 cm) thick.
• A newly-built chimney must conform to local
codes, or, in their absence, must comply with na-
tional regulations.
• An existing chimney must be inspected by a pro-
fessional, licensed chimney sweep, fire official, or
code officer to ensure that the chimney is in proper
working order. Any repairs must be completed
before installing the stove.
• No other appliance may be vented into the same
flue.
• An airtight clean-out door should be located at the
base of the chimney.
Chimney Height
• The chimney must be at least 15 feet high (4.57
m). The chimney must also be at least 3 feet (92
cm) higher than the highest point where it passes
through the roof and at least 2 feet (61 cm) higher
than the highest part of the roof or structure that is
within 10 feet (3.05 m) of the chimney, measured
horizontally. See
Fig 2
.
• Chimneys shorter than 15 feet may not provide ad-
equate draft. Inadequate draft can result in smoke
spillage when loading the stove, or when the door
is open. Poor draft can also cause back puffing (ig-
nition of gas build-up inside the firebox) and slug-
gish performance. The minimum height does not,
in itself, guarantee proper chimney performance.
Optimum draft force should be in the .05 - .10 in.
w.c. range measured by a Magnehelic gauge. Draft
at .07 w.c. is ideal.
• Excessive chimney height can promote over-strong
draft resulting in high stove temperatures and short
burn times. Excessive draft can be corrected by in-
stalling a butterfly damper. Your dealer is an expert
resource to consult regarding draft issues or other
performance-related questions.