Legacy Stoves TLC 2000 Installation And Operating Manual - page 19
Venting
8.0 The Chimney System
8.1 SOOT AND CREOSOTE FORMATION AND REMOVAL
When wood is burned slowly (during start up) it produces tar and other organic vapors, which combine with expelled moisture to form
soot or creosote.
e soot and creosote vapors condense in the relatively cool chimney Lue of a slow burning 2re. As a result, soot or
creosote residue accumulates on the Lue lining. When ignited, this soot or creosote can result in an extremely hot 2re.
e chimney connector and chimney should be inspected at least once every two months during the heating season to determine if a
soot or creosote build-up has occurred. If soot or creosote has accumulated (3 mm or more) it should be removed to reduce the risk of a
chimney 2re. Checking your chimney and chimney connector more frequently, especially while you are ge-ing used to your stove, is
recommended. To inspect this system, let the stove cool. Using a Lashlight and mirror, check the interior of the chimney connector, and
the chimney itself.
To clean deposits from the surface of the connector, use a stiS wire brush after dismantling the connector assembly. To clean the
chimney, use a specially designed brush sized to 2t your particular Lue opening, or call an established chimney cleaning service. At the
end of the heating season, perform a thorough examination of your chimney system, and have it repaired if necessary.
8.2 DRAFT
Draft is widely misunderstood. It is important that you, the stove operator, realize that draft is a variable eSect, not a given quantity.
Stoves and chimneys do not have draft, yet draft is the key to your stove’s performance.
Draft is a force, produced by an operating stove and the chimney to which it is a-ached. It is created by hot gases rising up the
chimney, creating a pressure diSerence between the inside of your home and the outside air. It continually moves fresh combustion air
into the stove, and hot exhaust gases out of the stove; without this constant Low, the 2re will go out.
Other factors, such as barometric pressure, winds, the airtightness of the home, the total inside chimney volume, chimney height and
the presence of venting devices such as exhaust fans also play a role in maintaining an adequate draft. In some cases, a window may
need to be left open, or some other source of fresh air provided, to keep the appliance operating properly. Low barometric pressures,
super insulated homes and exhaust fans can reduce draft; winds can play havoc with draft; and too large or too small a chimney volume
can cause reduced draft due to the excessive cooling or not enough room to vent exhaust gases quickly.
Some signs of inadequate draft are smoking, odor, diEculty in maintaining the 2re, and low heat output. Overdraft can be caused by a
very tall chimney even if it is the recommended size, and can cause over 2ring of your stove. Signs of an overdraft include rapid fuel
consumption, inability to slow the 2re, and parts of the stove or chimney connector glowing red. It is important that you follow the
chimney guidelines in this manual, including size, type, and height to avoid draft problems.
When installed and operated according to this manual, the TLC 2000 will produce enough hot gases to keep the chimney warm so that
adequate draft is maintained throughout the burn cycle. See later in this section for installation of a barometric damper to limit
maximum draft.
8.3 CHIMNEY CONNECTORS
In general, following these guidelines will ensure compliance with all national and provincial codes; prior to beginning your
installation, check with your local building code oEcial to check on additional local regulations which may inLuence the design and
placement of your venting system.
e Legacy TLC 2000 may be installed with 24 MSG, 6 inch diameter (150mm) chimney connector pipe. Size of the connector should
correspond to the size of the Lue collar opening. Do not use makeshift compromises. No part of the chimney connector may pass
through an a-ic or roof space, closet or other concealed space, or through a Loor or ceiling. Whenever possible, avoid passing the
connector through a combustible wall; if you must, use an approved wall pass-through, described later in this section.
Assemble the connector beginning at the Lue collar, with the crimped ends pointing towards the stove (to keep debris and creosote
Lakes inside the system). Each joint, including the one to the stove’s Lue collar and the one to the chimney itself should be secured with
at least three sheet metal screws. Screws may be a maximum of 3 inches apart. A 1-1/4" (30 mm) overlap is required at each joint,
including the Lue collar a-achment. No more than two 90 degree elbows should be used, and the total length of connector should not
exceed 10 feet (3 m). All horizontal runs of connector must have a minimum upward slope of 1/4"(6 mm) per foot (20 mm per meter).
8.4 WALL PASS-THROUGHS
Occasionally it is necessary to pass the chimney connector through a combustible wall to reach the chimney. Depending on your local
building codes, and the pertinent provincial or national codes, there are several choices for accomplishing this safely. Before beginning
your installation, contact local oEcials, and also the chimney connector and chimney manufacturer for speci2c requirements.
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MAINTAIN CHIMNEY AND CHIMNEY CONNECTORS, KEEP CLEAN AND IN GOOD CONDITION!