Vermont Casting 1450 - Manual (Page 8)

8
Encore 1450 Non-Catalytic Woodburning Stove
30002425
• The fireplace damper must be sealed to prevent
room air from escaping up the flue. However, it must be
possible to re-open the damper to inspect or clean the
chimney.
* Check These
Clearances
ST244
Plymouth
fplc over mantel
12/99
*
*
Chimney
Connector Shields
Mantel
Seal Damper
to Air Flow
ST244
Fig. 8 In this installation, the chimney connector is attached
to the chimney above the fireplace opening.
Through the Fireplace
If your fireplace opening height is at least 26¹⁄₂"
(675mm), you may install an Encore through the open-
ing using a “positive connection” kit, available from your
local dealer. These positive connection kits ensure a
tight fit between the stove flue collar and the chimney
flue. (Fig. 9)
Fireplace installations, whether connected to the flue
above or through the fireplace opening, have special
clearance requirements to adjacent trim and the mantel.
You’ll find the required safe clearances for Encore fire-
place installations on Page 12 and Figure 16.
Floor protection requirements also apply to fireplace
installations. This information is on Page 10.
Wall Pass-Throughs
Whenever possible, design your installation so the con-
nector does not pass through a combustible wall. If you
are considering a wall pass-through in your installation,
check with your building inspector before you begin.
Also, check with the chimney connector manufacturer
for any specific requirements.
Accessories are available for use as wall pass-
throughs. If using one of these, make sure it has been
tested and listed for use as a wall pass-through.
ST245
fireplace
flex connector
12/99
Flexible Connector
Mantel Shield
Fireplace Adapter
Kit “Positive Con-
nection”
ST245
Fig. 9 In this installation, the chimney connector enters the
firepalce opening and then connects to the chimney.
In the United States, the National Fire Protection As-
sociation (NFPA) has established guidelines for passing
chimney connectors through combustible walls. Many
building code inspectors follow these guidelines when
approving installations.
Figure 10 shows one NFPA-recommended method.
All combustible material in the wall is cut away from
the single-wall connector to provide the required 12”
(305mm) clearance. Any material used to close up the
opening must be noncombustible.
Three other methods are also approved by the NFPA:
• Using a section of double-wall chimney with a 9”
(229mm) clearance to combustibles.
• Placing a section of chimney connector inside a
ventilated thimble, which in turn is separated from com-
bustibles by 6” (152mm) of fiberglass insulating mate-
rial.
• Placing a section of chimney connector inside a
section of 9” (230mm) diameter, solid-insulated, factory-
built chimney, with 2” (50mm) of air space between the
chimney section and combustibles.
In Canada, The Canadian Standards Association has
established different guidelines. Figure 10 shows one
method, in which all combustible material in the wall is
cut away to provide the required 18” (457mm) clear-
ance for the connector. The resulting space must re-
main empty. A flush-mounted sheet metal cover may be
used on one side only. If covers must be used on both
sides, each cover must be mounted on noncombustible
spacers at least 1” (25mm) clear of the wall.