Vermont Casting 1450 - Manual (Page 12)

12
Encore 1450 Non-Catalytic Woodburning Stove
30002425
ST248
wall shield construction
12/14/99 djt
Air Flow
Stud Wall
Framing
Wall Shield
Noncombustible
Spacer and
Fasteners
Drywall
Airflow
Metal
Screening
Wall
Shield
Metal Lathe or
Noncombustible
Spacers
ST248
Fig. 14 Approved wall shield construction.
1" (25mm)
1/4" (6mm)
ST501
mantel and
trim shield
11/10/00 djt
ST501
Fig. 15 A custom formed mantel shield.
Air must be able to flow between the wall and the
shield. At least 50% of the bottom 1" (25 mm) of the
shield should be open and the shield must be open at
the top. Use metal screening, as in Figure 14, to keep
stray objects from falling behind the shield.
The shield for a top-exit stove must extend 10"
(254 mm) above the top of the stove; for a rear exit
configuration, the shield must be 36” (914 mm) high.
The shield for the chimney connector must be 30” (762
mm) wide, centered behind the pipe; for installations
that use an approved prefabricated chimney to pass
through the ceiling, the chimney connector shield must
stop 1” (25 mm) below the ceiling.
Chimney Connector Heat Shields
Chimney Connector Heat Shields should be used when
it is necessary to protect nearby combustibles from the
heat of the connector. The ceiling above horizontal runs
of chimney connector must be protected as well if the
clearance is inadequate.
In top-exiting installations, the connector shield must
extend to a point exactly 36” (914 mm) above the flue
collar or to an elbow in the connector, whichever is less.
If the top-exiting connector extends to the ceiling where
it connects with a prefabricated insulated metal chim-
ney, an additional ceiling heat shield must be installed
that is 24” (610 mm) in diameter and that extends 1” (25
mm) below the ceiling. The ceiling shield must be con-
structed of 24 gauge or heavier sheet metal, and must
be centered on the chimney.
Fireplace Mantel and Trim Shields
A fireplace installation requires special clearance be-
tween the side of the stove and the right and left walls,
between the side of the stove and the decorative side
trim on the fireplace face, and between the top of the
stove and the mantel.
Noncombustible shields installed 1” (25 mm) from the
combustible surface on noncombustible spacers, called
ventilated shields, may be used to reduce clearances.
To protect a mantel from the heat of an Encore in a
fireplace installation, use a custom-made ventilated
mantel shield that is at least 48” (1219 mm) long, that is
centered over the stove. (Fig. 15) Ventilated shields for
side trim must extend the full length of the trim.
An unprotected mantel (“A”, Fig. 16) cannot be more
than 9 (229 mm) deep and must have a minimum clear-
ance of 38” (965 mm), measured from the stove’s top
plate. With a ventilated shield, this clearance may be
reduced safely to 22” (559 mm).
Unprotected top trim (B) protruding 3/4” (19 mm) or less
from the face of the fireplace must be a minimum of 27”
(686 mm) from the stove’s top surface. With a ventilated
trim shield, this clearance may be reduced safely to 20”
(508 mm).
Unprotected side trim (C) that protrudes 3/4” (19 mm)
or less from the face of a fireplace must have a minimum
clearance of 10” (254 mm), measured from the stove’s
top side edge. If the trim extends more than 3/4” (19 mm),
it is subject to the requirements for wall clearance.
The charts and sample installations that follow list all
the clearances required for the various installation con-
figurations of the Encore.