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Hearth Requirements
In some fireplaces, the hearth in front of the fireplace
opening is brick, stone, slate, or some other noncom-
bustible material that is in direct contact with concrete
poured over earth. These are the only hearths that are
considered noncombustible.
In other fireplaces, the brick or concrete hearth in front
of the fireplace opening is supported by heavy wooden
framing. Because neither brick nor concrete has good
insulating properties, heat radiated by the fire will pass
downward through the hearth to the wooden framing.
Such hearths are considered combustible.
Floor Protection
Unless the fireplace and hearth are constructed over a
completely noncombustible surface (such as unpainted
concrete over dirt), a floor protector must be used in
Seville Insert installations in front of and to the sides of
the door as protection against spilled coals and em-
bers.
f i r e - p a r t s . c o m
Floor protectors must extend at least 8" (203mm) from
the side of the stove, making the protector 40"
(1016mm) wide. In addition, the floor protector must
extend from the glass door a minimum of 16" (406mm)
in the United States and 18"(457mm) in Canada.
The approved construction of a floor protector calls for
24 gauge galvanized sheet metal covered with a listed
floor protector material that is at least 7/16" (11mm)
thick (such as Wonderboard® or Durock®). The floor
protector may be covered with a noncombustible
decorative material if desired.
B
United States
A.
16" (406mm)
B.
8" (203mm)
C.
40" (1016mm)
NOTE: Measure from side of stove.
Fig. 6 Minimum floor protector requirements.
30001586
Glass
Door
A
B
C
Canada
18" (457mm)
8" (203mm)
40" (1016mm)
FP1086
Vermont Castings Seville Insert
The Chimney Connector
Connect your insert to the chimney flue with a "positive
flue connection." Such a connection provides a direct
passageway for smoke and exhaust gases leading
from the flue collar of the insert to the first chimney
lining tile. Positive flue connections are required in
many areas before an installation can be approved.
The chimney connector itself should have a minimum
cross-sectional area of 28 square inches (181 square
centimeters), equivalent to an 6" (152mm) diameter
opening, and must be 24 gauge or heavier.
Sealing Requirements
It is important to seal off the flue completely from the
room air for proper operation of your insert. There are
different ways to accomplish this:
1. Install a customized seal at the damper level;
2. Have your chimney professionally relined and
connect the liner directly to the insert.
A Custom Damper Seal
Fabricate a custom sealing plate at or below the
fireplace damper frame. The plate can be fastened
securely to the lintel (the structural piece spanning the
fireplace opening) and to the surrounding masonry, or
be securely fastened to the damper frame. A section
of chimney connector, attached to the insert flue collar,
can then run up through the custom sealing plate and
direct exhaust into the chimney liner.
A Relined Chimney
There are a number of fittings available from your
Vermont Castings' Authorized Dealer that are designed
to form the connection between the insert and chimney
liner. Your dealer as well as your local chimney sweep
can advise you on the types of lining systems currently
available.
Preliminary Steps for Installing the Insert
into a Masonry Fireplace
1. Remove the Masonry Fireplace Damper
The existing damper plate within your fireplace must be
removed or, if that is not possible, must be fastened
securely in a fully-open position. Many dampers can
be removed simply by removing a cotter pin and/or set
screw.
Custom Fabrication:
Be sure any chimney connector or adaptor is properly
installed and secured in place. There should be a slip
joint near the insert so that the connection can be
easily disengaged for removal and cleaning of the unit.
7
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