8
Vermont Castings Stratton
30004508
chimney Supports
The SK chimney system can be supported by the fire-
place for vertical chimney heights up to 30’ (9 m) above
the hearth. Chimney supports are required if the vertical
height exceeds 30’ (9 m). Locate chimney supports
at ceiling holes or other structural framing at 30’ (9 m)
intervals. Spacing between chimney supports
must not
exceed 30’ (9 m). Use Chimney Support Model SKCS8.
(NoTe: The SkcS8 cannot be mounted directly to
the fireplace.)
Support provided by elbow straps fulfills
the support requirement only if they are spaced as pre-
viously described. (A chimney support is
Z\x
" (64 mm)
long when installed.)
Angled chimney runs require a support every 6’ (1.8 m)
in addition to the elbow straps. Chimney supports are
used for this function. (Fig. 7)
FP284a
TCS8A
8/21/00
Chimney Sup-
port Strap
SKCS8
FP84a
Fig. 7
Chimney support installation.
chase installation
A chase is a vertical box-like structure which encloses
the fireplace and/or chimney. A chase is typically built
on the outside of the house with the fireplace opening
cut into the outer wall of a room. (Page 5, Fig. )
If you need help in determining fireplace location or how
the chimney system should be run, contact your Ver-
mont Castings dealer for assistance.
insulating Fireplace enclosure
for cold climates
If you live in a cold climate, it is not required but
highly recommended
that you insulate the fireplace
enclosure to reduce cold air penetration as much as
possible.
Insulate the base of the fireplace with a noncombus-
tible insulation rated for a minimum of 300° F. Insulat-
ing is
very important
for an outside wall installation
over a concrete slab. If the fireplace is installed on
a platform, insulation should be placed on top of the
platform
before the
fireplace is set in place. (Fig. 8)
When a fireplace is installed in a chase or on an
outside wall, the enclosure should be treated like any
outside wall in a home. Insulation should be installed
on the inside wall as well as the outside wall(s). In a
chase, it is also a good idea to install a firestop at the
first ceiling level above the fireplace and enclose the
chase with the sheeting material. Insulation may then
be installed above sheeting material to assure the
space around the fireplace is well sealed. (Fig. 3)
When installing the chimney,
Do NoT
caulk between
the outer pipe of the chimney and the firestops. It is
vital that some air be allowed to flow through this very
thin gap.
To minimize air infiltration from the chase to the home,
seal all joints between the finished wall and the fire-
place sheet metal. Use only noncombustible materi-
als, such as rock wool, plaster or mortar to seal these
joints.
caUTioN: when installing a fireplace in an insu-
lated enclosure, be sure all required air spaces
are maintained. (page 15, Fig. 22)
installation
FP1859
Platform insulation
5/08 djt
Hard
Flat
Surface
Insulation
Platform
FP1859
Fig. 8
Insulating between platform and fireplace.