8
STR Series Woodburning Fireplaces
7412961
Insulating Fireplace Enclosure for Cold
Climates
If you live in a cold climate, it is not required but
highly recommended
that you insulate fireplace
enclosure to eliminate cold air penetration as much
as possible.
Insulate base of fireplace with a non-combustible
insulation rated for a minimum of 300°F. Insulating
is
very important
for outside wall installations over
a concrete slab. If fireplace is installed on a platform,
insulation should be placed on top of the platform
before
fireplace is set. (Fig. 9)
When a fireplace is installed in a chase or on a
outside wall, 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 sheeting material. Insulation may
then be installed above sheeting material to assure
the space around the fireplace is totally protected.
(Fig. 4)
When installing the chimney,
DO NOT
caulk be-
tween outer pipe and firestop. It is vital that some air
be allowed to flow through this very thin gap.
CAUTION:
WHEN INSTALLING A FIREPLACE
IN AN INSULATED ENCLOSURE, BE SURE ALL
REQUIRED AIR SPACES ARE MAINTAINED. (Page
14, Fig. 20)
Installation
Chimney Supports
The chimney system is supported by the fireplace for
vertical chimney heights less than 20' (6 m) above the
hearth. Chimney supports are required if the vertical
height exceeds 20' (6 m). Locate chimney supports
at ceiling holes or other structural framing at 20' (6m)
heights. Spacing between chimney supports
must not
exceed 20' (6 m). Use Chimney Support Model SKCS8
for SK8 chimney, and Model 11CS for 11CF chimney.
(NOTE: the chimney support can not be mounted
directly to the fireplace.)
Support provided by elbow
straps fulfills the support requirement only if they are
spaced as previously described. (A chimney support is
2
¹⁄₂
" (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. 9)
Chase Installation
A chase is a vertical box-like structure which encloses
the fireplace and/or chimney. Chases are typically built
on the outside of the house with fireplace opening cut
into the outer wall of a room. (Page 5, Fig. 4)
If you need help in determining fireplace location or how
the chimney system should be run, contact your Majes-
tic dealer for assistance.
FP284
Fig. 8
Chimney support installation
IWF284
MBUF
5/25/96
Chimney Sup-
port Strap
SKCS8
