Installation - Vermont Castings WMC36 Homeowner's Installation And Operating Manual

Chimney Supports
The chimney system is supported by the fireplace for
vertical chimney heights less than 30' (9 m) above the
hearth. Chimney supports are required if the vertical
height exceeds 30' (9 m) with SK8 chimneys or 20' (6 m)
with 3-wall chimneys. Locate chimney supports at ceil-
ing holes or other structural framing at 30' (9 m) (SK8)
or 20' (6 m) (3-wall) heights. Spacing between chimney
supports must not exceed 30' (9 m) (SK8) or 20' (6 m)
(3-wall). Use Chimney Support Model SKCS8 (SK8) and
TCS8A (3-wall). (NOTe: The chimney support cannot
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 2Z\x" 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)
Chase Installation
A chase is a vertical boxlike 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. 3)
If you need help in determining fireplace location or how
the chimney system should be run, contact your Vermont
Castings Group dealer for assistance.
Chimney Sup-
port Strap
Chimney
Support
Fig. 7 Chimney support installation.
20000583
FP284
FP284
MBUF CHIMNEY SUPPORT
1/28/99 djt
WMC Series Woodburning Fireplace

Installation

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 noncombustible insula-
tion 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. 8)
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 sheet-
ing material to assure the space around the fireplace is
totally protected. (Fig. 3)
When installing the chimney, DO NOT caulk between
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 13, Fig. 18)
Fig. 8 Insulating between platform and fireplace.
FPC555
Platform insulation
circulating model
1/28/99 djt
Cover Plate
Top Shield
Hard, Flat
Surface
Insulation
Platform
FPC555
7