ODSHR Outdoor Woodburning Fireplace
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 11CF chimneys. Locate chimney supports at ceiling holes or other structural framing at 30 foot heights. Spacing between chimney supports must not exceed 30' (9 m). Use Chimney Support Model 11CS. (NOTE: The 11CS 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 2¹⁄₂" (64mm) 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
If you need help in determining fireplace location or how the chimney system should be run, contact your CFM
Corporation dealer for assistance.
Chimney Sup- port Strap
11CS
FP284
Fig. 9 Chimney support installation
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 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. 10)
When a fireplace is installed in a chase or on an 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)
Hard, Flat
Surface
Insulation
Platform
FP555SHR
Fig. 10 Insulating between platform and fireplace.
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