Installation, Chimney Supports | CFM Corporation ODSHR42 specs

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 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 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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