Chase Installation, Chimney Supports, 20005167

Vermont Castings EWF36A

Chimney Supports

The chimney system is supported by the fireplace for vertical chimney heights less than 30’ (9m) above the hearth. Chimney supports are required if the vertical height exceeds 30’ (9m). Locate chimney supports at ceiling holes or other structural framing at 30’ (9m) heights. Spacing between chimney supports must not exceed 30’ (9m). Use Chimney Support Model TCS8A.

(NOTE: The TCS8A 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 2¹⁄₂" (64mm) long when installed.)

Angled chimney runs require a support every 6’ (1.8m) in addition to the elbow straps. Chimney supports are

used for this function. (Fig. 6)

Chimney Sup- port Strap

TCS8A

FP284a

Fig. 6 Chimney support installation.

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. 2)

If you need help in determining fireplace location or how the chimney system should be run, contact your Ver- mont Castings dealer for assistance.

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. 7)

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. 2)

When installing the chimney, DO NOT caulk between outer pipe and firestop. It is vital that some air be al- lowed to flow through this very thin gap.

CAUTION: When installing a fireplace in an insu- lated enclosure, be sure all required air spaces are maintained. (Page 13, Fig. 17)

Hard

Flat

Surface

Insulation

Platform

FPC555a

Fig. 7 Insulating between platform and fireplace.

20005167