Heat & Glo LifeStyle BW36 Assembling Chimney Sections, Installing the Firestop Spacers

BW36 SERIES WOODBURNING FIREPLACE

STEP 4 - Assembling Chimney Sections.

Attach either a straight chimney section or an offset to the top of the fireplace depending on your installation requirement. When using offsets and returns, we highly recommend securing in place on the top of the fireplace with screws to permanently attach them to the top of the fireplace. See Figure 11.

When using elbows right off of the top of the unit, you will need to flatten the lances before you slip it on the collar. Once it is on, line it up and secure it with screws to the unit collar through the slots in the elbow.

Figure 11

Offset Secured to Fireplace

NOTE: The inner flue is placed to the inside of the flue section below it. The outer casing is placed outside the outer casing of the chimney section below it. See Figure 12.

Figure 12

Connecting Chimney

Sections

STEP 5 - Preparing the Ceiling for Firestop Spacers.

Mark and cut out an opening in the ceiling for the par- ticular firestop spacer being utilized (141⁄2" x 141⁄2" for an FS338, 141⁄2" x 183⁄4" for an FS339, or 141⁄2" x 23" for an FS340). Frame the opening with the same dimension lumber used in the ceiling joists.

STEP 6 - Installing the Firestop Spacers.

Install the firestop spacer FS338 (Straight), FS339 (if a 15° offset located is in the ceiling joist area) or FS340 (if a 30° offset is located in the ceiling joist area). Nail the four [4] sides of the firestop spacer to the joists using a minimum of three [3] nails per side.

4-00

No one builds a better fire

CAUTION:

INNER FLUE AND OUTER LINER

SECTIONS CANNOT BE DISASSEM-

BLED ONCE LOCKED TOGETHER.

PLAN AHEAD TO INSURE THE

PROPER INSTALLATION HEIGHT IS

ACHIEVED WITH THE SELECTED

CHIMNEY COMPONENTS.

These firestop spacers are designed to provide the minimum two inch air space required around the chimney. In all situations, the firestop spacers are to be nailed to the ceiling joists from the bottom or fire- place side, EXCEPT when the space above is an insulated ceiling or attic space. In this situation, the firestop spacer must be nailed from the top side to prevent loose insulation from falling into the required two inch air space around the chimney.

Firestop spacers must be used whenever the chim- ney penetrates a ceiling/floor area.

ROOM ABOVE

ATTIC ABOVE

Figure 13

Installing the Firestop Spacer

STEP 7 - Installing an AS8 insulation shield

An AS8 insulation shield should be installed when there is a possibility of insulation coming into contact with the factory-built chimney system. The AS8 is installed by positioning it over the vertical chimney section where it penetrates an FS338 firestop spacer. The FS338 will support the AS8. See Figure 14 on page 16. When the factory-built chimney penetrates an insulated ceiling at either 15 or 30 degrees from vertical, an insulation dam should be constructed from plywood or sheet metal. A minimum 2" air space must be provided between the insulation dam and the factory-built chimney system.

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