1.Cut the 9-inch by 9-inch hole.

2.Add the new framing members.

This shows a ceiling installation.

Drill a hole or drive a nail through this centerpoint.

Check the floor above for any obstructions, such as wiring or plumbing runs.

Reposition the fireplace and vent system, if necessary, to accommodate the ceiling joists and/or obstructions.

Cut a 9-inch x 9-inch (229mm x 229mm) hole through the ceiling, using the centerpoint previ- ously marked.

Frame the hole with framing lumber the same size as the ceiling joists.

9" (229 mm)

9" (229 mm)

 

 

CHIMNEY

 

HOLE

NEW

EXISTING CEILING

JOISTS

FRAMING

 

MEMBERS

 

CEILING

 

Figure 14 . 9”x 9” Hole & New Framing Members

If the area above the ceiling is NOT an attic, posi- tion and secure the ceiling firestop on the ceiling side of the previously cut and framed hole.

JOIST

CEILING

NAILS (4 REQUIRED)

CEILING FIRESTOP

Figure 15. Ceiling Firestop (Ceiling Side)

Heat & Glo • CFX-CRESCENT705-900 Rev. P • 12/07

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Hearth and Home Technologies CFX-Crescent owner manual Hole & New Framing Members