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INSTALLATION
Attic Installation
Ceiling Installation
FP593
NOTE: If the attic insulation shield is used, the
firestop is not required in the attic installation.
Figure 18 -
Installing firestop spacer
FP593
SR/C
CHIMNEY SUPPORTS
11/20/97
If chimney supports are required, they are installed the
same as elbows. Nail chimney support straps to ad-
jacent structural framing, as shown on Figure 8, Page
8. Bend straps as necessary and make sure they are
secure so they will support the weight of the chimney.
A chimney support is 2Z\x" (64 mm) long when installed.
Consider this dimension when determining how many
straight chimney sections are needed.
NOTE: Chimney supports are generally used in long
runs in a chase installation. A chimney support cannot
be mounted directly to the fireplace.
ADDITIONAL CEILINGS
If you encounter additional ceilings, repeat same steps
required for first ceiling installation. Refer to firestop il-
lustration on Page 12, Figure 18.
PENETRATING THE ROOF
Run pipe to roofline. Since chimney system must be
vented to the out-of-doors, you must use an approved
termination.
If a chase is used, refer to the installation manual pro-
vided with the termination cap.
87D0176
LOCATE CHIMNEY CENTERPOINT ON
Nails (4)
ROOF
Use same procedure detailed in locating centerpoint of
Firestop
the flue system.
Spacer
Drive a nail up through roof at the centerpoint. This will
determine center point on outside of the roof.
Joist
CUT AND FRAME ROOF HOLE
Size of roof hole varies with the type of chimney termina-
tion installed. Refer to installation instructions provided
with the chimney termination to find correct size of roof
hole.
Joist
There must be an air space (1Z\x" (38 mm) with SK8
between outermost portion of chimney sections and any
adjacent combustible surfaces. (Fig. 20) (Combustible
surfaces include burnable materials such as: ceiling
Firestop
members, joists, flooring, combustible insulation and roof
Spacer
structures.)
WARNING: DO NOT PACK REQUIRED AIR SPACES
WITH INSULATION OR OTHER MATERIALS.
Nails (4)
Mark an outline of the roof hole around the center of the
point nail. NOTE: Hole dimensions given in the chimney
top installation instructions are horizontal dimensions;
therefore, the hole size must be marked on the roof ac-
cordingly.
Cover the opening of the installed chimney so debris
cannot get into the system.
Cut and frame the hole. It is good practice to use fram-
ing lumber that is the same size as the rafters. Install
the frame securely because the chimney top and flash-
ing anchored to the frame must be able to withstand
heavy winds.
INSTALL REMAINDER OF CHIMNEY SEC-
TIONS
Since you have already preplanned the height of your
termination according to the Ten Foot Rule, continue to
install pipe to the predetermined height.
Check the chimney top installation instructions for details
on how high above the roof top the chimney sections (all
pipes) should extend.
INSTALLING TOP HOUSING OR TERMINA-
TION
Follow the installation instructions provided with the
chimney termination you have selected.
INSTALLING CHIMNEY IN A CHASE
Refer to Page 5, Figure 4 for an illustration of a typical
chase installation.
CAUTION: Treatment of firestop spacers and construc-
tion of chase may vary with type of building. These
instructions are not a substitute for local building codes.
B36LA8 & B36RA8 Woodburning Fireplaces
21
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