Vermont Casting ODSR36A - Manual (Page 12)

12
Majestic Fireplaces
®
ODSR Series "A"
20006811
FP593
SR/C
11/20/97
Fig. 17 Installing firestop spacer.
FP593
Attic Installation
Ceiling Installation
Nails (4)
Firestop
Spacer
Joist
Joist
Firestop Spacer
Nails (4)
Install the attic insulation shield with the flanges on its
base extending down into the framing hole. Nail each
corner of attic insulation shield to the framing members
of the ceiling hole using 8d nails. Attic shields are not
required at the roof.
FP263
Fig. 18 Attic shield installlation (Canadian requirement).
FP263
MBUF
5/9/96
Attic
Insulation
Shield
Nails
(4 required)
Attic
Joist
Ceiling
Base
Flanges
Continue Installing Pipe to Complete Run
Continue attaching pipe sections to complete system
to next level always being careful that the pipe is firmly
snapped locked in place before proceeding to next pipe
section.
Chimney Supports
If chimney supports are required, they are installed the
same as elbows. Nail chimney support straps to adja-
cent structural framing, as shown on, Page 7, Figure
8. Bend straps as necessary and make sure they are
secure so they will support the weight of the chimney. A
chimney support is 2¹⁄₂" (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.
Additional Ceilings
If you encounter additional ceilings, repeat same steps
required for first ceiling installation. Refer to firestop
illustration on Figure 17.
Penetrating the Roof
Run pipe to roofline. Since chimney system must be
vented to the out-of-doors, you must use an approved
CFM Corporation termination.
If a chase is used, refer to the installation manual pro-
vided with the termination cap.
Locate Chimney Centerpoint On Roof
Use same procedure detailed in locating centerpoint of
the flue system.
Drive a nail up through roof at the center point. This will
determine center point on outside of the roof.
Cut and Frame Roof Hole
Size of roof hole varies with the type of chimney
termination installed. Refer to installation instructions
provided with CFM Corporation chimney termination to
find correct size of roof hole.
There must be a 1¹⁄₂ (38 mm) air space between out-
ermost portion of chimney sections and any adjacent
combustible surfaces. (Combustible surfaces include
burnable materials such as: ceiling members, joists,
flooring, combustible insulation and roof structures.)
WARNING: DO NOT PACK REQUIRED AIR SPACES
WITH INSULATION OR OTHER MATERIALS.
Mark an outline of the roof hole around the center of the
point nail. NOTE: Hole dimensions given in the chim-
ney top installation instructions are horizontal dimen-
sions; therefore, the hole size must be marked on the
roof accordingly.
Cover the opening of the installed chimney so debris
cannot get into the system.