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13
Majestic Fireplaces® ODSR Series "A"
20006811
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 Sections
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 Termination
Follow the installation instructions provided with the
chimney termination you have selected.
Installing Chimney In a Chase
Refer to Page 4, Figure 3 for an illustration of a typical
chase installation.
CAUTION: Treatment of firestop spacers and con-
struction of chase may vary with type of building.
These instructions are not a substitute for local building
codes. You must check your local building codes to
determine specific requirements for your city or state.
NOTE: Other building materials may be required in ad-
dition to CFM Corporation Firestop Spacers.
Finishing
CAUTION: All joints between the finished wall and
the fireplace surround (top/sides) must be sealed with
non-combustible material to prevent cold air leakage
into the room. Only noncombustible material may be
applied to the facing of the fireplace surround. (Black
painted area) (Fig. 19)
Finish Wall
Finish the wall with material of your choice. Do not
install a combustible mantel shelf less than 12"
(305 mm) from the top of the fireplace opening. Do
not install a mantel face plate less than 6" (159 mm)
from top of fireplace opening. (Fig. 21) If a combus-
tible material is used below a flat mantel shelf, consult
your local building codes for minimum clearance from
top of fireplace opening to bottom of mantel shelf.
All joints (top, bottom and sides) where wall or deco-
rative facing material meets fireplace surround must
be completely sealed with a noncombustible material.
(Figs. 20 and 21)
FP559
Fig. 19 Minimum clearances to combustibles.
Front View
Side View
Standoff
Combustible framing material
MUST NOT
penetrate
AIR SPACE (shaded areas).
Air Space Clearances
Only noncombustible
material may be applied
as facing to the black
fireplace surround.
Wall
Shield
Hearth
Extension
0" Clearance
to Floor
Firestop
¹⁄₂
" Air
Space
to Back
¹⁄₂" Air
Space
to Sides
FP559
BR/BC-AIR SPACES
11/10/97
1¹⁄₂"
¹⁄₂" air space
to sides
NOTE: No side wall protection is required for fireplaces
installed at 45° to two (2) side walls (corner installation).
Often a decorative surround or vertical portion of the
mantel is desired. If this is constructed of any combus-
tible material it must be within the safe zone indicated in
Figure 22.