Vermont Casting CR36L - Manual (Page 12)

12
CR Series Woodburning Fireplaces
20001316
Cut and Frame Roof Hole
Size of roof hole varies with the type of chimney
termination installed. Refer to installation instructions
provided with the chimney termination to find correct
size of roof hole.
There must be an air space (1¹⁄₂" (38mm) with SK8 )
between outermost portion of chimney sections and
any adjacent combustible surfaces. (Fig. 17) (Com-
bustible surfaces include burnable materials such as:
ceiling members, joists, flooring, combustible insula-
tion 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
chimney top installation instructions are horizontal
dimensions; 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.
Cut and frame the hole. It is good practice to use
framing lumber that is the same size as the rafters.
Install the frame securely because the chimney top
and flashing 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
CFM Corporation chimney termination you have se-
lected.
Installing Chimney In a Chase
Refer to Page 4, Figure 2 for an illustration of a typical
chase installation.
CAUTION: Treatment of firestop spacers and
construction of chase may vary with type of build-
ing. 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 addition to CFM Corporation Firestop
Spacers.
Finishing
CAUTION: All joints between the finished wall and
the fireplace surround (top/sides) must be sealed with
noncombustible 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. 17)
Side View
FP559CR
Air Spaces
CR Series
3/3/99 djt
Firestop
⁷⁄₁₆ ” Air Space
to Sides
Wall
Shield
³⁄₄ ” Air
Space to
Back
0” Clearance
to Floor
Hearth Extension
Only Noncombus-
tible Material may be
Applied as Facing to
the Black Fireplace
Surround
Combustible Framing Material
MUST NOT Penetrate AIR SPACE
(Shaded Areas) 1¹⁄₂” Air Space
to Combustible
Materials
Standoff
⁷⁄₁₆ ” Air Space
to Sides
Front View
Air Space Clearances
Fig. 17 Minimum clearances to combustibles.
FP559CR