Osburn OB04002 - Manual (Page 43)

Stratford Fireplace Installation and Operation Manual
_____________________________________________________________________ 43
6.3.3 FRAMING, FACING, MANTEL, AND COMBUSTIBLE SHELF
6.3.3.1 Framing
The construction of the framing, facing, and mantel must be in accordance with the standards and
the following illustrations:
A. Frame the sides and back of the fireplace using 2" × 3" (5 cm x 8 cm) or heavier lumber.
However, the front studs as well as headers on top of the fireplace must be of a depth no
more than the depth of the top standoffs.
WARNING: COMBUSTIBLE FRAMING MATERIAL CANNOT BE USED IN THE SPACE DIRECTLY
ABOVE THE FIREPLACE, EXCEPT FOR THE STUDS ABOVE THE FACING THAT
SUPPORT THE FACING MATERIAL AND MANTEL. THIS AREA MUST REMAIN EMPTY
FOR A HEIGHT OF 80” (2.03 M) MEASURED FROM THE BASE OF THE APPLIANCE.
B. Frame the fireplace with vertical studs at the sides of the fireplace running from floor to
ceiling. Position the studs back from the front edge of the fireplace, a space the thickness of
the facing material so that the facing can be installed flush with the fireplace facing. Frame
headers between the vertical studs only as follows:
−
Place the front facing headers in 2" × 3" or of a depth no more than the depth of the top
standoffs. Do not put wood or any material within the area above the fireplace except
what’s necessary to support the front facing.
−
Place headers only as required to support the facing and mantel.
WARNING: DO NOT PACK REQUIRED AIR SPACES INSIDE THE CHASE WITH INSULATION OR
OTHER MATERIALS.
WARNING: THE FIREPLACE MUST NOT BE IN CONTACT WITH ANY INSULATION OR LOOSE
FILLING MATERIAL. FOR THIS PURPOSE, COVER THE INSULATION WITH DRYWALL
PANELS OR ANY OTHER FINISHING MATERIAL INSIDE THE CHASE AROUND THE
FIREPLACE.