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14
424WBST Designer Woodburning Fireplaces
87D1506
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 sec-
tions (all pipes) should extend.
Follow the installation instructions provided with the
chimney termination you have selected.
Refer to Page 5, Figure 4 for an illustration of a typical
chase installation.
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.
You check your local building codes to determine
specific requirements for your city or state.
Other building materials may be required in addition to
Firestop Spacers.
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. 20)
Finish the wall with material of your choice.
If a combustible
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.
No side wall protection is required for fireplaces
installed at 45° to two (2) side walls (corner installation).
Adjacent combustible side walls that are within 16" (406
mm) of fireplace opening must be protected with an
MHSC Wall Shield Model SP40 or a specifically built
wall shield described in Figure 20 & 24.
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 24.
FP717
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
OUTER
DOME
1/2" (13 mm)
Air Space
to Sides
1/2" (13mm)
air space to sides
FP717
STR/CVR
AIR SPACES
9/23/98
156O"
(38 mm)
Maintain
1/2" (13 mm)
air space
to sides