Vermont Castings BC36MH Installation & Operating Manual page 8

BC36MH, BC42MH Woodburning Fireplace
Chimney Centerline
Actual Center-
point
Fig. 8 Locate centerline of chimney with plumb line.
Framing the Ceiling Hole
Frame the ceiling chimney hole as shown in Figure 9. It
is good practice to use framing lumber that is the same
size as the ceiling joists.
The inside dimension of the frame must be the same
as the hole size in order to provide the required 1Z⁄₂"
(38 mm) air space between the outside diameter of the
chimney and the edges of the framed ceiling hole.
Existing Roof
14Z⁄₂"
Joists
(368mm)
FP556MH
BC36MH
LOCATE CENTER LINE
Circulating model
5/28/99 djt
Ceiling
FP551A
Fig. 9 Typical frame for ceiling chimney hole.
FP551A
Frame chimney hole
14"
5/13/99 djt
8
7⁷⁄₈"
(200mm)
Plumb Line
Plumb Bob
Imaginary Cen-
terpoint
FP556MH
14Z⁄₂"
(368mm)
Chimney Hole
New Framing Members
Positioning, Safety Strips,
Securing The Fireplace
Slide fireplace into position.
Lift the fireplace front slightly and slide the metal safety
strips under front bottom edge about 1Z⁄₂" (38 mm),
allowing the remainder to extend in front of firebox.
Overlap strips at least 1/2" (13 mm) to provide a posi-
tive joint. (Flat safety strips are packed with fireplace)
(Fig. 10)
Safety strips are used to ensure that any combustible
materials in front of the fireplace are protected even
though a noncombustible hearth extension is required.
If fireplace is to be elevated above the floor, a "Z"
shaped metal safety strip must be fabricated and used
to protect combustible surfaces in front of the fireplace.
This "Z" shaped safety strip is not provided but must
be fabricated of metal with each horizontal leg at least
1Z⁄₂ inches wide and equal in length to the metal strips
provided with the fireplace.
NOTE: Safety strips are not required over noncombusti-
ble floors where all supports at the base of the fireplace
are noncombustible.
To prevent shifting of the fireplace, nail down straps and
nailing flanges are supplied on the fireplace.
Secure fireplace to floor with four (4) nail down straps
located at the bottom of either side of the fireplace.
Secure the fireplace to the vertical framing studs using
the appropriate nailing flanges on either side of the
fireplace front face. (Fig. 10)
Nailing
Flanges
Nail
Down
Straps 1/2" (13mm)
Min. Overlap
"
(38 mm)
Fig. 10 Safety strip installation.
FP557MH
BC36MH Safety strip installation
circulating models
Metal Safety Strips
(1, 2 or 3 pieces)
"Z" Safety
Fire-
Strip
place
(not included)
Plat-
Hearth Ext.
form
FP557MH
7412972