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10
Majestic Fireplaces
®
ODSR Series "A"
20006811
Cutting the Hole
Cover fireplace collar opening and cut proper sized
chimney hole in chimney. The SK8 pipe allows you to
run pipe through a typical 16” on center joist without
cutting joists.
Framing the Ceiling Hole
Frame the ceiling chimney hole as shown in Figure
12. It is good practice to use framing lumber that is the
same size as the ceiling joists; this is a requirement at
attic level.
The following table gives firestop spacer model num-
bers:
Fig. 12 Typical frame for ceiling chimney hole.
FP551
FP551
BR/BC
9/29/97
AB
AB
A "SK" Series framing = 14¹⁄₂" X 14¹⁄₂" (368 x 368mm)
B "S" Series framing = 17¹⁄₂" X 17¹⁄₂" (445 x 445mm)
Existing
Ceiling Joist
Ceiling
New
Framing Members
Chimney Hole
Fig. 11 Ceiling chimney hole sizes necessary for installing
firestop spacer.
Size of Chimney Vertical 30°
8" Flue SKFS2A SKFS6A
"SK" Series 14
¹⁄₂" x 14¹⁄₂" 14¹⁄₂" x 25¹⁄₂"
(368mm x 368mm) (368mm x 648mm)
8" Flue FS2A FS6A
"S" Series 3-Wall 17
¹⁄₂" x 17¹⁄₂" 17⁷⁄₈" x 29⁵⁄₈"
(445mm x 445mm) (454mm x 753mm)
Angle of Chimney at Ceiling
The inside dimension of the frame must be the same
as the hole size selected from Figure 11 in order to
provide required the 1¹⁄₂" (38mm) of air space between
the outside diameter of the chimney and the edges of
the framed ceiling hole.
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 1¹⁄₂" (38 mm), al-
lowing the remainder to extend in front of firebox. Over-
FP557
BR
11/10/97
1¹⁄₂"
FP557
Fig. 13 Safety strip installation.
1/2" Min.
Overlap
Metal Safety
Strips
(1, 2 or 3 pieces)
"Z" Safety
Strip
(not sup-
plied)
Fire-
place
Plat-
form
Hearth Ext.
lap strips at least 1/2" (13 mm) to provide a positive
joint. (Flat safety strips are packed with fireplace.) (Fig. 13)
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 1¹⁄₂"
(38mm) wide and equal in length to the metals strips
provided with the fireplace.
NOTE: Safety strips are not required over noncombus-
tible floors where all supports at the base of the fire-
place are noncombustible.
Four (4) nailing flanges are incorporated on each corner
of the surround. Bend the nailing flanges out, level the
box, then secure it firmly in place by nailing the flanges
to the framing members as shown in Figure 14.
FP549
Fig. 14 Fasten fireplace in position.
FP549
9/29/97
BR/BC
Nail Top
Standoffs
Nail Side-
Nailing
Flanges