Majestic Fireplaces® ODSR Series "A"
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:
1/2" Min.
"Overlap
FP557 1¹⁄₂ 
Metal Safety Strips
(1, 2 or 3 pieces)
| "Z" Safety | |
Fire- | Strip | |
(not sup- | ||
place | ||
plied) | ||
|
Plat- |
|
form | Hearth Ext. |
| Angle of Chimney at Ceiling | |
Size of Chimney | Vertical | 30° |
8" Flue | SKFS2A | SKFS6A |
"SK" Series | 14¹⁄₂" x 14¹⁄₂" | 14¹⁄₂" x 25¹⁄₂" |
| (368mm x 368mm) | (368mm x 648mm) |
8" Flue | FS2A | FS6A |
"S" Series | 17¹⁄₂" x 17¹⁄₂" | 17⁷⁄₈" x 29⁵⁄₈" |
| (445mm x 445mm) | (454mm x 753mm) |
Fig. 11 Ceiling chimney hole sizes necessary for installing firestop spacer.
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.
Existing | AB | AB |
Ceiling Joist |
|
|
Chimney Hole
Ceiling
New
Framing Members
A"SK" Series framing = 14¹⁄₂" X 14¹⁄₂" (368 x 368mm) B "S" Series framing = 17¹⁄₂" X 17¹⁄₂" (445 x 445mm)
FP551
Fig. 12 Typical frame for ceiling chimney 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-
10
Fig. 13 Safety strip installation.
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.
| Nail Top |
| Standoffs |
| Nail Side- |
| Nailing |
| Flanges |
| FP549 |
Fig. 14 | Fasten fireplace in position. |
| 20006811 |