Chimney Requirements - Majestic fireplaces ODSHR42 Homeowner's Installation And Operating Manual

ODSHR Outdoor Woodburning Fireplace
Chimney Requirements - Offset Installations
CHIMNEY FLUE EXIT
A
D
C
OFFSET
B
Example 1
Notes: G + H cannot exceed 20 feet (610cm).
*11CF Chimney airspace clearance = 2" (51mm) minimum.
Illustration Key
The following safety rules apply to offset
installations (letters correspond with illustra-
tion above):
A. Height of the chimney is measured from
the hearth to the chimney exit.
Maximum:
Minimum:
Without Elbows 14'6" (4.4 m)
With 2 Elbows* 15'6" (4.7 m)
With 4 Elbows* 21'0" (6.4 m)
B. Do not use more than 4 elbows per
chimney.
Attach the straps of the return (top) elbow
to a structural framing member.
The offset (first) elbow of any pair does not
have straps.
C. The chimney cannot be more than 30˚
Fig. 6 Chimney system requirements.
6
CHIMNEY
SECTION
ELBOW
B
G
E
RISE
6 FT.
H
HEARTH
FLOOR
Example 2
from the vertical plane in any installa-
tion.
D. The maximum length of the angled
run of the total chimney system is 20
feet. (G plus H cannot exceed 20 feet.)
E. A chimney support (Model 11CS)
ODSHR42
is required every 6 feet of angled run
90' (27.4 m)
of chimney. Chimney supports are
required for every 30 feet and 60 feet
chimney height above the hearth.
Determine the offset distance of your
chimney arrangement from the center-
line of the fireplace to the centerline of
the chimney where it is to pass through
the first ceiling.
NOTE: This offset distance may not be
your full offset distance. See Examples
2 and 3.
30˚
RETURN
ELBOW
G
30˚
OFFSET
ELBOW
11CS
30˚
SUPPORT
RETURN
ELBOW
H
30˚
OFFSET
ELBOW
Example 3
FP269
IWF269
MBUF
5/16/96
rev. 5/25
OFFSET
RISE
30˚ Elbow Offsets
IWF282
MBUF
1' 1¹⁄₂' 3'
4' Offset 5/26/96
0 0 0 0 0 3"
1 0 0 0 0 8¹⁄₄"
0 1 0 0 0 11¹⁄₄"
2 0 0 0 0 13¹⁄₂"
1 1 0 0 0 16¹⁄₂"
0 0 1 0 0 20¹⁄₄"
2 1 0 0 0 21³⁄₄"
0 0 0 1 0 26¹⁄₄"
0 1 1 0 0 28¹⁄₂"
1 0 0 1 0 31¹⁄₂"
0 1 0 1 0 34¹⁄₂"
0 0 2 0 0 37¹⁄₂"
1 1 0 1 1 41¹⁄₂"
0 0 1 1 1 45"
0 1 2 0 1 47¹⁄₄"
0 0 0 2 1 51"
0 1 1 1 1 53¹⁄₄"
0 0 3 0 1 56¹⁄₄" 103¹⁄₄"
0 1 0 2 1 59¹⁄₄" 108¹⁄₂"
0 0 2 1 1 62¹⁄₄" 113¹⁄₂"
0 1 3 0 1 64¹⁄₂" 117¹⁄₂"
0 0 1 2 1 68¹⁄₄"
0 1 2 1 1 70¹⁄₂"
0 0 0 3 1 74¹⁄₄" 134¹⁄₂"
0 1 1 2 2 78" 140³⁄₄"
0 0 3 1 2 81"
0 1 0 3 2 84" 151¹⁄₄"
0 0 2 2 2 87" 156¹⁄₂"
0 1 3 1 2 89¹⁄₄" 160¹⁄₄"
0 0 1 3 2 93" 166³⁄₄"
0 1 2 2 2 95¹⁄₄" 170³⁄₄"
0 0 0 4 2 99¹⁄₄" 177³⁄₄"
0 1 1 3 2 101¹⁄₄" 181³⁄₄"
0 0 3 2 2 104¹⁄₄" 186¹⁄₄"
0 1 0 4 2 107¹⁄₄" 191¹⁄₂"
0 0 2 3 2 110¹⁄₄" 196³⁄₄"
0 1 3 2 3 114" 203¹⁄₄"
0 0 1 4 3 117³⁄₄" 209³⁄₄"
0 1 2 3 3 120" 213¹⁄₂"
0 0 0 5 3 123³⁄₄"
20002264
IWF282
Rise
11"
20"
25¹⁄₄"
29¹⁄₄"
34¹⁄₄"
40³⁄₄"
43¹⁄₂"
51¹⁄₄"
55¹⁄₄"
60¹⁄₄"
65¹⁄₂"
70³⁄₄"
77³⁄₄"
83³⁄₄"
87¹⁄₂"
94"
98"
124"
128"
146"
220"