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15
53D9052
624WBPF Woodburning Fireplace
0 0 0 0 0 3" 11"
1 0 0 0 0 8Z\₄" 20"
0 1 0 0 0 11Z\₄" 25Z\₄"
2 0 0 0 0 13Z\x" 29Z\₄"
1 1 0 0 0 16Z\x" 34Z\₄"
0 0 1 0 0 20Z\₄" 40³\₄"
2 1 0 0 0 21³\₄" 43Z\x"
0 0 0 1 0 26Z\₄" 51Z\₄"
0 1 1 0 0 28Z\x" 55Z\₄"
1 0 0 1 0 31Z\x" 60Z\₄”
0 1 0 1 0 34Z\x" 65Z\x"
0 0 2 0 0 37Z\x" 70³\₄"
1 1 0 1 1 41Z\x" 77³\₄"
0 0 1 1 1 45" 83³\₄"
0 1 2 0 1 47Z\₄" 87Z\x"
0 0 0 2 1 51" 94"
0 1 1 1 1 53Z\₄" 98"
0 0 3 0 1 56Z\₄" 103Z\₄"
0 1 0 2 1 59Z\₄" 108Z\x"
0 0 2 1 1 62Z\₄" 113Z\x"
0 1 3 0 1 64Z\x" 117Z\x"
0 0 1 2 1 68Z\₄" 124"
0 1 2 1 1 70Z\x" 128"
0 0 0 3 1 74Z\₄" 134Z\x"
0 1 1 2 2 78" 140³\₄"
0 0 3 1 2 81" 146"
0 1 0 3 2 84" 151Z\₄"
0 0 2 2 2 87" 156Z\x"
0 1 3 1 2 89Z\₄" 160Z\₄"
0 0 1 3 2 93" 166³\₄"
0 1 2 2 2 95Z\₄" 170³\₄"
0 0 0 4 2 99Z\₄" 177³\₄"
0 1 1 3 2 101Z\₄" 181³\₄"
0 0 3 2 2 104Z\₄" 186Z\₄"
0 1 0 4 2 107Z\₄" 191Z\x"
0 0 2 3 2 110Z\₄" 196³\₄"
0 1 3 2 3 114" 203Z\₄"
0 0 1 4 3 117³\₄" 209³\₄"
0 1 2 3 3 120" 213Z\x"
0 0 0 5 3 123³\₄" 220"
¹⁄₂
G + H cannot exceed 20 feet.
*11CF Chimney airspace clearance = 2" minimum.
The following safety rules apply to offset
installations (letters correspond with illustra-
tion above):
Height of the chimney is measured from
the hearth to the chimney exit.
624WBPF
Max.: 86’0”
Min.:
0 Elbows 14’0"
2 Elbows* 14’0”
4 Elbows* 21'0"
Do not use more than 4 elbows per chim-
ney.
Attach the straps of the return (top) elbow to a
structural framing member.
The offset (first) elbow of any pair does not
have straps.
FP269
The chimney cannot be more than
30° from the vertical plane in any instal-
lation.
The maximum length of the angled
run of the chimney system is 20
feet. (G plus H cannot exceed 20 feet.)
A chimney support (Model 11CS)
is required every 6 feet of angled run
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.
This offset distance may not be
your full offset distance. See Examples
2 and 3.
IWF282
MBUF
5/26/96
Offset
Rise
FP282
D
B
G
H
B
C
E
6 FT.
G
H
A
IWF269
MBUF
5/16/96
rev. 5/25
30°
Return
Elbow
Chimney Flue Exit
Chimney
Section
30°
Offset
Elbow
11CS Sup-
port
30°
Offset
Elbow
30°
Return
Elbow
Elbow
Hearth Floor
Figure 17