Chimney Offset Installation - MHSC SB50HB Installation, Operation And Maintenance Manual

SB50HB Series Woodburning Fireplace
Chimney requirements - Offset Installations
Chimney Flue Exit
A
D
6 FT.
C
Offset
B
Hearth Floor
example 1
Notes: G + H cannot exceed 0 feet.
*11CF Chimney airspace clearance = " 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.
SB50HB
Max.: 86'
Min.:
0 Elbows 18'0"
 Elbows* 4'0"
4 Elbows* 30'0"
B. 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.
Figure 22
0
Chimney
Section
Elbow
B
G
E
rise
H
example 2
C. The chimney cannot be more than
30° from the vertical plane in any instal-
lation.
d. The maximum length of the angled
run of the total chimney system is 0
feet. (G plus H cannot exceed 0 feet.)
e. 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.
NOTe: This offset distance may not be
your full offset distance. See Examples
 and 3.

CHIMNey OFFSeT INSTaLLaTION

30°
Return
Elbow
G
30°
Offset
Elbow
11CS Sup-
port
30°
Return
Elbow
H
30°
Offset
Elbow
example 3
FP69
IWF269
MBUF
5/16/96
rev. 5/25
OFFSET
RISE
FP8
30° elbow Offsets
IWF282
MBUF
5/26/96
1' 1¹⁄₂' 3' 4' Offset
0 0 0 0 0 3"
1 0 0 0 0 8Z\₄"
0 1 0 0 0 11Z\₄"
 0 0 0 0 13Z\x"
1 1 0 0 0 16Z\x"
0 0 1 0 0 0Z\₄"
 1 0 0 0 1C\₄"
0 0 0 1 0 6Z\₄"
0 1 1 0 0 8Z\x"
1 0 0 1 0 31Z\x"
0 1 0 1 0 34Z\x"
0 0  0 0 37Z\x"
1 1 0 1 1 41Z\x"
0 0 1 1 1 45"
0 1  0 1 47Z\₄"
0 0 0  1 51"
0 1 1 1 1 53Z\₄"
0 0 3 0 1 56Z\₄" 103Z\₄"
0 1 0  1 59Z\₄" 108Z\x"
0 0  1 1 6Z\₄" 113Z\x"
0 1 3 0 1 64Z\x" 117Z\x"
0 0 1  1 68Z\₄"
0 1  1 1 70Z\x"
0 0 0 3 1 74Z\₄" 134Z\x"
0 1 1   78" 140C\₄"
0 0 3 1  81"
0 1 0 3  84" 151Z\₄"
0 0    87" 156Z\x"
0 1 3 1  89Z\₄" 160Z\₄"
0 0 1 3  93" 166C\₄"
0 1    95Z\₄" 170C\₄"
0 0 0 4  99Z\₄" 177C\₄"
0 1 1 3  101Z\₄" 181C\₄"
0 0 3   104Z\₄" 186Z\₄"
0 1 0 4  107Z\₄" 191Z\x"
0 0  3  110Z\₄" 196C\₄"
0 1 3  3 114" 03Z\₄"
0 0 1 4 3 117C\₄" 09C\₄"
0 1  3 3 10" 13Z\x"
0 0 0 5 3 13C\₄"
87D0058
rise
11"
0"
5Z\₄"
9Z\₄"
34Z\₄"
40C\₄"
43Z\x"
51Z\₄"
55Z\₄"
60Z\₄"
65Z\x"
70C\₄"
77C\₄"
83C\₄"
87Z\x"
94"
98"
14"
18"
146"
0"