26
A. Chimney Requirements
Measure vertical distances from the base of the
fi
replace
as shown in Figure 8.2.
6 ft (1.83 m) max.
unsupported run
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling Firestop
35 ft (10.67 m)
max. straight
unsupported
chimney height
20.5 ft (6.25 m) min. height/single offset-return
24 ft. (7.32 m) min. height/double offset-return
90 ft (27.43 m) max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
68-1/8 in.
(1730 mm)
Effective Height
(bottom of fireplace
to top of starter collar)
Gas
Knockout
Figure 8.2 Chimney Requirements
Table 8.1
• Minimum overall straight height
20 ft
(6.1 m)
• Minimum height with offset/return
20.5 ft
(6.25 m)
• Maximum height
90 ft (27.43 m)
• Maximum chimney length between an offset
and return
20 ft
(6.1 m)
• Maximum distance between chimney
stabilizers
35 ft (10.67 m)
• Double offset/return minimum height
24 ft
(7.32 m)
• Maximum unsupported chimney length
between the offset and return
6 ft
(1.83 m)
• Maximum unsupported chimney height above
the
fi
replace
35 ft (10.67 m)
• Maximum unsupported chimney above roof
6 ft
(1.83 m)
WARNING! Risk of Fire!
You must maintain 2 in. (51
mm) air space clearance to insulation and other combus-
tible materials around the chimney system. Failure to do
so may cause overheating and
fi
re.
Determine the chimney components needed to complete
your particular installation:
• Measure the total vertical height of the fireplace
installation from the base of the
fi
replace assembly to
the approximate location of the bottom of the termination
cap.
• Subtract the effective height of the
fi
replace assembly
(see Figure 8.2) from the total vertical height to determine
the overall height of the chimney installation.
• Create a schematic for your application similar to Figure
8.2 showing components required (referring to Table
8.1). Figure 8.1 identi
fi
es those components and where
used.
• Install a ceiling
fi
restop whenever the chimney penetrates
a
fl
oor/ceiling.
NOTICE:
A maximum of two pairs of offsets and returns
may be used.
CAUTION! Risk of Fire and/or Asphyxiation! DO
NOT
connect this
fi
replace to a chimney
fl
ue servicing
another appliance.
DO NOT
connect to any air distribu-
tion duct or system. These actions could cause over-
heating/
fi
re in the chimney
fl
ue, or release of exhaust
fumes into the living areas.
Heat & Glo • EXCLAIM-50 • 4013-041 • Rev T • 08/08
HEIGHT OF CHIMNEY COMPONENTS
in.
mm
Chimney Stabilizer
SL11
4-3/4
121
Ceiling Firestops
FS538
0
0
FS540
0
0
Offsets/Returns
SL1130
18
457
Roof Flashing
RF570
0
0
RF571
0
0
Chimney Sections*
SL1106
4-3/4
121
SL1112
10-3/4
273
SL1118
16-3/4
425
SL1136
34-3/4
883
SL1148
46-3/4
1187
* Dimensions re
fl
ect effective height.