Chimney Requirements - Heatilator FL92 Owner's Manual

A. Chimney Requirements
Measure vertical distances from the base of the fireplace
as shown in Figure 8.2.
• Minimum overall straight height
• Minimum height with offset/return
• Maximum height
• Maximum chimney length between an offset
and return
• Maximum distance between chimney
stabilizers
• Double offset/return minimum height
• Maximum unsupported chimney length
between the offset and return
• Maximum unsupported chimney height above
the fireplace
• Maximum unsupported chimney above roof
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 fire.
Table 8.1
HEIGHT OF CHIMNEY COMPONENTS
Chimney Stabilizer
SL11
Ceiling Firestops
FS538
FS540
Offsets/Returns
SL1130
Roof Flashing
RF570
RF571
Chimney Sections*
SL1106
SL1112
SL1118
SL1136
SL1148
* Dimensions reflect effective height.
Heatilator • FL92 Multi-Sided Woodburning Fireplace • 34955 • Rev Z 1/11
Determine the chimney components needed to complete
your particular installation:
•
14 (4.27 m)
16.5 ft (5.03 m)
90 ft (27.43 m)
•
20 ft (6.1 m)
35 ft (10.67 m)
•
20 ft (6.1 m)
6 ft (1.83 m)
•
35 ft (10.67 m)
6 ft (1.83 m)
in. mm
4-3/4 121
0 0
0 0
18 457
0 0
0 0
4-3/4 121
10-3/4 273
16-3/4 425
34-3/4 883
46-3/4 1187
Measure the total vertical height of the fireplace
installation from the base of the fireplace assembly to
the approximate location of the bottom of the termination
cap.
Subtract the effective height of the fireplace 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 identifies those components and where
used.
Install a ceiling firestop whenever the chimney penetrates
a floor/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 fireplace to a chimney flue servicing
another appliance. DO NOT connect to any air distribu-
tion duct or system. These actions could cause over-
heating/fire in the chimney flue, or release of exhaust
fumes into the living areas.
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling Firestop
16.5 ft (4.04 m) min. height/single offset-return
44 in.
20 ft. (5.03 m) min. height/double offset-return
(1118 mm)
Effective
Height
Figure 8.2

Chimney Requirements

6 ft (1.83 m) max.
unsupported chimney
above roof
35 ft (10.7 m)
max. straight
unsupported
chimney height
90 ft (27.43 m) max. height
25