Chimney Requirements - Heatilator Wood Burning Fireplace ST36D Owner's Manual

A. Chimney Requirements
Measure vertical distances from the base of the fi replace
as shown in Figure 8.2.
• Minimum overall straight height
• Minimum height with offst/return
• Maximum height
• Maximum chimney length bewtween 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
fi replace
• 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 fi re.
Table 8.1
HEIGHT OF CHIMNEY COMPONENTS
Chimney Stabilizer
SL3
Ceiling Firestops
FS338
FS339
FS340
Offsets/Returns
SL315
SL330
Roof Flashing
RF370
RF371
Chimney Sections*
SL306
SL312
SL318
SL324
SL336
SL348
* Dimensions refl ect effective height.
ft meters
14.5 4.42
16 4.88
90 27.43
20 6.10
35 10.67
20 6.10
6 1.83
35 10.67
6 1.83
in. mm
4-3/4 121
0 0
0 0
0 0
13-3/8 340
15-1/2 394
0 0
0 0
4-3/4 121
10-3/4 273
16-3/4 425
22-3/4 578
34-3/4 883
46-3/4 1187
Heatilator • ST36D • 20396 • Rev AA • 11/08
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 identifi 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.
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
47-1/4 in.
(1200 mm)
Effective
Height
Figure 8.2

Chimney Requirements

6 ft (1.83 m) max.
unsupported chimney
above roof
35 ft (10.67 m) max. straight
unsupported chimney height
16 ft (4.88 m) min. height (single offset-return)
20 ft. (6.10 m) min. height (double offset-return)
90 ft (27.4 m) max. height
25