Hearth and Home Technologies BAY-40 - Manual (Page 25)

25
A. Chimney Requirements
Measure vertical distances from the base of the fi replace
as shown in Figure 8.2.
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling Firestop
35 ft (10.7 m)
max. straight
unsupported
chimney height
16.5 ft (4.04 m) min. height/single offset-return
20 ft. (5.03 m) min. height/double offset-return
90 ft (27.43 m) max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
44 in.
(1118 mm)
Effective
Height
Figure 8.2 Chimney Requirements
Table 8.1
• Minimum overall straight height 14 (4.27 m)
• Minimum height with offset/return 16.5 ft (5.03 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 20 ft (6.1 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 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.
Heat & Glo • BAY-40, PIER-40 • 34977 • Rev W • 11/08
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 refl ect effective height.