Chimney Requirements - Heat & Glo HST-48D Owner's Manual

A. Chimney Requirements
Measure vertical distances from the base of the fireplace
as shown in Figure 8.2.
a. Minimum overall straight height
b. Minimum height with offset/return
c. Maximum height
d. Maximum chimney length between an offset and
return
e. Maximum distance between chimney stabilizers
f. Double offset/return minimum height
g. Maximum unsupported chimney length between the
offset and return
h. Maximum unsupported chimney height above the
fireplace
i. 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
US Canada ONLY
Chimney Stabilizer
SL11
Ceiling Firestops
FS538
FS540
Offsets/Returns
SL1130
Roof Flashing
RF570
RF571
Chimney Sections*
SL1106
SL1112
SL1118
SL1136
SL1148
n/a
* Dimensions reflect effective height.
ft
14.0
16.5
90.0
20.0
35.0
22.0
6.0
35.0
6.0
in. mm
SL4 4-3/4 121
FS538 0 0
FS540 0 0
SL430 14-1/2 368
RF570 0 0
RF571 0 0
SL406 4-3/4 121
SL412 10-3/4 273
SL418 16-3/4 425
SL436 34-3/4 883
SL448 46-3/4 1187
SLA10 16-3/4 425
Heat & Glo • HST-48D US-CAN • 4012-040 • Rev K• 3/12
Determine the chimney components needed to complete
your particular installation:
• Measure the total vertical height of the fireplace
installation from the base of the fireplace assembly to
meters
the approximate location of the bottom of the termination
4.27
cap.
5.03
• Subtract the effective height of the fireplace assembly
27.43
(see Figure 8.2) from the total vertical height to determine
6.1
the overall height of the chimney installation.
• Create a schematic for your application similar to Figure
10.67
8.2 showing components required (referring to Table
6.71
8.1). Figure 8.1 identifies those components and where
1.83
used.
• Install a ceiling firestop whenever the chimney penetrates
10.67
a floor/ceiling.
1.83
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.
d & g
Ceiling Firestop
58-7/8 in.
(1495 mm)
Effective
Height
Figure 8.2
i
11-10 in. (279-254 mm)
adapter required in
Canada.
Chimney Requirements (refer to list in Sect. 5.A.)
h
a,b,c,f
25