Hearth and Home Technologies HST-48D - Manual (Page 25)

25
A. Chimney Requirements
Measure vertical distances from the base of the fi replace
as shown in Figure 8.2.
d & g
Ceiling Firestop
h
i
58-7/8 in.
(1495 mm)
Effective
Height
a,b,c,f
11-10 in. (279-254 mm)
adapter required in
Canada.
Figure 8.2 Chimney Requirements (refer to list in Sect. 5.A.)
Table 8.1
ft meters
a. Minimum overall straight height 14.0 4.27
b. Minimum height with offset/return 16.5 5.03
c. Maximum height 90.0 27.43
d. Maximum chimney length between an offset and
return
20.0 6.1
e. Maximum distance between chimney stabilizers 35.0 10.67
f. Double offset/return minimum height 22.0 6.71
g. Maximum unsupported chimney length between the
offset and return
6.0 1.83
h. Maximum unsupported chimney height above the
fi replace
35.0 10.67
i. Maximum unsupported chimney above roof 6.0 1.83
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 • HST-48D US-CAN • 4012-040 • Rev F • 11/08
HEIGHT OF CHIMNEY COMPONENTS in. mm
US Canada ONLY
Chimney Stabilizer
SL11 SL4 4-3/4 121
Ceiling Firestops
FS538 FS538 0 0
FS540 FS540 0 0
Offsets/Returns
SL1130 SL430 14-1/2 368
Roof Flashing
RF570 RF570 0 0
RF571 RF571 0 0
Chimney Sections*
SL1106 SL406 4-3/4 121
SL1112 SL412 10-3/4 273
SL1118 SL418 16-3/4 425
SL1136 SL436 34-3/4 883
SL1148 SL448 46-3/4 1187
n/a SLA10 16-3/4 425
* Dimensions refl ect effective height.