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Vertical distances are measured from the base of the fire-
place as shown in Figure 8.2
To determine the chimney components needed to complete your
particular installation, follow the steps below:
• Determine the total vertical height of the fireplace installation. This
dimension is measured from the base of the fireplace assembly
to the point where the smoke exits the termination cap.
• Subtract the effective height of the fireplace assembly from the
overall height of the fireplace installation (measured from the
base of the fireplace to the bottom of the termination cap, 13 ft.
(4m).
• Refer to Table 8.1 to determine what components must be
selected to complete the fireplace installation.
• Determine the number of ceiling firestops, stabilizers, roof
flashing, etc. required to complete the fireplace installation.
6 ft (1.8 m) max.
unsupported
run
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
35 ft (10.7 m)
max. straight
unsupported
chimney height
14.5 ft (4.42 m) min. height/single offset-return
20 ft. (6.10 m) min. height/double offset-return
50 ft (15.24 m) max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
44 in.
(1118 mm)
to top of
standoffs
Figure 8.2 Chimney Requirements
Table 8.1
HEIGHT OF CHIMNEY COMPONENTS
in.
mm
Chimney Stabilizer
SL3
4-3/4
121
Ceiling Firestops
FS338
0
0
FS339
0
0
FS340
0
0
Offsets/Returns
SL315
13-3/8
340
SL330
15-1/2
394
Roof Flashing
RF370
0
0
RF371
0
0
Chimney Sections*
SL306
4-3/4
121
SL312
10-3/4
273
SL318
16-3/4
425
SL324
22-3/4
578
SL336
34-3/4
883
SL348
46-3/4
1187
* Dimensions reflect effective height.
NOTICE:
A maximum of two pairs of offsets and returns
may be used.
Minimum overall straight height
13 ft
3.96 m
Minimum height with single offset/
return
14.5 ft
4.42 m
Double offset/return minimum height
20 ft
6.1 m
Maximum height
50 ft
15.24 m
Maximum chimney length between an
offset and return
20 ft
6.1 m
Maximum distance between chimney
stabilizers
35 ft
10.67 m
Maximum unsupported chimney
length between the offset and return
6 ft
1.83 m
Maximum unsupported chimney
height above the fireplace
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 fire.
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 distribution duct or
system. These actions could cause overheating/fire in the
chimney flue, or release of exhaust fumes into the living
areas.
NOTICE
: You must provide support for the pipe during
construction and check to be sure inadvertent loading has
not dislodged the chimney section from the fireplace or at
any chimney joint.
A. Chimney Requirements
B. Chimney Termination Requirements