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A. Chimney Requirements
Vertical distances are measured from the base of the fi re-
place as shown in Figure 5.2.
• Minimum overall straight height
• Minimum height with offset/return
• Maximum height
• Maximum chimney length between an offset
and return
• Maximum distance between chimney stabiliz-
ers
• Double offset/return minimum height
• Maximum unsupported chimney length be-
tween the offset and return
• Maximum unsupported chimney height above
the fi replace
• Maximum unsupported chimney above roof
Note: A maximum of two pairs of offsets and returns may
be used.
WARNING
Fire Risk
•
Must maintain 2 in. (51 mm) air clearance
to insulation and other combustible
materials.
Table 5.1
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.
13
(3.96 m)
14.5 ft
(4.42 m)
90 ft
(27.43 m)
20 ft
(6.1 m)
35 ft
(10.67 m)
20 ft
(6.1 m)
6 ft
(1.83 m)
35 ft
(10.67 m)
6 ft
(1.83 m)
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
Heat & Glo • RH-36/RH-42 • 4044-153 Rev S • 06/07
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 fi replace assembly to the point where the smoke exits
the termination cap.
•
Subtract the effective height of the fi replace assembly from
the overall height of the fi replace installation (measured
from the base of the fireplace to the bottom of the
termination cap).
•
Refer to Table 5.1 to determine what components must
be selected to complete the fi replace installation.
•
Determine the number of ceiling fi restops, stabilizers,
roof flashing, etc. required to complete the fireplace
installation.
6 ft (1.83 m) max.
unsupported
run
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling Firestop
14.5 ft (4.42 m) min. height/single offset-return
37-3/4 in. (959 mm)
Effective Height
Figure 5.2
Chimney Requirements
CAUTION
•
Do NOT connect this fireplace to a chimney flue
servicing another appliance.
•
Do NOT connect to any air distribution duct or
system.
6 ft (1.83 m) max.
unsupported chimney
above roof
35 ft (10.67 m)
max. straight
unsupported
chimney height
20 ft. (6.1 m) min. height/double offset-return
90 ft (27.43 m) max. height
17
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