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5 5
Chimney Assembly
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
stabilizers
• Double offset/return minimum height
• Maximum unsupported chimney length
between the offset and return
• Maximum unsupported chimney height above
the fi replace
• Minimum overall straight height if fi replace is
freestanding
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
SL4
Ceiling Firestops
FS538
FS540
Offsets/Returns
SL430
Roof Flashing
RF570
RF571
Chimney Sections*
SL406
SL412
SL418
SL436
SL448
* Dimensions refl ect effective height.
Heat & Glo LifeStyles Collection • Montana-42C • 4039-155 Rev D • 03/06
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
ft
m
the fi replace assembly to the point where the smoke exits
14
4.27
the termination cap.
16
4.88
•
Subtract the effective height of the fi replace assembly from
90
27.43
the overall height of the fi replace installation (measured
20
6.1
from the base of the fireplace to the bottom of the
termination cap).
35
10.67
•
Refer to Table 5.1 to determine what components must
be selected to complete the fi replace installation.
24
7.32
•
Determine the number of ceiling fi restops, stabilizers,
6
1.83
roof flashing, etc. required to complete the fireplace
installation.
35
10.67
6.33
1.93
•
•
in.
mm
4-3/4
121
0
0
0
0
14-1/2
368
0
0
0
0
4-3/4
121
10-3/4
273
16-3/4
425
34-3/4
883
46-3/4
1187
CAUTION
Do NOT connect this fireplace to a chimney flue
servicing another appliance.
Do NOT connect to any air distribution duct or
system.
15
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