September 1, 2008
433-1390G
Page 21
7100FP EPA Woodburning Fireplace
R
A. Chimney Requirements
Vertical distances are measured from the base of the fire-
place as shown in Figure 21.1.
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 21.2 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
46 in.
(1168 mm)
to top of
standoffs
Figure 21.1 Chimney Requirements
Table 21.2
Fire Risk
•
Must maintain 2 in. (51 mm) air clearance
to insulation and other combustible
materials.
WARNING
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.
Note:
A maximum of two pairs of offsets and returns may
be used.
B. Chimney Termination Requirements
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
• Do NOT connect this unit to a chimney flue
servicing another appliance.
• Do NOT connect to any air distribution duct or
system.
May allow flue gases to enter the house.
Asphyxiation Risk.