Lennox Traditions Freestanding P11 Installation Instructions Manual page 18

Determining Equivalent Pipe Length
To determine w hether a 3" or 4" exhaust system is required for your installation, review the sample
installation below. Fill out the top chart, and calculate your total equivalent pipe length. After you have
the total equivalent pipe length, use the chart at the bottom of the page to determine if your installation
requires 3" or 4" exhaust pipe.
Type of Pipe # of Elbows or Feet of pipe
°
90
°
45
Horizontal
Vertical
A-
90 Deg. Elbow
B-
1' Horizontal Pipe
C- 45 Degree El bow
D-
Standoff Braces
Pipe Selection Chart
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Altitude in Thousands of F.�et
Sample lnstallat10n Chart
Type of Pipe
°
90
Elbows/Tee (A &G)
°
45
Elbows (C)
Horizontal Pipe (B&F)
Vertical Pipe (E)
Elbows
X
Elbows
X
Pipe
X
Pipe
X
E-
8' Vertical Pipe
F-
2' Horizontal Pipe
G- 90 Degree Tee
H-
Wall Thimble
=
NOTE: All equivalent pipe styles
shown to the right are standard
for the Profile and Tradition
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# of Elbows or
Feet of pipe
2
1
3
8
Page 17
Equivalent Feet Total Equivalent Feet
5(1.5m)
3{1m)
1 (.3m)
.5(.15m)
-­ D
=
· =
i.-..
,--
■
I
I=====>
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Equivalent Feet Total Equivalent Feet
5 ft. (1.5m)
X
3 ft. (1m)
X
1 ft. (.3m)
X
.5 ft. (.15m)
X
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+ :.:
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G
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10 (3m)
3 (1m)
3 (1m)
4 (1.2m)
TOTAL: 20