Determining Equivalent Pipe Length - Whitfield ADVANTAGE PLUS Owner's Manual & Operating Instructions

Determining Equivalent Pipe Length

To determine whether 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
o
90
o
45
Horizontal
Vertical
A - 90 Deg. Elbow
B- 1' Horizontal Pipe
C- 45 Degree Elbow
D- Standoff Braces
Pipe Selection Chart
30
4 INCH DIAMETER ONLY
20
10
3 OR 4 INCH DIAMETER
0
1 2 3 4 5
Altitude in Thousands of Feet
Sample Installation Chart
Type of Pipe
o
90 Elbows/Tee(A &G)
o
45 Elbows (C)
Horizontal Pipe(B&F)
Vertical Pipe(E)
Elbows
Elbows
Pipe
Pipe
E- 8' Vertical Pipe
F- 2' Horizontal Pipe
G- 90 Degree Tee
H- Wall Thimble
6 7 8 9 1 0
# of Elbows or
Feet of pipe
2
1
3
8
Equivalent Feet Total Equivalent Feet
x 5(1.5m)
x 3(1m)
x 1(.3m)
x 5(1.5m)
Equivalent Feet Total Equivalent Feet
x 5 ft. (1.5m)
x 3 ft. (1m)
x 1 ft. (.3m)
x .5 ft. (.15m)
B
A
C
D
E
F
G
H
10 (3m)
3 (1m)
3 (1m)
4 (1.2m)
TOTAL: 20