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TREKKER FS
F. Equivalent Feet of Pipe
The table below can help you calculate the equivalent feet
of pipe which is a method used to determine pellet vent
size (Figure 16.1).
2 ft.
3 ft.
2 ft.
Figure 16.1
G. Pipe Selection Chart
The chart will help you in determining proper venting
size according to the equivalent feet of pipe calculated
previously and the altitude above sea level of this
installation (Figure 16.2).
1. Locate the calculated equivalent feet of pipe on the
vertical left side of the chart.
2. Move to the right horizontally on the chart until you
reach your altitude above sea level.
3. If you fall below the diagonal line, 3 or 4 inch (76 to
102mm) pipe may be used.
4. If it is anywhere above the diagonal line, a 4 inch
(102mm) diameter pipe is required.
NOTICE
•
A 90° elbow is 5 times as restrictive to the flow of
exhaust gases under positive pressure as 1 foot
(305mm) of horizontal pipe.
•
A foot of horizontal pipe is twice as restrictive as a
foot of vertical pipe.
WARNING
Risk of Fire!
•
Only LISTED venting components may be
used.
•
NO OTHER vent components may be
used.
•
Substitute or damaged vent components
may impair safe operation.
16
Example of 3 Elbow-Rear Vent Termination Calculation
Pellet
Venting
Component
90° Elbow or
Tee
45° Elbow
Horizontal
Pipe
Vertical Pipe
NOTE: This is a generic example and is not intended to represent any specific
2 ft.
fuel type.
Vent surfaces get HOT, can cause burns
if touched. Non-combustible shielding or
guards may be required.
# of
Feet
Multiplied
Elbows
of
By
Pipe
3
X
X
7
X
2
X
30
Example 1
20
Equivalent Pipe
Length In Feet
Example 2
10
3 in. or 4 in. (76mm or 102mm) Diameter Pipe
0
Figure 16.2
Example 1: If the equivalent length of pipe is 23 feet (7m)
with altitude of 8,000 feet (2438m) you must use
4 inch (102mm) diameter type "L" or "PL" vent.
Example 2: If the equivalent length of pipe is 12 feet (3.7m)
with altitude of 6,000 feet (1829m) you may use 3
or 4 inch (76 to 102mm) diameter type "L" or "PL"
vent.
Risk of Injury or Property Damage.
•
Improper installation, adjustment, alteration,
service or maintenance can cause injury or
property damage.
•
Refer to the owner's information manual
provided with this appliance.
•
For assistance or additional information
consult a qualified installer, service agency
or your dealer.
7080-165D
WARNING
Equivalent
Components
Feet
Equivalent
5
3
1
0.5
Total Equivalent Feet
4 in. (102mm) Diameter Pipe Only
1
2
3
4
5
6
7
ALTITUDE IN THOUSANDS OF FEET
WARNING
September 24, 2018
Feet
15
7
1
23
8
9
10
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