Quadra-Fire MTV-E2-CSB Installation Manual - page 13
March 14, 2014
7080-131B
13
MT VERNON E2
F. Equivalent Feet of Pipe
Thetablebelowcanhelpyoucalculatetheequivalentfeet
ofpipewhichisamethodusedtodeterminepelletventsize.
Figure 13.1.
2 ft.
2 ft.
3 ft.
2 ft.
Example of 3 Elbow-Rear Vent Termination Calculation
Pellet Venting
Component
# of
Elbows
Feet of
Pipe
Multiplied
By
Equivalent
Feet
Components
Equivalent Feet
90
o
ElboworTee
3
X
5
15
45
o
Elbow
X
3
Horizontal Pipe
7
X
1
7
Vertical Pipe
2
X
0.5
1
TotalEquivalentFeet
23
Note:Thisisagenericexampleandisnot
intendedtorepresentanyspecificfueltype.
VentsurfacesgetHOT,cancauseburnsif
touched.Non-combustibleshieldingorguards
mayberequired.
WARNING
Figure 13.2
3 in. or 4 in. (76mm or 102mm) Diameter Pipe
Equivalent Pipe
Length In Feet
ALTITUDE IN THOUSANDS OF FEET
0
20
30
1 2 3 4 5 6 7 8 9 10
4 in. (102mm) Diameter Pipe Only
10
Example 1
Example 2
Example 1:Iftheequivalentlengthofpipeis23feet(7m)with
altitudeof8,000feet(2438m)youmustuse4inch(102mm)
diametertype“L”or“PL”vent.
Example 2:Iftheequivalentlengthofpipeis12feet(3.7m)
withaltitudeof6,000feet(1829m)youmayuse3or4inch
(76to102mm)diametertype“L”or“PL”vent.
G. Pipe Selection Chart
Thechartwillhelpyouindeterminingproperventingsize
accordingtotheequivalentfeetofpipecalculatedpreviously
andthealtitudeabovesealevelofthisinstallation.
Figure 13.2
a. Locatethecalculatedequivalentfeetofpipeonthevertical
left side of the chart.
b. Movetotherighthorizontallyonthechartuntilyoureach
youraltitudeabovesealevel.
c. Ifyoufallbelowthediagonalline,3or4inch(76to102mm)
pipemaybeused.
d. Ifitisanywhereabovethediagonalline,a4inch(102mm)
diameterpipeisrequired.
NOTICE:
• A90°elbowis5timesasrestrictivetotheflowofexhaust
gasesunderpositivepressureas1foot(305mm)ofhori-
zontal pipe.
• Afootofhorizontalpipeistwiceasrestrictiveasafootof
verticalpipe.
WARNING
RISK OF INJURY OR PROPERTY DAMAGE!
• Improperinstallation,adjustment,alteration,serviceormain-
tenancecancauseinjuryorpropertydamage.
• Refertotheowner’sinformationmanualprovidedwiththis
appliance.
• Forassistanceoradditionalinformationconsultaqualified
installer,serviceagencyoryourdealer.
Risk of Fire!
•OnlyLISTEDventingcomponentsmaybeused.
•NOOTHERventcomponentsmaybeused.
•Substituteordamagedventcomponentsmay
impair safe operation.
WARNING
Figure 13.1