NTI TRX II Series Installation Quick Manual page 7

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Venting
2" or 3" Venting
EN - Installation Quick Guide
STEP 2 Installing
Friction Loss Equivalent in Piping and Fittings
Fittings or Piping
90 Degree Elbow*
45 Degree Elbow
Coupling
One Foot of Straight Pipe
Concentric Kit
V Series Vent Kit
AL29-4C Vent Terminal
Table 4 - *Friction loss for long radius elbow is
1foot less.
NOTE: Consult Polypropylene venting instructions for
friction loss and pressure drop equivalents.
Minimum - Maximum Vent Run Lengths
Diameter
Intake Air Pipe Run
Exhaust Vent Run
Table 3 - Minimum - Maximum Vent Runs
Equivalent Feet
2" or 3"
5'
3'
0'
1'
3'
1'
1'
2" 3"
0 - 100 feet 0 - 150 feet
6 - 100 feet 6 - 150 feet
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