Vent Length Calculation Sheet - Rinnai RU80i Manual

Equivalent Vent Length Calculation Sheet
Fitting / Termination Type
1) 90 elbow
2) 45 elbow
3) IPEX Low Profile Termination
4) IPEX 4" Concentric Termination
5) IPEX 3" Concentric Termination
3" Tee Termination
6)
4" Tee Termination
7)
8) 3" Snorkel Termination
9) 4" Snorkel Termination
10) Length of Straight Section in feet
Note: Ensure switch #1 in the tan bank of dip switches is in OFF position if vent length is greater than 21ft (6.4m).
Number of
fittings
x
x
x
x
x
x
x
x
x
NA
25
Equivalent Vent Total Equivalent
Length
5
=
2.5
=
5
=
20
=
20
=
5
=
5
=
10
=
10
=
40
=
Total (add up
lines 1 through
Length