Rinnai HE Series How To Use Manual page 47

PVC/CPVC 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
Royal 3" Concentric Termination
6)
7) Royal Low Profile Termination
8) 3" Tee Termination
4" Tee Termination
9)
10) 3" Snorkel Termination
11) 4" Snorkel Termination
12) Length of Straight Section in feet
Note: Ensure SW 1 in DIPSW 1 is in "OFF" position if vent length is greater than 21ft (6.4m).
Equivalent Vent Length Calculation Sheet
Number of
fittings
NA
KBD Series Manual
Equivalent Vent
Length
x 5
x 2.5
5
x
x 20
x 20
20
5
x 5
5
x
x 15
x 15
Total (add up
lines 1 through
12)
Total Equivalent
Length
=
=
=
=
=
=
=
=
=
=
37