13
Maximum and Minimum Vent Lengths for Residential
40 & 50 Gallon Power Vents
NOTICE: The mixing of 2" and
3" vent pipe is not recommended.
If 3" pipe is used, a 2" to 3"
reducer fitting is recommended at
the rubber coupling.
This.water.heater.is.supplied.with.
a.two-inch.Schedule.40.PVC.45°.
vent.terminal ...When.venting.with.
3".pipe,.a.Schedule.40.PVC.45°.vent.
terminal.must.be.used ..Screens.for.
both.2".and.3".vent.terminals.have.
been.included .
Models
Maximum
Altitude for
2” & 3” Vents
43VP40SE2,.
43VP40SPE2,
43VP50SE2,.
43VP50SPE2
5,999’
43VP40E2,.
43VP40PE2,
43VP50E2,.
43VP50PE2
7,700’
Minimum Vent Restrictor
Vent.Pipe
Mesh
Vent.Restrictor
Vent.Terminal
Install.the.vent.restrictor.at.the.minimum.vent.lengths.
listed.above .
DO NOT
use.the.vent.restrictor.for.any.other.vent.
lengths .
Number.of.
90°.elbows.
with.Vent
Number.of
45°.Elbows
Maximum.Vent.Pipe.
Length.in.Feet.(ft)
0’.-.2,000’
Maximum.Vent.Pipe.
Length.in.Feet.(ft)
2,001’.and.above .
.
See.Maximum.Altitude.
chart.on.left
0-Maximum.Altitude:.
See.chart.on.upper.left .
One.(1)
None
95’
75’
One.(1)
One.(1)
92 .5’
72 .5’
Two.(2)
None
90’
70’
Two.(2)
One.(1)
87 .5’
67 .5’
Three.(3)
None
85’
65’
Three.(3)
One.(1)
82 .5’
62 .5’
Four.(4)
None
80’
60’
Four.(4)
One.(1)
77 .5’
57 .5’
Five.(5)
None
75’
55’
**.For.the.3”.vent,.one.90°.elbow.is.approximately.equal.to.5.feet.of.vent.
pipe ...One.45°.elbow.is.approximately.equal.to.2 .5.feet.of.vent.pipe .
Minimum vent length for 3” vent pipe is one (1) foot of vertical pipe, one
(1) 90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 3” Vents**
Maximum Venting information for 2” Vents*
*.For.the.2”.vent,.one.90°.elbow.is.approximately.equal.to.6.feet.of.vent.pipe ...
One.45°.elbow.is.approximately.equal.to.3.feet.of.vent.pipe .
Minimum vent length for 2”vent pipe is one (1) foot (30.4 cm)of vertical
pipe, one (1) 90°elbow, and three (3) feet (0.91 m) of horizontal pipe.
Number.of.
90°.elbows.
with.Vent
Number.
of
45°.
Elbows
Maximum.Vent.
Pipe.Length.in.
Feet.(ft)
0’.-.2,000’
Maximum.Vent.Pipe.
Length.in.Feet.(ft)
2,001’.and.above .
.
See.Maximum.
Altitude.chart.on.left
One.(1)
None
44’
24’
One.(1)
One.(1)
41’
21’
Two.(2)
None
38’
18’
Two.(2)
One.(1)
35’
15’
Three.(3)
None
32’
12’