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13
Maximum and Minimum Vent Lengths for Residential
NOTICE: The mixing of 2" and 3"
vent pipe is not recommended.
If 3" pipe is used, a 2" to 3" bell
coupling is recommended at the
rubber coupling.
This water heater is supplied with
a two-inch Schedule 40 PVC 45°
vent terminal. If you decide to vent
with 3" pipe, a Schedule 40 PVC
45° vent terminal must be used.
For your convenience screens for
both 2" and 3" vent terminals have
been included.
Venting information for 2” Vents*
Venting information for 3” Vents**
* For the 2” vent, one 90° elbow is approximately equal to 6 feet of pipe. One
45° elbow is approximately equal to 3 feet of pipe.
** For the 3” vent, one 90° elbow is approximately equal to 5 feet of pipe.
One 45° elbow is approximately equal to 2.5 feet of pipe.
Safety Instructions Installation Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Customer Service
Minimum vent length for 2” vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and three (3) feet of horizontal 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.
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
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’
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’
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