Ruud PowerVent AP14236 Use And Care Manual page 14

Installing the water heater.
Maximum and Minimum Vent Lengths for Residential
60 Gallon Power Vents ONLY
Maximum
Altitude for
Models
3" & 4"
Vents
42VP60F
7,700'
42VP60PF
NOTICE: The mixing of 3" and 4"
vent pipe is not recommended. If
4" pipe is used, a 2" to 4" reducer
fitting is recommended at the
rubber coupling.
This water heater is supplied with
a 3" Schedule 40 PVC 90° vent
terminal. When venting with 4"
pipe, a Schedule 40 PVC 90° vent
terminal must be used. Screens for
both 3" and 4" vent terminals have
been included.
14
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
Number of Number
90° elbows of 45°
with Vent Elbows
One (1) None
One (1) One (1)
Two (2) None
Two (2) One (1)
Three (3) None
** 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 4" vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 4" Vents**
Number of 90° elbows
with Vent
0-Maximum Altitude:
One (1)
One (1)
Two (2)
Two (2)
Three (3)
Three (3)
Four (4)
Four (4)
Five (5)
** For the 4" 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.
Maximum Vent Pipe
Length in Feet (ft)
0' - 2,000'
See Maximum Altitude
45
42.5
40
37.5
35
Number of
45° Elbows
See chart on upper left.
None
One (1)
None
One (1)
None
One (1)
None
One (1)
None
Maximum Vent Pipe
Length in Feet (ft)
2,001' and above.
chart on left.
35
32.5
30
27.5
25
Maximum Vent Pipe
Length in Feet (ft)
95
92.5
90
87.5
85
82.5
80
77.5
75