Ruud AP14236 Maximum Venting information for 2” Vents, Maximum Venting information for 3” Vents

Maximum and Minimum Vent Lengths for Residential 40 & 50 Gallon Power Vents ONLY

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.

		Maximum Venting information for 2” Vents*
	Maximum
	Altitude for
Models		Number of	Number	Maximum Vent Pipe	Maximum Vent Pipe
	2” & 3”	90° elbows	of 45°	Length in Feet (ft)	Length in Feet (ft)
	Vents				2,001’ and above.
		with Vent	Elbows	0’ - 2,000’
42VP40SF,					See Maximum Altitude
					chart on left.
42VP40SPF,
	5,200’
		One (1)	None	44	34
42VP50SF,
42VP50SPF		One (1)	One (1)	41	31
42VP40F,		Two (2)	None	38	28
		Two (2)	One (1)	35	25
42VP40PF,	7,700’
42VP50F,
		Three (3)	None	32	22
42VP50PF

*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 3” vent pipe is one (1) foot of vertical pipe, one (1) 90°elbow, and four (4) feet of horizontal pipe.

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.

Maximum Venting information for 3” Vents**

Number of 90° elbows	Number of	Maximum Vent Pipe
with Vent	45° Elbows	Length in Feet (ft)
0-Maximum	Altitude: See chart on upper left.
One (1)	None	95
One (1)	One (1)	92.5
Two (2)	None	90
Two (2)	One (1)	87.5
Three (3)	None	85
Three (3)	One (1)	82.5
Four (4)	None	80
Four (4)	One (1)	77.5
Five (5)	None	75

**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.

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