Honeywell PDX275T*F(BN,SX,CX), PDX75S70F(B,S,C)*(N,X) Vent Tables, PDX Series, Specifications

PDX Series

Specifications

Vent Tables

Part II-Venting Specifications for:

40Gallon

50Gallon

IMPORTANT

The minimum equivalent length for the exhaust portion of the vent is 7 feet. The maximum equivalent vent length for the exhaust is 35 feet for 2" diameter pipe and 85 feet for 3" diameter pipe. The intake portion of the vent must be equal to or less than the vent length of the exhaust. The tables below are provided for your quick reference, some installations may require a greater number of elbows. When calculating equivalent vent length, one 90° elbow is equivalent to 5 feet.

VENT CONNECTOR LENGTHS FOR 2" (5.1 cm) DIAMETER VENT PIPE

	# of	Maximum	Minimum
Terminating	Elbows	straight	straight
	(excl. vent
		Length ft (m)	Length ft (m)
	term.)
Through the Wall	1	30 (9.1)	2 (.6)
Through the Wall	2	25 (7.6)	2 (.6)
Through the Wall	3	20 (6.1)	2 (.6)
Through the Wall	4	15 (4.6)	2 (.6)
Through the Roof	0	35 (9.1)	7 (2.1)
Through the Roof	1	30 (9.1)	7 (2.1)
Through the Roof	2	25 (7.6)	7 (2.1)
Through the Roof	3	20 (6.1)	7 (2.1)

VENT CONNECTOR LENGTHS FOR 3" (7.6 cm) DIAMETER VENT PIPE

	# of	Maximum	Maximum
Terminating	Elbows	straight	straight
	(excl. vent
		Length ft (m)	Length ft (m)
	term.)
Through the Wall	1	80 (24.4)	10 (3.1)
Through the Wall	2	75 (22.9)	10 (3.1)
Through the Wall	3	70 (21.3)	10 (3.1)
Through the Wall	4	65 (19.8)	10 (3.1)
Through the Roof	5	60 (18.3)	10 (3.1)

Through the Roof	0	85 (29.9)	15 (4.6)
Through the Roof	1	80 (24.4)	15 (4.6)
Through the Roof	2	75 (22.9)	15 (4.6)
Through the Roof	3	70 (22.3)	15 (4.6)
Through the Roof	4	65 (19.8)	15 (4.6)

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