Lennox Hearth II-T C FS Determining Size Of Pipe To Install, Installation Chart, 3 or 4”

INSTALLATION

DETERMINING SIZE OF PIPE TO INSTALL

To determine what diameter pipe to use in an installation (3” or 4”), first find the “equivalent pipe length” using the follow- ing guidelines, then plot this figure and the altitude on the chart.

Fill out the installation chart, and calculate your total equivalent pipe length. After you have the total equivalent pipe length, use the Pipe Selection Chart below to determine if your installation requires 3” or 4” exhaust pipe.

INSTALLATION CHART

Type of	# of Elbows			Equivalent	Total
Pipe	or Feet of			Feet	Equivalent
	pipe				Feet
90o Elbows /		x		5 Ft. (1.5m)
Tee (A & G)
45o		x		3 Ft. (1m)
Elbows (C)
Horizontal		x		1 Ft. (.3m)
(B & F)
Vertical		x		.5 Ft.
(E)				(.15m)
A- 90 Degree Elbow			E- 8’ Vertical Pipe
B- 1’ Horizontal Pipe			F- 2’ Horizontal Pipe
C- 45 Degree Elbow			G- 90 Degree Tee
D- Standoff Braces
H- Wall Thimble

NOTE: All equivalent pipe styles shown below are stan- dard for all freestanding models.

SAMPLE INSTALLATION CHART

Type of	# of Elbows		Equivalent	Total
Pipe	or Feet of		Feet	Equivalent
	pipe			Feet
90o Elbows /	2	x	5 Ft. (1.5m)	10 (3m)
Tee (A & G)
45o	1	x	3 Ft. (1m)	3	(1m)
Elbows (C)
Horizontal	3	x	1 Ft. (.3m)	3	(1m)
(B & F)
Vertical	8	x	.5 Ft. (.15m)	4	(1.2m)
(E)
				Total = 20

PIPE SELECTION CHART
(Feet)	30
							4 “ Diameter Only
Length	20
				3 or 4”
Pipe
	10		Diameter
Equivalent	0	0	1	2	3	4	5		6	7	8	9	10

Altitude x 1000 Feet

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