Lennox Hearth T300P operation manual Installation, Determining Size Of Pipe To Install

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)
45o Elbows		x	3	Ft. (1M)
Horizontal		x	1	Ft. (.3M)
Pipe
Vertical Pipe		x	.5 Ft.
			(.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 to the right are standard for all freestanding models.

SAMPLE INSTALLATION CHART

Type of

# of El-

Equivalent

Total

Pipe

bows or

Feet

Equiva-

Feet of

lent Feet

pipe

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)

pipe (B & F)

Vertical pipe

8

x

.5 Ft. (.15M)

4 (1.2M)

(E)

Total = 20

PIPE SELECTION CHART

(Feet)

30

4 “ Diameter Only

Length

20

Pipe

3 or 4”

10

Diameter

Equivalent

0

1

2

3

4

5

6

7

8

9

10

0

Altitude x 1000 Feet

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