Installation – Lennox Hearth T300P User Manual

Page 12

Advertising
background image

INSTALLATION

Page 12

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
Pipe

# of Elbows
or Feet of
pipe

Equivalent

Feet

Total
Equivalent
Feet

90

o

Elbows

x 5 Ft. (1.5M)

45

o

Elbows

x

3 Ft. (1M)

Horizontal
Pipe

x

1 Ft. (.3M)

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
Pipe

# of El-
bows or
Feet of
pipe

Equivalent

Feet

Total
Equiva-
lent Feet

90

o

Elbows /

Tee (A & G)

2

x 5 Ft. (1.5M)

10 (3M)

45

o

Elbows (C)

1

x 3 Ft. (1M)

3 (1M)

Horizontal
pipe (B & F)

3

x 1 Ft. (.3M)

3 (1M)

Vertical pipe
(E)

8

x .5 Ft. (.15M)

4 (1.2M)

Total = 20


PIPE SELECTION CHART

0 1 2 3 4 5 6 7 8 9 10

Altitude x 1000 Feet

4 “ Diameter Only

3 or 4”

Diameter

30

20

10

0

Equiv

al

en

t Pipe

Le

ngth (Fe

et)

Advertising