Lennox G71MPP SERIES Unit Information

Page 36
II−PLACEMENT AND INSTALLATION
TABLE 34
OUTDOOR TERMINATION KITS AND CORRESPONDING EQUIVALENCIES
UNIT
MODEL
VENT
PIPE
DIA.
(in.)
Vent Pipe Length Equivalency (feet)
Outdoor Ex-
haust Accel-
erator
(Dia. X
Length)
Outdoor Ex-
haust Accel-
erator
(Dia. X
Length)
1−1/2"
Concentric
Kit
2"
Concentric
Kit
3"
Concentric
Kit
2" Wall Plate
Kit
3" Wall Plate
Kit
2" Wall
Ring Kit
1−1/2" X 12"
2" X 12" 71M80 69M29 60L46
22G44
30G28
44J40
81J20
15F74
36B−070
2 4
Not
Allowed
12
Not
Allowed
Not
Allowed
4 4* 4
2−1/2 5
Not
Allowed
15
Not
Allowed
Not
Allowed
5 5* 5
3 8
Not
Allowed
24
Not
Allowed
Not
Allowed
8 8* 8
4 14
Not
Allowed
42
Not
Allowed
Not
Allowed
14 14* 14
60C−090
2
Not
Allowed
1
Not
Allowed
3 3
Not
Allowed
1 1**
2−1/2
Not
Allowed
2
Not
Allowed
6 6
Not
Allowed
2 2**
3
Not
Allowed
2
Not
Allowed
6 6
Not
Allowed
2 2**
4
Not
Allowed
4
Not
Allowed
12 12
Not
Allowed
4 4**
60C−110
2−1/2
Not
Allowed
2
Not
Allowed
6 6
Not
Allowed
2 2
3
Not
Allowed
2
Not
Allowed
6 6
Not
Allowed
2 2
4
Not
Allowed
4
Not
Allowed
12 12
Not
Allowed
4 4
60D−135
3
Not
Allowed
6
Not
Allowed
Not
Allowed
15
Not
Allowed
6
Not
Allowed
4
Not
Allowed
10
Not
Allowed
Not
Allowed
25
Not
Allowed
10
Not
Allowed
*Requires field−provided and installed 1−1/2" exhaust accelerator.
Proposed vent pipe size : ______
Termination kit catalog number : _____________
Vent pipe equivalency value from table 34: ______
Total number of 90° elbows required (indoors and outdoors)
______ X 5 = ______ equivalent feet of pipe
Total number of 45° elbows required (indoors and outdoors)
______ X 2.5 = ______ equivalent feet of pipe
Linear feet of straight pipe required : ______
Add equivalent feet of vent pipe listed in
steps 2 through 5.
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
If the total is equal to, or less than, the allowable maximum given in table 36, the proposed pipe size is acceptable. If the
total exceeds the maximum allowed vent pipe length, repeat the process above using the next larger diameter pipe until
an acceptable total is achieved.
NOTE − In Direct Vent systems, total the equivalent length of either the exhaust OR intake piping run, depending upon which
will be LONGER. Intake and exhaust pipe diameter must be the same size and must be terminated in the same pressure
zone. Intake and exhaust pipe should be roughly the same length.
Equivalent Feet
TOTAL
FIGURE 16

Lennox G71MPP SERIES Specifications

General

Brand	Lennox
Model	G71MPP SERIES
Category	Furnace
Language	English