Placement And Installation; Outdoor Termination Kits And Corresponding Equivalencies - Lennox G71MPP SERIES Unit Information

II−PLACEMENT AND INSTALLATION

OUTDOOR TERMINATION KITS AND CORRESPONDING EQUIVALENCIES

Outdoor Ex-
haust Accel-
VENT
erator
PIPE
UNIT
DIA. (Dia. X
MODEL
(in.)
Length)
1−1/2" X 12"
2 4
2−1/2 5
36B−070
3 8
4 14
Not
2
Allowed
Not
2−1/2
Allowed
60C−090
Not
3
Allowed
Not
4
Allowed
Not
2−1/2
Allowed
Not
3
60C−110
Allowed
Not
4
Allowed
Not
3
Allowed
60D−135
Not
4
Allowed
*Requires field−provided and installed 1−1/2" exhaust accelerator.
Step 1 Proposed vent pipe size : ______
Step 2 Termination kit catalog number : _____________
Vent pipe equivalency value from table 34: ______
Step 3 Total number of 90° elbows required (indoors and outdoors)
______ X 5 = ______ equivalent feet of pipe
Step 4 Total number of 45° elbows required (indoors and outdoors)
______ X 2.5 = ______ equivalent feet of pipe
Step 5 Linear feet of straight pipe required : ______
Add equivalent feet of vent pipe listed in
Step 6
steps 2 through 5.
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.
TABLE 34
Vent Pipe Length Equivalency (feet)
Outdoor Ex-
haust Accel- 1−1/2"
erator
Concentric Concentric
(Dia. X Kit
Length)
2" X 12" 71M80
Not
12
Allowed
Not
15
Allowed
Not
24
Allowed
Not
42
Allowed
Not
1
Allowed
Not
2
Allowed
Not
2
Allowed
Not
4
Allowed
Not
2
Allowed
Not
2
Allowed
Not
4
Allowed
Not
6
Allowed
Not
10
Allowed
FIGURE 16
Page 36
2" 3"
2" Wall Plate
Concentric
Kit Kit
22G44
69M29 60L46
30G28
Not Not
Allowed Allowed
Not Not
Allowed Allowed
Not Not
Allowed Allowed
Not Not
Allowed Allowed
3 3
Allowed
6 6
Allowed
6 6
Allowed
12 12
Allowed
6 6
Allowed
6 6
Allowed
12 12
Allowed
Not
15
Allowed Allowed
Not
25
Allowed Allowed
3" Wall Plate 2" Wall
Kit Kit Ring Kit
44J40
15F74
81J20
4 4*
5 5*
8 8*
14 14*
Not
1
Not
2
Not
2
Not
4
Not
2
Not
2
Not
4
Not
6
Allowed
Not
10
Allowed
Equivalent Feet
TOTAL
4
5
8
14
1**
2**
2**
4**
2
2
4
Not
Not