TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT)
ALTITUDE
UNIT
SIZE
TERMINATION
TYPE
PIPE DIAMETER
(IN.)*
NUMBER OF 90° ELBOWS
1
2
3
4
5
6
0 to 2000
042040
2 Pipe or 2-In.
Concentric
1-1/2
50
45
40
35
30
25
2
70
70
70
70
70
70
042060
2 Pipe or 2-In.
Concentric
1-1/2
50
45
40
35
30
25
2
70
70
70
70
70
70
042080
060080
2 Pipe or 2-In.
Concentric
1-1/2
30
25
20
15
10
5
2
70
70
70
70
70
70
060100
2 Pipe or 2-In.
Concentric
2
45
40
35
30
25
20
2-1/2
70
70
70
70
70
70
060120
2 Pipe or 3-In.
Concentric
2-1/2
10
NA
NA
NA
NA
NA
3
35
30
15
NA
NA
NA
3†
70
70
70
70
70
70
Altitude
Unit
Size
Termination
Type
Pipe Diameter
(In.)*
Number of 90° Elbows
1
2
3
4
5
6
2001 to 3000
042040
2 Pipe or 2-In.
Concentric
1-1/2
45
40
35
30
25
20
2
70
70
70
70
70
70
042060
2 Pipe or 2-In.
Concentric
1-1/2
45
40
35
30
25
20
2
70
70
70
70
70
70
042080
060080
2 Pipe or 2-In.
Concentric
1-1/2
26
21
16
11
6
NA
2
70
70
70
70
70
70
060100
2 Pipe or 2-In.
Concentric
2
40
35
30
25
20
15
2-1/2
70
70
70
70
70
70
060120
2 Pipe or 3-In.
Concentric
3
31
26
12
NA
NA
NA
3†
63
62
62
61
61
61
Altitude
Unit
Size
Termination
Type
Pipe Diameter
(In.)*
Number of 90° Elbows
1
2
3
4
5
6
3001 to 4000
042040
2 Pipe or 2-In.
Concentric
1-1/2
42
37
32
27
22
17
2
70
70
70
70
70
70
042060
2 Pipe or 2-In.
Concentric
1-1/2
42
37
32
27
22
17
2
70
70
70
70
70
70
042080
060080
2 Pipe or 2-In.
Concentric
1-1/2
25
20
15
10
5
NA
2
70
70
70
70
70
70
060100
2 Pipe or 2-In.
Concentric
2
38
33
28
23
18
13
2-1/2
70
70
70
70
70
70
060120
2 Pipe or 3-In.
Concentric
3
29
24
10
NA
NA
NA
3†
59
59
58
57
57
56
Altitude
Unit
Size
Termination
Type
Pipe Diameter
(In.)*
Number of 90° Elbows
1
2
3
4
5
6
4001 to 5000‡
042040
2 Pipe or 2-In.
Concentric
1-1/2
40
35
30
25
20
15
2
70
70
70
70
70
70
042060
2 Pipe or 2-In.
Concentric
1-1/2
40
35
30
25
20
15
2
70
70
70
70
70
70
042080
060080
2 Pipe or 2-In.
Concentric
1-1/2
23
18
13
8
NA
NA
2
70
70
70
70
70
68
060100
2 Pipe or 2-In.
Concentric
2
36
31
26
21
16
11
2-1/2
70
70
70
70
70
70
060120
2 Pipe or 3-In.
Concentric
3†
56
55
54
53
52
52
Altitude
Unit
Size
Termination
Type
Pipe Diameter
(In.)*
Number of 90° Elbows
1
2
3
4
5
6
5001 to 6000‡
042040
2 Pipe or 2-In.
Concentric
1-1/2
37
32
27
22
17
12
2
70
70
70
70
70
70
042060
2 Pipe or 2-In.
Concentric
1-1/2
37
32
27
22
17
12
2
70
70
70
70
70
70
042080
060080
2 Pipe or 2-In.
Concentric
1-1/2
22
17
12
7
NA
NA
2
70
70
70
70
68
63
060100
2 Pipe or 2-In.
Concentric
2
33
28
23
18
13
8
2-1/2
70
70
70
70
70
70
060120
2 Pipe or 3-In.
Concentric
3†
53
52
50
49
48
47
See notes on next page.
—29—
Summary of Contents for CONDENSING GAS FURNACE 355MAV
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