Bryant 925TA - Page 50

50
NOTE: Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows.
Use Table 16 - Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application.
Table 15 – Maximum Equivalent Vent Length -- Ft./In.
Unit Size
40,000
Outlet choke
required under
10 ft. TEVL
60,000 80,000 100,000 120,000 140,000
Altitude (feet)
Pipe Dia. (in) 1½ 2 2½ 1½ 2 2½ 3 1½ 2 2½ 3 4 2 2½ 3 4 2½ 3 4 2½ 3 4
0-2000 40 155 185
20
100 175 200 15 50 130 175 200 20 80 175 200
10
75 185 5 65 155
2001-3000 35 150 175 95 165 185
10
45
125 165 185
15 75
165 185 70 175
N/A
60
140
3001-4000 30 135 160
15
90 155 175 115 155 175
155
175 5 65 165 120
4001-4500
25
130 155 85 150 170
40 110
150 165
10
70 170
N/A
60
160
50 110
4501-5000 125 145 80 165 145 160
65
150 165 45 100
5001-6000 20 120 130 75 140 155 35 100 135 150 140 155 155 35 80
6001-7000 15 110 120
10
70 130 145
N/A
30 90
125 140 60 135 145 50 140 30 65
7001-8000
10
100 110 65 120 135 120 125
N/A
55 125 135 45 130 25 45
8001-9000 90 95 5 60 115 125 25 80 110 115 50 115 125 40 120 15 30
9001-10000 5 80 85 N/A 55 105 115 20 75 100 105 45 100 115 30 115 10 15
Maximum Equivalent Vent Length -- Meters/MM
Sgl Stg 95%, All Two Stage - Metric
Unit Size
40,000
Outlet choke
required under
10 ft. TEVL
60,000 80,000 100,000 120,000 140,000
Altitude (meters)
Pipe Dia.
(mm)
38 51 64 38 51 64 76 38 51 64 76 102 51 64 76 102 64 76 102 64 76 102
0-610 11 57 57
6.5
31 54 61 3 16 40 54 61 6 25 54 61
3
23 57 1.5 21 48
611-914 10 53 53 29 51 57
2
15
38 51 57
5
23 51 57 21 54
N/A
18
42
915-1219 9 49 49
5
27 48 54 36 48 53
48
54 1.5 20 51 36
1220-1370
8
47 47 26
46
52
13 34
46 51
3
22 52
N/A
19
50
16 33
1371-1524 45 45 24 51 45 50 21 46 51 14 31
1525-1829 6 41 41 22 43 47 11 31 42 46 43 48 48 11 25
1830-2134 5 37 37
3
25 40 44
N/A
10 27
39 42 19 41 45 16 43 9 20
2135-2438
3.5
33 34 20 37 42 36 39
N/A
18 38 42 14 40 7 15
2439-2743 30 30 1.5 19 35 38 8 26 34 36 15 36 39 13 38 5 10
2744-3048 1.5 26 26 N/A 17 33 36 7 24 31 33 14 34 36 12 35 3.5 5
Long
Medium
Mitered
Concentric
Standard 2-in., 3-in., or
optional 4-in. termination.
ELBOW CONFIGURATIONS
VENT TERMINAL CONFIGURATIONS
A13110
Table 16 – Deductions from Maximum Equivalent Vent Length -- Ft. (M)
Pipe Diameter (in): 1-1/2 2 2-1/2 3 4
Mitered 90º Elbow 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4) 8 (2.4)
Medium Radius 90º Elbow 5 (1.5) 5 (1.5) 5 (1.5) 5 (1.5) 5 (1.5)
Long Radius 90º Elbow 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9) 3 (0.9)
Mitered 45º Elbow 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2) 4 (1.2)
Medium Radius 45º Elbow 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8) 2.5 (0.8)
Long Radius 45º Elbow 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5) 1.5 (0.5)
Tee 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9) 16 (4.9)
Concentric Vent Termination NA 0 (0.0) NA 0 (0.0) NA
Standard Vent Termination 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0)
925TA