916SA: Product Data
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
12
MAXIMUM EQUIVALENT VENT LENGTH - Ft. (M)
NOTE:
Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows. Use Deductions
from Maximum Equivalent Vent Length to determine allowable vent length for each application.
1. 40K Inducer Outlet Restrictor disk (P/N 337683-401; 1.25-in. (32 mm) Dia.) shipped in the loose parts bag or available through Replacement Components required under 10-ft. (3 M)
TEVL in all orientations. Required for installations from 0 - 2000 ft. (0 to 610 M) above sea level. Failure to use an outlet restrictor may result in flame disturbances or flame sense
lock-out.
2. 26K (shipped in loose parts bag) & 60K Inducer Outlet Restrictor disk (P/N 337683-401; 1.25-in. (32 mm) Dia. available through Replacement Components) required for less than 5-ft.
(1.5 M) TEVL in downflow and horizontal orientations only. Required for installations from 0 - 2000 ft. (0 to 610 M) above sea level.
3.
120K & 140K Inducer Outlet Restrictor disk (P/N
337683-402
; 1.50-in. (38 mm) Dia. available through
Replacement Components
) required for less than 5-ft. (1.5 M) TEVL in downflow
and horizontal orientations only. Required for installations from 0 - 2000 ft. (0 to 610 M) above sea level.
A13110
Deductions from Maximum Equivalent Vent Length - Ft. (M)
NOTE:
1. Use only the smallest diameter pipe possible for venting. Over-sizing may cause flame disturbance or excessive vent terminal icing or freeze-up.
2. NA - Not allowed. Pressure switch will not close, or flame disturbance may result.
3. Vent sizing for Canadian installations over 4500 ft (1370 M) above sea level are subject to acceptance by local authorities having jurisdiction.
4. Size both the combustion air and vent pipe independently, then use the larger size for both pipes.
5. Assume the two 45
_
elbows equal one 90
_
elbow. Wide radius elbows are desirable and may be required in some cases.
6. Elbow and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
7. The minimum pipe length is 5 ft. (2 M) linear feet (meters) for all applications.
8. Use 3-in. (76 mm) diameter vent termination kit for installations requiring 4-in. (102 mm) diameter pipe
Unit Size
26,000
2
40,000
1
60,000
2
80,000
100,000
3
120,000
140,000
3
Altitude
(feet)
Pipe Dia.
(in)
1 ½
2
1 ½
2
2 ½
1
½
2
2 ½
3
1 ½
2
2 ½
3
4
2
2 ½
3
4
2 ½
3
4
2 ½
3
4
0-2000
70
200
40
155
185
20
100
175
200
15
55
130 175 200 20
80
175 200
10
75
185 5
65
155
2001-3000 65
190
35
150
175
95
165
185
10
49
125 165 185 15 75 165 185
70
175
N/A
60
140
3001-4000 60
175
30
135
160
16
90
155
175
115 155 175
155 175
5
65
165
120
4001-4500 55
160
25
130
155
15
85
150
170
44
110 150 165
10
70
170
N/A
60
160
50
110
4501-5000
125
145
80
145
165
145 160
65
150 165
45
100
5001-6000 50
145
20
120
130
75
140
155
41
100 135 150
140 155
155
35
80
6001-7000 45
135
15
110
120
13
70
130
145
N/A
38
90
125 140
60
135 145
50
140
30
65
7001-8000 40
120
10
100
110
10
65
120
135
36
120 125
N/
A
55
125 135
46
130
25
45
8001-9000 35
110
90
95
5
60
115
125
33
80
110 115
50
115 125
43
120
15
30
9001-10000 30
95
5
80
85
N/
A
55
105
115
30
75
100 105
45
100 115
39
115
10
15
Maximum Equivalent Vent Length - Meters
Unit Size
26,000
2
40,000
1
60,000
2
80,000
100,000
3
120,000
140,000
3
Altitude
(meters)
Pipe Dia.
(mm)
38
51
38
51
64
38
51
64
76
38
51
64
76
102 51
64
76
102
64
76
102 64
76
102
0-610
21.3 60.9 12.1
47.2
56.3
6.0 30.4 53.3 60.9 4.5 16.7 39.6 53.3 60.9 6.0 24.3 53.3 60.9 3.0 22.8 56.3 1.5
19.8 47.2
611-914
19.8 57.9 10.6
45.7
53.3
28.9 50.2 56.3
3.0
14.9 38.1 50.2 56.3 4.5 22.8 50.2 56.3
21.3 53.3
NA
18.2 42.6
915-1219
18.2 53.3
9.1
41.1
48.7
4.8 27.4 47.2 53.3
35.0 47.2 53.3
47.2 53.3 1.5 19.8 50.2
36.5
1220-1370 16.7 48.7
7.6
39.6
47.2
4.5
25.9 45.7 51.8
13.4 33.5 45.7 50.2
3.0
21.3
51.8
NA
18.2 48.7
15.2 33.5
1371-1524
38.1
44.1
24.3 44.1 50.2
44.1 48.7
19.8 45.7 50.2
13.7 30.4
1525-1829 15.2 44.1
6.0
36.5
39.6
22.8 42.6 47.2
12.4 30.4 41.1 45.7
42.6 47.2
47.2
10.6 24.3
1830-2134 13.7 41.1
4.5
33.5
36.5
3.9 21.3 39.6 44.1
NA
11.5 27.4 38.1 42.6
18.2 41.1 44.1
15.2 42.6
9.1
19.8
2135-2438 12.1 36.5
3.0
30.4
33.5
3.0 19.8 36.5 41.1
10.9
36.5 38.1
NA
16.7 38.1 41.1
14.0 39.6
7.6
13.7
2439-2743 10.6 33.5
27.4
28.9
1.5 18.2 35.0 38.1
10.0 24.3 33.5 35.0
15.2 35.0 38.1
13.1 36.5
4.5
9.1
2744-3048 9.1
28.9
1.5
24.3
25.9
NA 16.7 32.0 35.0
9.1 22.8 30.4 32.0
13.7 30.4 35.0
11.8 35.0
3.0
4.5
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)
Long
Medium
Mitered
Concentric
Standard 2-in., 3-in., or
optional 4-in. termination.
ELBOW CONFIGURATIONS
VENT TERMINAL CONFIGURATIONS
