Carrier N92ESN Installation, Start-Up, Operating And Service And Maintenance Instructions page 39

N92ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
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.
Unit Size
Pipe Dia. (in) 1 ½
0-2000 20
2001-3000
15
3001-4000
4001-4500
Altitude
4501-5000 10
(feet)
5001-6000
6001-7000
5
7001-8000
8001-9000
N/A
9001-10000
Unit Size
Pipe Dia. (mm) 38
0-610 6.0
611-914
4.5
915-1219
1220-1370
Altitude
1371-1524 3.0
(meters)
1525-1829
1830-2134
1.5
2135-2438
2439-2743
N/A
2744-3048
1. Inducer Outlet Restrictor disk (P/N 1185623; 1.25-in. (32 mm) Dia.) shipped in the loose parts bag or available through FAST Parts required under 10-ft. (3 M) TEVL in all orientations.
Required for installations from 0 - 2000 (0 to 610 M) above sea level. Failure to use an outlet restrictor may result in flame disturbances or flame sense lock-out.
2. Inducer Outlet Restrictor disk (P/N 1185623; 1.25-in. (32 mm) Dia.) available through FAST Parts required for no greater than 5-ft. (1.5 M) TEVL in downflow and horizontal orientations
only. Required for installations from 0 - 2000 (0 to 610 M) above sea level.
3. Inducer Outlet Restrictor disk (P/N 1188589; 1.50-in. (38 mm) Dia.) available through FAST Parts required for no greater than 5-ft. (1.5 M) TEVL in downflow and horizontal orientations
only. Required for installations from 0 - 2000 (0 to 610 M) above sea level.
Long
Pipe Diameter (in):
Mitered 90º Elbow
Medium Radius 90º Elbow
Long Radius 90º Elbow
Mitered 45º Elbow
Medium Radius 45º Elbow
Long Radius 45º Elbow
Tee
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 the 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.
9. A running Tee in the Combustion Air Pipe adds 0 ft. to the TEVL of the vent length.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 13 – Maximum Equivalent Vent Length
Single Stage 92% - Ft.
1 2
40,000 60,000
2 2 ½ 1 ½ 2 2 ½
85 185 100 175
20
80 175 95 165
160 16 90 155
70 155 85
150
145 15 80
60 130 75 140
55 120 13 70 130
50 110 10 65 120
30 95 5 60 115
25 85 N/A 55 105
Single Stage 92% - Meters
1 2
40,000 60,000
51 64 38 5 64
25.9 56.3 30.4 53.3
6.0
24.3 53.3 28.9 50.2
48.7 4.8 27.4 47.2
21.3 47.2 25.9
45.7
44.1 4.5 24.3
18.2 39.6 22.8 42.6
16.7 36.5 3.9 21.3 39.6
15.2 33.5 3.0 19.8 36.5
9.1 28.9 1.5 18.2 35.0
7.6 25.9 N/A 16.7 32.0
ELBOW CONFIGURATIONS
Medium
Mitered
Table 14 – Deductions from Maximum Equivalent Vent Length - Ft. (M)
1-1/2
8 (2.4)
5 (1.5)
3 (0.9)
4 (1.2)
2.5 (0.8)
1.5 (0.5)
16 (4.9)
80,000
3 1 ½ 2 2 ½ 3
200 15 55 130 175
185 125 165
49
175 115 155
170 10 150
44 110
165 145
155 41 100 135
145 38 125
90
135 36 120
N/A
125 33 80 110
115 30 75 100
80,000
76 38 51 64 76
60.9 4.5 16.7 39.6 53.3
56.3 38.1 50.2
14.9
53.3 35.0 47.2
51.8 3.0 33.5 45.7
13.4
50.2 0.0 44.1
47.2 12.4 30.4 41.1
44.1 11.5 27.4 .1
41.1 10.9 0.0 36.5
N/A
38.1 10.0 24.3 33.5
35.0 9.1 22.8 30.4
VENT TERMINAL CONFIGURATIONS
Concentric
2 2-1/2
8 (2.4) 8
5 (1.5) 5
3 (0.9) 3
4 (1.2) 4
2.5 (0.8) 2.5
1.5 (0.5) 1.5
16 (4.9) 16
39
3
100,000
4 2 2 ½ 3 4
200 20 80 175 200
185 165 185
15 75
175 175
155
165 70 170
160 150 165
10 65
150 140 155
140 60 135 145
125 55 125 135
115 N/A 50 115 125
105 45 100 115
3
100,000
102 51 64 76 102
60.9 6.0 24.3 53.3 60.9
56.3 22.8 50.2 56.3
4.5
53.3 0.0 53.3
47.2
50.2 21.3 51.8
48.7 19.8 45.7 50.2
3.0
45.7 0.0 42.6 47.2
42.6 18.2 41.1 44.1
38.1 16.7 38.1 41.1
35.0 N/A 15.2 35.0 38.1
32.0 13.7 30.4 35.0
Standard 2-in., 3-in., or
optional 4-in. termination.
3
(2.4) 8 (2.4)
(1.5) 5 (1.5)
(0.9) 3 (0.9)
(1.2) 4 (1.2)
(0.8) 2.5 (0.8)
(0.5) 1.5 (0.5)
(4.9) 16 (4.9)
Table 14 -
3
120,000
2 ½ 3 4
75 185
10
70 175
5 65 165
160
60
155
N/A 50 140
46 130
43 120
39 115
3
120,000
64 76 102
22.8 56.3
3.0
21.3 53.3
1.5 19.8 50.2
48.7
18.2
47.2
N/A 15.2 42.6
14.0 39.6
13.1 36.5
11.8 35.0
A13110
4
8 (2.4)
5 (1.5)
3 (0.9)
4 (1.2)
2.5 (0.8)
1.5 (0.5)
16 (4.9)