915SB: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
37
trap drain and the evaporator coil drain empty into an open segment of
pipe above the drain. See Fig.13. When using the External Vent Trap Kit,
refer to those instructions for proper drain connections.
The tee may also be connected to the intake air pipe on the side of the
casing. See
.
In any configuration, it will be necessary to add the equivalent length of
the tee (15 feet/5 M) to the Total Equivalent Vent Length of the venting
system.
Table 12 – Maximum Equivalent Vent Length - Ft.
NOTE:
Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows.
- Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application.
NOTES
:
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 the loose parts bag) & 60K Inducer Outlet Restrictor disk (P/N 337683-401; .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
337683-4021188589
; 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
NOTICE
!
ADDITIONAL
INFORMATION
FOR
POLYPROPYLENE
VENTING SYSTEMS
Polypropylene venting systems include flexible vent pipe. These
flexible vent pipes have a different equivalent vent length than straight
sections of PVC/ABS DWV vent pipe. Be sure to make the appropriate
deductions from the Maximum Equivalent Vent Length (MEVL), or
additions to the Total Equivalent Vent Length (TEVL), when applying
flexible vent pipes in polypropylene venting systems. See the
polypropylene vent system manufacturer’s installation instructions for
details.
When using metric-sized venting systems, use these equivalencies for
obtaining the proper MEVL from the Tables:
Use 2” Vent Tables for 60 mm (o.d.) vent systems
Use 3” Vent Tables for 80 mm (o.d.) vent systems
Use 4” Vent Tables for 100 mm (o.d.) vent systems
Unit Size
26,000
2
40,000
1
60,000
2
80,000
100,000
120,000
3
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
120,000
3
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
Long
Medium
Mitered
Concentric
Standard 2-in., 3-in., or
optional 4-in. termination.
ELBOW CONFIGURATIONS
VENT TERMINAL CONFIGURATIONS