14
1
2
3
4
5
6
7
8
2
75
70
65
60
55
50
45
40
3
114
107
100
93
86
79
72
65
2
75
70
65
60
55
50
45
40
3
114
107
100
93
86
79
72
65
2
100
95
90
85
80
75
70
65
3
168
161
154
147
140
133
126
119
2
50
45
40
35
30
25
20
15
3
143
136
129
122
115
108
101
94
2
60
55
50
45
40
35
30
25
3
113
106
99
92
85
78
71
64
2
60
55
50
45
40
35
30
25
3
120
113
106
99
92
85
78
71
2
45
40
35
30
25
20
15
10
3
103
96
89
82
75
68
61
54
2
45
40
35
30
25
20
15
10
3
151
144
137
130
123
116
109
102
*MEC961205DN
3
185
178
171
164
157
150
143
136
2
100
95
90
85
80
75
70
65
3
110
103
96
89
82
75
68
61
2
45
40
35
30
25
20
15
10
3
110
103
96
89
82
75
68
61
2
35
30
25
20
15
10
5
NA
3
103
96
89
82
75
68
61
54
2
45
40
35
30
25
20
15
10
3
110
103
96
89
82
75
68
61
*MEC96/*CEC96 Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe)
Maximum Allowable Length of Vent/Flue Pipe
MODEL
Pipe Size
(in.)
Number of Elbows
*MEC960303AN
&
*MEC960403AN
*MEC960603AN
*MEC960302BN
&
*MEC960402BN
*MEC960603BN^
*MEC960803BN
*MEC960804CN
*MEC961004CN
*MEC961005CN
*CEC960403BN
*CEC960603BN
*CEC960803BN
*CEC961005CN
^ *MEC960603BN-add 45' of 2" pipe for upflow.
Figure 11
WARNING
The rubber elbow is not designed to support a load. When
the rubber elbow is mounted externally to the furnace
cabinet, extreme care must be taken to adequately support
field-supplied vent/flue piping, as damage can result in leaks
causing bodily injury or death due to exposure to flue gases,
including carbon monoxide.
