15
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
*M EC961205DN
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)
(6)
Maximum Allowable Length of Vent/Flue Pipe
MODEL
Pipe Size
(4)
(in.)
Number of Elbows
(3) (5)
*M EC960303AN
&
*M EC960403AN
*M EC960603AN
*M EC960302BN
&
*M EC960402BN
*M EC960603BN^
*M EC960803BN
*M EC960804CN
*M EC961004CN
*M EC961005CN
*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.