Installation
900004-00, 03/2018
Innovative Hearth Products
DRT2000 and DRC2000 Direct-Vent Fireplaces
23
Vent section length table
Table 15 will assist calculating how many vent sections are needed for the planned vent configuration. When a vent
section is engaged with another section, its effective length will be 1-1/2” shorter.
Table 15 - Vent Section Length
Nominal Section
Length (in.)
6
12
24
36
48
Total Qty
Net Section Length
(in.)
4.5
10.5
22.5
34.5
46.5
Height of Vent
Number of Vent Sections
in.
ft
4.5
0.375
1
0
0
0
0
1
9
0.75
2
0
0
0
0
2
10.5
0.875
0
1
0
0
0
1
15
1.25
1
1
0
0
0
2
22.5
1.875
0
0
1
0
0
1
31.5
2.625
0
3
0
0
0
3
34.5
2.875
0
0
0
1
0
1
37.5
3.125
1
1
1
0
0
3
43.5
3.625
0
2
1
0
0
3
45
3.75
0
0
2
0
0
2
46.5
3.875
0
0
0
0
1
1
51
4.25
1
0
0
0
1
2
55.5
4.625
0
1
2
0
0
3
57
4.75
0
0
1
1
0
2
67.5
5.625
0
0
3
0
0
3
69
5.75
0
0
0
2
0
2
73.5
6.125
1
0
0
2
0
3
79.5
6.625
0
1
0
2
0
3
81
6.75
0
0
0
1
1
2
91.5
7.625
0
0
2
0
1
3
93
7.75
0
0
0
0
2
2
97.5
8.125
1
0
0
0
2
3
103.5
8.625
0
0
0
3
0
3
108
9
1
0
0
3
0
4
117
9.75
1
0
5
0
0
6
118.5
9.875
1
1
0
3
0
5
126
10.5
0
0
1
3
0
4
130.5
10.875
1
0
1
3
0
5
135
11.25
0
0
6
0
0
6
139.5
11.625
0
0
0
0
3
3
142.5
11.875
1
0
0
4
0
5
144
12
1
0
0
0
3
4
154.5
12.875
1
1
0
0
3
5
160.5
13.375
0
2
0
0
3
5
172.5
14.375
0
0
0
5
0
5
177
14.75
1
0
0
5
0
6
186
15.5
0
0
0
0
4
4
196.5
16.375
0
1
0
0
4
5
207
17.25
0
0
0
6
0
6
211.5
17.625
1
0
0
6
0
7
217.5
18.125
0
1
0
6
0
7
229.5
19.125
0
0
1
6
0
7
232.5
19.375
0
0
0
0
5
5
241.5
20.125
0
0
0
7
0
7
246
20.5
1
0
0
7
0
8
Nominal Section Length
(in.)
6
12
24
36
48
Total Qty
Net Section Length (in.)
4.5
10.5
22.5
34.5
46.5
Height of Vent
Number of Vent Sections
in.
ft
252
21
0
1
0
7
0
8
276
23
0
0
0
8
0
8
279
23.25
0
0
0
0
6
6
280.5
23.375
1
0
0
8
0
9
289.5
24.125
0
1
0
0
6
7
301.5
25.125
0
0
1
0
6
7
310.5
25.875
0
0
0
9
0
9
325.5
27.125
0
0
0
0
7
7
330
27.5
1
0
0
0
7
8
345
28.75
0
0
0
10
0
10
349.5
29.125
1
0
0
10
0
11
372
31
0
0
0
0
8
8
379.5
31.625
0
0
0
11
0
11
418.5
34.875
0
0
0
0
9
9
465
38.75
0
0
0
0
10
10
475.5
39.625
0
1
0
0
10
11
480
40
1
1
0
0
10
12
492
41
1
0
1
0
10
12
499.5
41.625
0
0
0
1
10
11
504
42
1
0
0
1
10
12
511.5
42.625
0
0
0
0
11
11
520.5
43.375
0
2
0
1
11
14
531
44.25
0
2
2
0
11
15
538.5
44.875
1
0
0
2
11
14
549
45.75
1
0
2
1
11
15
558
46.5
0
0
0
0
12
12
562.5
46.875
1
0
0
0
12
13
568.5
47.375
0
1
0
0
12
13
573
47.75
1
1
0
0
12
14
580.5
48.375
0
0
1
0
12
13
589.5
49.125
0
1
2
2
10
15
595.5
49.625
1
1
1
0
12
15
604.5
50.375
0
0
0
0
13
13
615
51.25
0
1
0
0
13
14
625.5
52.125
0
2
0
0
13
15
631.5
52.625
1
0
1
0
13
15
637.5
53.125
0
1
1
0
13
15
651
54.25
0
0
0
0
14
14
655.5
54.625
1
0
0
0
14
15
672
56
0
2
0
0
14
16
678
56.5
1
0
1
0
14
16
688.5
57.375
1
1
1
0
14
17
697.5
58.125
0
0
0
0
15
15
702
58.5
1
0
0
0
15
16
712.5
59.375
1
1
0
0
15
17
720
60
0
0
1
0
15
16
