Offset Elevation Chart
A |
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| Number of FTF8 Chimney Sections | ||||
Offset | Height | Offset/Return |
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(Inches) | (Inches) | Elbow | Stabilizer | 12" | 18" | 36" | 48" | ||
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4 |
| 15 | ³⁄₄ | 1 | 0 | 0 | 0 | 0 | 0 |
9 |
| 24 | ¹⁄₂ | 1 | 0 | 1 | 0 | 0 | 0 |
12 |
| 29 | ³⁄₄ | 1 | 0 | 0 | 1 | 0 | 0 |
14 | ¹⁄₄ | 33 | ¹⁄₂ | 1 | 0 | 2 | 0 | 0 | 0 |
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17 | ¹⁄₄ | 38 | ¹⁄₂ | 1 | 0 | 1 | 1 | 0 | 0 |
20 | ¹⁄₄ | 43 | ³⁄₄ | 1 | 0 | 0 | 2 | 0 | 0 |
21 |
| 45 | ¹⁄₄ | 1 | 0 | 0 | 0 | 1 | 0 |
22 | ¹⁄₄ | 47 | ¹⁄₂ | 1 | 0 | 2 | 1 | 0 | 0 |
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25 | ¹⁄₄ | 52 | ¹⁄₂ | 1 | 0 | 1 | 2 | 0 | 0 |
26 | ¹⁄₄ | 54 | ¹⁄₄ | 1 | 0 | 1 | 0 | 1 | 0 |
27 |
| 55 | ³⁄₄ | 1 | 0 | 0 | 0 | 0 | 1 |
28 | ¹⁄₄ | 57 | ³⁄₄ | 1 | 0 | 0 | 3 | 0 | 0 |
29 | ¹⁄₄ | 59 | ¹⁄₄ | 1 | 0 | 0 | 1 | 1 | 0 |
31 | ¹⁄₄ | 63 |
| 1 | 0 | 2 | 0 | 1 | 0 |
32 | ¹⁄₄ | 64 | ¹⁄₂ | 1 | 0 | 1 | 0 | 0 | 1 |
34 | ¹⁄₄ | 68 | ¹⁄₄ | 1 | 0 | 1 | 1 | 1 | 0 |
35 | ¹⁄₄ | 69 | ³⁄₄ | 1 | 0 | 0 | 1 | 0 | 1 |
37 | ¹⁄₄ | 73 | ¹⁄₄ | 1 | 0 | 0 | 2 | 1 | 0 |
38 | ¹⁄₄ | 75 |
| 1 | 0 | 0 | 0 | 2 | 0 |
39 | ¹⁄₄ | 77 |
| 1 | 0 | 2 | 1 | 1 | 0 |
41 | ¹⁄₂ | 80 | ¹⁄₂ | 1 | 0 | 1 | 4 | 0 | 0 |
43 | ¹⁄₄ | 83 | ³⁄₄ | 1 | 0 | 1 | 0 | 2 | 0 |
44 | ¹⁄₄ | 85 | ¹⁄₄ | 1 | 0 | 0 | 0 | 1 | 1 |
45 | ¹⁄₄ | 87 | ¹⁄₂ | 1 | 0 | 0 | 3 | 1 | 0 |
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46 | ¹⁄₄ | 89 |
| 1 | 0 | 0 | 1 | 2 | 0 |
48 | ¹⁄₄ | 91 | ¹⁄₂ | 1 | 0 | 2 | 0 | 2 | 0 |
49 | ¹⁄₄ | 94 | ¹⁄₄ | 1 | 0 | 1 | 0 | 1 | 1 |
50 | ¹⁄₄ | 95 | ³⁄₄ | 1 | 0 | 0 | 0 | 0 | 2 |
51 | ¹⁄₄ | 97 | ³⁄₄ | 1 | 0 | 1 | 1 | 2 | 0 |
54 | ¹⁄₄ | 103 |
| 1 | 0 | 0 | 2 | 2 | 0 |
55 | ¹⁄₄ | 104 | ¹⁄₂ | 1 | 0 | 1 | 0 | 0 | 2 |
56 | ¹⁄₂ | 106 | ¹⁄₂ | 1 | 0 | 2 | 1 | 2 | 0 |
58 | ¹⁄₄ | 109 | ³⁄₄ | 1 | 0 | 0 | 1 | 0 | 2 |
61 | ³⁄₄ | 116 |
| 1 | 1 | 1 | 0 | 3 | 0 |
64 | ³⁄₄ | 121 | ¹⁄₄ | 1 | 1 | 0 | 1 | 3 | 0 |
67 |
| 124 | ³⁄₄ | 1 | 1 | 2 | 0 | 3 | 0 |
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68 | ³⁄₄ | 128 |
| 1 | 1 | 0 | 0 | 1 | 2 |
70 |
| 130 |
| 1 | 1 | 1 | 1 | 3 | 0 |
73 |
| 135 | ¹⁄₄ | 1 | 1 | 0 | 2 | 3 | 0 |
74 | ³⁄₄ | 138 | ¹⁄₄ | 1 | 1 | 0 | 0 | 0 | 3 |
79 |
| 145 | ¹⁄₂ | 1 | 1 | 1 | 0 | 4 | 0 |
80 |
| 147 | ¹⁄₄ | 1 | 1 | 1 | 0 | 0 | 3 |
82 |
| 150 | ³⁄₄ | 1 | 1 | 0 | 1 | 4 | 0 |
82 | ¹⁄₄ | 152 |
| 1 | 1 | 0 | 1 | 0 | 3 |
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Table 4
18 | NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. |
Return
Elbow
Figure 50
Note: The return elbow assembly performs the same function as a stabilizer. Consider this when determining the need for a stabilizer.
Note: Do not apply excessive pressure to any subsequent chimney section following return elbow assembly when installing. Ensure that each subsequent chimney section is securely attached by testing as noted above.
Gas Line Connection
Install a 1/2" gas supply line through fireplace wall for connection to a decorative gas appliance inside the firebox. Outside, the gas supply line connects to a gas
Always plumb gas line installation per local codes. Check all connections with a gas leak detection solution for leaks (which will bubble if present). Never test any gas line connection with a match or open flame.
This provision is intended for connection to a decorative gas appliance incorporating an automatic