Venting Installation
Continued
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| See Detail A | ||
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| Ceiling Support |
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| Pipe |
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| 2" Min. |
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| See Detail B | |||
Straps |
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| Straps | Straps |
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| Detail A |
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| Detail B |
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| Return Elbow |
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| Angle |
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| Firestop |
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| Figure 10 - Ceiling Support Pipe |
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| OFFSET | RISE |
| CHIMNEY LENGTH |
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| A | B | 48" | 36" | 24" | 18" | 12" |
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| 4 3/8" | 16 3/8" |
| ELBOW SET ONLY |
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| 9 3/4" | 25 1/2" |
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| 1 |
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| 12 3/4" | 30 3/4" |
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| 1 |
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| 15" | 34 3/4" |
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| 18" | 40" |
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| 1 | 1 |
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| 21 1/4" | 46 1/4" |
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| 23 3/4" | 49 1/4" |
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| 1 | 1 |
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| 27 3/4" | 56 3/4" |
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| 30" | 60 3/4" |
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| Screws |
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| 33" | 66" |
| 1 |
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| B | |||||||
| 36" | 71" |
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| 38 1/4" | 75" |
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| 41 1/4" | 80 1/4" |
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| 45" | 86 3/4" |
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| 46 3/4" | 89 1/2" |
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| 51" | 97" |
| 1 | 1 |
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| 53 1/4" | 101" |
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| 56 1/4" | 106 1/4" |
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| 59 1/4" | 111 1/2" |
| 1 | 1 |
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| 61 3/4" | 115 1/2" |
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| 64 3/4" | 120 3/4" |
| 2 |
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| 68 1/4" | 127" |
| 1 | 2 |
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| 70" | 130" |
| 2 |
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| 1 | 1 |
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| 74 1/4" | 137 1/2" |
| 1 | 2 |
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| 76 3/4" | 141 1/2" |
| 1 | 2 |
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| 79 3/4" | 146 3/4" |
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OFFSET CHART
Figure 11 - Elbow Offset
www.fmiproducts.com | 9 |