INSTRUCTIONS WHEN OFFSET OF CHIMNEY IS |
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NEEDED |
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A | B | 48 | 36 | 18 | 12 | A | B | 48 | 36 | 18 | 12 | 12S | |||
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To Install Elbows |
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4 3/8 | 16 3/8 |
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| 41 1/4 | 80 1/4 |
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1. To achieve desired offset, you may install combinations of 12", |
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9 3/4 | 25 1/2 |
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| 1 | 45 | 86 3/4 |
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18", 36", and 48" lengths of double wall pipe (see Offsets and |
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12 3/4 30 3/4 |
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| 46 3/4 89 1/2 | 1 |
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Rise chart and Figures 18 and 20). |
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2. Chimney weight above offset rests on return elbow. Straps must | 15 | 34 3/4 |
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| 2 | 51 | 97 | 1 | 1 |
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be securely nailed to rafters or joists (see Figure 19, Details A | 18 | 40 |
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| 1 | 1 | 53 1/4 | 101 |
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and B). |
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21 1/4 | 46 1/4 |
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| 56 1/4 106 1/4 | 2 |
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3. Maximum length of pipe between supports (return elbow or |
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23 3/4 | 49 1/4 |
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| 1 | 2 | 59 1/4 111 1/2 | 1 | 1 | 1 |
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run sections per chimney system (see Figure 20). | 27 3/4 | 56 3/4 | 1 |
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| 61 3/4 115 1/2 | 2 |
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NOTE: ANY OFFSET GREATER THAN 6 FEET MUST USE A |
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30 | 60 3/4 |
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| 64 3/4 120 3/4 | 2 |
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33 | 66 | 1 |
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| 1 | 68 1/4 | 127 | 1 | 2 |
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| 36 | 71 | 1 |
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| 70 | 130 | 2 |
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| 38 1/4 | 75 | 2 | 74 1/4 137 1/2 | 1 | 2 | 1 | 1 |
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| 76 3/4141 1/2 | 1 | 2 | 1 | 1 |
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| 79 3/4146 3/4 |
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| CEILING |
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| SUPPORT |
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| PIPE |
| 2" |
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| SEE |
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| MINIMUM |
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| DETAIL A | ||
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| ANGLE |
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| FIRESTOP |
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| SEE |
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A |
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| DETAIL B |
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| DETAIL B |
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All joints between offset shall be secured with two screws |
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only on the outer pipe and shall not penetrate the inner |
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stainless. See illustration above. |
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Figure 18 |
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| RETURN |
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| ELBOW |
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| DETAIL A |
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| Figure 19 |
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| RETURN |
| RETURN |
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| ELBOW |
| ELBOW |
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| CEILING |
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| RETURN |
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6' MAX |
| 6' MAX |
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| SUPPORT |
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OFFSET |
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| ELBOW |
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| PIPE |
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OFFSET |
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ELBOW | ELBOW |
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| 6' MAX |
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RETURN |
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| RETURN |
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| ELBOW |
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ELBOW | 6' MAX |
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| 6' MAX | OFFSET | 6' MAX |
| OFFSET | OFFSET |
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| ELBOW |
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| ELBOW |
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| ELBOW |
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| A | B |
| C |
Figure 20
55951 | 7 |