BW36 SERIES WOODBURNING FIREPLACE
No one builds a better fire
c. | The “B” dimensions that coincide with the “A” dim- | e. Whenever the chimney penetrates a floor/ceiling, |
| ensions represent the required vertical clearance | a firestop spacer must be installed. |
| that is needed to complete the offset and return. | f. The effective height of the firebox assembly |
d. |
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Read across the chart and find the number of | is 335⁄8". | |
| chimney sections required and the model num- | Example: Your “A” dimension from Figure 8 is 141⁄2". |
| ber of those particular chimney parts. | |
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| Using Table 1, the dimension closest to but not less |
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| than 141⁄2" is 145⁄8" using a 30° offset/return. It is then |
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| determined from the table that you would need 33" | |
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| (Dimension “B”) between the offset and return. The |
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| chimney components that best fit your application are |
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| two [2] SL312’s. |
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| WARNING! |
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| DO NOT COMBINE OFFSETS TO |
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| CREATE AN OFFSET GREATER |
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| 11/4" OVERLAP |
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| THAN 30° FROM VERTICAL. THIS |
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| MAY CREATE A FIRE HAZARD |
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| Figure 8 |
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| SINCE THE NATURAL DRAFT MAY |
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| Chimney Offset/Return |
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| BE RESTRICTED. |
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Offset Chart* |
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| TABLE 1 |
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| 15° |
| 30° |
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| A |
| B |
| A |
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| B | SL306 |
| SL312 |
| SL318 |
| SL324 | SL336 | SL348 |
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| 15/8” |
| 133/8” |
| 37/8” |
| 141/2” | – |
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| 27/8” |
| 173/4” |
| 61/4” |
| 185/8” | 1” |
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| 85/8” |
| 223/4” | 2” |
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| – |
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| 41/2” |
| 235/8” |
| 91/4” |
| 233/4” | – |
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| 1” |
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| – |
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| 115/8” |
| 277/8” | 1” |
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| 1” |
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| 6” |
| 293/8” |
| 121/4” |
| 29” | – |
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| 1” |
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| 71/4” |
| 34” |
| 145/8” |
| 33” | – |
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| 2” |
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| – |
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| 151/4” |
| 341/8” | – |
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| 1” | – | – |
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| 175/8” |
| 381/4” | 1” |
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| 1” | – | – |
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| 205/8” |
| 431/2” | – |
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| 2” |
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| 105/8” |
| 463/4” |
| 211/4” |
| 445/8” | – |
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| – | 1” | – |
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| 117/8” |
| 513/8” |
| 235/8” |
| 483/4” | 1” |
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| – | 1” | – |
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| 265/8” |
| 537/8” | – |
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| 2” | – | – |
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| 133/4” |
| 583/8” |
| 271/4” |
| 553/4” | – |
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| – | – | 1” |
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| 15” |
| 63” |
| 295/8” |
| 59” | 1” |
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| – |
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| – | – | 1” |
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| 161/2” |
| 683/4” |
| 325/8” |
| 641/4” | – |
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| 1” |
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| – | – | 1” |
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| 18” |
| 745/8” |
| 355/8” |
| 691/2” | – |
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| 1” |
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| 385/8” |
| 745/8” | – |
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| 1” | – | 1” |
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| 41” |
| 783/4” | 1” |
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| 1” | – | 1” |
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| 223/4” |
| 917/8” |
| 445/8” |
| 85” | – |
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| – | 1” | 1” |
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| 24” |
| 961/2” |
| 47” |
| 891/8” | 1” |
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| – | 1” | 1” |
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| 257/8” |
| 1031/2” |
| 505/8” |
| 951/2” | – |
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| – | – | 2” |
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*Proper assembly of air cooled chimney parts result in an overlap at chimney joints of 11/4”. Effective length is built into this chart.
12 |
