Encore Woodburning Stove
Hearths
This appliance must be installed on to hearth that meets the requirements of Part J of the Building Regu- lations 2000 (Combustion Appliances and Fuel Storage Systems). This can be achieved by ensuring that the hearth is constructed and sized in accordance with the guidelines included in section 2 of approved document ‘J’. The size and clearances of the hearth are as fol- lows:
The constructed hearth should be constructed in ac- |
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cordance with the recommendations in document J, |
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and should be of minimum width 840 mm and minimum |
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depth 840 mm (if a free standing hearth b) above) or | Wood framing requires pro- |
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a minimum projection of 150 mm from the jamb (if a | tection from radiant heat |
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recessed hearth a) above). |
| Fig. 11 Combustible supporting timbers may lie beneath | ||
Unless the stove |
| fireplace hearths, requiring additional floor protection. |
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hearth is completely | Costructional Hearth |
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noncombustible, the |
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Dimensions as below | At least 150 mm | |||
bottom heat shield |
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should be installed to |
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provide radiant protec- |
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tion for framing which | Appliance | Appliance |
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may be below the |
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Doors |
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hearth. (Fig. 11) |
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| Hearth Surface |
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At least | Free of Com- |
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bustible Material |
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150 mm |
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Perimeter should be |
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| clearly marked e.g. |
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clearly marked e.g. | At least | edge of superimposed |
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edge of superimposed | hearth |
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hearth | 300 mm |
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| a) Fireplace recess | b) Free standing | ST912 | |
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Fig. 10 | Noncombustible hearth surface dimensions. |
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Floor Protection for Fireplace Installations
Do not assume that your fireplace hearth is completely noncombustible.
Many fireplace hearths do not meet the “completely noncombustible” requirement because the brick or concrete in front of the fireplace opening is supported by heavy wood framing. (Fig. 11) Because heat passes through brick or concrete readily, it can easily pass through to the wood. As a result, such fireplace hearths can be a fire hazard and are considered a combustible floor.
Keep in mind, also, that many raised hearths will extend less than the required clearance from the front of the heater when it is installed. In such cases, sufficient floor protection as described above must be added in front of the hearth to satisfy the minimum floor protector requirement from the front of the stove: 406 mm (16”) from the front.
Hearth rugs do not satisfy the requirements for floor protection.
Keep the Stove a Safe Distance
from Surrounding Materials
Both a stove and its chimney connector radiate heat in all directions when operating, and dangerous overheat- ing of nearby combustible materials can occur if they are too close to the heat. A safe installation requires that adequate clearance be maintained between the hot stove and its connector and nearby combustibles.
Clearance is the distance between either your stove (measured from the bottom edge of the stove’s top plate) or chimney connector, and nearby walls, floors, the ceiling, and any other fixed combustible surface. Your stove has special clearance requirements that have been established after careful research and test- ing to both US and European standards. These clear-
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