R
Cumberland Gap Wood Stove
Thimble
Site constructed for masonry chimney installation:
Components
•A minimum length of 12 inches [305mm] (longer for thicker walls) of solid insulated
(25mm) from the exterior wall.
•Wall spacer, trim collar and wall band to fit solid pack chimney selected.
•Minimum 8 inch (203mm) diameter clay liner section (if not already present in chimney) and refractory mortar.
Air Clearances
•Masonry chimney clearance must meet NFPA 211 mini- mum requirement of 2 inches (51mm) to sheet metal sup- ports and combustibles.
•Minimum of 1 inch (25mm) clearance around the chimney connector.
•Top of wall opening is a minimum of
Instructions:
1.Open inside wall at proper height for the chimney con- nector to entry the masonry chimney. Figure 19.1
2.Entry hole to masonry chimney must be lined with an 8 inch (203mm) minimum diameter clay liner, or equiva- lent, secured with refractory mortar.
3.Construct a 17 inch x 17 inch (432mm x 432mm) outside dimension frame from 2 x 2 framing lumber to fit into wall opening. Inside opening of frame should be no less than 14 inch x 14 inch (356mm x 356mm). Figure 19.1.
4.Attach the wall spacer to the chimney side of the frame.
5.Nail the frame into the wall opening. The spacer should be on the chimney side.
6.Insert the section of the solid insulated chimney into the outer wall of the masonry chimney.
7.Tightly secure the length of the solid insulated chimney with the wall band to the masonry chimney.
8.Insert a section of chimney connector into the chimney. Make sure it does not protrude past the edge of the clay chimney liner inside the chimney.
9.Seal the end of the chimney connector to the clay liner with refractory mortar.
10.Install trim collar around the sold pack chimney section.
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| ceiling |
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| 13.5” below ceiling to top | ||||||
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| Wall | of opening | ||||||
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| or top of opening is a min.of | |||||||
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| Minimum18.0” | 4.5” below min.clearance | ||||||||||||||
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| NFPA | 211 |
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| specified by connector mfg. | |||||||||||
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| 1.5 | 2x2 framing stud | |||||||||||||
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| 2.0 | min air clearance | |||||
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| 1.0 | min air clearance | |||||
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| 4.5 |
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| 1.5” |
| 2.0” | ||||
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| 1.0” |
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17.0” OD 14.0” ID | 8.0” |
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| 1.0” |
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| 1.5” |
| 2.0” | ||||
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Center of Hole |
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| Thimble |
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Include depth of hearth pad
Figure 19.1
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| Fire Clay Flue |
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| Liner |
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| with Airspace |
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| Masonry |
Trim Collar |
| Chimney |
Chimney Section |
| Wall Spacer |
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with 2 inch |
| Wall Band to |
(51mm) |
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| Secure Chimney | |
Clearance to |
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| Section | |
Combustibles |
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| Chimney | Wood Studs Used |
| Connector | |
| for Framing - Spaced | |
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| 2 inch (51mm) |
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| clearance from |
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| Masonry Chimney |
Figure 19.2 - Solid Pack Chimney with Metal Sup- ports as a Thimble
WARNING
Fire Risk.
Do NOT pack insulation or other combustibles between spacers.
•ALWAYS maintain specified clearances around venting and spacers.
•Install spacers as specified.
Failure to keep insulation or other material away from vent pipe may cause fire.
November 5, 2010 | Page 19 |
