Connection Above the Fireplace
In this installation, the chimney connector enters the fireplace flue through a thimble located above the fireplace. (Fig. 6) The liner of the fireplace chimney should extend at least to the point at which the chim- ney connector enters the chimney. Follow all the guidelines for installing a chimney connector into a freestanding masonry chimney, and pay special attention to these additional points:
•The stove and chimney connector clearances to combustible mantel and trim materials are the same as clearances to combustible walls. If necessary, use a combination of mantel, trim, and connector heat shields to provide the required clearances. Refer to page 12.
•
•The fireplace damper must be closed and sealed to prevent room air from being drawn up the flue which could reduce performance. However, it must be possible to reopen the damper to inspect or clean the chimney.
•Floor protection requirements also apply to fireplace installations.
Wall Pass-throughs
Vermont Castings Madison
Chimney Connector
Heat Shield | * |
| |
Note clearance |
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*requirement on | * |
pages | |
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| Mantel |
ST244a
Fig. 6 If the clearance between the chimney connector and either the ceiling or the mantel is inadequate, a protective heat shield is required.
Whenever possible, design the installation so that the connector does not pass through a combustible wall. If you must include a wall
Consult with your dealer regarding special connec- tion components available for use as wall pass- throughs. Use only parts that have been tested and listed for use as a wall
U.S. Requirements:
The National Fire Protection Association (NFPA) has
Fire clay liner
A |
A |
Min. 2" (51mm) Chimney clearance to brick and combustibles
Masonry |
| Min. 12" |
Chimney | Flue | (305 mm) |
constructed |
| |
|
| |
to NFPA | Chimney | Chimney |
211 |
| |
| connector | |
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| Fire clay |
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| liner |
A = Minimum 12" (305 mm) brick construction between liner and combustible framing materials
ST272
established guidelines for use in the United States for passing chimney connectors through combustible walls. Many building code inspectors follow these guidelines.
Fig. 7 Masonry Wall
Figure 7 shows one
Alternate methods approved by the NFPA:
• Using a section of |
(230 mm) clearance to combustibles. (Fig. 8) |
Solid insulated, listed factory- built chimney
length set flush
Min. 9"with flue 230mm
Masonry
Chimney constructed to NFPA 211
| Min. 2" | |
| (51mm) | |
| Min. 9" | |
Flue | (230mm) | |
Chimney | ||
Chimney | Connector | |
Air Space | ||
|
• Placing a chimney connector pipe inside a steel |
rated from combustibles by 6" (150 mm) of fiber- |
glass insulating material. (Fig. 9) |
|
| 24 ga.Sheet | |
| Sheet Steel | Steel | |
| refractory cement | Supports | |
| Supports | ||
ST273 |
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Fig. 8 Wall
7