CONNECTING THE VENT - Continued
1/4”
SAFE | UNSAFE | RECOMMENDED |
FIGURE 7A | FIGURE 7B | FIGURE 7C |
If the floor furnace is vented into a masonry chimney, the chimney must be inspected to determine that it is clear and free of obstructions and that it is safe for the intended use. The inside of the chimney must be at least 6 inches in diameter or 6 inches by 6 inches if rectangular. Insert the vent pipe into the chimney through a masonry or noncombustible
Even following these instructions you may still have a venting problem because of the larger area to be heated inside the chimney. This could cause pilot outage, odors coming from the furnace, or noise due to excessive heat not being vented out of the combustion chamber. If you experience any of these problems, we recommend running the proper size “B” type vent pipe down the chimney and connecting to the horizontal run of vent pipe with a
Extend the vent system at least 3 feet above the point where it exits the roof and at least two feet higher than any part of the roof system within 10 feet. Terminate with a listed or approved cap. See Figure 9.
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| 10’ OR |
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| LESS |
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10 FEET |
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10’ |
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RIDGE |
| RIDGE | 2’ Minimum | CHIMNEY OR |
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| METAL PIPE |
2’ Minimum | CHIMNEY OR |
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| 3’ MINIMUM |
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| METAL PIPE |
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| 3’ MINIMUM |
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FIGURE 9 | FIGURE 9 |
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