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(See Note 2)
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= VENT TERMINAL | X = AIR SUPPLY INLET | = AREA WHERE TERMINAL IS NOT PERMITTED |
A | = | 12 inches | clearances above grade, veran- | K |
| = | 3 ft. (U.S.A.) |
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B | = | 12 inches | clearances to window or door |
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L** | = | 7 ft | clearance | above paved |
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D* | = | 18 inches | vertical clearance to unventilat- | M*** = | 18 inches | clearance | under veranda, |
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| hang |
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F | = | 9 inches | clearance to outside corner |
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G | = | 6 inches | clearance to inside corner | T | = |
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H | = | 3 ft. (Canada) | not to be installed above a gas |
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I | = | 3 ft | clearance to gas service regula- |
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| QMIN |
| RMAX |
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J | = | 9 inches (U.S.A.) |
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| QMIN = # termination caps x 3 RMAX = (2 / # termination caps) x QACTUAL |
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**a vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings.
***only permitted if veranda, porch, deck or balcony is fully open on a minimum of 2 sides beneath the floor, or meets Note 2.
NOTE: Local codes or regulations may require different clearances.
NOTE: Termination caps may be hot. Consider their proximity to doors or other traffic areas.
NOTE 1: On private property where termination is less than 7 feet above a sidewalk, driveway, deck, porch, veranda or balcony, use of a listed cap is suggested. (See vents components pages.)
NOTE 2: Termination in an alcove space (spaces only open on one side and without an overhang) are permitted with the dimensions specified for vinyl or
NOTE 3: Location of the vent termination must not interfere with access to the electrical service.
Figure 4.4
WARNING: In the U.S.: Vent system termination is NOT permitted in screened porches. You must follow side wall, overhang and ground clearances as slated in the instructions.
In Canada: Vent system termination is NOT permitted in screened porches. Vent system termination is permitted in porch areas with two or more sides open. You must follow side wall, overhang and ground clearances as stated in the instructions.
CAUTION: IF EXTERIOR WALLS ARE FINISHED WITH VINYL SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE INSTALLED (part #VPK- DV).
September 1, 2008 | Page 9 |