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(See Note 2)
V
T
VS Electrical Service
D*
V
S V
V
= VENT TERMINAL | X = AIR SUPPLY INLET |
= AREA WHERE TERMINAL IS NOT PERMITTED
A | = | 12" | clearances above grade, veran- | K |
| = | 3 ft. (U.S.A.) |
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| (See Note 1) | da, porch, deck or balcony |
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| 6 ft. (Canada) | clearance to a mechanical | |||||
B | = | 12" | clearances to window or door |
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| air supply inlet | ||
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| that may be opened, or to per- | L** | = | 7 ft |
| clearance above paved | |||||
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| manently closed window. |
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| (See Note 1) |
| sidewalk or a paved driveway | ||||
D* | = | 18" | vertical clearance to unventilat- |
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M*** = | 18" |
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| clearance under veranda, | ||||||||
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| porch, deck or balcony | ||
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| N |
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| *30” min | for vinyl clad soffits and below |
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| 12” |
| vinyl sidewalls | ||||||
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| electrical service |
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F | = | 9" | clearance to outside corner |
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| vinyl soffit and overhang | ||||||||
G | = | 6" | clearance to inside corner |
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H | = | 3 ft. (Canada) | not to be installed above a gas |
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| QMIN |
| RMAX |
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| 1 cap |
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| 2 x Q ACTUAL |
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I | = | 3 ft. (U.S.A.) |
| 2 caps |
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| 1 x Q ACTUAL |
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clearance to gas service regu- |
| 3 caps |
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| 9 feet |
| 2/3 x Q ACTUAL |
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| 6 ft. (Canada) |
| 4 caps |
| 12 feet |
| 1/2 x Q ACTUAL |
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| lator vent outlet |
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J | = | 9" (U.S.A.) |
| QMIN = # termination caps x 3 | RMAX = (2 / # termination caps) x QACTUAL |
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| 12" (Canada) | clearance to | S | = |
| 6" MIN | clearance from sides of elec- | |||||
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| supply inlet to building or the |
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| (See Note 5) |
| trical service | ||||
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| combustion air inlet to any other | T | = | 12" MIN | clearance above electrical | ||||||
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| service | |||||
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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.
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 shield is suggested.
NOTE 2: Termination in an alcove space (spaces open only on one side and with an overhang) are permitted with the dimensions specified for vinyl or
Figure 29. Vent Termination Minimum Clearances
NOTE 3: Local codes or regulations may require different clearances.
NOTE 4: Termination caps may be hot. Consider their proximity to doors or other traffic areas.
NOTE 5: Location of the vent termination must not interfere with access to the electrical service.
WARNING: In the U.S: Vent system termination is NOT permitted in screened porches. You must follow side wall, overhang and
ground clearances as stated 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 all side walls, 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.
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