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L | B |
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| v | B | (3 FT) |
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| v | I | M | v |
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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 air | ||||||||
B | = | 12" | clearances to window or door |
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| supply inlet |
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| that may be opened, or to per- | L** | = | 7 ft. ......................... clearance above paved side- | ||||||||||
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| (See Note 1) | walk or a paved driveway locat- | ||||||
D* | = | 18" | vertical clearance to unventilat- |
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| ed on public property | |||||
M*** = | 18" |
| clearance under veranda, porch, | |||||||||||||
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| ed soffit or to ventilated soffit lo- |
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| deck, balcony or overhang | ||||||
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| cated above the terminal |
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| 42” | vinyl |
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| *30” | for vinyl clad soffits and below |
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| electrical service |
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| Alcove Applications |
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F | = | 9" | clearance to outside corner |
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G | = | 6" | clearance to inside corner |
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| 12 inches | vinyl sidewalls |
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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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| meter/regulator assembly within |
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| 3 feet (90cm) horizontally from the |
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| 1 cap |
| 3 feet |
| 2 x Q ACTUAL |
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| 2 caps |
| 6 feet |
| 1 x Q ACTUAL |
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I | = | 3 ft. (U.S.A.) |
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| 3 caps |
| 9 feet |
| 2/3 x Q ACTUAL |
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| 6 ft. (Canada) | clearance to gas service regu- |
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| 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.) |
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| QMIN = # termination caps x 3 RMAX = (2 / # termination caps) x QACTUAL |
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| 12" (Canada) | clearance to |
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| supply inlet to building or the |
| S | = | 6" ..........................(See Note 5) clearance from sides of elec- | |||||||||
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| combustion air inlet to any other |
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| trical service |
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| appliance |
| T | = | 12" .........................(See Note 5) clearance above electrical | |||||||||
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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 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 30. 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.
Heat & Glo assumes no responsibility for the improper perfor- mance of the appliance when the venting system does not meet these requirements.
CAUTION: IF EXTERIOR WALLS ARE FINISHED WITH VINYL SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE INSTALLED.
36 | Heat & Glo • |