R
M
N
P
Q
(See Note 2)
V
T
VS Electrical S
Service
D*
V
V
V
= VENT TERMINAL | X = AIR SUPPLY INLET |
= AREA WHERE TERMINAL IS NOT PERMITTED
A | = | 12 inches | clearances above grade, veranda, | L** | = | .7 ft | clearance above paved | ||||||||||
|
| (See Note 1) | porch, deck or balcony |
|
|
|
| (See Note 1) |
| sidewalk or a paved driveway | |||||||
B | = | 12 inches | clearances to window or door |
|
|
|
|
|
|
|
| located on public property | |||||
M*** = | 18 inches | clearance under veranda, porch, | |||||||||||||||
|
|
| that may be opened, or to perma- | ||||||||||||||
|
|
| nently closed window. (Glass) |
|
|
|
|
|
|
|
| deck, balcony or overhang | |||||
D* | = | 18 inches | vertical clearance to unventilated |
|
|
|
| 42 inches | vinyl |
|
|
| |||||
|
|
| soffit or to ventilated soffit located | S | = |
| 6 inches | clearance from sides of electri- | |||||||||
|
|
| above the terminal |
|
|
|
|
| (See Note 5) |
| cal service |
|
|
| |||
|
| *30 inches | for vinyl clad soffits and below | T | = | 12 inches | clearance above electrical | ||||||||||
|
|
| electrical service |
|
|
|
| (See Note 5) |
| service |
|
|
| ||||
F | = | 9 inches | clearance to outside corner |
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
| Alcove Applications |
|
|
|
|
| ||||||||||
G | = | 6 inches | clearance to inside corner |
|
|
|
|
|
|
| |||||||
|
| N |
| = | 6 inches |
| |||||||||||
H | = | 3 ft. (Canada) | not to be installed above a gas |
|
|
|
| ||||||||||
|
|
|
|
| 12 inches | vinyl sidewalls |
| ||||||||||
|
|
| meter/regulator assembly within 3 |
|
|
|
|
|
| ||||||||
|
|
|
|
| P |
| = | 8 ft. |
|
|
|
|
|
| |||
|
|
| feet (90 cm) horizontally from the |
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
| QMIN |
| RMAX |
|
| |||
I | = | 3 ft | clearance to gas service regulator |
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
| 1 cap |
| 3 feet |
| 2 x Q ACTUAL |
|
| |||||||
|
|
| vent outlet |
|
|
|
|
|
|
|
| ||||||
J | = | 9 inches (U.S.A.) |
|
|
|
|
| 2 caps |
| 6 feet |
| 1 x Q ACTUAL |
|
| |||
|
| 12 inches (Canada) clearance to |
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
| 3 caps |
| 9 feet |
| 2/3 x Q ACTUAL |
|
| |||||
|
|
| air supply inlet to building or the |
|
|
|
|
|
|
|
| ||||||
|
|
| combustion air inlet to any other |
|
|
|
| 4 caps |
| 12 feet |
| 1/2 x Q ACTUAL |
|
| |||
|
|
| appliance |
|
|
|
|
|
|
|
|
|
|
|
|
| |
K | = | 3 ft. (U.S.A.) |
|
|
| QMIN | = # termination caps x 3 | RMAX = (2 / # termination caps) x QACTUAL |
|
| |||||||
|
|
|
|
|
| ||||||||||||
|
| 6 ft. (Canada) | clearance to a mechanical (pow- |
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
| ered) air supply inlet |
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
**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. (See vents components page)
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 4.4 Minimum Clearances for Termination
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 performance 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.
Heat & Glo • | 11 |