Hearth and Home Technologies CERONA-42 Alcove Applications, Minimum Clearances for Termination

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		non-vinyl sidewalls
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
			center-line of the regulator
									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 non-mechanical
							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 non-vinyl siding and soffits. 1. There must be 3 feet minimum between termination caps. 2. All mechanical air intakes within 10 feet of a termination cap must be a minimum of 3 feet below the termination cap. 3. All gravity air intakes within 3 feet of a termination cap must be a minimum of 1 foot below the termination cap.

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 • Cerona-36, Cerona-42 • 2106-900 Rev. H • 11/08 13