Hearth and Home Technologies II-B Termination Locations, Appliance Opening Minimum Clearances

4 Termination Locations

A. Appliance Opening Minimum Clearances

WARNING

Fire Risk. Explosion Risk.

Maintain vent termination minimum clearances as specified.

= AREA WHERE APPLIANCE IS NOT PERMITTED

D

E

G

FP

A H

X= AIR SUPPLY INLET

FP = APPLIANCE OPENING

M

L

B

B

FP

F FP

FP		B
	FP	I
		A

R

M

FP X

J or K

P

N

FP

Q

(See Note 2)

A	=	0”	clearances above grade, veran-
		(See Note 1)	da, porch, deck or balcony
B*	=	12”	clearances to window or door
			that may be opened, or to per-
			manently closed window.
D	=		vertical clearance to ventilated
		35-5/16”(non-vinyl)
		64-5/16” (vinyl)	soffit located above the hood
			within a horizontal distance of 2
			feet (60 cm) from the center-line
			of the hood
E	=	35-5/16”(non-vinyl)	.. .clearance to unventilated soffit
		64-5/16” (vinyl)
F	=	9”	clearance to outside corner
G*	=	12”	clearance to inside corner
H	=	3 ft. (Canada)	not to be installed above a gas me-
			ter/regulator assembly within 3 feet
			(90cm) horizontally from the center-
			line of the regulator
I	=	3 ft	clearance to service regulator vent
			outlet and electric service

*36” minimum for vinyl windows or vinyl siding.

**a appliance shall not open 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 if the screened porch guidelines are followed.

NOTE 1: Local codes or regulations may require different clearances.

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 terminations or between the appliance and termination. 2. All mechanical air intakes within 10 feet of a termination must be a minimum of 3 feet below the appliance hood. 3. All gravity air intakes within 3 feet of the appliance hood must be a minimum of 1 foot below the termination.

Figure 4.1 Minimum Clearances for Appliance Opening

J	=	9” (U.S.A.)
		12” (Canada)	clearance to non-mechani-
			cal air supply inlet to building
			or the combustion air inlet to
K	=	3 ft. (U.S.A.)	any other appliance
		6 ft. (Canada)	clearance		to a mechanical
			air supply inlet
L**	=	54”	clearance above paved side-
		(See Note 1)	walk or a paved driveway lo-
			cated on public property
M***=		35-5/16”	clearance		under veranda,
			porch, deck, balcony or over-
			hang
		64-5/16”	vinyl
N	=	12”	non-vinyl siding
		36”	vinyl siding
P	=	8 ft.
				QMIN		RMAX
Twilight-II-B				10 feet		2 x Q ACTUAL
1 additional termination cap				Q + 3 feet		1 x Q ACTUAL
2 additional termination caps				Q + 6 feet		2/3 x Q ACTUAL
3 additional termination caps				Q + 9 feet		1/2 x Q ACTUAL
		RMAX = (2 / # caps plus appliance) x QACTUAL

This appliance is approved for installation onto screened porches with the following guidelines:

Minimum porch area: 96 square feet

Minimum ceiling height: 92 inches Minimum two walls must be screened

Minimum top of screen height, side walls: 6 ft. 8 in.

Minimum screen area: 64 square feet

NOTE: There may be some odor and small amounts of soot associated with venting the Twilight-II-B onto a screened porch. Ensuring good cross draft ventilation and routine maintenance of the appliance will maximize comfort and cleanliness.

10 Heat & Glo LifeStyle Collection • Twilight-II-B • 2108-900 Rev. G • 8/07