Hearth and Home Technologies Crescent II Alcove Applications, Vent Termination Minimum Clearances

G R

v

D A H

	E
	v
L	B				U.S.
			B
	v
		v		B	(3 FT)
			v
	F	v		v	I	M	v
								X
				A				J or K

M

N

P

Q

(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 inches

clearances above grade, veran-

K

=

3 ft. (U.S.A.)

(See Note 1)

da, porch, deck or balcony

6 ft. (Canada)

clearance to a mechanical

B

=

12 inches

clearances to window or door

(powered) air supply inlet

L**

=

7 ft

clearance above paved side-

that may be opened, or to per-

(See Note 1)

walk or a paved driveway lo-

manently closed window. (Glass)

cated on public property

D*

=

18 inches

vertical clearance to unventilat-

M*** =

18 inches

clearance under veranda, porch,

ed soffit or to ventilated soffit lo-

deck, balcony or overhang

cated above the terminal

42 inches

vinyl

*30 inches

for vinyl clad soffits and below

S

=

6 inches

clearance from sides of

electrical service

(See Note 5)

electrical service

F

=

9 inches

clearance to outside corner

T

=

12 inches

clearance above electrical

G

=

6 inches

clearance to inside corner

(See Note 5)

service

H

=

3 ft. (Canada)

not to be installed above a gas

Alcove Applications

meter/regulator assembly within 3

feet (90cm) horizontally from the

N

=

6 inches

non-vinyl sidewalls

center-line of the regulator

12 inches

vinyl sidewalls

I

=

3 ft. (U.S.A.)

P

=

8 ft.

6 ft. (Canada)

clearance to gas service regula-

QMIN

RMAX

tor vent outlet

J

=

9 inches (U.S.A.)

1 cap

3 feet

2 x Q ACTUAL

12 inches (Canada)clearance to non-mechanical air

2 caps

6 feet

1 x Q ACTUAL

supply inlet to building or the

3 caps

9 feet

2/3 x Q ACTUAL

combustion air inlet to any other

4 caps

12 feet

1/2 x Q ACTUAL

appliance

QMIN = # termination caps x 3 RMAX = (2 / # termination caps) x QACTUAL

**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 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 permit-

ted 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.

10 Heat & Glo • Crescent II • 2083-902 Rev. G • 9/05