Whirlpool 19760268A Venting Requirements, Installation dimensions, Venting methods

Installation dimensions

12"

(30.5 cm)

2" (50.1 mm)

Venting methods

This canopy hood is factory set for venting through the roof or wall.

10-1/2" (26.7 cm)

min.

An 8" (20.3 cm) round vent system is needed for installation (not included). The hood exhaust opening is 8" (20.3 cm) round.

Vent system can terminate either through the roof or wall. To vent through a wall, a 90° elbow is needed.

Rear discharge

	12"
						vent and power
		(30.5 cm)
						supply cable entry
						location
				21"
				(53.3 cm)
side					min.	side
cabinet						cabinet
			36" (91.4 cm)

A 90° elbow may be installed immediately above the hood.

For non-vented (recirculating) installations

Should it not be possible to vent cooking fumes and vapors to the outside, the hood can be used in the non-vented (recirculating) version, fitting an activated carbon filter and the deflector, fumes and vapors are recycled through the top grille.

roof cap

minimum
		30" (76.2 cm) min.
		bottom of canopy to
	centerline
		cooking surface

Venting Requirements

Vent system must terminate to the outside.

Do not terminate the vent system in an attic or other enclosed area.

8" (20.3 cm) round vent

8"
(20.3 cm)
round vent	wall
	cap

deflector

8"

(20.3 cm)

round vent

Do not use 4" (10.2 cm) laundry-type wall caps.

Use metal vent only. Rigid metal vent is recommended. Do not use plastic or metal foil vent.

For the most efficient and quiet operation:

■Use a straight run or as few elbows as possible.

■Use no more than three 90° elbows.

■Make sure there is a minimum of 24" (61 cm) of straight vent between the elbows if more than one elbow is used.

■Do not install two elbows together.

■Use duct tape to seal all joints in the vent system.

■Use caulking to seal exterior wall or roof opening around the cap.

Cold weather installations

An additional backdraft damper should be installed to minimize backward cold air flow and a nonmetallic thermal break to minimize conduction of outside temperatures as part of the vent system. The damper should be on the cold air side of the thermal break.

The break should be as close as possible to where the vent system enters the heated portion of the house.

Make-up air

Local building codes may require the use of make-up air systems when using ventilation systems greater than specified CFM of air movement. The specified CFM varies from locale to locale.

Consult your HVAC professional for specific requirements in your area.

Roof venting	Wall venting	Non-vented
		(recirculating)

Calculating Vent System Length

To calculate the length of the system you need, add the equivalent feet (meters) for each vent piece used in the system.

Vent piece	8" (20.3 cm) round
45° elbow	2.5 feet
	(0.8 m)
90° elbow	5.0 feet
	(1.5 m)

Maximum equivalent vent length is 50 feet (15.2 meters).

90° elbow 6 ft. (1.8 m) wall cap

						Example vent
							system
			1	— 90° elbow	=	5 ft.	(1.5 m)
2	ft.
(0.6 m)			8 ft. (2.4 m) straight		=	8 ft.	(2.4 m)
		1		— wall cap	=	0 ft.	(0 m)
			system length		=	13 ft.	(3.9 m)

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