KitchenAid 3182048 Exterior Mounted vent Motor, Recommended standard fittings

Downdraft		Vent (cont.)
Exterior	mounted vent	motor
installation	methods	Roof venting

To install ductwork under a concrete slab, see Insert Sheet.

Do not install exterior vent motor in a window well.

Recommended duct length for exterior mounted blower

Use 9” duct with a maximum length of 55 feet for duct system. For best performance use no more than five 90” elbows.

To calculate the length’ of the system you need, add the equivalent feet for each duct piece used in the system.

Island location

Figure 5

Interior wall location

Figure 7

One exterior power vent motor can be used to operate two downdraft vent systems. The motor can be operated by either downdraft vent control. A T-vent Adapter Kit, (Black 4175456, White 4319251, Almond 4319252) must be used and is available from your dealer or authorized parts distributor. The maximum length of the ductwork including elbows for a T-vented system is 45 feet. The T-vent is the equivalent of 10 feet. Instructions for installing a T-vented system are included with the kit.

See	the	following	example:
9”	duct	system	9” round

IMaximum length = 55 feet

2	- 90 elbows		=lOft.
1	- wall	cap	=	0	ft.
10 feet		straight	=	10	ft.
Length		of 9” system	= 20 ft.

Recommended standard fittings

3-l /4”	x 14” to 9”	3-l 14” x 14” to 9”	9” to 3-l/4”	x 14”
= 4.5	ft.	I 90” elbow = 5 ft.	I 90” elbow	= 9 ft.

Figure 6

90” elbow = 5 ft. 9” to 3-l/4” X 14” = 450 e,bow = 2.5 ft. 1 ft.