Whirlpool RH2 300 Venting requirements, Now start, To install a vented-onlymodel fnstalation

Venting requirements

Vented models only

Non-vented models cannot be converted to vent.

Venting system must terminate to the outside.

Do not terminate the duct in an attic or other enclosed space.

Do not use four-inch laundry-type wall caps.

Do not use plastic duct.

Duct needed for installation is not included. Backdraft damper supplied with product must be used. If roof or wall cap has a damper, do not use damper supplied with hood. Use metal duct only. Rigid metal duct is recommended.

Determine which outside venting method you need to use.

The length of the duct and number of elbows should be kept to a minimum to provide efficient performance. The size of the duct should be uniform. Do Not install two elbows together. Use duct tape to seal all joints in the duct system. Duct can terminate either through the roof or wall. Use caulking to seal exterior wall or roof opening around exhaust hood. For the most efficient and quiet operation, it is

recommended that the range hood be vented vertically through the roof using 7” round duct.

Figures l-4 show common venting methods and what types of materials are needed.

Vertical roof venting

roof cap

, /

Horizontal wall venting

3-l/4” x 10” through the wail

424!lwail cap

Figure 3

roof cao

7” min. diameter round duct

eibows~--~--i-~i:::i.~

3-l/4” x 10” to round duct transition

Figure 4

Recommended duct length

Use 3-l /4” x lo” or 7” duct with a maximum length of 26 feet for duct system. For best performance, use no more than three 90” elbows. To calculate the length of system you need, add the equivalent feet for each duct piece used in the system. See the following examples.

Now start...

With range hood in kitchen.

Slide cardboard or hardboard under range before moving range across floor to prevent damaging floor covering.

Cover countertop, cooktop or set-in range with a thick, protective covering to prevent damaging countertop.

4

1 W Disconnect and move freestanding range from cabinet opening to provide easier access to upper cabinet and rear wall. Put a thick, protective covering over cooktop, set-in range or countertop to protect from damage or dirt.

2 W If your range hood is a vented-only model, determine which venting method (roof or wall venting) you need to use.

If your range hood is a non-vented- (recirculating) only model, go to Step 3a, Panel D.

To install a vented-only model fnstalation:

7” round vent

66”	d	\‘p7”’
		--. .:

Figure 1 1

Vertical roof venting	roof cap
	/

3-l/4” x lo” through the roof

i+Q,

‘3-l/4” x lo” damper

t	r
66”

Figure 2

3- l/4” x lo” duct system

3-l 14” x 10”

eibow ~~KiI13e~

2 h.	1	- 90”	elbow	=	5	ft.
1	8	feet	straight	=	8	ft.
	1	- wall	cap	=	0	ft.

L	Length of 3-l/4”	x
	lo” system	=13	ft.

Recommended standard fittings

3-114” x 10” 90”	3-l/4”	x 10” fiat	3-l/4”	x 10” wail
elbow = 5 ft.	elbow	= 12 ft.	cap	= 0 ft.

7” duct system

9VeibMF6ft.-q,FP

L

		Maximum			length	= 26 feet
		1	- transition			=	4.5	ft.
3-l/i’x	lo”	2	- 90”	elbows		=lO		ft.
to 7”		1	- wall	cap		=	0	ft.
transition		8	feet	straight		=	8	ft.
		Length		of	7” system = 22.5			ft.

Recommended standard fittings

3-114” x 10” to 7” 90” elbow = 5 ft. 90” elbow = 5 ft.

I/

45” elbow = 2.5 ft. 7” wail cap = 0 ft.

\ I knockGuts

knockouts

W Remove knockout from the wirina

opening (top or rear) to be used. - For rectangular venting, remove only the 3-l /4” x lo” rectangular opening knockout for the venting method (roof or wall) you have selected.

terminal box cover

4 W Remove terminal box cover from range hood.

Excessive Weight Hazard

Use two or more people to move and install range hood.

Failure to follow this instruction can result in back or other injury.

keyhole slot

front

of hood

5	w
	W Lift the ranae hood into final

position and center. Mark on the underside of cabinet the location of the four keyhole mounting slots. Set range hood aside on a protected surface.

Panel B