Whirlpool RH4900 SERIES User Manual
Recommended vent length
Use 3-1/4" x 10" or 7" vent with a maximum
length of 26 feet for vent 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 vent piece used in the system. See
the following examples.
length of 26 feet for vent 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 vent piece used in the system. See
the following examples.
Figure 1
Panel B
7" round
through roof
through roof
roof cap
66"
66"
3-1/4" x 10"
through the roof
through the roof
roof cap
3-1/4" x 10"
damper
damper
damper located
as far from hood
as possible
as far from hood
as possible
Vertical roof venting
wall cap
66"
3-1/4" x 10"
through the wall
through the wall
Vertical roof venting
Horizontal wall venting
roof cap
wall cap
elbows
3-1/4" x 10" to round
vent transition
vent transition
7" min. diameter
round vent
round vent
Figure 4
Figure 3
6.
Remove terminal box cover from range
hood.
hood.
Figure 2
3-1/4" x 10" vent system
Recommended standard fittings
7" vent system
90° elbow
wall cap
3-1/4" x 10"
to 7"
transition
to 7"
transition
Maximum length
= 26 feet
1 - transition
= 4.5 ft.
2 - 90° elbows
= 10 ft.
1 - wall cap
= 0 ft.
8 feet straight
= 8 ft.
Length of 7" system = 22.5 ft.
Maximum length
= 26 feet
1 - 90° elbow
= 5 ft.
8 feet straight
= 8 ft.
1 - wall cap
= 0 ft.
Length of 3-1/4" x
10" system
10" system
= 13 ft.
Recommended standard fittings
6 ft.
2 ft.
3-1/4" x 10" 90°
elbow = 5 ft.
elbow = 5 ft.
3-1/4" x 10" flat
elbow = 12 ft.
elbow = 12 ft.
3-1/4" x 10" wall
cap = 0 ft.
cap = 0 ft.
3-1/4" x 10" to
7" = 4.5 ft.
7" = 4.5 ft.
90° elbow = 5 ft.
45° elbow = 2.5 ft.
3-1/4" x 10" to 7"
90° elbow = 5 ft.
90° elbow = 5 ft.
7" wall cap = 0 ft.
Vented installation
Now start...
With range hood in kitchen.
Slide cardboard or hardboard under range
before moving range across floor to
prevent damaging floor covering.
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.
with a thick, protective covering to prevent
damaging countertop.
1.
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.
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.
Determine which venting method
(roof or wall venting or non-venting) you
need to use. This range hood is shipped for
non-vented installation.
need to use. This range hood is shipped for
non-vented installation.
If non-venting (recirculating) installation is
desired, follow instructions on Panel D.
desired, follow instructions on Panel D.
terminal
box
cover
box
cover
2 ft.
6 ft.
wall cap
3-1/4" x 10"
elbow
elbow
Venting requirements
Venting system must terminate to the
outside.
outside.
Do not terminate the vent in an attic or
other enclosed space.
other enclosed space.
Do not use four-inch laundry-type wall
caps.
caps.
Do not use plastic vent.
Vent system needed for installation is not
included. Wall or roof caps used must have
backdraft damper.
included. Wall or roof caps used must have
backdraft damper.
Determine which outside venting method
needs to be used. NOTE: If a non-vented
(recirculating) installation is desired, follow
instructions on Panel D.
needs to be used. NOTE: If a non-vented
(recirculating) installation is desired, follow
instructions on Panel D.
The length of the vent system and number
of elbows should be kept to a minimum to
provide efficient performance. The size of
the vent system should be uniform. Do Not
install two elbows together. Use duct tape
to seal all joints in the vent system. Vent
system 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 be vented
vertically through the roof through 7" round
vent system.
of elbows should be kept to a minimum to
provide efficient performance. The size of
the vent system should be uniform. Do Not
install two elbows together. Use duct tape
to seal all joints in the vent system. Vent
system 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 be vented
vertically through the roof through 7" round
vent system.
Figures 1-4 show common venting methods
and what types of materials are needed.
and what types of materials are needed.
3.
Remove screws from vent baffle on
top of range hood. Remove vent baffle.
top of range hood. Remove vent baffle.
4.
Turn vent baffle and reinsert in slot in top of
range hood so that the word “Vented” is
facing up. Fasten vent baffle with screws.
range hood so that the word “Vented” is
facing up. Fasten vent baffle with screws.
wiring
knockouts
knockouts
vent
knockouts
knockouts
5.
Remove knockout from the wiring opening
(top or rear) to be used.
For rectangular venting, remove only the
3-1/4" x 10" rectangular opening knockout.
(top or rear) to be used.
For rectangular venting, remove only the
3-1/4" x 10" rectangular opening knockout.
For round ventwork venting through roof,
remove both opening knockouts.
remove both opening knockouts.