WARNING - To reduce the risk of burns or ignition of clothing by reaching across burners, the downdraft remote control MUST
be mounted in the countertop - at least 4" from the burners. See "INSTALL COOKTOP" section on page 8.
READ AND SAVE THESE INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO
PERSONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you
have questions, contact the manufacturer at the address or telephone
number in the warranty.
2. Before servicing or cleaning unit, switch power off at service panel
and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such
as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a qualified
person(s) in accordance with all applicable codes and standards,
including fire-rated construction codes and standards.
4. Sufficient air is needed for proper combustion and exhausting of
gases through the flue (chimney) of fuel burning equipment to prevent
backdrafting. Follow the heating equipment manufacturer’s guideline
and safety standards such as those published by the National Fire
Protection Association (NFPA), and the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE), and the local
code authorities.
5. When cutting or drilling into wall or ceiling, do not damage electrical
wiring and other hidden utilities.
6. Ducted fans must always be vented to the outdoors.
7. To reduce the risk of fire, use only metal ductwork.
8. Do not install this product with the activating switch directly behind
a burner or element. Minimum distance between the switch and the
edge of the burner should be 4 inches.
9. Loose-fitting or hanging clothing should never be worn when operating
this appliance. They may be ignited by burners/elements on cooktop.
10. Children should not be left alone or unattended in the area where this
appliance is in use.
11. This unit must be grounded.
TO REDUCE THE RISK OF A RANGE TOP GREASE FIRE:
a) Never leave surface units unattended at high settings.
Boilovers cause smoking and greasy spillovers that may
ignite. Heat oils slowly on low or medium settings.
b) Always turn hood ON when cooking at high heat or when
cooking flaming foods.
c) Clean ventilating fans frequently. Grease should not be
allowed to accumulate on fan or filter.
d) Use proper pan size. Always use cookware appropriate
for the size of the surface element.
NOTE: Model RMDDRBK Remote Up/Down
Control sold separately.
INSTALLER:
Save this manual for Electrical
Inspector and Homeowner to use.
WARNING
TO REDUCE THE RISK OF INJURY TO PERSONS IN THE EVENT OF
A RANGE TOP GREASE FIRE, OBSERVE THE FOLLOWING
1. SMOTHER FLAMES with a close-fitting lid, cookie sheet,
or metal tray, then turn off the burner. BE CAREFUL TO
PREVENT BURNS. If the flames do not go out immedi
ately, EVACUATE AND CALL THE FIRE DEPARTMENT.
2. NEVER PICK UP A FLAMING PAN - You may be burned.
3. DO NOT USE WATER, including wet dishcloths or towels
- a violent steam explosion will result.
4. Use an extinguisher ONLY if:
A. You know you have a Class ABC extinguisher, and you
already know how to operate it.
B. The fire is small and contained in the area where it
started.
C. The fire department is being called.
D. You can fight the fire with your back to an exit.
a
Based on “Kitchen Firesafety Tips” published by NFPA.
CAUTION
1. For indoor use only.
2. For general ventilating use only. Do not use to exhaust hazardous or
explosive materials and vapors.
3. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit.
4. Clean filters and grease-laden surfaces frequently.
5. Do not repair or replace any part of this appliance unless specifically
recommended in this manual. All other servicing should be done by
a qualified technician.
6. Please read specification label on product for further information and
requirements.
7. To reduce the risk of fire and electric shock, install this downdraft only
with Rangemaster blower models shown below. Other blowers cannot
be substituted. (blowers sold separately).
Register your product online at: www.broan.com/register
RMDD3604EX 36"External, Model 331H, 332H, 335, 336,
RMDD4804EX 48"External, Model 331H, 332H, 335, 336,
HLB3, HLB6, HLB9, y HLB11 (purchase
separately)
HLB3, HLB6, HLB9, y HLB11 (purchase
separately)
HLB3, HLB6, HLB9, y HLB11 (purchase
separately)
Page 1
a
:
PLANNING
Downdraft Ventilators
Page 2
Internal Blower Installation
This downdraft blower system is
designed to be used to exhaust
airborne contaminants when
cooking with a variety of gas
or electric cooktops. It can be
mounted in island, peninsula,
or conventional wall locations.
This unit can be easily installed
following these basic steps:
• Cut out the countertop
opening.
• Mount the unit in the cabinet.
• Connect the ductwork and
electrical.
• Install the cooktop.
Note: the high level of air flow
of this appliance may effect the
gas flame on some types of gas
cooktops. This is NORMAL and
will cause no harm, but can be
corrected by lowering the speed
of the blower.
TYPICAL INSTALLATION
COUNTER
TOP
BLOWER
COOK TOP
GEAR
MOTOR
COVER
BOX
CHIMNEY TOP
3-1/4" X 10"
DUCT CONNECTOR
ELECTRICAL
SPECIFICATIONS
120 VAC • 60 Hz • 4.0 A
AIR
VENT
120 VAC
GROUNDED
OUTLET
External Blower Installation
This downdraft blower system
is designed to be used to exhaust airborne contaminants
when cooking with a variety
of gas or electric cooktops.
It can be mounted in island,
peninsula, or conventional wall
locations.
This unit can be easily installed
following these basic steps:
Note: the high level of air flow of this appliance may effect the
gas flame on some types of gas cooktops. This is NORMAL and
will cause no harm, but can be corrected by lowering the speed
of the blower.
TYPICAL INSTALLATION
COUNTER
TOP
BLOWER
COOK TOP
GEAR
MOTOR
COVER
BOX
CHIMNEY TOP
AIR
VENT
120 VAC
GROUNDED
OUTLET
3-1/4" X 14"
DUCT CONNECTOR
ELECTRICAL
SPECIFICATIONS
120 VAC • 60 Hz • 6.0 A (max.)
TAKE MEASUREMENTS
All Units
1. Refer to the cooktop installation instructions for dimensions
of cooktop, countertop cut-out, and cabinet requirements.
Models RMDD3004 & RMDD3004EX will fit in most 30" wide
cabinets. Models RMDD3604 & RMDD3604EX will fit in most
36" wide cabinets. Models RMDD4804 & RMDD4804EX will
fit in most 48" wide cabinets. However, it is recommended that
oversized cabinets be used for easier installation.
2. Cooktop depth can vary greatly from one to another. This may
cause the fit of these two appliances to be rather tight.
Pay special attention to the areas of potential interference highlighted above. A countertop with (A) a raised lip and/or (B) a
backsplash may not allow enough flat countertop for a proper
installation. Note that 2-3/8" of flat countertop is required behind
cooktop and that 1-3/4" is necessary between the back edge of
the cooktop and the inside of cabinet back.
1. The interior downdraft blower system is
designed for use with
3-1/4" x 10" ductwork
(can be transitioned
to 6" round). Three
different discharge
directions are available with side-toside adjustment for
accurate alignment of
ductwork.
2. For best performance:
Choose the ducting
option which allows
the shortest length
of ductwork and a
minimum number of
elbows and transitions. Check location of floor joists, wall studs, electrical
wiring or plumbing for possible interference.
LEFT
DISCHARGE
DISCHARGE
DOWN DISCHARGE
RIGHT
1. The exterior downdraft blower system is
designed for use with
3-1/4" x 14"rectangular ductwork (can
be transitioned to 8"
or 10" round). Three
different discharge
directions are available with side-toside adjustment for
accurate alignment of
ductwork.
2. For best performance:
Choose the ducting
option which allows
the shortest length
of ductwork and a
minimum number of
elbows and transitions. Check location of floor joists, wall
studs, electrical wiring or plumbing for possible interference.
LEFT
DISCHARGE
RIGHT
DISCHARGE
DOWN DISCHARGE
6" ROUND
ELBOW
EQUALS 8 FT. OF
STRAIGHT DUCT
3. The system will operate most efficiently when the ductwork
does not exceed 40 feet of equivalent duct. The chart, above,
shows equivalent feet of elbows and transitions. The number
of feet of straight duct plus the equivalent feet of transitions
and/or elbows to be used should equal 40 feet or less.
NOTE: The equivalent feet of various roof and wall caps has
been taken into consideration. Do not include them in this
calculation.
3-1/4" X 10" TO 6" RD.
TRANSITION
EQUALS
2 FT. OF
STRAIGHT DUCT
3-1/4" X 10"
90O ELBOW
EQUALS 14 FT. OF
STRAIGHT DUCT
8" ROUND ELBOW
EQUALS 11 FT. OF
STRAIGHT DUCT
3. The system will operate most efficiently when the ductwork
does not exceed 40 feet of equivalent duct. The chart, above,
shows equivalent feet of elbows and transitions. The number
of feet of straight duct plus the equivalent feet of transitions
and/or elbows to be used should equal 40 feet or less.
NOTE: The equivalent feet of various roof and wall caps has
been taken into consideration. Do not include them in this
calculation.
1. The Internal Downdraft Blower system draws 4 AMPS and
requires a 120 VAC, 60 Hz circuit.
2. The unit has a 18 in. long power cord with a 3-pronged plug.
Plan to provide a grounded outlet in a location which will allow
the unit’s power cord to reach.
IMPORTANT - LOCATION OF ELECTRICAL OUTLET:
If Model RMDD3004 is being installed in a 30" wide cabinet...
or Model RMDD3604 is being installed in a 36" wide
cabinet...
or Model RMDD4804 is being installed in a 48" wide
cabinet...
...the outlet cannot be located on the back wall
of cabinet.
In these cases, the width of the downdraft covers nearly the
entire width of the back wall of the cabinet. So you must
either:
• mount the electrical box to a side wall or cabinet
floor - at least 12 inches from the back wall.
• mount the electrical box to a wall stud behind the
cabinet - where it will not be covered by the downdraft.
Then provide a clearance hole in the back wall of the
cabinet.
PREPARE THE DOWNDRAFT
1. The External Downdraft Blower system draws 6 AMPS and
requires a 120 VAC, 60 Hz circuit.
2. The unit has a 18 in. long power cord with a 3-pronged plug.
Plan to provide a grounded outlet in a location which will allow
the unit’s power cord to reach.
IMPORTANT - LOCATION OF ELECTRICAL OUTLET:
If Model RMDD3004EX is being installed in a 30" wide
cabinet...
or Model RMDD3604EX is being installed in a 36" wide
cabinet...
or Model RMDD4804EX is being installed in a 48" wide
cabinet...
...the outlet cannot be located on the back wall
of cabinet.
In these cases, the width of the downdraft covers nearly the
entire width of the back wall of the cabinet. So you must
either:
• mount the electrical box to a side wall or cabinet
floor - at least 12 inches from the back wall.
• mount the electrical box to a wall stud behind the
cabinet - where it will not be covered by the downdraft.
Then provide a clearance hole in the back wall of the
cabinet.
Blower Duct Connection Installation (all blowers)
The downdraft is shipped with duct connector pointing toward the
bottom of the unit. If you wish to change this orientation, follow
the steps below:
1. Place the downdraft on its back on a table of flat work surface.
2. Remove the 4 nuts and 2 clamp channels.
3. Remove 2 screws and the gear motor cover.
4. Carefully position the blower under the bottom flange of
the downdraft with the 3¼" x 10" discharge (3¼" x 14" for exterior or in-line blower) pointed in the desired direction.
5. Connect motor plug.
6. Replace the gear motor cover and 2 sheet metal screws.
7. Replace the 2 clamp channels and start the 4 nuts, do not
tighten.
8. Slide blower left of right to desired position. Use cover plate
(supplied) to close up any open space.
9. Tighten 4 nuts to secure top of blower. Use additional screws
(supplied) through bottom flange to secure bottom in blower.
CLAMP
CHANNELS
SCREWS
GEARMOTOR
COVER
3¼" X 10" DISCHARGE
(3¼" X 14" FOR EXTERNAL BLOWER)
NUTS
BLOWER
MOTOR
PLUG
ADDITIONAL
SCREWS
BOTTOM
FLANGE
COVER
PLATE
CUT COUNTERTOP OPENING
All Units
1. Lay out and cut the cooktop cut-out far enough FORWARD so
downdraft will fit behind it.
2. Set cooktop in place and slide it as far forward as possible.
Center and square it with edges of countertop.
Downdraft Ventilators
Page 6
3. Place the plastic template against the back flange of the cook-
top and center it. Trace around template to mark the downdraft
opening.
4. Remove cooktop from countertop.
5. Cut downdraft opening. Be careful not to chip edges of coun-
tertop.
MOUNT THE UNIT
!
All Units
1. Set downdraft into opening. Extend leveling brackets to floor
of cabinet so downdraft sits straight. (Note: Leveling brackets
can be removed and re-attached in other positions. Bottom
flange may have to face inward in tight cabinet installations.)
2. Secure the downdraft to the countertop as follows: Hold the
downdraft against the back of countertop cut-out and tightening the two mounting screws (one on each end of unit) on
underside of countertop. Use a wood shim between screw
and underside of granite countertops.
3. Screw leveling brackets to bottom of cabinet. Tighten screws
holding leveling bracket to unit on each side.
INSTALL DUCTWORK
Downdraft Ventilators
Page 7
MOUNTING SCREWS
LEVELING BRACKET -
FLANGE FACING OUT
LEVELING BRACKET -
FLANGE FACING IN
Blower Installation
CAUTION:
BEFORE CUTTING HOLE IN
CABINET FOR DUCTWORK,
check for interference with floor
joists, wall studs, electrical wir-
ing, or plumbing.
1. Cut hole in cabinet as well as holes in wall or floor as necessary.
2. Mount the roof or wall cap and work back towards the cabinet,
attaching all ductwork, elbows and transitions as previously
planned. Tape all ductwork connections to make them secure
and air tight.
3. Connect ductwork (and transition, if required) to downdraft.
If necessary, LOOSEN nuts and screws that hold the blower
in place, and slide blower left or right to meet ductwork. Retighten screws and nuts.
Note: A 3¼" x 10" collar (3¼" x 14" collar for external blower)
is provided for installers who prefer to rivet the ductwork to the
unit. This will allow blower to be removed and replaced easily in
service situations without disturbing ductwork.
BLOWER
SCREWS
COLLAR
3¼" X 10"
TO 6" RD.
TRANSITION
(3¼" X 14" TO 8"
RD. TRANSITION
FOR EXTERNAL
BLOWER
8" RD. ELBOW
& DUCTWORK
INSTALL ELECTRICAL WIRING
!
!
Downdraft Ventilators
Page 8
Internal Blower Installation
CAUTION: All electrical wiring should be done
by a qualified person(s) in accordance with all
applicable codes and standards.
1. Mount a standard wiring box, with 3-pronged receptacle, inside
the cabinet. Make sure the downdraft's power cord can easily
reach it.
2. Run appropriate power cable into cabinet and connect it to
receptacle.
3. Plug the downdraft's power cord into the outlet. Make sure that
the power cord is routed away from the heat generated by the
cooktop.
INSTALL COOKTOP
All Units
External Blower Installation
CAUTION: All electrical wiring should be done
by a qualified person(s) in accordance with all
applicable codes and standards.
1. Mount a standard wiring box, with 3-pronged grounded receptacle, inside the kitchen cabinet. Make sure the unit's power
cord can easily reach it.
2. Run appropriate power cable into cabinet and connect it to
electrical box and receptacle.
3. External blower may not exceed 6.0 Amp rating.
4. Run 2-wire plus ground power cable from the external blower
to wiring box on adaptor plate. Remove wiring box cover.
5. Connect wiring harness to power cable from external blower.
Wire black to black, white to white, and green to green or bare
wire.
6. Replace wiring box cover.
7. Plug the downdraft's power cord into outlet. Make sure that
the power cord is routed away from the heat generated by the
cooktop.
1. Align the cooktop with the downdraft and fasten cooktop in
place.
Note: Accurate alignment of cooktop and downdraft is necessary
to ensure that there is no interference when air vent is raised and
lowered. There should be a gap of 1/32" - 1/16" between the back
of the cooktop and the front of the downdraft cover.
COOKTOP
UP / DOWN
CONTROL
COUNTERTOP
Note:
The downdraft up/down control must be mounted into the coun-
tertop, at least 4" from the cooktop.
Downdraft Ventilators
ON DOTTED LINE
2.000
.750
.750
REMOTE UP/DOWN CONTROL INSTALLATION (OPTIONAL)
All Units
When to use the Remote UP/DOWN Control
The Remote UP/DOWN Control should be used when your cooktop
has a burner that is within 4 inches of the UP/DOWN Button on
the downdraft chimney.
The Remote UP/DOWN Control can be used for convenient UP/
DOWN operation of the downdraft chimney (even when a burner
is more than 4 inches from the UP/DOWN Button of the downdraft
chimney).
How to use the Remote UP/DOWN Control
Do not place the remote control where it will interfere with cooking, where hot pans could be set, or where hot liquids could be
spilled on the control.
The Remote UP/DOWN Control disables the UP/DOWN function
of the UP/DOWN Button on the downdraft chimney.
Installation
1. Using the template at right, lay out the 3-hole pattern on the
counter top. Mark the centers of the three holes to be drilled.
2. Carefully drill the three holes through the counter top. Be careful
not to damage or chip the counter top surface when drilling
the holes.
3. Remove the control from the plastic bag. Line the control up
with the three holes and position the control so it is parallel
with the front of the counter top.
4. Remove the two nylon thumbnuts from the plastic bag and
thread onto the two studs on the control from below the counter
top. Hand tighten only.
WARNING: To reduce the risk of burns or ignition
of clothing by reaching across burners, the remote
control must be mounted at least 4" away from any
cook top burner.
5. Remove the blower, clamp channels, and gearmotor cover from
downdraft (see"Prepare the Downdraft" on page 5). Remove
the large panel to expose the downdraft's wiring.
.625
.438
DIA.
HOLE
1.000
CUT OUT ON DOTTED LINE
WIRING
BOX
2.000
.625
.250 DIA.
HOLES
CUT OUT
Page 9
WIRING
BOX
LOWER
RIGHT
SIDE
OF
DOWNDRAFT
CABINET
FLOOR
6. At the lower right hand corner of downdraft, unplug the cable
from the left side of the wiring box.
REMOTE
CABLE
7. Remove remote cable from the plastic bag and plug into back
of control from below counter top. Route cable through cabinet
to lower right hand corner of downdraft and through the clearance holes in the side of downdraft and wiring box. Plug cable
into circuit board plug, as shown.
8. Stuff excess cable out of the way, secure the cable so it is
not damaged by items stored in the cabinet, and reassemble
downdraft.
USE AND CARE
All Units
WARNING: Always disconnect electric power
supply before cleaning and/or servicing unit.
Downdraft Ventilators
Page 10
Cleaning
Use a mild detergent suitable for painted surfaces. DO NOT USE
ABRASIVE CLOTH, STEEL WOOL PADS, OR SCOURING POWDERS. Vacuum blower to clean. Do not immerse blower in water.
Wash the 2 aluminum/stainless steel grease filters in a mild detergent solution or a dishwasher. Remove them from the air vent
by grasping the tab at the top of each filter.
Always turn the downdraft blower on before you begin cooking
to establish an air flow in the kitchen. Let the blower run for a few
minutes to clean the air after you turn the cooktop off. This will
keep the whole kitchen cleaner and brighter. The activating switch
is pressed and the air vent rises.
BACKSIDE OF
REMOTE SWITCH
TEMPLATE
Servicing
It may be necessary to remove the downdraft blower system from
the cabinet in order to service components such as the blower
motor or air vent mechanism.
Disconnect power to the cooktop and remove it first. Reverse the
steps under “MOUNT THE UNIT” to remove the downdraft from
the cabinet.
OPERATION
All Units
Downdraft Ventilators
Page 11
Turn the downdraft blower ON by pressing down on the activating
switch. The air vent will rise.
KNOB
The blower can be turned ON or OFF and its speed can be
adjusted with the recessed knob on the right side of the air vent.
WIRING DIAGRAM
Turn the downdraft blower OFF by pressing the activating switch
again. The air vent will go down and the blower will shut OFF.
Note: For most convenient operation, set the blower to your favorite speed. The blower will come on to this speed whenever the
activating switch is pressed and the air vent rises.
Heat Sentry
When chimney is UP and blower is ON (at any speed) or OFF:
If the exhaust temperature becomes higher than expected, the Heat
Sentry mode will activate and increase the blower speed to HIGH.
Lowering the chimney will turn blower OFF - even if Heat Sentry
is active.
Downdraft Ventilators
Page 12
SERVICE PARTSWARRANTY
BROAN ONE YEAR LIMITED WARRANTY
Broan warrants to the original consumer purchaser of its
products that such products will be free from defects in
materials or workmanship for a period of one year from
the date of original purchase. THERE ARE NO OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, IMPLIED WARRANTIES OR
MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
During this one-year period, Broan will, at its option, repair
or replace, without charge, any product or part which
is found to be defective under normal use and service.
THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS, TUBES, HALOGEN
AND INCANDESCENDT BULBS. This warranty does
not cover (a) normal maintenance and service or (b) any
products or parts which have been subject to misuse,
negligence, accident, improper maintenance or repair
(other than by Broan), faulty installation or installation
contrary to recommended installation instructions.
The duration of any implied warranty is limited to the
one-year period as specified for the express warranty.
Some states do not allow limitation on how long an
implied warranty lasts, so the above limitation may not
apply to you.
BROAN’S OBLIGATION TO REPAIR OR REPLACE, AT
BROAN’S OPTION, SHALL BE THE PURCHASER’S
SOLE AND EXCLUSIVE REMEDY UNDER THIS
WARRANTY. BROAN SHALL NOT BE LIABLE FOR
INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH
PRODUCT USE OR PERFORMANCE.
Some states do not allow the exclusion or limitation
of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you
may also have other rights, which vary from state to state.
This warranty supersedes all prior warranties.
To qualify for warranty service, you must (a) notify Broan
at the address or telephone number below, (b) give the
model number and part identification and (c) describe
the nature of any defect in the product or part. At the
time of requesting warranty service, you must present
evidence of the original purchase date.