Broan 273603, 273003 Installation Manual

MODELS 2730 & 2736 ECLIPSE

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DOWNDRAFT BLOWER SYSTEM

READ AND SAVE THESE INSTRUCTIONS

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INTENDED FOR DOMESTIC COOKING ONLY

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. Do not use this range hood with an additional speed control
device.

7. Ducted fans must always be vented to the outdoors.

8. To reduce the risk of fire, use only metal ductwork.

9. 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.

10. Loose-fitting or hanging clothing should never be worn when
operating this appliance. They may be ignited by burners/ele­ments on cooktop.

11. Children should not be left alone or unattended in the area where
this appliance is in use.

12. This unit must be grounded.

TO REDUCE THE RISK OF A RANGE TOP GREASE FIRE:

1. 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.

2. Always turn hood ON when cooking at high heat or when cooking
flaming foods.

3. Clean ventilating fans frequently. Grease should not be allowed
to accumulate on fan or filter.

4. Use proper pan size. Always use cookware appropriate for the
size of the surface element.

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 immediately,
EVACUATE AND CALL THE FIRE DEPARTMENT.

a

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WARNING

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.

To avoid motor bearing damage and noisy and/or unbalanced

3.
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.

GROUNDING INSTRUCTIONS

WARNING - This appliance must be grounded. In the event of an
electrical short-circuit, grounding reduces the risk of the electric
shock by providing an escape wire for the electric current. This
appliance is equipped with a cord having a grounding wire with
a grounding plug. The plug must be plugged into an outlet that
is properly installed and grounded.

WARNING - Improper grounding can result in a risk of electric shock.
Consult a qualified electrician if the grounding instructions are

not completely understood, or if doubt exists as to whether the
appliance is properly grounded.

Do not use an extension cord. If the power supply cord is too short,
have a qualified electrician install an outlet near the appliance.

:

Register your product online at: www.broan.com/register

INSTALLER: Save this manual for Electrical Inspector and Homeowner to use.

HOMEOWNER: Use and Care Information on Page 5.

1

PLANNING - (continued)

PLANNING

PLAN THE DUCTWORK

This downdraft blower system is
designed to be used to exhaust
airborne contaminants when
cooking with a variety of gas

TYPICAL INSTALLATION

COUNTER

TOP

COOK TOP

CHIMNEY TOP

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

•

GEAR
MOTOR
COVER

BLOWER

BOX

AIR
VENT

120 VAC
GROUNDED
OUTLET

electrical.

Install the cooktop.

•

3-1/4" X 10"
DUCT CONNECTOR

Note: The high level of air flow of this appliance may affect 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.

SPECIFICATIONS

VOLTS AMPS CFM DUCT

120 4.0 500 3-1/4 X 10

RIGHT
DISCHARGE

LEFT
DISCHARGE

DOWN
DISCHARGE
(as shipped)

1. This 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-to-side 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.
NOTE: The unit is shipped with the 3-1/4" x 10" discharge
facing DOWN. See “CHANGING BLOWER DIRECTION” on
page 3, if necessary.

6" ROUND
ELBOW

3-1/4" X 10"
TO 6" RD.
TRANSITION

TAKE MEASUREMENTS

1. Refer to the cooktop installation instructions for dimensions of
cooktop, countertop cut-out, and cabinet requirements. The
Model 2730 will fit in most 30" wide cabinets and the Model
2736 will fit in most 36" 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" 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.

EQUALS 6 FT. OF
STRAIGHT DUCT

3-1/4" X 10"
90O ELBOW

EQUALS 8
FT. OF
STRAIGHT DUCT

EQUALS 2
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.

PLAN THE WIRING

1. The downdraft blower system draws 4 AMPS and requires a
120 VAC, 60 Hz circuit.

2. The unit has a 2 ft. 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. (Note: If the Model 2730 is be­ing installed in a 30" wide cabinet or the Model 2736 is being
installed in a 36" wide cabinet, the outlet cannot be located
on the back wall of cabinet.) Outlet may also be wall-mounted,
with access hole in cabinet.

2

PREPARATION

CUT COUNTERTOP OPENING

CHANGING BLOWER DISCHARGE (Optional)

The blower is shipped with its discharge facing DOWN. Follow
these steps ONLY if:

the position of the blower discharge needs to be moved so duct-

work does not interfere with floor joists, plumbing or wiring below.

it is necessary to rotate the blower discharge to the RIGHT or LEFT.

Place the unit on its back on a table or work surface.

DOWN DISCHARGE - MOVING BLOWER LEFT OR RIGHT

NUTS

CLAMP

CHANNEL

BLOWER

1. Loosen the 4 nuts and 2 clamp channels.

2. Slide blower to desired position.

3. Use supplied cover plate to close open space (if any).

4. Tighten wing nuts to secure top of blower and use sheet metal
screws through bottom flange to secure bottom of blower.

SHEET
METAL
SCREW

BOTTOM
FLANGE

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.

3. Place the plastic template against the back flange of the cook­top 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 coun­tertop.

MOUNT THE UNIT

LEFT OR RIGHT DISCHARGE

BLOWER

NUT

MOTOR

CLAMP
CHANNEL

PLUG

SHEET
METAL
SCREW

COVER PLATE

1. Remove the 4 nuts and 2 clamp channels.

2. Carefully lift blower and disconnect motor plug if necessary.
Reposition blower and RECONNECT MOTOR PLUG.

3. Use supplied cover plate to close open space (if any).

4. Replace clamp channels and use nuts to secure the blower
in its new position.

5. Use sheet metal screws through bottom flange to secure bot­tom of blower.

MOUNTING SCREWS

LEVELING BRACKET ­FLANGE FACING OUT

LEVELING BRACKET ­FLANGE FACING IN

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 2 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

3

holding leveling bracket to unit on each side.

INSTALL DUCTWORK

CAUTION - BEFORE CUTTING HOLE IN CABINET FOR DUCT-

WORK: Check for interference with floor joists, wall studs, electrical
wiring or plumbing.

WIRING DIAGRAM

BLOWER





SCREWS

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 3-1/4" x 10" collar 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.

COLLAR

3-1/4" X 10"
TO 6" RD.
TRANSITION

6" RD.
ELBOW &
DUCT­WORK

INSTALL 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.

ADJUSTMENT

The downdraft is factory-adjusted for proper operation. However,
shipping and handling may affect the position of the activating
switch.

To adjust position of activating switch:

WARNING: To avoid possible electrical

shock, personal injury or death -

Disconnect electrical power.

INSTALL ELECTRICAL WIRING

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.

1. If downdraft is plugged into electrical outlet, unplug it.

2. Lift air vent straight up and cock it slightly so it remains in the
UP position.

SWITCH
MEMBRANE

SCREWS

SWITCH
BRACKET

3. Remove switch cover from right end of air vent.

4. Loosen the 2 screws holding the switch bracket in place. Po­sition switch bracket so that activating switch just comes in
contact with underside of switch membrane. Tighten screws.

5. Replace switch cover, gently lower air vent into chimney, and

4

plug in power cord. Re-connect electrical power and check
operation.

SWITCH
COVER

USE AND CARE

USE AND CARE - (Continued)

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.

CONTROLS

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.

CLEANING

WARNING: Always disconnect electric
power supply before cleaning unit.

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 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.

Note: The filters are different sizes. Be sure to replace them as
removed, (wider one on the left), with tabs UP.

SERVICING

WARNING: Always disconnect electric
power supply before servicing unit.

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.

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.

5

SERVICE PARTS

Models 2730 & 2736 Downdraft Blower Systems

KEY NO. PART NUMBER DESCRIPTION QTY.

1 93400038 Bushing, 7/8” 1
2 99400061 Bushing, Split Heyco, 5/8” 1
3 99400024 Bushing, Heyco, 1/2” 1
4 99470016 Roller 1
5 97011238 Switch Assembly, Up/Down 1
6 97010714 Wire Harness, Speed Control 1
7 99260491 Nut, 3/8-32 1
8 99360165 Knob 1
9 99100484 Motor Insolator 3
10 97009972 Lower Switch Bracket Assembly 1
11 97011293 Green Ground Wire 1
12 97010993 Wire Harness 1
16 98007642 Back-up Plate 1
17 97018840 Crank Assembly (Includes Key Nos. 4, 16, 66, 1
68 & mounting nuts)
18 98010813 Switch Cover 1
19 98018523 Chimney Assembly (Model 2730) (Includes 1
Key Nos. 5, 8, 19, 45, 51, 52, 71 & 84)
98018524 Chimney Assembly (Model 2736) (Includes 1
Key Nos. 5, 8, 19, 45, 51, 52, 71 & 84)
20 99080362 Motor (with Capacitor-Key No. 73) 1
21 99020247 Blower Wheel 1
22 98010810 Scroll Box Extension 1
23 99710032 Spacer 3
24 97011259 Top Bracket Assembly, Right 1
25 97011260 Top Bracket Assembly, Left 1
26 97011322 Top, Stainless (Model 2730) 1
97011323 Top, Stainless (Model 2736) 1
28 97018476 Scroll Box Assembly 1
29 97011443 Gear Motor Cover 1
30 97010994 Air Box Assembly (Model 2730) 1
97010992 Air Box Assembly (Model 2736) 1
31 98010809 Scroll Box Cover 1
32 98008157 Capacitor Strap 1
33 97009786 Filter Kit (Model 2730) (contains 2 filters) 1
97009787 Filter Kit (Model 2736) (contains 2 filters) 1
45 99090905 End Cap 1
46 99080590 Gearmotor 1
47 99110850 Slide Strip 4
49 99170245 Screw, #8-18 x .375 SLT HX WS HD 19
50 99150471 Screw, #10-32 x .500 HX WS BDRH 2
51 99150491 Screw, #8-18 x .375 SR PH TRH 6
52 99150488 Screw, #8-18 x .500 No. 5 PH Trim 2
53 98010802 Cover, Air Box Opening (Model 2730) 1
98010803 Cover, Air Box Opening (Model 2736) 1
54 99260488 Nut, #10-24 4
55 98010822 Air Box Cover (Model 2730) 1
98010823 Air Box Cover (Model 2736) 1
56 97011500 Gearmotor Bracket Assembly 1
57 98008159 Leg Support 2
58 99150536 Screw, 1/4-20 x 5/16 5
59 99250927 Washer, 1/4 2
60 99150479 Screw, #8-32 x 1/2 PH HD MS 4
61 99160356 Screw, #10-24 x 3/8 SH WH LOCK 1
62 99160361 Screw, #10-24 x 3/8 PH FL HD LD 1
64 99260488 Nut, 10-24 HEX 5
65 99260477 Nut, 1/4-20 WHIZ LOCK 3
66 99380633 U-Bolt, 10-24
67 99400048 Strain Relief 1
68 93260447 Nut, Hex Flange 1
70 98010804 Airbox Clamp 2
71 93270493 Wire Tie 3
73 99271000 Capacitor 1
74 99160384 Screw, 1/4-20 x 2.000 HEX HD 2
75 99150415 #8-18 x .250 PH TR HD BPT 2
84 99100544 Seal - Foam (30”) 1
99100545 Seal - Foam (36”) 1
** 97018534 Blower Assembly, Complete (Includes Key
Nos.2, 9, 20, 21, 22, 28, 31, 32, 49, 58, 64,
65 & 73)

*Standard Hardware - May be purchased locally.

**Service Assembly - Contains numerous parts.

(Includes Key No. 16 and mounting nuts)

6

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OPTIONAL DOOR KITS

MODEL NO. DESCRIPTION
273001C 30" White
273002C 30" Biscuit
273023C 30" Black
273601C 36" White
273602C 36" Biscuit
273623C 36" Black

Replacement parts can now be

ordered on our website.

Please visit us at www.Broan.com

SERVICE PARTS

Models 2730 & 2736
Downdraft Blower Systems

75

84

7

WARRANTY

Broan-NuTone 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 OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

During this one-year period, Broan-NuTone 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 INCANDESCENT BULBS, FUSES, FILTERS, DUCTS, ROOF CAPS, WALL CAPS
AND OTHER ACCESSORIES FOR DUCTING. 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-NuTone), faulty installation or installation
contrary to recommended installation instructions.

BROAN-NUTONE ONE YEAR LIMITED WARRANTY

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-NUTONE’S OBLIGATION TO REPAIR OR REPLACE, AT BROAN-NUTONE’S OPTION,
SHALL BE THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY.
BROAN-NUTONE 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-NuTone 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.

Broan-NuTone LLC, 926 W. State Street, Hartford, Wisconsin 53027
www.broan.com 800-558-1711 www.nutone.com 888-336-3948

Broan-NuTone Canada, Inc., 1140 Tristar Drive, Mississauga, Ontario L5T 1H9
www.broan.ca www.nutone.ca 877-896-1119

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99044708B