Best CP35I429SB Installation Manual

CP34, CP35 AND CP37 SERIES

INTENDED FOR DOMESTIC COOKING ONLY

INSTALLER: LEAVE THIS MANUAL WITH HOMEOWNER.

HOMEOWNER: USE AND CARE INFORMATION ON PAGES 12 and 13.

BEST; Hartford, Wisconsin www.BestRangeHoods.com 800-558-1711

REGISTER YOUR PRODUCT ON LINE AT: www.BestRangeHoods.com/register

For additional information - visit www.BestRangeHoods.com

SV08544 rev. F

HB0078

INSTALLATION INSTRUCTIONS

READ AND SAVE THESE INSTRUCTIONS

!

!

WARNING WARNING

- 2 -

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
listed in the warranty.

2. Before servicing or cleaning unit, switch power off at

service panel and lock 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 qualified personnel 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 guidelines 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. Do not use this unit with any solid-state speed control

device.

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

9. This unit must be grounded.

10. When applicable local regulations comprise more

restrictive installation and/or certification
requirements, the aforementioned requirements
prevail on those of this document and the installer
agrees to conform to these at his own expenses.

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 flambeing food (i.e.: Crêpes Suzette, Cherries
Jubilee, Peppercorn Beef Flambé).

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.

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.

2. NEVER PICK UP A FLAMING PAN — You may be

burned.

3. DO NOT USE WATER, including wet dishcloths or

towels —This could cause a violent steam explosion.

4. Use an extinguisher ONLY if:
A. You own a Class ABC extinguisher and you know

how to operate it.

B. The fire is small and contained in the area where

it started.

C. The fire department has been called.
D. You can fight the fire with your back to an exit.

* Based on “Kitchen Fire Safety 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. Your insert motor has a thermal overload which will
automatically shut off the motor if it becomes
overheated. The motor will restart when it cools down.
If the motor continues to shut off and restart, have the
insert serviced.

5. The minimum hood distance above cooktop must not
be less than 24”. A maximum of 30” above cooktop is
recommended for best capture of cooking impurities.

6. Two installers are recommended because of the large
size and weight of this unit.

7. To reduce the risk of fire and to properly exhaust air,
be sure to duct air outside — Do not exhaust air into
spaces within walls or ceiling or into attics, crawl
space or garage.

8. This product is equipped with a thermostat which may
start blower automatically. To reduce the risk of injury
and to prevent power from being switched on
accidentally, switch power off at service panel and
lock or tag service panel.

9. Because of the high exhausting capacity of this unit,
you should make sure enough air is entering the
house to replace exhausted air by opening a window
close to or in the kitchen.

10. To reduce the risk of fire and electrical shock, the Best
models CP34, CP35 and CP37 Series should only be
installed with their own built-in blowers. Other blowers
cannot be substituted.

11. Please read specification label on product for further
information and requirements.

!

!

- 3 -

- CP34, CP35 AND CP37 POWER PACK SYSTEMS -

8” ROUND

ADJUSTABLE ELBOW

CP37

POWER PACK

CP35

POWER PACK

M

ODEL 634 OR 644

(R

OOF CAP)

M

ODEL 643

(8” R

OUND WALL CAP)

8” R

OUND

STANDARD DUCT

ADAPTER AND DAMPER

8” ROUND (SUPPLIED WITH

SINGLE BLOWER POWER PACKS

)

M

ODEL 437

(H

IGH CAPACITY ROOF CAP)

M

ODEL 441

(10’’ R

OUND WALL CAP)

M

ODEL 410

(10” R

OUND DUCT

— 2 FT. SECTIONS)

M

ODEL 418

(10” ROUND

ADJUSTABLE ELBOW

)

10” R

OUND VERTICAL

IN

-LINE DAMPER (SUPPLIED WITH

DUAL BLOWER POWER PACK

)

D

UAL BLOWER (1200 CFM)

SUPPLIED WITH 48” WIDTH

POWER PACK ONLY

SINGLE BLOWER (600 CFM)
SUPPLIED WITH 30’’, 36’’ AND
42” WIDTH POWER PACK ONLY

10” ROUND ADAPTER
(SUPPLIED WITH DUAL BLOWER

POWER PACK)

CP34

POWER PACK*

*300

CFM AIR FLOW REDUCER

INTEGRATED ON CP34 MODEL

HL0122

2. INSTALL DUCTWORK AND ELECTRICAL WIRING

Plan where and how the ductwork will be installed. Access to the top of the
hood is preferred for connection of ductwork.

Install proper-sized ductwork, elbows and roof or wall cap for the type of blower
you are installing. If installing CP34 or CP35 power pack, use 8” round
ductwork and if installing CP37 power pack, use 10” round ductwork. Use
2” metal foil duct tape to seal duct joints.

The minimum hood distance above cooktop must not be less than 24”.
A maximum of 30” above cooktop is recommended for best capture of
cooking impurities.

Distances over 30” are at the installer and users discretion.
Run 3-wire power supply cable to installation location. Its length should extend

at least 4 feet below the bottom of the custom hood.

Power pack

Roof cap

Wall
cap

HH0101A

8” round duct for CP34 & CP35
or 10” round duct for CP37

8” round adapter & damper
for CP34 & CP35 or
10” round adapter for CP37

24” to 30”
above
cooking surface

8” round elbow for CP34 & CP35
or 10” round elbow for CP37

10” in line
vertical damper for CP37

MODELS CP34 & CP35 (SINGLE BLOWER)

OR CP37 (DUAL BLOWER)

TYPICAL DUCTWORK

1. PREPARE THE INSTALLATION

Make sure that the following items are included:

- Power Pack

- Accessories: • Baffle filters: CP34 and CP35: 3 for the 30’’ and 36’’ width models, 4 for the 42’’ width model; CP37: 5 for
this 48’’ width model

• Baffle filters handles (taped inside the power pack): CP34 and CP35: 3 for the 30’’ and 36’’ width models,
4 for the 42’’ width model; CP37: 5 for this 48’’ width model

• 2 Shielded halogen lamps (120 V, 50 W, MR16 with GU10 base or PAR16 with GU10 base)

• 8” round adapter and damper (included with single blower power packs)

• 10” round in-line vertical damper (included with dual blower power pack)

• 10” round adapter (included with dual blower power pack)

• Bag of parts including: (1) wire clamp, (2) wire connectors, (4) no. 8 x 3/8” screws,
(9) no. 8 x 1/2” chrome plated screws, (10) no. 8-32 x 1/4” screws. If need be, discard extra screws.

Parts sold separately:

- Ducts, elbows, wall and roof caps. Refer to page 3 for a complete list of venting options and model numbers.
NOTE: During installation, protect countertop and/or cooktop.

CAUTION

When performing installation, servicing or cleaning the unit, it is recommended to wear safety glasses and gloves.

3. CUSTOM HOOD PREPARATION

WARNING

When building a custom hood, always follow all applicable construction codes and standards.

!

The custom hood must be constructed to fit the size and shape of the CP34, CP35 or the CP37 power pack models.
See chart and illustration for details.

* Dimensions A and B include rivets head.

”

REAR

FRONT

- 4 -

POWER PACK MODELS

WIDTH

TOTAL

WEIGHT

RANGE HOOD DIMENSIONS

A* B* C

CP34 & CP35

30” 33 LB 195⁄16” 287⁄16” 47⁄8”
36” 37.2 LB 195⁄16” 347⁄16” 47⁄8”
42” 41.6 LB 195⁄16” 407⁄16” 47⁄8”

CP37 48” 56.5 LB 229⁄16” 467⁄16” 57⁄8”

3”

12”

HD0296A

C

L

4½”

7/8

C

A

B

- 5 -

4. MOUNT CUSTOM HOOD INTERNAL FRAMEWORK

5. REMOVE FILTERS

Since the CP34, CP35 and CP37 power pack models mounting holes are
located in front and rear sides (see illustration beside), plan to install wood frame
at front and sides for support.

The CP34, CP35 and CP37 power pack models are supported by the custom hood internal framework with screws provided in
parts bag.

WARNING

The framework must be positively secured to wall studs or other wooden framework behind the drywall.
Make sure it is capable of supporting its own weight and the weight of the CP34, CP35 or CP37. Failure to
do so may cause personal injury or damage to countertop or cooktop.

!

Remove tape on filters. Remove filters from power pack and set aside.
NOTE: It is recommended to start with the center one(s).

To minimize the gap around the power pack, take actual width and depth
measurements of power pack and add 1/16” to get D and E measurements. Cut
the hole in the bottom of the cabinet according to dimensions. See chart and
illustration for details.

3. CUSTOM HOOD PREPARATION (CONTINUED)

POWER PACK

MODELS

WIDTH

CUTOUT DIMENSIONS

D E

CP34 & CP35

30” 193⁄8” 28½”
36” 193⁄8” 34½”
42” 193⁄8” 40½”

CP37 48” 225⁄8” 46½”

D

E

HD0367

HH0102A

HD0295

8. REMOVE THE KNOCK-OUT OPENING

From inside the power pack, remove the wiring cover by removing two (2) retaining
screws and set aside. Punch out the electrical knockout hole on top of the power pack.
Install the wire clamp (included in parts bag).

9. INSTALL THE ADAPTER/DAMPER (CP34 AND CP35 MODELS)

Using (4) no. 8 x 3/8” screws from parts bag, assemble the adapter/damper on the top
of the power pack. To ensure proper opening of the dampers, remove shipping tape if
present. Seal all joints with metal foil duct tape to eliminate air leaks.

HJ0016

MOUNTING SCREW LOCATION

7. REMOVE THE BOTTOM PANEL

Using a Phillips screwdriver, remove both bottom panel
retaining screws and set aside.

Disassemble bottom panel from power pack and set aside.

RETAINING SCREW LOCATION

- 6 -

SIDE VIEW

6. REMOVE GREASE DRIP RAIL

A. Lift grease drip rail to disengage it from

the bottom panel.

B. Slide grease rail all the way to the left or

right (

1

) and lift the opposite end to
disengage the other end from the bottom
panel (

2

). Remove it from the power

pack and set aside for later use.

A

B

1

2

HD0291

HD0292

HO0110

HO0111

HR0027

- 7 -

11. CONNECT WIRING

Using the provided wire connectors, connect power pack wires to power
cable into wiring box.

Connect wires as follow: BLACK to BLACK, WHITE to WHITE and GREEN
or BARE wire under ground screw. DO NOT FORGET TO CONNECT THE

GROUND. Reinstall wiring cover.

WARNING

Risk of electrical shock. Electrical wiring must be done by qualified personnel in accordance with all
applicable codes and standards. Before connecting wires, switch power off at service panel and lock
service disconnecting means to prevent power from being switched on accidentally.

!

HE0059

Position the power pack below the installed custom hood. Insert the house wiring cable through the wire clamp previously
installed in step 8. Tighten the wire clamp to secure the cable.

10. INSTALL THE ADAPTER AND THE DAMPER (CP37 MODEL ONLY)

Using (2) no. 8 x 3/8” screws from parts bag, assemble the adapter on the top of the
power pack. Seal all joints with metal foil duct tape to eliminate air leaks.

HJ0026

MOUNTING SCREW LOCATION

Install 10” damper inside the VERTICAL ductwork that will be attached to power pack.
Do not install in a horizontal ductwork or it will not open and close properly. Remove
shipping tape if present. To optimize airflow and quiet sound, position the damper at
least 17” above the top of the CP37 power pack; or as far as the duct run will allow (see
figure beside). Secure the damper to the duct with 3 no. 8 sheet metal screws (not
provided). Check to make sure damper opens and close freely. Seal all joints with metal
foil duct tape to eliminate air leaks.

17” min.

HJ0017A

- 8 -

CP37 MODEL

For each blower, using a 5/16” socket, remove all blower mounting screws from the inner
top of the power pack front and rear brackets. Set aside the screws.

HD0297

For each blower, slide it to disengage its flanges from the retaining brackets. Set aside the
blowers.

BLOWERS FRONT BRACKET

BLOWERS REAR BRACKET

HD0298

12. REMOVE THE BLOWER(S)

In order to ease the power pack alignment with existing ductwork, unplug and disassemble the blower(s) from the power pack
before installing the custom hood.

HE0085

Unplug the blower(s).

HD0282

RIGHT SIDE

MOUNTING SCREW

LOCATION

Using a 5/16” socket, remove all blower
mounting screws from the inner top of the
power pack. Set aside the screws.

HD0269

LEFT SIDE MOUNTING

SCREW LOCATION

Slide the blower to disengage its flange from
the retaining bracket. Set aside the blower.

HD0270

CP34 AND CP35 MODELS

- 9 -

14. REINSTALL THE BLOWER(S)

HD0282

RIGHT SIDE

MOUNTING SCREW

LOCATION

Using a 5/16” socket, secure the blower to
the inner top of the power pack with all blower
mounting screws (previously removed in
step 12).

HD0269

LEFT SIDE MOUNTING

SCREW LOCATION

Slide the blower to engage its flange in the
retaining bracket.

HD0293

CP34 AND CP35 MODELS

CP37 MODEL

For each blower, using a 5/16” socket, secure the blower to the inner top of the power pack
through the front and rear brackets with all blower mounting screws (previously removed
in step 12).

HD0297

For each blower, slide it to engage its flanges in both retaining brackets.
NOTE: Both blowers are identical and can be mounted on either side of the power pack.

BLOWERS FRONT BRACKET

BLOWERS REAR BRACKET

HD0298

13. INSTALL THE POWER PACK

Using provided no. 8 x 1/2” chrome plated screws, install the power pack inside
the custom hood. Start with 2 screws on front corners, then use 4 screws for
sides and use the remaining ones to finalize securing the front power pack. (See
figure beside for mounting screw specific locations.)
Make sure the adapter/damper (or the adapter) enters the ducting. When there
is access to the top of the power pack, seal connections with metal foil duct tape.

CAUTION

Take care not to kink ducting when installing the power pack.

HH0102A

- 10 -

15. REINSTALL BOTTOM PANEL

Lift the bottom panel and engage the power pack metal tabs
in bottom panel slots, as shown in details A and B below.

Secure the bottom panel to the power pack using its screws
previously removed in step 7.

RETAINING SCREW LOCATION

16. REINSTALL GREASE DRIP RAIL

A. Insert one end of grease rail in power

pack side (

1

) while lifting the other end

over the bottom panel edge (

2

).

B. Center the grease drip rail over the bottom

panel edge and flip it to snap in place.

B

A

1

2

HD0291

HD0292

SIDE VIEW

14. REINSTALL THE BLOWER(S) (CONTINUED)

HE0085

Plug the blower(s) in.

ALL MODELS

AB

HO0112

HO0110

- 11 -

17. REINSTALL BAFFLE FILTERS

NOTE: Assemble the metal handles to the filters, using provided no. 8-32 x 1/4” screws, before installing them in the power pack.

It is recommended to install side filters first and finish with center one(s).

1. Insert one end of the filter into the
upper channel of the power pack.

2. Raise the other end toward the
inside of power pack and insert in
the grease drip rail of the power pack.

CAUTION

Remove protective plastic film covering filters before installing them.

18. LIGHT BULBS

This power pack must use shielded halogen lamps (120 V, 50 W, MR16 with GU10 base or PAR16 with GU10 base), included.
NOTE: Before using lamps, remove shipping tape on them (if present).

1. Install the lamps by placing the bulb leads into their grooves in the socket.

2. Gently push upwards and turn clockwise until secure.

To remove lamps, gently push upwards and turn counterclockwise to disengage bulb leads from their grooves.
NOTE: If need be, use a rubber dishwashing glove to add grip when removing the bulb.

WARNING

In order to prevent the risk of personal injury, do not install a lamp
identified for use only in enclosed fixtures.

!

WARNING

In order to prevent the risk of personal injury, the halogen lamps must
be cooled down before removing them.

!

1

HD0299

2

12

HO0090

- 12 -

Hood Cleaning

Stainless steel cleaning:

Avoid: When choosing a detergent

- Any cleaners that contain bleach will attack stainless steel.

- Any products containing: Chloride, fluoride, iodide, bromide will deteriorate surfaces rapidly.

- Any combustible products used for cleaning such as acetone, alcohol, ether, benzol, etc., are highly explosive and should

never be used close to a range.

Do:

• Regularly wash with clean cloth or rag soaked with warm
water and mild soap or liquid dish detergent.

• Always clean in the direction of original polish lines.

• Always rinse well with clear water (2 or 3 times) after
cleaning. Wipe dry completely.

• You may also use a specialized household stainless steel
cleaner.

Don’t:

• Use any steel or stainless steel wool or any other scrapers
to remove stubborn dirt.

• Use any harsh or abrasive cleansers.

• Allow dirt to accumulate.

• Let plaster dust or any other construction residues reach
the hood. During construction/renovation, cover the hood
to make sure no dust sticks to stainless steel surface.

19. USE AND CARE

Baffle Filters

The baffle filters should be cleaned frequently. Use a warm detergent solution. Wash more often if your cooking style generates
greater grease — like frying foods or wok cooking.
Remove baffle filters by pushing them towards the back of hood and rotating filters downward. Baffle filters are dishwasher safe.
Allow filters to dry completely before reinstalling them in the power pack.

Clean all-metal filters in the dishwasher using a non-phosphate detergent. Discoloration of the filter may occur if using phosphate
detergent or as a result of local water conditions — but this will not affect filter performance. This discoloration is not covered
by the warranty.

Rotary Control Knobs

Can be removed for cleaning but first, loosen the set screw using a 1/16” hexagonal key (available at your local hardware store).

Grease Drip Rail

The grease drip rail should be cleaned frequently. Remove it from the power pack (see step 6 on page 5) and use a warm detergent
solution. As with the baffle filters, wash more often if your cooking style generates greater grease — like frying foods or wok
cooking. Allow grease drip rail to dry completely before reinstalling it in the power pack.

Blower(s) Cleaning

Remove the filters in order to access the blower(s). Vacuum blower(s) to clean. Do not immerse in water.

- 13 -

20. OPERATION

Always turn your hood on before you begin cooking to establish an air flow in the kitchen. Let the blower run for a few minutes
to clear the air after you turn off the range. This will help keep the whole kitchen cleaner and brighter.

HEAT SENTRY™

This hood is equipped with a Heat Sentry™ thermostat. This thermostat is a device that will turn on or speed up the blower if it
senses excessive heat above the cooking surface.

1) If blower is OFF - it turns blower ON to HIGH speed.

2) If blower is ON at a lower speed setting – it turns the blower up to HIGH speed.

When the temperature level drops to normal, the blower will return to its original setting.

WARNING

The HEAT SENTRY™ can start the blower even if the hood is turned OFF. In this case, it is impossible to
turn the blower OFF with blower switch. If you must stop the blower, do it from the main electrical panel.

!

COOKTOP LIGHTING (HALOGEN)

A rotary 3-position knob (1) controls the halogen lights (OFF - low intensity - high intensity).

BLOWER

The blower is operated using two controls.
Use the on/off rocker switch (3) to start and stop the blower. When turned on, the blower operates at the previous setting of the

speed control (2).
Turn the speed control knob counterclockwise to increase blower speed – clockwise to decrease speed.

HC0038

1) H

ALOGEN LIGHT KNOB

2) B

LOWER SPEED CONTROL KNOB

3) ON/OFF

BLOWER SWITCH

2

3

1

A) H

ALOGEN LIGHT KNOB

B) B

LOWER SPEED CONTROL KNOB

A

B

HC0039

- 14 -

WARRANTY

ONE-YEAR LIMITED WARRANTY

Broan-NuTone LLC (“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 AND 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.

The duration of any implied warranty is limited to the one-year period as specified for the express warranty. Some states or
provinces 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 or provinces 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 or province to
another. Any modification performed on this product without the authorization of Broan-NuTone will void this warranty. This
warranty supersedes all prior warranties.

To qualify for warranty service, you must (a) notify Broan-NuTone at the address or telephone number stated 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.

Best®, 926 W. State Street, Hartford, WI 53027 (1-800-637-1453)

www.bestrangehoods.com

21. WARRANTY

- 15 -

22. WIRING DIAGRAM

LINE

NEUTRAL

GROUND

120 V AC

WHT

M

BRN

BLU

RED

BLK

M

BRN

BLU

RED

BLK

WHT

SPEED

CONTROL

HS

THERMOSTAT

BLU

BLK

BLK

BLU

BLK

WHT

WHT

WHT

WHT

BLK

BLK

YEL

YEL

LAMP

LAMP

SWITCH

L 1

2

FAN

SWITCH

BLU

BLU

BLU

BLU

LAMP

COLOR CODE

HE0092A

BLK BLACK
BLU BLUE
BRN BROWN
RED RED
WHT WHITE
YEL YELLOW