Bosch DHL 755 B User Manual
Bosch
DHL 755 B
ventilation
installation
manual
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Questions?
1-800-944-2904
www.boschappliances.com
5551 McFadden Ave.
Huntington Beach, CA 92649
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Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Before Calling Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety
IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS
Safety
Important Safety
Instructions
Appliance Handling Safety • Unit is heavy and requires at least two people or proper equipment to move.
Safety Codes and Standards • This appliance complies with one or more of the following Standards:
Electric Safety • GROUNDING INSTRUCTIONS
• WARNING: If the information in this manual is not followed exactly, fire or
shock may result causing property damage or personal injury.
• WARNING: Do not repair or replace any part of the appliance unless specifically recommended in the manuals. Improper installation, service or maintenance can cause injury or property damage. Refer to this manual for
guidance. All other servicing should be done by a qualified technician.
• Hidden surfaces may have sharp edges. Use caution when reaching behind
or under appliance.
1) UL 858, The Standard for the Safety of Household Electric Ranges
2) UL 923, The Standard for the Safety of Microwave Cooking Appliances
3) UL 507, The Standard for the Safety of Electric Fans
4) ANSI Z21.1-2000, The American National Standard for Household Cook-
ing Gas Appliances
5) CAN/CSA-C22.2 No. 113-M1984 Fans and Ventilators
6) CAN/CSA-C22.2 No. 61-M89 Household Cooking Ranges
It is the responsibility of the owner and the installer to determine if additional
requirements and/or standards apply to specific installations.
This appliance must be grounded. In the event of an electrical short circuit,
grounding reduces the risk of 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.
• For appliances equipped with a cord and plug, do not cut or remove the
ground prong. It must be plugged into a matching grounding type receptacle
to avoid electrical shock. If there is any doubt as to whether the wall receptacle is properly grounded, the customer should have it checked by a qualified
electrician.
• If required by the National Electrical Code (or Canadian Electrical Code), this
appliance must be installed on a separate branch circuit.
• WARNING: To reduce the risk of fire or electric shock, do not use this fan with
any solid-state speed control device.
• Installer - show the owner the location of the circuit breaker or fuse. Mark it for
easy reference.
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Safety
• Before installing, turn power OFF at the service panel. Lock service panel to
prevent power from being turned ON accidentally.
• WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS, OBSERVE THE FOLLOWING:
a) Use this unit only in the manner intended by the manufacturer. If you have
questions, contact the manufacturer.
b) 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.
• Be sure your appliance is properly installed and grounded by a qualified technician. Installation, electrical connections and grounding must comply with all
applicable codes.
Ventilation Safety • WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS, OBSERVE THE FOLLOWING:
a) Installation work and electrical wiring must be done by qualified person(s)
in accordance with all applicable codes and standards, including firerated construction.
b) Sufficient air is needed for proper combustion and exhausting of gases
through the flue (chimney) of fuel burning equipment to prevent back
drafting. 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.
c) When cutting or drilling into wall or ceiling, do not damage electrical wiring
and other hidden utilities.
d) Ducted fans must always be vented to the outdoors.
Related Equipment Safety • Remove all tape and packaging before using the appliance. Destroy the pack-
aging after unpacking the appliance. Never allow children to play with packaging material.
• Never modify or alter the construction of the appliance. For example, do not
remove leveling legs, panels, wire covers or anti-tip brackets/screws.
• CAUTION: For general ventilating use only. Do not use to exhaust hazardous
or explosive materials and vapors.
• WARNING: To reduce the risk of fire, use only metal ductwork.
Installation
Before You Begin
Tools and Parts
Needed
1. Custom Ventilation Hood and Chimney Assembly
2. Ductwork as necessary (style varies)
3. Duct Tape
4. Phillips Head Screwdriver
Parts Included 1. Filters(2)
2. Halogen bulbs (2, installed)
3. Screws, Flat Phillips 3.5 x 15 cm (4)
Note: You may use Flat Phillips 6 x 5/8 in. screws as a substitute.
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Installation
4. One Way Damper
If parts are missing or damaged, call the number or write to the address listed
inside the front cover.
General Information The ventilation unit is designed for installation inside a custom-built hood and
chimney assembly. It is for ducting to the outside; It cannot be used in conjunction
with a recirculation unit.
Installation height above cooktop is the user’s preference. The lower the hood
above the cooktop, the more efficient the capturing of cooking odors, grease, and
smoke. This hood has been approved for installations as low as 30” (760 mm) and
as high as 36” (900 mm) above the cooktop. The lower height may be inconvenient for tall people and large cooking vessels.
Overall Dimensions
6 3/8”
(160 mm)
3/8” (9 mm)
15”
(380 mm)
9 3/4”
(248mm)
6“ (150 mm)
1 3/8” (35 mm)
20 7/8” (530 mm)
8 7/8”
(225 mm)
9 3/4”
(248mm)
2 1/8” (55 mm)
4“
(100 mm)
13 5/8”
(346 mm)
Figure 5: Overall Dimensions - 20 7/8” (53 cm) models
13 3/4”
(348 mm)
6” (150 mm)
13 3/4”
(348 mm)
6 3/8” (160 mm)
3/8”
(9 mm)
15”
(380 mm)
1 3/8” (35 mm)
28 3/4”
(730 mm)
8 7/8”
(225 mm)
2 1/8” (55 mm)
4”
(100 mm)
13 5/8”
(346 mm)
Figure 6: Overall Dimensions - 28 3/4” (73 cm) models
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Installation
5
Preparation
Electrical Requirements The unit requires a 120V AC, 60Hz. 15A branch circuit. For future service, install
the outlet in an easily accessible location.
Mounting Requirements The unit must be mounted to the surrounding housing. See “General Information”
on page 3 for suggestions for determining hood height.
For best results, install the unit as far up in the housing or hood as possible. This
will improve the function of the appliance.
When calculating the load for the housing support system, be sure to include the
weight of the ventilation unit. See “Ventilation Unit Weight” on page 4. for unit
weight by model.
Table 1: Ventilation Unit Weight
Size Min. Weight
21” (53 cm) 18 1/4 lbs. (8.3 kg)
29” (73 cm) 19 lbs. (8.7 kg)
For proper performance, the housing must cover the entire cooking surface.
Build housing to correspond with Figure 7: Housing Cutout Dimensions - 20 7/8”
(53 cm) models or Figure 8: Housing Cutout Dimensions - 28 3/4” (73 cm) mod-
els.
/8” (15 mm) min.
5/8” (15 mm) min.
13 7/8”
(325.3 mm)
5/8” (16 mm)
19 5/8”
(500.3 mm)
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Figure 7: Housing Cutout Dimensions - 20 7/8” (53 cm) models
Installation
5/8” (15 mm) min.
5/8” (15 mm) min.
13 7/8”
(325.3 mm)
5/8” (16 mm)
Figure 8: Housing Cutout Dimensions - 28 3/4” (73 cm) models
27 5/8”
(700.3 mm)
Ducting Recommendations The unit is for ducting to the outside; it cannot be used in conjunction with a recir-
culation unit.
For the most efficient air flow exhaust, use a straight duct run or as few elbows as
possible.
Do not use flex ducting. Always use metal ductwork with a diameter of 6” (150
mm).
COLD WEATHER installations should have an additional backdraft damper
installed to minimize backward cold air flow and a nonmetallic thermal break to
minimize conduction of outside temperatures as part of the ductwork. The damper
should be on the cold air side of the thermal break. The break should be as close
as possible to where the ducting enters the heated portion of the house.
Always install a metal vent cover where the ductwork exits the house.
Make-Up Air: Local building codes may require the use of make-up air systems
when using ducted ventilation systems greater than specified CFM of air movement. The specified CFM varies from locale to locale. Consult your HVAC professional for specific requirements in your area.
Installation Procedure
WARNING: To avoid electrical shock hazard, before installing,
switch power off at the service panel and lock the panel to prevent the
power from being switched on accidentally.
Unpack Hood Pull hood from outer packaging. Remove and discard all packaging materials.
Remove filter and set aside (See Use and Care manual for removal instructions).
Prepare ductwork Install one-way damper so that the flap opens up (snaps into place). Note: verify
that the flap opens up (toward the ceiling) before continuing. If necessary, install
thermal break and additional backdraft damper.
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Service
Install Housing See “General Information” on page 3 for recommended installation height and
“Mounting Requirements” on page 4 for information on mounting specifications.
Install housing as directed by the manufacturer.
Connect to Ductwork Connect ventilation unit to ductwork in house.
Connect Electric Plug electrical cord into grounded outlet. Before you plug in an electrical cord, be
sure all controls are in the OFF position.
Install the Unit Press unit up into housing until plastic clips on front and rear snap into the hous-
ing. Install 4 screws through tapholes into housing.
Figure 9: Install the Unit
Final Steps Install Filters. See Use and Care manual for detailed instructions.
Test The Installation Test the operation of the blower and the lights.
Note: Be sure to check for backdraft. With the blower on high, close the windows
and doors to the area to ensure that fan does not cause back drafting in any outlet
vent for another appliance.
Service
Before Calling
Service
See Use and Care Manual for troubleshooting information. Refer to the Warranty
in the Use and Care Manual. Please be prepared with the information printed on
your product data plate when calling.
Product Data Plate The data plate shows the model and serial number. It is located under the filter.
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Service
Keep your invoice or escrow papers for warranty validation if service is needed.
Data Plate
behind filter
Figure 10: Data Plate Location
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