INSTALLATION INSTRUCTION MANUAL for
Bosch Electric Built-in Single & Double Oven
Models HBL 73../74../75../76.. and Models HBN 74../75../76..
BEFORE YOU BEGIN, READ THESE INSTRUCTIONS COMPLETELY AND CAREFULLY
IMPORTANT: Save these instructions for the local electrical inspector’s use.
INSTALLER: Please leave this manual with owner for future reference.
OWNER: Please keep this manual for future reference.
VEUILLEZ LIRE ATTENTIVEMENT CE MANUEL AVANT DE COMMENCER L’INSTALLATION
IMPORTANT: Conservez ce manuel pour l’inspecteur électrique local.
INSTALLATEUR: Veuillez remettre ce manue! au proprietaire de l’appareil
pour référence.
PROPRIÉTAIRE: Veuillez garder ce manuel et vous en servir pour
référence.
© 2002 BSH Home Appliances Corp.
INTRODUCTION
POWER REQUIREMENTS
The oven must be supplied with the proper volt-
age and frequency. The oven is manufactured to be
connected to a three-wire or four-wire, single phase,
240 Volt, 60 Hz AC electrical supply on a separate
circuit fused on both sides of the line. If a 208 Volt
circuit must be used, see Connecting to 208 Volt
Circuit, in this manual. A circuit breaker or time-
delay fuse sized not to exceed the circuit rating of
the appliance specified on the rating plate located
on the frame behind the door of the oven is recom-
mended.
Please read these instructions COMPLETELY
AND CAREFULLY. They will save you time and
effort and help to ensure optimum oven performance.
Be sure to observe all WARNINGS.
These installation instructions are intended for
use by a qualified installer. In addition to these
instructions, the oven shall be installed:
• In the United States, in accordance with the Na-
tional Electric Code/State and Municipal codes
and/or local codes.
The oven must be supplied with copper wires
ONLY.
• In Canada, in accordance with Canadian Electric
Code C22.1-latest edition/Provincial and Munici-
pal codes and/or local codes.
It is recommended that you have the electrical
wiring and hook-up of your oven performed by a
qualified electrician. After installation is complete
have the electrician show you where the main dis-
connect is and which of the circuit breakers/fuses
are for the oven.
These shall be carefully followed at all times.
Note: If installing your oven in Canada please
check to make sure that you have a model
with the UL Canadian listing mark, as
shown below:
CHOOSING OVEN LOCATION
Carefully select the location where the oven will
be placed. The oven should be located for conve-
nient use in the kitchen, but away from strong drafts.
Strong drafts may be caused by open doors or win-
dows, or by heating and/or air conditioning vents or
fans. Make sure that electrical power can be pro-
vided to the location selected.
The UL Canadian listing mark consists of the
circled UL symbol preceded by the letter “C,” as
shown. This should appear on the oven’s rating plate
along with the UL United States listing mark, which
is the circled UL symbol above but not preceded by
the letter “C.”
STEPS FOR INSTALLATION
The following pages provide the necessary infor-
mation for proper installation of the oven arranged
as follows:
TOOLS YOU WILL NEED
• Technical Data
The following tools are needed to install your
new oven:
• Installation Cutout Dimensions, Required Clear-
ances and Mounting instructions for:
>
>
>
Undercounter Installation, Single Oven
Wall Installation, Single Oven
• Tape measure and straightedge or ruler
• Pencil
Wall Installation, Double Oven
• Phillips screwdriver
• Level
• Electrical Supply and Wiring Requirements, Pro-
gramming required if connecting to 208Volt Cir-
cuit. Electrical Connections for 3-wire or 4-wire
Branch Circuit.
• Wire cutters and wire stripper
• 1-inch hole saw
• Final Checklist
• Hand or saber saw
3
TECHNICAL DATA for HBL 73../74../75../76..
SINGLE OVEN
For cutout dimensions see following section titled:
Preparing Location
Electrical Ratings
and Maximum Connected Load
Single Oven
Models
Amperes
Watts
Convection
Oven
Volts Hertz @240V/208V @240V/208V
HBL 732A UC
HBL 735A UC
HBL 736A UC
HBL 742A UC
HBL 745A UC
HBL 746A UC
240/208
240/208
240/208
240/208
240/208
240/208
60
60
60
60
60
60
15.4/17.2
15.4/17.2
15.4/17.2
15.8/17.6
15.8/17.6
15.8/17.6
3,600/3,500
3,600/3,500
3,600/3,500
3,650/3,550
3,650/3,550
3,650/3,550
No
No
No
Yes
Yes
Yes
SINGLE OVEN
DOUBLE OVEN
DOUBLE OVEN
For cutout dimensions see following section titled:
Preparing Location
Electrical Ratings
and Maximum Connected Load
Amperes
Volts Hertz @240V/208V @240V/208V
Convection
Oven
(top/bottom)
Double Oven
Models
Watts
HBL 752A UC
HBL 755A UC
HBL 756A UC
HBL 765A UC
240/208
240/208
240/208
240/208
60
60
60
60
31.2/34.8
31.2/34.8
31.2/34.8
31.6/35.2
7,250/7,050
7,250/7,050
7,250/7,050
7,300/7,100
Yes/No
Yes/No
Yes/No
Yes/Yes
PB
TECHNICAL DATA for HBN 74../75../76..
SINGLE OVEN
For cutout dimensions see following section titled:
Preparing Location
Electrical Ratings
and Maximum Connected Load
Single Oven
Models
Amperes
Watts
Convection
Oven
Volts Hertz @240V/208V @240V/208V
HBN 742A UC
HBN 745A UC
HBN 746A UC
240/208
240/208
240/208
60
60
60
15.8/17.6
15.8/17.6
15.8/17.6
3,650/3,550
3,650/3,550
3,650/3,550
Yes
Yes
Yes
SINGLE OVEN
DOUBLE OVEN
DOUBLE OVEN
For cutout dimensions see following section titled:
Preparing Location
Electrical Ratings
and Maximum Connected Load
Amperes
Volts Hertz @240V/208V @240V/208V
Convection
Oven
(top/bottom)
Double Oven
Models
Watts
HBN 752A UC
HBN 755A UC
HBN 756A UC
HBN 765A UC
240/208
240/208
240/208
240/208
60
60
60
60
31.2/34.8
31.2/34.8
31.2/34.8
31.6/35.2
7,250/7,050
7,250/7,050
7,250/7,050
7,300/7,100
Yes/No
Yes/No
Yes/No
Yes/Yes
5
UNDERCOUNTER INSTALLATION, SINGLE OVEN
Oven electrical supply: Locate junction box
in adjacent cabinet or below bottom
support surface.
HBL Models: 28" opening width
HBN Models: 25-3/8" opening width
Bottom support surface must be solid, level
and able to support at least 150 lbs.
1/4" min. distance between oven
door frame and adjacent doors or
drawer fronts.
Toe space area
HBL Models: 29-1/4" width of oven door frame
HBN Models: 26-5/8" width of oven door frame
NOTE: Decorative inserts
must maintain minimum
spacing as shown
.
Secure oven to cabinet using the screws
provided. Screws should be inserted
through the mounting holes in the positions
indicated in the frame (open door to see
frame and mounting holes). Do not over-
tighten screws.
NOTE: Decorative inserts
must maintain minimum
spacing as shown
.
Refer to and follow Notes and Warning listed under Wall Installation, Single Oven (facing page)
PB
WALL INSTALLATION, SINGLE OVEN
Electrical
supply
junction
box
29-1/4" width
* HBL:
26-5/8" width
* HBN:
* HBL: HBL 73../74../75../76..
* HBN: HBN 74../75../76..
Secure oven to cabinet using the screws provided.Screws
should be inserted through the mounting holes in the
positions indicated in the frame (open door to see frame
and mounting holes). Do not overtighten screws.
6. Be careful when placing oven. DO NOT
pinch the conduit between the oven back
or wall and the inner cabinet wall or floor.
Note: 1. Do not slide oven across floor. Damage
to floor covering or floor could result.
2. The oven support surface must be a mini-
mum 3/4" thick plywood platform, solid,
level and flush with the bottom of the
cabinet cutout.
Securely fasten oven to cabinet using the
screws provided. Failure to do so could result
in oven moving or tipping during use and caus-
ing damage to the oven or cabinets or personal
injury.
3. Use extreme caution when moving or in-
stalling the oven. It is very heavy.
4. Be very careful when moving or install-
ing the oven to avoid damage to the oven
frame or damage to the cabinets.
MISE EN GARDE
Fixez bien le four à l’armoire à l’aide des vis
fournies. Si vous ne le faites pas, cela pourrait
résulter en un déplacement ou un basculement
du four et pourrait endommager le four, les
armoires ou encore causer des blessures.
5. Be sure to level the oven. An oven that is
not level may provide poor or inconsis-
tent baking results.
7
WALL INSTALLATION, DOUBLE OVEN
Electrical
supply
junction
box
29-1/4" wi
26-5/8" width
* HBL:
* HBN:
* HBL: HBL 73../74../75../76..
* HBN: HBN 74../75../76..
Secure oven to cabinet using the screws provided. Screws should be in-
serted through the mounting holes in the positions indicated in the frame
(open door to see frame and mounting holes). Do not overtighten screws.
Note: 1. Do not slide oven across floor. Damage
6. Be careful when placing oven. DO NOT
pinch the conduit between the oven back
or wall and the inner cabinet wall or floor.
to floor covering or floor could result.
2. The oven support surface must be a mini-
mum 3/4" thick plywood platform, solid,
level and flush with the bottom of the
cabinet cutout.
Securely fasten oven to cabinet using the
screws provided. Failure to do so could result
in oven moving or tipping during use and caus-
ing damage to the oven or cabinets or personal
injury.
3. Use extreme caution when moving or in-
stalling the oven. It is very heavy.
4. Be very careful when moving or install-
ing the oven to avoid damage to the oven
frame or damage to the cabinets.
MISE EN GARDE
Fixez bien le four à l’armoire à l’aide des vis
fournies. Si vous ne le faites pas, cela pourrait
résulter en un déplacement ou un basculement
du four et pourrait endommager le four, les
armoires ou encore causer des blessures.
5. Be sure to level the oven. An oven that is
not level may provide poor or inconsis-
tent baking results.
PB
WIRING REQUIREMENTS
When making the wire connections, use the en-
tire length of the conduit provided (3 feet). The con-
duit must not be cut.
Before making connections make sure the power
is off and read and observe the following:
1. A separate three-wire or four wire, single phase,
240 Volt, 60 Hz or 208 Volt, 60 Hz branch circuit
is required for the oven.
ELECTRICAL SUPPLY
Before installing the oven have a qualified elec-
trician verify that your home is provided with ad-
equate electrical service and that the addition of the
oven will not overload the branch circuit on which
it is to be installed. A separate three-wire or four-
wire single phase, 240 Volt, 60 Hz, or a 208 Volt, 60
Hz branch circuit is required.
NOTE: For use with 208V, 60 Hz supply voltage,
see Connecting to 208 Volt Circuit.
2. The oven must be connected with COPPER
WIRE ONLY.
3. In the United States:
For hook-up of the oven you will need to have an
approved junction box installed where it will be eas-
ily reached through the front of the cabinet where
the oven will be located. The oven has 3 feet of con-
duit. Allow two to three feet of slack in the line so
that the oven can be moved if servicing is ever nec-
essary. DO NOT shorten the flexible conduit.
Wiring must conform to the National Electrical
Code, ANSI/NFPA No. 70 latest edition.
You can obtain a copy of the National Electrical
Code by writing:
National Fire Protection Association
Batterymarch Park
Quincy, MA 02269
MISE EN GARDE
WARNING
DANGER DE CHOC ELECTRIQUE
ELECTRICAL SHOCK HAZARD
• The electrical power to the oven branch cir-
cuit must be shut off while line connections
are being made.
• Le courant électrique alimentant le four doit
être coupé durant le branchement.
• N’utilisez pas de rallonge électrique avec
cet appareil.
• Do not use an extension cord with this ap-
pliance.
• Cet appareil nécessite une mise à la terre.
L’extrémité du fil vert (fil de mise à la terre)
doit être reliée à une mise à la terre adéquate.
• Electrical ground is required on this appli-
ance. The free end of the green wire (the
ground wire) must be connected to a suit-
able ground.
Ce fil électrique doit rester relié au four.
• Si les tuyaux d’eau froide comportent des
parties en plastique, des joints non-
métalliques ou d’autres matériaux isolants,
NE LES UTILISEZ PAS pour la mise a la
terre.
This wire must remain grounded to the oven.
• If cold water pipe is interrupted by plastic,
nonmetallic gaskets, union connections or
other insulating materials, DO NOT use for
grounding.
• N’UTILISEZ PAS DE TUYAUX DE GAZ
pour la mise à la terre.
• DO NOT ground to a gas pipe.
• Ne placez pas de fusible sur le fil NEUTRE
ou le fil de MISEA LA TERRE. Un tel fus-
ible pourrait resulter en un choc électrique.
• DO NOT have a fuse in the NEUTRAL or
GROUNDING circuit. A fuse in the NEU-
TRAL or GROUNDING circuit could re-
sult in an electrical shock.
• Si vous avez le moindre doute, faites vérifier
par un électricien que votre appareil est bien
mis à la terre.
• Check with a qualified electrician if you are
in doubt as to whether the appliance is prop-
erly grounded.
Le fait de ne pas se conformer à ces instruc-
tions peut entraîner de sérieuses blessures ou
la mort.
Failure to follow these instructions could re-
sult in serious injury or death.
9
In Canada:
Wiring must conform to Canadian Electrical Code
C22.1- latest edition.
You can obtain a copy of the Canadian Electrical
Code by writing:
CONNECTING TO 208 VOLT CIRCUIT
This option is provided for areas where standard
240 Volt service is not available. This option must
be accessed with the oven connected to power
source, with the oven door (upper oven in double
oven) open, and using the following sequence:
Canadian Standards Association
178 Rexdale Boulevard
Rexdale (Toronto), Ontario, Canada
M9W 1R3
1. Touch CANCEL pad.
2. Turn rotary knob clockwise until you hear
6 double beeps.
4. Wire size (COPPER WIRE ONLY) and connec-
tions must be suitable for the rating of the appli-
ance per the National Electrical Code require-
ments. The flexible armored cable extending from
the oven should be connected directly to the junc-
tion box.
5. The junction box should be located so as to allow
as much slack as possible between the junction
box and the oven so it can be moved if servicing
is ever required.
3. Turn rotary knob counter-clockwise until
you hear 9 double beeps.
4. Touch START pad.
5. Touch COOKING MODE pad; this sets
oven to 208 Volts.
6. Touch START pad to save selection of
208 Volts.
6. A U.L. listed conduit connector must be provided
at each end of the power supply cable.
PB
ELECTRICAL CONNECTIONS
This appliance is manufactured with a green GROUND wire connected to the oven chassis.After making
sure that the power has been turned off, connect the flexible conduit from the oven to the junction box using
a U.L. listed conduit connector. Figures A and B and the instructions provided below present the most
common way of connecting the ovens.Your local codes and ordinances, of course, take precedence to these
instructions. Complete electrical connections according to local codes and ordinances.
3-WIRE BRANCH CIRCUIT
Refer to Figure A, where local codes allow the
connection of GROUND wire from the oven to the
branch circuit NEUTRAL wire (grey or white col-
ored wire):
GROUND wire from the oven and the white wire
from the oven to the branch circuit NEUTRAL
wire (grey or white colored wire).
• Connect the red and black leads from the oven to
the corresponding leads in the junction box.
• If local codes permit, connect the green
Junction box
Red wires
Cable from
power supply
Figure A
Grounded neutral
White
wires
Black wires
Bare or
green wire
Cable
from oven
U.L.-listed conduit connector
4-WIRE BRANCH CIRCUIT
Refer to Figure B:
• Connect the red and black leads from the oven to
the corresponding leads in the junction box.
• Connect the green GROUND wire from the oven
to the GROUND wire in the junction box (bare
or green colored wire).
• Connect the white wire from the oven to the NEU-
TRAL (grey or white) wire in the junction box.
Ungrounded neutral
Figure B
Cable from
power supply
Junction box
White wires
Red wires
Bare or
green wire
Black wires
Cable from
oven
U.L.-listed conduit connector
11
4. Set the clock by following these steps:
a). Touch TIME pad.
FINAL CHECKLIST
To prevent improper connections leading to dam-
age of electrical components and so voiding the
warranty, the following steps must be performed:
b). Turn rotary knob clockwise until CLOCK
appears.
c). Touch TIME pad.
d). Turn rotary knob in either direction. The
time displayed will change in 10-minute in-
crements and indicate AM or PM. Turn the
knob in the opposite direction and the dis-
play will change in one-minute increments.
1. Check the electrical requirements and make sure
you have the correct electrical supply and that
the oven is properly grounded.
2. Turn on the power supply to the oven. When the
oven is first turned on, a time will flash on the
clock. This is the time of the last power interrup-
tion.
e). Touch TIME pad. The clock is now set.
5. Test the BAKE mode with the following steps:
a). Touch COOKING MODE pad.
b). Turn rotary knob clockwise until BAKE ap-
pears.
c). Touch START pad. The cooling fan and oven
lights turn on and the word, PREHEAT, is
displayed.
10:08AM
d). The control will beep and the word, PRE-
HEAT, will disappear when the set tempera-
ture (350º F) is reached.
3. Check power at the junction box wires using a
volt meter having a range of 0-250 VAC. If you
have installed the oven for use on 240 Volt sup-
ply, you should find that the voltage reading be-
tween the black and red wires (Line to Line)
should be 220 to 240 Volts. If you have modified
the oven(s) for use on 208 Volt, the voltage read-
ing between the black and red wires should be
190 to 208 Volts.
e). Touch CANCEL pad to turn oven off.
6. To check the other oven functions refer to the
Using the Oven Controls section of the USEAND
CARE MANUAL.
7. If the oven is working properly, press the rotary
knob so that it is flush with the oven and turn off
the power supply to the oven.
8. Place the cover on the junction box and make sure
the cover is securely fastened and turn on the
power to the oven.
9. Leave these INSTALLATION instructions as well
as the USE AND CARE MANUAL with the
owner.
5551 McFadden Avenue, Huntington Beach, CA 92649 • 800/735-4328
09BH0260 • © 2002 BSH Home Appliances Corp. • Litho in USA 1/02
PB
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