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Bosch Combination Ovens
The HBL8743UC, HBL8753UC and HBL87M53UC Bosch
combination ovens are sold as sets, each of which
includes two built-in oven components: a conventional
wall oven (lower oven) and either a built-in speed oven or
a microwave oven(upper oven).
▯ For ease of installation and improved alignment, the
oven components are assembled together in the
customer’s home rather than at the factory.
▯ Each of the components are packed in separate
boxes, which are strapped together prior to shipping.
▯ The combination ovens listed here are approved for
use in a single cutout, using single power connection.
▯ Each conventional oven component is designed with
an oven-mounted junction box on top, which is used
for connecting the upper oven power cable.
▯ The hardware required for mounting the speed oven
on top of the conventional oven will be found inside
the conventional oven box.
▯ Each of the oven components has its own rating label,
the component model number, FD number, etc.
Before you Begin
Tools and Parts Needed
▯ Phillips-head screwdriver
▯ Star-head screwdriver (T20)
▯ Measuring tape
▯ Drill with bit (1/8”)
▯ Gloves
▯ Utility Knife
Parts Included
Phillips head screws (6).
Power Requirements and Grounding
The outlet must be properly grounded in accordance with
all applicable codes.
For Best Installation
The oven can be difficult for two people to handle during
installation. It is recommended that three or more people
be available to assist with lifting the unit into place.
Removal of the oven door (to reduce the unit weight and
to provide necessary gripping points) can be
cumbersome unless the detailed door removal
instructions are followed carefully. Do not attempt to
remove the speed oven door.
Please take time to read and follow the instructions
provided for an improved installation experience.
Checklist
Use this checklist to verify that you have completed each
step of the installation process. This can help you avoid
mistakes.
▯ Before installing the oven, be sure to verify the cabinet
dimensions are correct and the required electrical
connections are present.
▯ Refer to additional information in this manual
regarding Safety, Cabinet Dimensions, Removing
Packaging, Electrical Installation, Testing the
Installation and Customer Service.
▯ Remove the lower oven door to reduce the unit weight
and to provide access to gripping points for lifting. See
“Remove Lower Oven Door Prior to Installation”
information.
▯ Move the oven units into place in front of the cabinet
opening, leaving the bottom packaging on the units to
avoid damaging flooring.
▯ Remove the Star-head screws (T-20 size using Star-
head screwdriver) holding the speed microwave oven
to the base of its carton.
▯ Assemble the two units of the combination oven. See
“Pre-Assembly of the Combination Oven”.
▯ Connect the power cable from the lower oven to the
junction box in the cabinet.
▯ Remove the Star-head screws (T-20 size using Star-
head screwdriver) holding the lower oven to the base
of its carton.
▯ Team-lift the unit directly into the cabinet cutout taking
care not to pinch fingers, scratch arms or hands.
▯ Slide the unit all the way into place.
▯ Fasten the unit to the cabinet opening with the screws
supplied using a Philips screwdriver.
▯ Reinstall the oven door removed in Step 3 above.
▯ Consult the complete installation instructions and
follow the remainder of the procedures listed,
including performing operation test.
▯ INSTALLER- Leave the literature pack and the
accessories with the customer.