Bosch HMV3022U Installation Instruction

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4.
Insert the two remaining self-aligning screws through 
outer top cabinet holes. Turn two full turns on each 
screw.
5.
Tighten center screw completely.
6.
Tighten the outer two screws completely to the top of 
the microwave oven.
Note:  While tightening screws, hold the microwave 
oven in place against the wall and the top cabinet.
7.
Install grease filters by sliding them into the side slots, 
then pushing up and toward oven to lock (image 
shows bottom view of appliance).
Hood exhaust
When venting exhaust to the outside, hood exhaust 
ducts will be required. Read the following carefully.
Note:  It is important that venting be installed using the 
most direct route and with as few elbows as possible. 
This ensures clear venting of exhaust and helps prevent 
blockages. Also, make sure dampers swing freely and 
nothing is blocking the ducts.
The hood exhaust has been designed to mate with a 
standard 3¼" x 10" (82 x 254 mm) rectangular duct. If a 
round duct is required, a rectangular-to-round transition 
adaptor must be used. Do not use less than a 6" 
(152 mm) diameter duct.
For satisfactory air movement, the total duct length of 
Duct Pieces
x
Number used
=
Equivalent Length
Rectangular-to-Round Tran-
sition Adaptor*
5 ft (1.5 m)
x
=
Wall Cap
40 ft (12.2 m)
x
=
90° Elbow
10 ft (3 m)
x
=
Total Ductwork =