Bosch HMV8052U Installation Instruction

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1.
Lift the microwave, tilt it forward, and hook slots at 
back bottom edge onto four lower tabs of the 
mounting plate.
2.
Rotate the front of the oven up against cabinet bottom.
3.
Insert a self-aligning screw (item A) through top center 
cabinet hole. Temporarily secure the oven by turning 
the screw at least two full turns after the threads have 
engaged.
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 
3¼" x 10" (82 x 254 mm) rectangular or 6" (152 mm) 
diameter round should not exceed 120 equivalent feet 
(36.5 m).
Elbows, transitions, wall and roof caps etc. cause 
additional resistance to airflow and are equivalent to a 
section of straight duct which is longer than their actual 
physical size. When calculating the total duct length, add 
the equivalent lengths of all transitions and adaptors plus 
the length of all straight duct sections. The chart below 
shows you how to calculate total equivalent ductwork 
length using the approximate feet of equivalent length of 
some typical ducts: