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Installation
The MI254 needs to be placed upright on its four feet.
It also can be custom installed. Remove the four feet
when it is custom installed and retain them with the
fastening screws for possible future use. The required
panel cutout, ventilation cutout and unit dimensions
are shown in the drawing on the right side of this
page.
It is necessary to provide adequate ventilation for
cool operation, ensuring long life for the MI254. Do
not install the MI254 above heat generating compo-
nents. When the MI254 is installed in a cabinet with
other components, use a ventilation fan to provide cool
operating temperature.
A custom cabinet installation needs to provide the
following minimum spacing for cool operation:
Allow at least 3 inches (7.6cm) above the top,
2 inches (5.08cm) below the bottom, 3 inches
(7.62cm) behind the rear panel and 2 inches
(5.08cm) on each side of the MI254, providing
airflow. Allow 2-1/2 inches (6.35 cm) in front of the
mounting
panel for clearance. Be sure to cut out a
1
ventilation hole in the mounting shelf according to
the dimensions in the drawing.
When the MI254 is installed together with other
1
McIntosh Components, check clearances on all
components before proceeding.
Installation of Side Rack Mount Brackets
When desired, to install MI254 Side Rack Mounting
Brackets, follow the steps below for one side at a time:
1. Refer to figure A to remove the two side screws and
save them for possible future use.
2. Position the Side Rack Mounting Bracket as illustrated
in figure B. Then attach the Bracket to the Front and
Side Panel of the MI254, using the screws supplied
with the Bracket.
3. Perform steps 1 and 2 to mount the second Bracket to
the other side of the MI254.
MI254 Front Panel
Custom Cabinet Cutout
Cabinet
Front
Panel
Opening
for Ventilation
MI254 Side View
in Custom Cabinet
Support
Shelf
29/32
2.4cm
MI254 Bottom View
in Custom Cabinet
Note: Center the cutout Horizontally
on the unit. For purposes of
clarity, the above illustration
is not drawn to scale.
3"
7.6cm
Front Panel
Side Panel
Remove two
Screws from
the Chassis
Sidewall
and save
them
Figure A
16-
"
7/8
42.8cm
Cutout Opening for Custom Mounting
3"
7.6cm
Cutout Opening for Ventilation
"
25/32
2.0cm
10-
"
9/16
"
26.9cm
14-
7/16
Cutout Opening
36.2cm
for Ventilation
11-
"
19/32
29.7cm
Side Rack
Mounting
Bracket
Supplied
Screws
Installation
3-
"
1/4
8.2cm
Chassis
Spacers
15"
"
38.1cm
Front Panel
Side Panel
Supplied
Screws
Figure B
5
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