Environmental Requirements; Positioning The Control Unit - AT&T MERLIN 410 Service Manual

Enviromental Requirements
The control has the following requirements:
1. Operating temperatures 40-104 degres Fahrenheit (4-40 degrees Centigrade).
2. Humidity (not to exceed 80 percent).
3. Dissipation of power (20 watts during normal operation).
4. Ventilation (a minimum of 1/2 inch of space is required on all sides; also keep away
from extreme heat such as furnaces, heaters, attics, and direct sunlight).
5. Exposure (avoid exposure to moisture, corrosive gasses, dust, chemicals, or other simi-
lar materials).
A. Positioning the Control Unit
Determine where the control unit is to be located. Its dimensions are 9-3/8 inches high, 14-
1/4 inches wide, and 9-7/8 inches deep. The control unit weighs 11 pounds.
1. If you choose a horizontal surface such as a shelf or cabinet, place the control unit in
the desired location.
If you choose to mount the unit on a wall, find the CS 100A Control Unit Wall Mount-
ing Kit in the shipment and follow the instructions packed with it.
2. If the installation includes an auxiliary power unit (335A Power Unit), find it in the
shipment. Install it following the instructions packed with it.
Note 1: A Model 206 system can have a maximum of six voice terminals. An auxiliary
power unit is required when the system has a total of nine or more voice ter-
minals and accessories (for example, five terminals and four hands-free units).
A Model 410 system can have a maximum of ten voice terminals. An auxiliary
Note 2:
power unit is required when Model 410 has a total of fifteen or more voice ter-
minals and accessories (for example, ten terminals and six hands-free units).
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