Instruction manual

Overview
2-2
Installation, SPM, Maintenance, and Troubleshooting Supplement
Environment 2
The control unit must be installed on a backboard. The placement of the
backboard, and the control unit on it, requires careful consideration. Make sure
you install the backboard in an area that meets all of the environmental
requirements listed in Table 2-1.
Table 2-1. Environmental Requirements
Parameter Value
Operating
Temperatures
40
ο
–104
ο
F (4
ο
–40
ο
C)
Optimal temperature: 60
ο
F (15.6
ο
C)
Humidity 20%–80%
Airborne
Contamination
Do not expose the control unit to moisture, corrosive
gases, dust, chemicals, spray paint, or similar
material.
Ventilation Allow at least 1 inch (2.54 cm) on the right and left
sides of the control unit and at least 12 inches
(30.48 cm) above and below it to prevent overheating.
Do not place the control unit near extreme heat
sources (for example: furnaces, heaters, attics, or
direct sunlight).
Electrical Fields Do not expose the control unit to devices that
generate electrical currents causing interference (such
as arc welders or motors).
Heat Dissipation Basic carrier: 500 BTU/hr
Basic carrier: with one expansion carrier, 1000 BTU/hr
Basic carrier: with two expansion carriers,
1500 BTU/hr