Table 2-1. Environmental Requirements - AT&T MERLIN LEGEND Release 2.0 Installation Section

Installing the Control Unit

Table 2-1. Environmental Requirements

Operating
Temperatures
Humidity
Airborne
Contamination
Ventilation
Electrical
Fields
Heat
Dissipation
WARNING:
Do not install the control unit outdoors.
Electrical Noise/Radio-Frequency Interference (RFI)
In most cases, electrical noise is introduced to the system through trunk or
telephone cables. However, electromagnetic fields near the control unit may
also induce noise in the system. Therefore, the control unit and cable runs
should not be placed in areas where a high electromagnetic field strength
exists.
40° - 104°F (4° - 40°C)
Optimum temperature: 60°F (15.6°C)
2 0 % - 8 0 %
Do not expose the control unit to moisture, corrosive gases,
dust, chemicals, spray paint, or similar material.
Allow at least 1 inch (2.54 cm) on the right and left sides of
the control unit and 12 inches (31 cm) above and below to
prevent overheating.
Do not place the control unit near extreme heat (for
example: furnaces, heaters, attics, or direct sunlight).
Do not expose the control unit to devices that generate
electrical currents causing interference (such as arc
welders or motors).
Basic carrier: 500 BTU/hr
Basic carrier with one expansion carrier: 1000 BTU/hr
Basic carrier with two expansion carriers: 1500 BTU/hr
2-3
Preparation