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ROC827 Instruction Manual
Issued Mar-06 Installation and Use 2-2
ground conditions, climate, and accessibility), this document only
provides generalized guidelines.
2.1.1 Environmental Requirements
Always install the ROC827 in a user-supplied enclosure, as the ROC827
requires protection from direct exposure to rain, snow, ice, blowing dust or
debris, and corrosive atmospheres. If you install the ROC827 outside a
building, it must be placed in a National Electrical Manufacturer’s
Association (NEMA) 3 or higher rated enclosure to ensure the necessary
level of protection.
Note: In salt spray environments, it is especially important to ensure that
the enclosure—including all entry and exit points—is sealed properly.
The ROC827 operates over a wide range of temperatures. However, in
extreme climates it may be necessary to provide temperature-controlling
devices to maintain stable operating conditions. In extremely hot climates,
a filtered ventilation system or air conditioning may be required. In
extremely cold climates, it may be necessary to provide a thermostatically
controlled heater in the same enclosure as the ROC827. To maintain a
non-condensing atmosphere inside the ROC827 enclosure in areas of high
humidity, it may be necessary to add heat or dehumidification.
2.1.2 Site Requirements
When locating the ROC827 on the site, careful consideration can help
reduce future operational problems. Consider the following items when
choosing a location:
Local, state, and federal codes often place restrictions on locations and
dictate site requirements. Examples of these restrictions are fall
distance from a meter run, distance from pipe flanges, and hazardous
area classifications. Ensure that all code requirements are met.
Choose a location for the ROC827 to minimize the length of signal
and power wiring.
Locate ROC827s equipped for radio communications so the antenna
has an unobstructed signal path. Antennas should not be aimed into
storage tanks, buildings, or other tall structures. If possible, antennas
should be located at the highest point on the site. Overhead clearance
should be sufficient to allow the antenna to be raised to a height of at
least twenty feet.
To minimize interference with radio communications, choose a
location for the ROC827 away from electrical noise sources, such as
engines, large electric motors, and utility line transformers.