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Typical Wiring Diagram
Following is an example of a typical wiring diagram located in the unit control center. This wiring diagram
includes a legend highlighting which accessories were provided with the unit. Factory wiring and field wiring
are also indicated. This particular example includes 1) variable frequency drives on the blowers requiring a
modulating input, 2) modulating energy recovery wheel with factory controls for economizer, 3) energy wheel
rotation sensor, 4) outdoor air and exhaust air dirty filter switches, 5) motorized outdoor air and exhaust air
intake dampers, and 6) timed exhaust frost control. Many other factory installed and wired accessories are
available.
20
Model RT Energy Recovery Unit
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