New microprocessor controls can now be specified on Greenheck energy core ventilator model ECV and energy recovery ventilator models ERV and ERVe. Each microprocessor is factory-programmed, wired and tested prior to shipment and includes a configurable code for field adjustments and stand-alone control.
The microprocessor unit features an LCD display, built-in keypad, seven-day time clock, BMS communication in BACnet MSTP or IP or Modbus RTU or IP, and built-in frost and economizer controls. Numerous supply and exhaust fan modulation sequences are possible when selected with Vari-Green electronically commutated (EC) motors or variable frequency drives (VFDs). A web user interface allows viewing of the unit and control directly from a web browser. With an Ethernet connection from the unit to the facilities network, a graphic display allows for monitoring and control of the unit without a BMS.