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Rooftop Control

A rooftop unit (RTU) is a system that has all the necessary equipment to transfer heating, cooling and ventilation into a building through ductwork. It is the ultimate unit to provide comfort and optimize indoor conditions for occupant health and comfort, and business activities.

The control section of a rooftop unit may consist of two cooling stages, two heating stages and a fan activation terminal. With this is mind, Neptronic has designed the TRT2422, a precise temperature controller that can be directly wired to the rooftop unit. It includes a programmable proportional-integral (PI) algorithm and a 7-day scheduler.

Projects that need remote control from a direct digital control (DDC) or automation software are better implemented with one of Neptronic’s two universal controllers. The TUUB or TUCB series are models specifically for straightforward and precise control of rooftop units. They include BACnet and Modbus as standard communication protocols.

Benefits of our rooftop controllers:

  • Include two heat, two cool and one fan output
  • Offer humidity and CO2 control loops in selected models
  • Have a configurable scheduler
  • Include internal/external temperature sensor
  • Offer anti-cycling protection
  • Available for BACnet MS/TP and Modbus

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