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RTU-MP™ Rooftop Unit Controller
RTU-MP

The RTU-MP controller is low cost, intelligent HVAC control device that continuously monitors and regulates unit operation with reliability and precision that minimizes downtime to ensure maximum occupant comfort.

The RTU-MP controller is a customer designed, integrated rooftop unit controller that is factory programmed to communicate using 4 different protocols simply by changing the dip switch configuration on the control board. This flexibility allows unprecedented flexibility for installing contractors, controls contractors and building owners, to easily change Building Automation System protocols without having to install and re-configure a unit mounted control system.

The RTU-MP features and benefits include:

  • Designed from the ground up for factory installation in Carrier Rooftop Units
  • Built-in protocol support: BACnet MS/TP, Modbus (RTU), N2, and LonWorks†
  • Operation in 100% stand-alone control mode (using space temperature and/or humidity sensors), or it can communicate to the Building Automation System (BAS)
  • On-board DIP switches allow change of protocol and baud rate
  • Software upgrades can be downloaded locally - no chip replacements necessary
  • Built-in support for Carrier’s handheld service tool
  • Built-in surge transient protection circuitry
  • FCC Part 15 - Subpart B - Class A. UL, UL Canada listed

† LonWorks requires additional field installed, plug-and-play LonWorks Option Card (LON-OC)

RTU-MP Inputs RTU-MP Outputs
  • Space Temperature
  • Supply Air Temperature
  • Outdoor Air Temperature
  • Indoor Air Quality (CO2) / Relative Humidity
  • Outdoor Air Quality (CO2) / Relative Humidity
  • Compressor Safety
  • Fire shutdown
  • Enthalpy Status
  • Fan / Filter Status
  • Remote Occupancy
  • Humidistat
  • Indoor Fan control
  • Cooling Stages
  • Heating Stages
  • Economizer control
  • Power Exhaust control
  • Humidi-MiZer™ Dehumidification System control

Support DocumentsType
48/50HJ004-014, 50HJQ004-012, 48/50HE003-006, 50HEQ003-006, 48/50TM004-014 RTU-MP (Multi-Protocol) 2.x Controller BACnet, Modbus, Johnson N2, and LonWorks
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Controls, Start-Up, Operation, Troubleshooting

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