Mitsubishi Thermostat Adapter Interface - BACnet and Modbus Interface

The PAC-US444CN-1 thermostat interface allows the use of a third-party thermostat to control Mitsubishi Electric indoor units. It offers 3 input terminals for fan speed control: Auto, Medium, High, and custom auto. Through its CN105 connector, the Thermostat Interface enables HVAC thermostats and input/output controllers to manage residential or commercial indoor units. Any system controlled by the MHK1 controller model can now be controlled by a third-party HVAC thermostat or input/output controller.

The PAC-US444CN-1 is compatible with almost all current indoor units offered by Mitsubishi Electric US, including CITY-MULTI (Models after April 2012), M-Series, and P-Series Indoor Units. Please note that it is not compatible with M-Net & MA Control, and a 12VDC power supply is required for MAC-33IF. Line Voltage Thermostats are not compatible with this interface.

You can connect only one third-party thermostat to one thermostat interface to control a single indoor unit, even for an MXZ multi-zone system. The PAC-US444CN-1 is compatible with the PAC-SE41TS Remote Temperature sensor and MAC-331F, but it does not support M-Net & MA Control.

The supported thermostats include Nest, Honeywell, Lyric, and INNCOM (with fan speed control). Please keep in mind that only one Thermostat Interface is needed per indoor unit. The minimum required terminals are R, C, G, W1, and Y1, while the preferred terminals are R, C, G, W1, W2, Y1, and Y2.

In summary, the PAC-US444CN-1 allows for the use of third-party thermostats to control Mitsubishi Electric indoor units, providing enhanced features and benefits for the users.

product information: