Daikin-McQuay 049545007 Pressure Sensor

The Daikin-McQuay 049545007 Pressure Sensor is a critical OEM replacement static pressure sensor engineered for precise monitoring within Daikin HVAC equipment. Designed specifically for integration with the MicroTech II control system, this transducer replaces the legacy 049545005 model to maintain accurate airflow control and fan speed modulation. With a sensing range of 0-5" WC, it provides the high-resolution feedback necessary for managing static pressure in commercial air handlers and rooftop units. The sensor operates on a 12-24V DC input and delivers a calibrated 1-6V DC output, ensuring seamless HVAC pressure controller communication. This component is essential for technicians addressing Daikin pressure sensor troubleshooting or airflow imbalances. For legacy MicroTech I units, verify compatibility as those systems typically require part 090009001. Utilizing this genuine OEM part ensures the static pressure sensor 0-5" WC calibration aligns with factory sequences, protecting system efficiency and preventing unnecessary blower motor wear.

Technical Benefits for Contractors

• Direct OEM Replacement: Drop-in compatibility for the 049545005 pressure sensor, eliminating the need for mounting bracket modifications in MicroTech II cabinets.
• High-Precision Monitoring: The 0-5" WC range allows for granular control of duct static pressure, essential for VAV system stability.
• Rugged Electrical Interface: Standard 12-24V input and 1-6V output configuration provides a reliable signal for Daikin HVAC equipment controllers.
• System Efficiency: Accurate sensing prevents hunting in fan VFDs, reducing mechanical stress and optimizing energy consumption across the air loop.

Common Questions

What is the difference between this and the 090009001 sensor?
The 049545007 is designed for MicroTech II control systems. The 090009001 is the correct specification for older MicroTech I applications. Always check the controller generation before installation.

Can I use this for refrigerant pressure monitoring?
No, this is a static pressure sensor specifically calibrated for air-side measurements (0-5" WC). It is not rated for high-pressure refrigerant loops.

What causes a "Static Pressure Sensor Failure" alarm on Daikin units?
Common issues include clogged sensing tubes, incorrect voltage supply, or a drifted 1-6V signal. If the controller isn't receiving the correct HVAC pressure sensor feedback, the system may default to a fixed fan speed or trip a safety lockout.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.