Daikin-McQuay 330419602 Sensor

The Daikin-McQuay 330419602 is a professional-grade water temperature sensor designed for accurate thermal monitoring in high-demand HVACR environments. This 3K-MR thermistor sensor is engineered as a critical component for evaporator entering water temperature detection, allowing the control board to modulate flow rates and manage system staging with high precision. Featuring a 20-foot lead, this sensor provides superior installation flexibility for large-scale chillers and air handling units, ensuring the probe can be positioned at the ideal sensing point without signal degradation.

Built for long-term reliability, the 330419602 HVAC sensor replaces legacy part numbers including T2392-10, T2392-20, and 073012002. As a Daikin Applied OEM part, it maintains a tight resistance-to-temperature curve essential for preventing evaporator freeze-up and optimizing energy consumption. For technicians performing field replacements, it is vital to maintain the integrity of the 20' factory-calibrated lead; cutting the cable to a shorter length will alter the resistance value and lead to inaccurate controller feedback. This sensor is compatible with a wide range of McQuay chillers and integrated building automation systems requiring a standard 3K ohm resistance at 77°F (25°C).

• Enhanced Accuracy: The 3K-MR thermistor technology provides precise evaporator temperature monitoring to prevent system cycling errors.
• Extended Reach: The 20-foot lead length allows for versatile routing through conduit and cabinetry to reach remote sensing wells.
• Broad Compatibility: Direct OEM replacement for multiple discontinued McQuay and Daikin sensor models, ensuring a perfect match for existing control logic.
• Industrial Durability: Rugged lead insulation jacket protects against moisture and mechanical wear in mechanical room environments.

What is the resistance value of the Daikin-McQuay 330419602?
This is a 3K-MR thermistor, typically calibrated to 3,000 ohms of resistance at a reference temperature of 75°F to 77°F.

Can I cut the 20-foot lead shorter during installation?
No. Cutting the cable changes the total loop resistance which can skew the temperature readings. Excess cable should be neatly coiled and secured away from high-voltage lines.

Where is this sensor typically installed?
It is most commonly used as an entering water sensor for evaporators in Daikin/McQuay chiller systems to monitor liquid temperatures for thermal load calculations.

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.