Antunes Controls 8563140061 Control

The Antunes Controls 8563140061 is a commercial-grade digital freezestat designed for precise low-temperature protection in air make-up systems and AHUs. Engineered to prevent coil ruptures, this 115Vac digital control monitors discharge air and triggers a SPDT relay to shut down the blower if temps drop below your specific adjustable setpoint. Featuring a 30-75 degrees F operating range and an integrated 20-foot thermistor sensor, it provides superior accuracy over traditional capillary-style stats. The 1-10 minute adjustable timing prevents nuisance tripping during initial start-up or transient air stratification, ensuring the system only latches when a genuine freeze condition exists. This unit comes with a protective front cover and open-board construction for easy mounting in control cabinets. For technicians managing variable outdoor air loads, this HVAC freeze protection switch is a reliable safeguard for hydronic and steam coils.

• Precise Digital Sensing: Eliminates the drift and calibration issues common with mechanical low-limit controls.
• Extended 20-Foot Probe: High-quality 10K thermistor allows for comprehensive coil face coverage or remote duct placement.
• SPDT Output: Versatile Single-Pole Double-Throw switching for interlocking with dampers, fans, and BMS alarms.
• Adjustable Time Delay: Field-selectable 1-10 minute delay filters out "nuisance trips" caused by temporary air bypass.
• Commercial Reliability: Rated for 115V operation and housed with a durable front cover for industrial environments.

How do I reset the control after a trip?
The Antunes 8563140061 requires a manual power reset. Once the unit latches the relay due to a low-temperature event, you must cycle the 115Vac input power to clear the alarm and restart the timing sequence.

Can the sensor probe be shortened?
No. The 20-foot thermistor is a factory-calibrated component. Cutting or splicing the lead can alter the resistance and lead to inaccurate temperature readings or system failure.

What is the best setpoint for preventing coil freeze-up?
Most technicians set the digital freezestat between 35°F and 38°F. Setting it too close to the freezing mark (32°F) may not provide enough lead time to stop the fan before ice forms in the copper headers.

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.

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