ACI 145354 FreezeStat 6′ Capillary Auto-Reset 2-Circuit Freeze Protection

The ACI 145354 FreezeStat is a professional-grade freeze protection control engineered for commercial and industrial HVAC applications where reliable low-temperature detection is critical. Featuring a 6-foot capillary sensing element, this unit monitors air temperature across a wide sensing area to detect potentially damaging freeze conditions before they cause equipment failure or coil damage.

Key Features

• 6-foot capillary tube for broad-area temperature sensing — ideal for air handling units and ductwork applications
• Auto-reset (A/R) operation automatically restores normal function once temperatures rise above the setpoint, minimizing downtime
• Dual 2-circuit output allows simultaneous control of multiple loads such as fans, valves, and dampers in a single freeze event
• Designed to protect coils, heat exchangers, and air handling equipment from freeze damage
• Rugged construction suitable for demanding commercial HVAC environments

Application

The ACI 145354 FreezeStat is commonly installed in air handling units (AHUs), rooftop units, and ventilation systems where outdoor or mixed-air temperatures can drop to dangerous levels. The 6-foot capillary averages temperature along its entire length, ensuring that even localized cold spots trigger a protective response. The auto-reset feature eliminates the need for manual intervention once conditions normalize, while the 2-circuit design provides the flexibility to shut down fans and simultaneously open or close valves or dampers.

Specifications

• Brand: ACI (Automation Components Inc)
• SKU: 145354
• Capillary Length: 6 feet
• Reset Type: Auto-Reset (A/R)
• Number of Circuits: 2
• Application: Freeze protection for HVAC air handling and ventilation systems