Description
The ACI 142963 FreezeStat is a professional-grade freeze protection thermostat engineered to safeguard HVAC air handling units and duct systems from damaging low-temperature conditions. With a generous 50-foot capillary tube, this control can be routed across wide coil faces and duct sections to sense the coldest point in the airstream — providing comprehensive, accurate freeze detection across the entire coil or duct area.
Key Features
- 50-foot capillary tube for broad-area freeze sensing across large coils and duct sections
- Manual reset (M/R) action — requires deliberate operator intervention after a freeze event, preventing automatic restart until the cause is identified and resolved
- Dual SPDT (2 Single Pole Double Throw) switching — enables simultaneous control of multiple circuits such as shutting down the air handler and triggering an alarm or valve
- Responds to the lowest temperature point along the entire capillary length, not just a single spot
- Designed for installation in air handling units, fan coil units, and commercial duct systems
- Rugged construction suitable for demanding commercial and industrial HVAC applications
Application
The ACI 142963 is ideal for protecting heating coils, chilled water coils, and heat exchangers in air handling units from freeze damage. When any point along the 50-foot capillary senses a temperature at or below the setpoint, the manual reset contacts trip — shutting down the fan, closing dampers, or activating alarms as wired. The manual reset feature ensures that a technician must physically inspect and reset the control before the system can resume operation, adding an important layer of protection against repeat freeze events.
Product Specifications
- SKU: 142963
- Brand: ACI (Automation Components Inc)
- Capillary Length: 50 feet
- Reset Type: Manual Reset (M/R)
- Switch Configuration: 2 SPDT (Dual Single Pole Double Throw)
- Product Type: FreezeStat / Freeze Protection Thermostat
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