Automation Components Inc (ACI) FS-6 Freeze Stat

The Automation Components Inc (ACI) FS-6 Freeze Stat is a high-performance low limit controller engineered for precision freeze protection within commercial HVACR systems. This 6 foot capillary thermostat utilizes a vapor-filled sensing element to detect the lowest temperature across any one-foot section, providing a critical failsafe for heating and cooling coils. Equipped with 2-SPDT (Double Pole Double Throw) contacts, the FS-6 allows for simultaneous system shutdown and alarm signaling, ensuring immediate response to potential freezing conditions. As a manual reset freeze stat, it requires technician intervention after a trip, facilitating a necessary system check to identify the root cause of the temperature drop. The adjustable setpoint range of 14° to 54°F and its robust NEMA 1 enclosure make it a versatile HVAC low limit switch for protecting equipment against thermal stratification and airborne temperature drops.

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Conversational Queries:

• How do I install a 6-foot ACI freeze stat on a cooling coil?
• What is the difference between manual and automatic reset freeze stats?
• Why is my ACI FS-6 low limit switch tripping in the winter?

• Dual-Circuit Protection: Features 2-SPDT contacts for independent control of equipment shutdown and remote alarm notification.
• Reliable Sensing: The 6-foot vapor-charged copper capillary responds to the coldest point along its length for comprehensive coverage.
• Enhanced Safety: The manual reset design prevents automatic system restarts, ensuring a technician inspects the unit after a freeze event.
• Field Adjustable: Easily configure the trip point between 14°F and 54°F to meet specific environmental requirements.
• Industrial Durability: Housed in a NEMA 1 rated enclosure with a wide operating humidity range of 0 to 95% non-condensing.

• Can this unit be mounted in any orientation? Yes, the ACI FS-6 can be duct-mounted or installed across coils, but the capillary must be positioned where it can sense the coldest air first.
• What does the 2-SPDT output allow me to do? It allows you to break the circuit to the fan or compressor while simultaneously closing a circuit to a building management system (BMS) or local strobe.
• Is the sensing element flexible? Yes, the copper capillary is designed to be snaked across the face of a coil to monitor for temperature stratification.

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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