York 025-35787-010 LTC Sensor

The York 025-35787-010 LTC Sensor is a critical low temperature cutout sensor engineered to safeguard HVAC coils and hydronic systems from catastrophic freeze-up conditions. This SPST (Single Pole Single Throw) normally closed safety switch operates within a precise 35°F to 45°F temperature range, providing an essential line of defense for commercial air handlers and rooftop units. When the sensing element detects temperatures approaching the setpoint, the circuit interrupts system operation, effectively preventing ruptured tubes and costly refrigerant loss.

Built for demanding mechanical environments, this 025-35787-010 model features an extensive 40-foot capillary tube. This length allows technicians to serpentine the sensing element across large coil surfaces, ensuring comprehensive coverage even in the stratified air of oversized ductwork. As a Genuine OEM York part, it integrates seamlessly with existing control logic in York YPAL and SunPremier series equipment, maintaining the high-performance integrity of the original system design.

Key Benefits for HVAC Professionals

• Extensive 40' Capillary: Provides the necessary reach for total coil face monitoring in large commercial AHUs and RTUs.
• Fail-Safe Freeze Protection: Acts as a reliable freeze stat to shut down fans or open heating valves when ambient air drops below safety thresholds.
• Durable SPST Switch: Reliable mechanical snap-action contacts designed for high-cycle industrial application.
• Precise 10% to 90% RH Tolerance: Engineered to withstand the high-humidity conditions common in evaporator and cooling coil sections.
• Direct OEM Compatibility: Ensures exact fit and function without the need for field modifications or bracket fabrication.

Common Questions

Where is the best location to mount the 40-foot capillary?
The capillary should be mounted on the downstream side of the coil. For maximum protection, technicians should serpentine the element across the bottom 6 inches of the coil where the coldest air typically settles.

Is the 025-35787-010 an automatic or manual reset sensor?
This specific LTC sensor is designed for automatic recycling, meaning the SPST switch will reset itself once the sensed temperature rises approximately 12°F above the cutout setpoint.

Can this sensor be used in high-altitude installations?
Yes, however, for altitudes significantly above sea level, technicians should adjust the setpoint slightly higher (approximately 1°F for every 1800 ft of elevation) to compensate for atmospheric pressure changes on the vapor-charged element.

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.