Taco LTA1203S-2 LWCO

The Taco LTA1203S-2 is a high-performance, microprocessor-based low water cut-off (LWCO) designed specifically for hot water boiler applications. Operating at 120V, this electronic probe-style control ensures dry-fire protection by monitoring water levels with patented adjustable probe sensitivity. This advanced signal processing allows the unit to function reliably even in systems with high fouling or probe maintenance challenges, supporting probe impedance up to 40k Ohms without requiring frequent cleaning.

For contractors, the LTA1203S-2 simplifies field diagnostics with its external test button and clear LED status indicators (Green for normal, Red for low water). The unit features an automatic reset mechanism, restoring the burner circuit immediately once water levels return to safe operating parameters. Designed for robust mechanical environments, it features a 3/4" NPT threaded probe and a NEMA 1 enclosure, rated for system pressures up to 250 PSI and fluid temperatures up to 250°F. This boiler safety control is a direct solution for maintaining hydronic system integrity and meeting CSD-1 code requirements.

• Automatic Reset Functionality: Restores system power automatically once safe water levels are detected, reducing unnecessary service calls.
• Advanced Microprocessor Technology: Precisely identifies fluid levels and ignores false signals caused by system turbulence or scale buildup.
• Simplified Field Testing: Integrated external test button allows for rapid verification of the safety circuit during routine maintenance.
• High-Pressure Tolerance: Engineered for reliability in hydronic heating systems with ratings up to 250 PSI.
• Universal Boiler Compatibility: Works as a primary or secondary limit control for a wide range of residential and light commercial boilder models.

• Can I install this on a steam boiler? While the LTA1203S-2 is primarily optimized for hot water systems, it can serve as a primary or secondary cut-off in low-pressure steam applications up to 15 PSI.
• Does this unit support remote probe mounting? This specific model is an on-board configuration with a NEMA 1 enclosure; for remote NEMA 4 requirements, alternative Taco LT series models should be selected.
• What does a blinking red LED mean? A flashing light typically indicates a probe fouling condition or a level just above the cut-off threshold, signaling that the 3/4" probe may require inspection or the system needs a water top-off.

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.