Electronic Auto Reset Low Water Cut-Off, 120V

Taco LTA-2 Auto Reset Low Water Cut-Off – Advanced Boiler Safety Control

Engineered to safeguard hydronic systems, the Taco LTA-2 Electronic Low Water Cut-Off provides automatic protection for hot water boilers by shutting down equipment when water levels fall below safe operating thresholds. Designed for integration into both residential and light commercial systems, this device offers precise monitoring, enhanced safety, and minimal maintenance through a robust microprocessor-based platform.

Built for Dependability

With an automatic reset feature, the LTA-2 ensures your system resumes normal operation when water levels are restored—no manual reset required. Its high-sensitivity probe technology delivers reliable detection even in varying water conditions, while the NEMA 1-rated enclosure protects internal components in indoor mechanical rooms.

Product Highlights

• Automatic Reset Operation – Shuts off power during low water events and automatically restores function once safe conditions return.
• Microprocessor Control – Ensures accurate, consistent performance and greater reliability than traditional float mechanisms.
• Test Button – Integrated for field diagnostics and compliance testing during service checks.
• Wide Operating Parameters – Handles temperatures from 32°F to 150°F and system pressures up to 250 PSI.
• High Probe Sensitivity – Functions reliably with probe impedances up to 40 kOhms, minimizing nuisance shutoffs and probe cleaning frequency.

Technical Data

• Thread Size: 3/4" NPT
• Voltage: 120V AC
• Temperature Range: 32°F to 150°F
• Maximum Pressure: 250 PSI
• Probe Sensitivity: Standard 20 k? (operates up to 40 k?)
• Enclosure: NEMA 1 indoor-rated

Installation Notes

The LTA-2 should be installed by licensed plumbing or HVAC professionals. It requires proper electrical connections and grounding, as well as correct positioning of the sensing probe within the boiler or feed line. Follow Taco’s installation guidelines and local code requirements to ensure safe, compliant performance.

Contractor Insights

For Field Technicians: The Taco LTA-2 meets the safety requirements demanded on modern job sites. Its automatic reset minimizes callbacks, and the diagnostic test switch allows for fast system checks. Durable construction and reliable performance help reduce liability and extend boiler lifespan.

For Facility Managers: With LED status indicators and a fail-safe shutdown design, this unit simplifies system monitoring and protects mission-critical equipment in mechanical spaces or small boiler plants.

Application Advantages

• Consistent System Protection – Reduces risk of dry-firing and catastrophic boiler damage.
• Service Friendly – Built-in status indicators and test switch make system evaluation straightforward during maintenance.
• Universal Use – Effective on a wide range of boiler types and configurations in both new construction and retrofits.

Prioritize Boiler Safety with Taco

The Taco LTA-2 Low Water Cut-Off is an essential addition to any modern boiler installation. Its precision monitoring and automatic reset function provide long-term peace of mind while helping systems operate safely and efficiently. For professionals who demand performance and code compliance, Taco delivers.