Warrick 16DMM1B0 LWCO

The Warrick 16DMM1B0 LWCO is a heavy-duty, conductive liquid level control engineered for high-sensitivity applications in steam boilers and water storage tanks. Operating on the conductivity probe principle, this Series 16D module provides precise Low Water Cut-Off (LWCO) protection to prevent dry-fire conditions. This specific model features a 120 VAC primary voltage and a 10K Ohm sensitivity setting, tailored for liquids with moderate mineral content. The Warrick 16DMM1B0 is designed with dual contacts (DPDT), allowing for simultaneous control of burner circuits and secondary diagnostic alarms or feed pumps. Its modular plug-in design ensures rapid field replacement and simplifies wiring within NEMA-rated enclosures. As a solid-state level control, it eliminates the mechanical failure points common in float-style switches, providing superior reliability in high-temperature and high-pressure HVACR environments.

• Dual Contact Configuration: The DPDT relay output provides versatile switching logic for both safety shutdowns and auxiliary signaling.
• Direct Manual Reset: Integrated manual reset functionality ensures the system remains locked out after a low-water event until a technician verifies the water level.
• 10K Ohm Sensitivity: Specifically calibrated for standard tap water and steam condensate, reducing false trips from foaming or turbulence.
• Solid-State Reliability: No moving parts inside the tank prevents probe Fouling issues often found in mechanical level sensors.
• DIN-Rail or Surface Mount: The compact housing fits standard 11-pin sockets for easy integration into existing control panels.

What is the difference between the 16D and 16M series?
The Series 16D, such as the Warrick 16DMM1B0, includes a manual reset feature required by many local codes for low water cut-off safety applications, whereas the 16M series typically resets automatically.

Does this module require a specific probe?
Yes, this controller must be paired with Warrick 3R or 3W probe fittings and appropriate electrodes. Ensure the probe length is cut to the exact "cut-off" elevation required for the specific vessel.

How do I troubleshoot a 'chattering' relay?
Relay chattering is usually caused by probe turbulence or high-resistance scale buildup on the electrode. Ensure the 10K Ohm sensitivity matches your fluid conductivity and check for proper grounding of the common terminal.

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.