Warrick DFL1A0Z040406 Control

The Warrick DFL1A0Z040406 is a rugged, dual function control engineered for critical low water cutoff (LWCO) and differential level signaling. Designed as a solid-state solution with no moving parts, this board effectively eliminates the mechanical failures common in float-based systems. It features an integrated manual reset and a 3-second time delay on decreasing levels, specifically tuned to prevent nuisance tripping caused by turbulent liquid surfaces or momentary "surge" conditions in steam boilers and hydronic systems. The unit operates on a 120 VAC supply and utilizes secondary 12 VAC sensing voltage to minimize electrode electrolysis.

This conductivity-based liquid level control serves two independent functions: a single-level limit control (LLCO) and a differential-level pump control. The DFL1A0Z040406 is frequently deployed as a boiler water level control for high-pressure applications, meeting CSD-1 requirements. For field technicians, the open board control layout with spade terminal connections ensures a streamlined installation on standard 1/16-inch panel standoffs. Its reliability in high-cycle environments makes it a standard choice for industrial secondary limit protection and precise automation in commercial foodservice or chemical delivery equipment.

• Dual-Function Capability: Manages both a safety low-water cutoff and an automated differential level (pump up/down) function from a single board.
• Enhanced System Reliability: Features a standard 3-second time delay on decreasing levels to avoid unnecessary system shutdowns during water surges.
• CSD-1 Compliance: The integrated manual reset functionality ensures the lockout of heating circuits until an operator confirms safe operating levels.
• Streamlined Maintenance: The spade terminal design and open board control architecture allow for rapid diagnostic testing and module replacement.

• How do I test the LLCO circuit without draining the boiler? Hold the manual reset button for 3 seconds; this simulates a dry probe condition to verify the relay trips correctly. Pressing it again restores normal operation.
• Does this control support long-distance probe wiring? Performance depends on liquid conductivity and wire gauge. Using #14 or #16 AWG MTW/THHN wire is recommended to maintain sensing integrity over longer distances.
• Can I use this for non-water applications? This unit is built for conductive liquids. If the medium is non-conductive (like oil or hydrocarbons), a float-based switch should be interfaced with the board instead of direct probes.

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.