The Warrick 26B1A0 is a heavy-duty, conductivity-based liquid level control designed specifically for boiler low-water cutoff (LWCO) protection and industrial level monitoring. This open-board level control operates on a 120VAC supply and features a fixed 10K Ohm sensitivity, making it ideal for high-conductivity fluids like city water. Built for reliability in demanding environments, the module utilizes a solid-state design with a standard 3-second time delay on decreasing levels to prevent nuisance tripping caused by surface turbulence or boiler surging. Engineered for seamless integration, the 26B1A0 mounts via a 1/16" panel standoff and hardware, allowing for compact installation within existing control cabinets. The SPDT dry contacts (1 Form C) are rated at 10A resistive at 120/240VAC, providing versatile switching for burners, alarms, or feed pumps. Compliance-driven technicians will appreciate that this unit meets CSD1 requirements and carries UL 353 limit control recognition, ensuring the safety and regulatory standards found in high-pressure steam and hot water heating applications are fully maintained. Key Benefits for HVACR Contractors: Precise Conductivity Sensing: The 10K Ohm sensitivity is factory-calibrated for high-conductivity liquids, ensuring accurate detection without false triggers from steam or foam. Robust Switching Power: Equipped with SPDT dry contacts rated at 10A, capable of handling 1/3 HP motor loads at 120/240VAC. Anti-Short Cycle Protection: A built-in 3-second delay on falling levels stabilizes the system during turbulent "boiling" conditions. UL 353 Certified: Recognized as a high-limit safety control, essential for professional boiler room code compliance. Broad Operating Range: Sustains reliable performance in ambient temperatures ranging from -40°F to +150°F. Common Questions & Technical Support: What is the maximum distance for probe wiring? Using standard 14 or 16 AWG MTW/THHN wire, the 10K Ohm sensitivity allows for a maximum probe-to-control distance of approximately 600 feet, depending on the specific resistance of the liquid and wiring environment. Can this unit replace a Series 1 control? Yes, the Series 26 is the primary replacement for the obsolete Series 1 modules. However, ensure you use the appropriate retrofit standoff plates if the original mounting footprint differs. Does the 26B1A0 require a manual reset? This specific model is configured for direct operation. While it supports the power outage feature for auto-recovery, manual reset functionality typically requires the addition of an external pushbutton across the reset terminals if "lockout" behavior is mandatory for your LWCO application. This item is not eligible for free shipping. 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.
