Warrick 26MB1A0F Control

The Warrick 26MB1A0F Control is a professional-grade liquid level control engineered for low-water cutoff (LWCO) protection in industrial boiler and HVACR systems. Operating on a 120V AC supply voltage, this unit features a 10K ohm sensitivity range, making it ideal for standard water-based applications where precise conductivity sensing is required. The solid-state liquid level control is designed as an open circuit board for plug-in installation via an 11-pin octal socket, ensuring quick field replacement and minimal downtime for the contractor.

This Warrick 26M Series module utilizes direct acting logic with an integrated manual reset feature. To prevent nuisance tripping from surface turbulence, it includes a standard three-second time delay on decreasing levels. The SPDT powered contacts are rated for 10A resistive loads at 120/240VAC, providing reliable switching for burner circuits or alarm systems. This control meets CSD1 requirements for boiler safety, offering high-performance management of liquid levels in critical environments.

• CSD1 Compliance: Specifically designed to meet rigorous safety standards for boiler low-water cutoff applications.
• Rugged Solid-State Design: No moving parts in the sensing circuit ensures long-term reliability and repeatable accuracy.
• Manual Reset Feature: Enhances system safety by requiring technician intervention after a low-water event is detected.
• Standard 11-Pin Octal Base: Simplifies installation and allows for seamless integration into existing control panels.
• Wide Operating Temperature: Reliable performance in ambient conditions ranging from -40°F to 150°F.

Is the Warrick 26MB1A0F compatible with high-resistance liquids?
This model is factory-set to 10,000 ohms sensitivity. It is ideal for tap water and standard boiler water. For deionized water or other low-conductivity fluids, a higher sensitivity module (such as 26 or 50K) may be required.

What is the difference between direct and inverse acting on this module?
The 26MB1A0F is direct acting, meaning the relay energizes when the liquid reaches the probe. In LWCO applications, this ensures the burner circuit remains active only when sufficient water level is detected.

Can I use this control for pump-up or pump-down applications?
While primarily used for low-water cutoff, the SPDT contacts allow for flexible wiring. However, for multi-level pump control, a Series 16 or a dual-probe Series 26 configuration is often preferred to establish a differential level.

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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.