Hydrolevel 24 Low Water Cut-Off

The Hydrolevel 24 Low Water Cut-Off (Model 45-240) is a heavy-duty, probe-type safety control engineered specifically for hydronic heating professionals. Operating on 24 VAC, this electronic LWCO utilizes an EL1214 sensing probe to monitor water levels within hot water boilers. When a low-water condition occurs, the control immediately interrupts the burner circuit to prevent dry firing and heat exchanger damage. The automatic reset functionality ensures the system resumes operation as soon as safe water levels are restored, eliminating unnecessary service calls for manual resets.

Built with a rugged electro-mechanical design, the Hydrolevel 45-240 is a reliable alternative to float-style controls that are prone to mechanical sticking. This unit features SPDT switch contacts with a 50 VA switching capacity and includes auxiliary contacts for an optional low-water alarm. Designed for versatility, the EL1214 probe installs into a 3/4" NPT tapping, making it compatible with most residential and commercial boiler configurations. With a maximum pressure rating of 160 PSI and a maximum water temperature of 250?F, it provides robust protection in demanding high-pressure environments.

• Fail-Safe Protection: Instantly breaks the burner circuit during low-water events to prevent catastrophic boiler failure.
• Automatic System Recovery: Integrated automatic reset boiler control restarts the burner once the water level covers the probe.
• Maintenance-Free Design: No moving parts to wear out or hang up, ensuring long-term reliability over traditional float switches.
• Versatile Monitoring: Includes secondary contacts to easily integrate an external low water alarm for remote notification.
• Industry Standard Compatibility: Simplifies replacement of existing Safgard 24 low water cut-off units with standard wiring configurations.

What is the difference between the Model 24 and the 24SV?
The standard Model 24 (45-240) includes the standard EL1214 probe, while the "SV" version (45-245) features a shorter probe designed specifically for installation in a standard 3/4" black iron tee.

Does this unit require a specific orientation?
Yes, the control should be mounted so the probe is at or above the minimum safe water level specified by the boiler manufacturer. Ensure the probe is not insulated by excessive Teflon tape, as it requires a metal-to-metal ground for proper conductivity sensing.

Can I use this on a steam boiler?
The Hydrolevel 24 is primarily designed for hot water boilers. For steam applications, a control with a 15-second delay, such as the Safgard 400 or 450 series, is typically recommended to prevent short-cycling due to surging water levels.

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.