Burnham Boiler 104450-01 Aquastat Relay

The Burnham Boiler 104450-01 Aquastat Relay serves as the primary immersion controller for hydronic heating systems, regulating high-limit protection and circulator functionality. This critical component is engineered to maintain precise water temperatures and prevent boiler overheating by interrupting power to the burner if the high-limit set point is exceeded. As an OEM replacement part for Burnham hydronic boilers, it ensures seamless integration with existing terminal blocks and wiring harnesses. The 104450-01 model is often utilized in atmospheric gas boiler configurations and oil-fired heating systems, providing reliable aquastat relay troubleshooting and replacement solutions for field technicians. With its robust switching relay and high-limit controller logic, this part facilitates sequential firing and circulator operation based on thermostat demand. Integrating this component restores factory-spec boiler temperature control and system efficiency, ensuring the hydronic loop performs according to the original equipment manufacturer's thermal design parameters.

• OEM Compatibility: Exact drop-in replacement for specific Burnham residential and commercial boilers, ensuring correct electrical terminations.
• Dual-Function Logic: Manages both the high-limit safety cut-out and the circulator pump relay from a single control point.
• Thermal Accuracy: Precise sensing bulb technology minimizes temperature overshoot and improves system response times.
• Rugged Construction: Designed to withstand the high-temperature environment of an active mechanical room for long-term reliability.

Common Questions:

Does the 104450-01 include the immersion well?
This part is typically the relay control head; it is designed to mount onto an existing 1/2-inch or 3/4-inch immersion well. Verify the condition of your existing well before installation.

Can this aquastat handle 24V and 120V circuits?
Yes, this relay is designed to interface between the 24V thermostat control circuit and the 120V line voltage required for the burner and circulator pump.

What is the typical high-limit setting for this Burnham relay?
While adjustable, most hydronic systems are traditionally set at 180°F, but always refer to the specific boiler's manual for the manifold design temperature.

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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.