Raypak 008520F Limit Switch

The Raypak 008520F is a critical safety component designed for professional-grade commercial boilers and pool heaters. This 240°F Limit Switch acts as a primary fail-safe, monitoring discharge water or heat exchanger temperatures to prevent thermal runaway. As a Manual Reset Limit Switch (M/R), it requires a technician to physically inspect the system and reset the device after a high-limit event, ensuring that the root cause of the overheating—such as scale buildup or low flow—is addressed before operation resumes. This OEM replacement part is engineered for precision, featuring a carbon monoxide modulating/reset (CO M/R) configuration that maintains system integrity under high-demand cycles. Integrating this genuine Raypak heating part ensures compatibility with factory specifications, preventing the nuisance tripping or delayed response times often associated with universal aftermarket alternatives. For contractors, the 008520F high limit provides a direct-fit solution for maintaining legal compliance and equipment longevity in hydronic and water heating applications.

• Precise 240°F fixed temperature cut-off prevents catastrophic heat exchanger damage.
• Manual reset mechanism ensures mandatory system inspection after any high-limit trip.
• Genuine OEM part provides exact fitment and terminal alignment for faster field replacement.
• Robust CO M/R construction is designed to handle the corrosive environments of commercial boiler rooms.
• Compatible with a wide range of Raypak water heaters and hydronic heating systems.

• How do I know if my 008520F limit switch has tripped? If the heater refuses to fire despite a call for heat, check the manual reset button. If it clicks back into place, the system exceeded the 240°F safety threshold.
• Can I bypass this limit switch for testing? Bypassing safety limits is never recommended. If the switch is open, verify actual water temperature and flow rates before assuming the part is defective.
• Is terminal polarity important during installation? No, this is a standard break-on-rise safety switch, but ensure all HVAC controls and wiring connections are secure to avoid resistance-induced heat.

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.