Raypak ASME B-R406A-EN-X #52 399k BTU Natural Gas Cupronickel Pool Heater

Raypak B-R406A-EN-X #52 399,000 BTU Natural Gas Cupronickel Heater

The Raypak B-R406A-EN-X #52 is a 399,000 BTU natural gas pool and spa heater engineered for maximum heating performance in high elevation residential and commercial applications. Designed for large pools and spas, this model delivers rapid heat-up and consistent temperature control using a cupronickel fin tube heat exchanger.

As part of Raypak’s Professional Series, this heater features a durable cabinet and heavy-duty internal components built for long-term outdoor use. The cupronickel construction provides enhanced resistance to corrosion and chemical wear, making it ideal for saltwater and demanding pool environments.

High Elevation Heating with Maximum Output and Durability

The #52 configuration is designed for elevations between approximately 6,000 and 8,999 feet, ensuring proper combustion and efficient performance. The digital control panel allows for precise temperature adjustment, while the electronic ignition system ensures reliable startup without a standing pilot.

The cupronickel heat exchanger extends the lifespan of the heater by protecting against corrosion and erosion, delivering dependable performance in aggressive water conditions.

Key Features

• 399,000 BTU heating capacity for large pools and spas
• #52 configuration for high elevation operation
• Natural gas powered heater
• Cupronickel heat exchanger for enhanced corrosion resistance
• Professional Series construction for durability
• Digital control panel with microprocessor thermostat
• Electronic ignition system with no standing pilot
• Approximately 82% thermal efficiency
• Durable cabinet for outdoor installation
• Ideal for saltwater and high-demand pool systems

About the Raypak ASME Series

Raypak ASME Series pool heaters are engineered for commercial-grade performance and long-term reliability in high-demand pool and spa applications. Constructed in accordance with ASME standards, these heaters feature heavier-duty components and thicker heat exchangers designed to withstand continuous operation and higher system pressures. Available in both copper and cupronickel configurations, the ASME Series offers flexibility for standard and saltwater pool environments, with cupronickel models providing enhanced resistance to corrosion and chemical wear. The natural gas configuration delivers consistent, cost-effective heating, while Raypak’s proven atmospheric burner design ensures stable outdoor performance. With precise digital controls, electronic ignition, and fast heat-up capability, the ASME Series provides dependable, high-output heating for commercial and large residential pool systems across a range of elevations.