Raypak Digital P-R406A-EN-C #51 399k BTU Natural Gas Copper Pool Heater

Raypak P-R406A-EN-C #51 399,000 BTU Natural Gas Copper Heater

The Raypak P-R406A-EN-C #51 is a 399,000 BTU natural gas pool and spa heater designed for high-performance heating at elevated installations. Built for large residential pools and spas, this model delivers rapid heat-up and consistent temperature control using a copper fin tube heat exchanger that maximizes thermal efficiency and reliability.

As part of Raypak’s Digital Gas Heater series, this unit features a compact, low-profile cabinet designed for outdoor durability. The atmospheric burner system is tuned for high elevation performance, ensuring proper combustion and stable operation in environments where standard heaters may struggle.

High Elevation Heating with Maximum Output and Digital Precision

The #51 configuration is specifically engineered for higher elevation use, maintaining proper fuel-to-air ratios for efficient operation. The digital control panel provides precise temperature adjustment, while the electronic ignition system ensures consistent startups without a standing pilot.

Raypak’s Unitherm Governor helps regulate internal temperatures to reduce condensation and scale buildup, extending the life of the heat exchanger. Polymer headers resist corrosion from pool chemicals, making this unit a dependable long-term solution for demanding environments.

Key Features

• 399,000 BTU heating capacity for large residential pools and spas
• #51 burner designed for higher elevation operation
• Natural gas powered for strong heating performance
• Copper fin tube heat exchanger for efficient heat transfer
• Digital control panel with microprocessor thermostat
• Electronic ignition system with no standing pilot
• Unitherm Governor helps prevent condensation and scaling
• Polymer headers for corrosion resistance
• Wind-resistant atmospheric burner system
• Built for high-demand residential applications

About the Raypak Digital Series

Raypak Digital pool heaters are designed for reliable, efficient heating across a wide range of residential and light commercial pool applications, including installations at varying elevations. Built with copper fin tube heat exchangers and Raypak’s proven atmospheric burner design, these heaters deliver fast heat-up times and consistent water temperature in real-world outdoor conditions. Available in multiple elevation configurations, the Digital Series ensures proper combustion and performance whether installed at standard or higher altitudes. The microprocessor-controlled thermostat provides precise temperature management, while the electronic ignition system eliminates the need for a standing pilot, improving efficiency and ease of use. Known for their durability, serviceability, and dependable performance, Raypak Digital heaters are a trusted solution for maintaining comfortable pool temperatures season after season.