Raypak ASME B-R336A-EN-C #51 332k BTU Natural Gas Copper Pool Heater

Raypak B-R336A-EN-C #51 332,000 BTU Natural Gas Copper Heater

The Raypak B-R336A-EN-C #51 is a 332,000 BTU natural gas pool and spa heater engineered for high-performance heating in moderate elevation environments. Designed for medium to large pools, this model delivers fast heat-up and consistent temperature control using a copper fin tube heat exchanger.

Part of Raypak’s Professional Series, this heater features a rugged cabinet and durable internal components built for long-term outdoor use. Its design ensures reliable operation across a wide range of residential and light commercial installations.

High Output Heating with Elevation Optimized Performance

The #51 configuration supports elevations between approximately 2,000 and 5,999 feet, ensuring efficient combustion and stable operation. The digital control panel allows for precise temperature management, while the electronic ignition system provides dependable startup.

The copper heat exchanger delivers excellent thermal efficiency, making this heater a strong choice for consistent, high-demand heating applications.

Key Features

• 332,000 BTU heating capacity for medium to large pools and spas
• #51 configuration for moderate elevation use
• Natural gas powered heater
• Copper fin tube heat exchanger for efficient performance
• Professional Series construction for durability
• Digital control panel with precise temperature adjustment
• Electronic ignition system with no standing pilot
• Approximately 82% thermal efficiency
• Wind-resistant outdoor cabinet design
• Ideal for larger 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.