Raypak ASME B-R266A-EN-C #51 266k BTU Natural Gas Copper Pool Heater

Raypak B-R266A-EN-C #51 266,000 BTU Natural Gas Copper Heater

The Raypak B-R266A-EN-C #51 is a 266,000 BTU natural gas pool and spa heater designed for reliable performance at moderate elevations in residential and light commercial applications. Built with a copper fin tube heat exchanger, this model delivers efficient heat transfer and consistent temperature control for medium-sized pools and spas.

As part of Raypak’s Professional Series, this heater features durable construction and a corrosion-resistant cabinet designed for long-term outdoor use. Its compact footprint allows for flexible installation while maintaining dependable heating performance.

Moderate Elevation Heating with Professional Grade Reliability

The #51 configuration is engineered for elevations between approximately 2,000 and 5,999 feet, ensuring proper combustion and efficient operation. The digital control panel provides precise temperature adjustment, while the electronic ignition system ensures reliable startup without a standing pilot.

The copper heat exchanger provides strong thermal efficiency and dependable performance in properly balanced pool systems.

Key Features

• 266,000 BTU heating capacity for residential and light commercial pools
• #51 configuration for moderate elevation operation
• Natural gas powered heater
• Copper fin tube heat exchanger for efficient heating
• 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 medium-sized 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.