{"product_id":"raypak-asme-b-r406a-en-c-52-399k-btu-natural-gas-copper-pool-heater","title":"Raypak ASME B-R406A-EN-C #52 399k BTU Natural Gas Copper Pool Heater","description":"\u003ch2\u003e\u003cstrong\u003eRaypak B-R406A-EN-C #52 399,000 BTU Natural Gas Copper Heater\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Raypak B-R406A-EN-C #52 is a 399,000 BTU natural gas pool and spa heater engineered for high elevation performance between approximately 6,000 and 8,999 feet. Designed for large residential and commercial applications, this model delivers powerful and consistent heating in environments where standard heaters lose efficiency.\u003c\/p\u003e\n\u003cp\u003eBuilt within Raypak’s Professional Series, this heater features a copper fin tube heat exchanger and a corrosion-resistant cabinet designed for long-term durability and outdoor reliability.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHigh Elevation Heating with Maximum Output Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe #52 configuration ensures proper combustion and efficient operation at high elevations. The digital control panel allows for precise temperature management, while the electronic ignition system provides reliable startup without a standing pilot.\u003c\/p\u003e\n\u003cp\u003eThe copper heat exchanger offers excellent thermal conductivity and dependable performance in properly maintained pool systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e399,000 BTU heating capacity for large pools and spas\u003c\/li\u003e\n\u003cli\u003e#52 configuration for high elevation operation\u003c\/li\u003e\n\u003cli\u003eNatural gas powered heater\u003c\/li\u003e\n\u003cli\u003eCopper fin tube heat exchanger for efficient heating\u003c\/li\u003e\n\u003cli\u003eProfessional Series construction for durability\u003c\/li\u003e\n\u003cli\u003eDigital control panel with precise temperature adjustment\u003c\/li\u003e\n\u003cli\u003eElectronic ignition system with no standing pilot\u003c\/li\u003e\n\u003cli\u003eApproximately 82% thermal efficiency\u003c\/li\u003e\n\u003cli\u003eWind-resistant design for outdoor installations\u003c\/li\u003e\n\u003cli\u003eIdeal for high elevation pool systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eAbout the Raypak ASME Series\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRaypak 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.\u003c\/p\u003e","brand":"Raypak","offers":[{"title":"Default Title","offer_id":52229545591058,"sku":"017382","price":5002.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/DigitalGas_HDR_Raypak_facing_2025-middle_93016495-91d9-41fe-8e8e-3345c9ee036e.png?v=1777438480","url":"https:\/\/www.aquaterrabackyard.com\/products\/raypak-asme-b-r406a-en-c-52-399k-btu-natural-gas-copper-pool-heater","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}