DISCLAIMER: WE STRIVE TO PROVIDE ACCURATE PRODUCT IMAGES AND SPECIFICATIONS. MANUFACTURERS MAY UPDATE PRODUCT APPEARANCE, FEATURES, OR SPECIFICATIONS WITHOUT NOTICE. IF YOU HAVE ANY QUESTIONS ABOUT COMPATIBILITY, PLEASE CONTACT US—WE'RE HAPPY TO HELP ENSURE YOU ORDER THE CORRECT PRODUCT.

Dimensions: 45" L × 34" W × 72" H
Heating Capacity: 399,000 BTU
Fuel Type: Natural Gas
Heat Exchanger: Cupro-Nickel Fin Tube
Header Material: Bronze (ASME)
Ignition Type: Digital Electronic Ignition
Elevation Rating: 0–2,000 Feet

The Raypak 017402 B-R406A-EN-X #50 ASME Digital Natural Gas Pool & Spa Heater is engineered for commercial and high-demand residential applications requiring exceptional durability, dependable heating performance, and ASME-certified construction. Featuring a 399,000 BTU input, a premium cupro-nickel fin tube heat exchanger, heavy-duty bronze headers, and digital electronic ignition, this heater delivers fast, efficient water heating while meeting stringent ASME standards for commercial installations. Designed for elevations from 0 to 2,000 feet above sea level, it is an ideal solution for hotels, apartment complexes, HOAs, aquatic facilities, fitness centers, municipalities, and demanding residential pool and spa systems.

Built with Raypak's rugged polyester-coated galvanized steel cabinet, the B-R406A-EN-X #50 is designed to withstand harsh outdoor environments while providing years of dependable service. The commercial-grade bronze headers provide exceptional corrosion resistance and long-term durability, while the premium cupro-nickel heat exchanger offers superior protection against erosion, aggressive water chemistry, and saltwater environments. Raypak's ProTek Shield™module helps extend heat exchanger life, while the Unitherm Governor® minimizes condensation and thermal shock for improved efficiency and reliability.

The digital LCD control panel provides precise temperature adjustment and built-in diagnostic reporting for simplified operation and troubleshooting. Digital electronic ignition eliminates the need for a standing pilot while delivering dependable startups and improved operating efficiency. Certified to ASME and ANSI Z21.56 standards, the B-R406A-EN-X #50 is built for installations where safety, durability, and code compliance are essential.

Key Features

• 399,000 BTU natural gas pool and spa heater
• ASME-certified commercial construction
• Premium cupro-nickel fin tube heat exchanger
• Heavy-duty bronze headers
• Digital electronic ignition
• Digital LCD control panel
• ProTek Shield™ heat exchanger protection
• Unitherm Governor® reduces condensation
• Superior corrosion resistance for saltwater applications
• 125 PSI pressure relief valve included
• 2" bronze water connections
• Weather-resistant polyester-coated galvanized steel cabinet
• Built-in diagnostic display
• Outdoor installation
• Designed for elevations from 0–2,000 ft
• Ideal for commercial and high-demand residential pools and spas

Specifications

What's Included

• Raypak 017402 B-R406A-EN-X #50 ASME Digital Natural Gas Pool & Spa Heater
• Digital LCD Control Panel
• Bronze Header Assembly
• 125 PSI Pressure Relief Valve
• Installation Hardware
• Installation & Owner's Manual

The Raypak 017402 B-R406A-EN-X #50 is trusted by commercial pool professionals for its ASME-certified construction, premium cupro-nickel heat exchanger, and heavy-duty bronze headers. Designed for continuous-duty commercial environments, it delivers fast, efficient, and reliable pool and spa heating while providing the long-term durability and performance Raypak commercial heaters are known for.

Learn more at https://www.raypak.com/products/pool-and-spa/commercial-pool-and-spa-heaters/