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: 28" D × 29" W × 40" H
Heating Capacity: 399,000 BTU
Fuel Type: Natural Gas
Heat Exchanger: Copper Fin Tube
Header Material: Bronze (ASME)
Ignition Type: Digital Electronic Ignition
Elevation Rating: 0–2,000 Feet

The Raypak 017374 B-R406A-EN-C #50 ASME Digital Electronic Ignition Natural Gas Pool & Spa Heater is engineered for commercial and high-demand residential applications requiring exceptional durability, reliable heating performance, and ASME-certified construction. Featuring a 399,000 BTU input, a premium copper fin tube heat exchanger, rugged 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, it is an ideal solution for hotels, apartment complexes, HOAs, aquatic centers, fitness clubs, and other high-demand pool and spa applications.

Built with Raypak's rugged polyester-coated galvanized steel cabinet, the B-R406A-EN-C #50 is designed to withstand harsh outdoor environments while providing years of dependable service. The heavy-duty bronze headers provide superior corrosion resistance and durability for commercial circulation systems, while the integrated ProTek Shield™ module helps protect the copper heat exchanger from premature wear caused by aggressive water chemistry. Raypak's Unitherm Governor® minimizes condensation and thermal shock, helping maximize heat exchanger life and long-term reliability.

The digital LCD control panel allows precise temperature adjustment while the onboard microprocessor continuously monitors heater operation and displays diagnostic information for simplified troubleshooting. Digital electronic ignition eliminates the need for a standing pilot, providing dependable startups and improved operating efficiency. Certified to ANSI Z21.56 standards and equipped with a 125 PSI pressure relief valve, the ASME Digital Series is built for applications where reliability, safety, and code compliance are essential.

Key Features

• 399,000 BTU natural gas pool and spa heater
• ASME-certified commercial construction
• Premium copper fin tube heat exchanger
• Heavy-duty bronze headers
• Digital electronic ignition
• Digital LCD control panel
• ProTek Shield™ heat exchanger protection
• Unitherm Governor® reduces condensation
• 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 017374 B-R406A-EN-C #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 017374 B-R406A-EN-C #50 is trusted by commercial pool operators and pool professionals for its ASME-certified construction, heavy-duty bronze headers, and dependable digital heating technology. Designed for continuous-duty commercial applications, it delivers fast, efficient, and reliable pool and spa heating while providing the long-term durability Raypak commercial heaters are known for.

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