Description
Identification and Platform: The number 017402 is Raypak’s reference for the B-R406A-EN-X model of the Digital ASME series. The code breaks down as follows: B = ASME Professional series, R406A = 406,000 BTU chassis, E = electronic ignition, N = natural gas, X = cupronickel exchanger. A standard copper version exists with a different part number.
Capacity and ASME Certification: 399,000 BTU input capacity heater (nominal 406,000 BTU), ASME certified (American Society of Mechanical Engineers). This certification makes it suitable for commercial, municipal, hotel, condominium, and community installations where local codes require pressure vessel-certified equipment. Each ASME heat exchanger is individually inspected by a state inspector.
Heat Exchanger: It incorporates a finned-tube cupronickel heat exchanger, a material that offers superior corrosion resistance compared to standard copper. Cupronickel is especially suitable for saltwater pools, spas, and applications with aggressive or fluctuating water chemistry. The headers are made of bronze, providing greater strength and durability for heavy-duty ASME applications.
ProTek Shield Protection: It includes the ProTek Shieldâ„¢ module, a replaceable Raypak component that helps protect the heat exchanger against corrosion and galvanic degradation, extending the equipment’s service life.
Digital Control and Ignition: It features a microprocessor-based digital control for precise temperature adjustment with constant water reading on an LCD display, an onboard diagnostic system that displays service codes for easier troubleshooting, and electronic ignition that eliminates the need for a standing pilot. It is compatible with most remote control systems on the market.
Design and Construction: Cabinet made of galvanized steel with a 7-stage Polytuff powder coating, resistant to corrosion and weathering. Low-profile design that protects against wind, leaves, rain, and debris, allowing outdoor installation without the need for forced ventilation. The Unitherm Governor automatically regulates water flow to keep the heat exchanger temperature above 105°F, preventing condensation and scale buildup.
Specifications: 2-inch water connections, 0-2,000 ft elevation, 125 GPM maximum water flow, approximate weight of 271-275 lbs, 120V or 240V voltage.
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