Raypak B-R408-EN-X ASME Professional Natural Gas Heater 406,000 BTU | 013731

The high-performance choice for commercial and saltwater environments. The Raypak Professional Series (Model B-R408-EN-X) is an elite, industrial-grade heater specifically engineered for high-demand applications like hotels, schools, community pools, and high-end saltwater residential projects. Delivering a powerful 406,000 BTU output (often rated at 399,000 BTU for energy compliance), this heater is ASME certified, meeting the rigorous safety and pressure vessel standards required by commercial building codes across the country. The 013731 model is built to survive where others fail, featuring a premium Cupro-Nickel heat exchanger and Bronze Headers to withstand aggressive water chemistry and coastal salt air.

Features

Professional-Grade Cupro-Nickel Heat Exchanger: Constructed with a heavy-duty copper-nickel alloy, this heat exchanger is built to withstand the erosion and corrosion common in saltwater pools and high-use commercial facilities. It is significantly more durable than standard copper, ensuring a much longer lifespan under constant operation.

ASME Certified Bronze Headers: To meet commercial code requirements, this model features rugged bronze headers. Bronze is naturally resistant to corrosion and provides the structural strength needed to handle high-pressure commercial plumbing systems, unlike standard polymer headers.

Intelligent Digital Control System: The microprocessor-controlled thermostat allows for precise temperature management and features a constant self-diagnostic readout. It is fully compatible with most modern remote automation systems, giving you total control over your heating schedule.

ProTek Shield Technology: This unit includes Raypak's specialized ProTek Shield module, designed to take the brunt of galvanic corrosion (electrolysis). This replaceable module protects the heat exchanger's integrity, a critical feature for saltwater pool systems.

Durable Stainless Steel Construction: Spares no expense on longevity, utilizing stainless steel for the burner tray, flue collector, and internal components. This ensures the heater's internal structure remains rust-free and functional even in harsh coastal environments.

Unitherm Governor & High Flow Rates: Features a built-in Unitherm Governor to regulate water temperature and prevent condensation and "sooting." The unit is designed to handle high-flow commercial pumps up to 125 GPM with an integrated automatic bypass.

Non-Corrosive Cabinet Design: Housed in a polyester-coated, galvanized steel cabinet that is both UV-resistant and weather-proof. Its wind-resistant design ensures the pilot and burner remain functional in exposed outdoor or rooftop installations.

Specs

Notes

Commercial Compliance: This Professional Series ASME model is specifically designed to meet commercial safety codes. Due to its weight (approx. 274 lbs) and high gas demand, it must be installed by a licensed professional to ensure proper gas line sizing and venting, which is critical for maintaining the 3-year commercial warranty.