Product Overview

The Raypak B-R408-EN-X #50 Professional ASME Natural Gas Heater is a commercial-grade pool and spa heater designed for high-demand residential and light commercial applications. With 399,000 BTU heating performance, electronic ignition, 2-inch bronze headers, and a cupro-nickel heat exchanger, this heater is built for durability, reliability, and long-term performance in demanding pool environments.

As part of Raypak’s Professional Series, this ASME-certified heater is well suited for properties that require heavier-duty construction than a standard residential heater. Its cupro-nickel heat exchanger offers improved corrosion resistance, making it a strong option for saltwater pools, coastal environments, and applications with more challenging water conditions.

Ideal For

This heater is ideal for customers who need a heavy-duty natural gas pool and spa heater with ASME-rated construction and enhanced corrosion resistance.

Recommended for:

• In-ground pools and attached spas
• Large residential pools
• High-end residential pool systems
• Light commercial pool applications
• Apartments, condos, hotels, motels, schools, parks, and community pools
• Saltwater pool applications
• Coastal environments or challenging equipment pad conditions
• Natural gas pool heating systems
• Standard elevation installations from 0–2,000 ft

Key Features

Professional Series ASME Construction
Built for demanding pool and spa applications where commercial-grade durability and ASME compliance are required.

399,000 BTU Heating Performance
Provides powerful heating capacity for large pools, spas, and high-demand applications.

Natural Gas Operation
Designed for use with natural gas fuel systems.

Electronic Ignition
Starts efficiently without the need for a standing pilot.

Cupro-Nickel Heat Exchanger
Provides enhanced corrosion resistance compared to standard copper exchangers, making it a strong choice for saltwater and challenging water conditions.

2-Inch Bronze Headers
Heavy-duty bronze headers support durability and long-term performance in demanding installations.

Digital LCD Control Panel
Allows easy temperature control, heater settings, operational monitoring, and diagnostic readouts.

Flow Switch and T&P Gauge Standard
Includes key ASME-related safety and monitoring components for commercial-style installations.

Stainless Steel Internal Components
Features stainless steel construction in critical areas such as the burner tray, base, and flue collector for added durability.

ProTek Shield Technology
Helps protect the heat exchanger and internal components from corrosion.

Unitherm Governor and Bypass System
Helps reduce condensation and supports proper flow through the heat exchanger.

Remote Compatible
Can be connected to compatible pool control systems for added convenience.

Benefits

The Raypak B-R408-EN-X #50 Professional ASME Heater gives pool owners and commercial property operators powerful natural gas heating with heavier-duty construction than a standard residential model. Its 399,000 BTU capacity provides fast heat-up performance, making it a strong choice for large pools, attached spas, and high-use pool environments.

The cupro-nickel heat exchanger and 2-inch bronze headers provide added protection in saltwater, coastal, and more demanding water conditions. ASME construction, included flow switch, T&P gauge, stainless steel components, and Raypak’s digital controls help deliver reliable performance, easier monitoring, and long-term durability.

For customers replacing an existing Raypak Professional Series ASME heater, this model may also provide a familiar installation footprint and operating experience.

Specifications

Customer-Facing Q&A

Is this heater natural gas or propane?
This listing is for the natural gas Raypak B-R408-EN-X #50 Professional ASME model.

Is this heater ASME certified?
Yes. This model is part of Raypak’s Professional Series ASME heater lineup.

What does #50 mean on this Raypak heater?
The #50 version identifies this natural gas configuration for standard elevation applications.

What elevation is this model designed for?
This heater is designed for standard elevation installations from 0–2,000 ft.

Is this a digital heater?
Yes. This model includes Raypak’s digital LCD control system for temperature adjustment, heater settings, operational monitoring, and diagnostic readouts.

Does this heater have electronic ignition?
Yes. This heater uses electronic ignition.

Does this model have bronze headers?
Yes. This heater includes 2-inch bronze headers for heavy-duty durability.

Is the heat exchanger copper or cupro-nickel?
This model uses a cupro-nickel heat exchanger, which provides improved corrosion resistance compared to standard copper.

Can this heater be used with saltwater pools?
Yes. The cupro-nickel heat exchanger and bronze headers make this model a strong choice for saltwater pools and more demanding water conditions. Proper water chemistry must still be maintained.

Is this suitable for commercial pools?
Yes. This Professional Series ASME heater is designed for high-demand residential and light commercial applications, including apartments, condos, hotels, community pools, and similar installations.

Does this heater require professional installation?
Yes. Natural gas ASME pool heaters should be installed by a licensed plumber, qualified pool professional, or gas appliance technician according to manufacturer instructions and local code requirements.

Can this heater be installed indoors?
This model is commonly used for outdoor installation. Indoor installation requires proper venting and must follow the manufacturer’s instructions and local code requirements.