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Product Overview

The Raypak B-R336A-EN-X #50 Digital ASME Natural Gas Heater 017401 is a heavy-duty pool and spa heater designed for dependable heating performance, digital control, and ASME-rated construction. With a 332,500 BTU natural gas heating capacity, this model is a strong option for commercial pools, spas, and residential systems where ASME construction is required.

This heater features a cupro-nickel heat exchanger for enhanced durability in demanding water conditions, along with 2" bronze headers for added strength and long-term reliability. The included ProTek Shield Module provides additional corrosion protection for key heater components when the system is properly installed and maintained.

With natural gas operation, electronic ignition, digital controls, cupro-nickel construction, and Raypak’s service-friendly design, the 017401 is built for reliable performance in commercial and code-sensitive pool and spa installations.

Ideal For

The Raypak 017401 heater is ideal for:

• Commercial pool and spa systems
• Residential pools requiring ASME equipment
• Apartment, HOA, hotel, and facility pools
• Spas and therapy pools
• Natural gas installations
• Saltwater pool applications
• Medium to larger pool and spa systems
• Applications requiring cupro-nickel durability
• Installations requiring 2" bronze headers
• Replacing older Raypak B-R336A ASME natural gas heaters

Key Features

332.5K BTU Heating Performance

The Raypak B-R336A-EN-X provides 332,500 BTU of natural gas heating power, making it suitable for commercial and residential pool/spa applications that require strong and dependable heat output.

ASME-Rated Construction

Built to ASME standards, this heater is designed for applications where commercial-grade pressure vessel construction may be required by code or project specification.

Natural Gas Operation

Designed for use with natural gas, making it a practical choice for properties with existing natural gas service.

Cupro-Nickel Heat Exchanger

The cupro-nickel exchanger provides added resistance compared with standard copper, especially in saltwater pools, spas, and applications with more aggressive water conditions.

2" Bronze Headers

Heavy-duty bronze headers provide added strength and durability for demanding pool and spa environments.

ProTek Shield Module

The included ProTek Shield Module helps protect key heater components from corrosion and supports longer equipment life.

Digital Control System

The digital control panel allows users to set and monitor water temperature easily. Built-in diagnostics help simplify troubleshooting and service.

Electronic Ignition

Electronic ignition provides reliable startup when there is a call for heat and eliminates the need for a constant standing pilot.

Benefits

The Raypak 017401 B-R336A-EN-X gives pool owners, facility managers, and service professionals a dependable combination of ASME construction, high BTU output, corrosion resistance, and easy digital operation. Its 332.5K BTU rating makes it a strong fit for commercial spas, facility pools, and residential systems where a heavy-duty ASME heater is required.

The cupro-nickel heat exchanger helps provide added protection in saltwater or more demanding water conditions, while the 2" bronze headers add durability for heavier-use applications. Digital controls make everyday operation simple, and built-in diagnostics help service professionals troubleshoot more efficiently.

Specifications

Important Installation Notes

This heater should be installed by a licensed pool, gas, or HVAC professional. Proper gas line sizing, electrical wiring, water flow, bonding, ventilation, clearances, and local code compliance are required for safe operation and warranty protection.

Because this is an ASME model, it may be required for certain commercial, public, or code-sensitive pool and spa applications depending on local code. Always confirm project requirements before ordering.

This model is designed for natural gas. It should not be used with propane unless the correct factory-approved propane model is selected.

Customer-Facing Q&A

Q: Is this heater natural gas or propane?
A: This model, Raypak 017401 / B-R336A-EN-X, is the natural gas version.

Q: How many BTUs is this heater?
A: This model is rated at 332,500 BTU, also commonly referred to as 332.5K BTU.

Q: What does ASME mean?
A: ASME means the heater is built to a recognized pressure vessel construction standard. ASME heaters are commonly used for commercial, public, or code-sensitive pool and spa installations.

Q: What is the benefit of cupro-nickel?
A: Cupro-nickel provides added resistance against aggressive water conditions compared with standard copper. It is a strong option for saltwater pools, spas, and heavier-use applications.

Q: What is the benefit of bronze headers?
A: Bronze headers provide added strength and durability compared with standard residential header materials, making them suitable for more demanding installations.

Q: What does #50 mean?
A: The #50 designation refers to the burner orifice configuration for this natural gas heater model.

Q: Does this heater include ProTek Shield?
A: Yes. This model includes the ProTek Shield Module for added corrosion protection.

Q: Does it have digital controls?
A: Yes. The heater includes a digital control system for temperature adjustment, monitoring, and service diagnostics.

Q: Can this heater be used on a saltwater pool?
A: Yes. The cupro-nickel exchanger makes it a strong option for saltwater applications, but proper water chemistry must still be maintained.

Q: Does this heater require professional installation?
A: Yes. Gas pool heaters must be installed by a qualified professional to ensure proper gas, electrical, venting, water flow, and bonding compliance.