The Hayward H400FDNASME Universal H-Series 400K BTU ASME Natural Gas Heater is a high-performance solution for commercial pools, combining energy efficiency, reliability, and advanced features. Certified for commercial use, this heater delivers exceptional heating speed and low-NOx emissions while offering flexible installation options. Ideal for both new and existing applications, it ensures optimal pool heating with minimal space usage.

Key Features:

• Patented Cupro-Nickel Finn Plate Heat Exchanger: Built with a bronze header for superior durability and performance, especially in harsh pool environments.

• Flexible Connection Options: Independent left or right side electric, water, and gas connections make installation adaptable to various setups.

• CPVC Flanged Connections: 2″ x 2 1/2″ CPVC connections ensure reliable, secure plumbing connections for your pool heating system.

• ASME Pressure Relief Valve: Included as a standard feature for safety, ensuring the system remains within safe pressure limits.

• Electronic Lock-Out Feature: Prevents unauthorized access to configuration settings, enhancing security and preventing tampering.

• Easy Installation & Service: Designed for quick installation and easy maintenance with convenient access through a single front panel.

• Gas Valve Adjustment: Simple adjustments to the gas valve ensure precise control over the heaters operation.

• Dual Voltage Conversion: Easy conversion between voltage options with fuse-protected circuit boards, ensuring adaptability.

• Texas Heater Kits Available: Compatible with specific heater kits designed for commercial applications.

• High Heating Speed: The 400,000 BTU model offers fast heating, and together with the 500,000 BTU option, the H-Series provides a total of 1 million BTU, delivering rapid heating in minimal pump room space.

• Planet-Friendly, Low-NOx Emissions: Designed with energy efficiency and environmental sustainability in mind, providing optimal heating with reduced environmental impact.