Boiler Burner for Large Firetube Boilers

HDR-RF Register Burner With Remote Fan


HDR(S)-RF burners increase the efficiency of Watertube and Firetube Boilers.


“Webster continues its leadership in combustion innovation” with upper-range combustion equipment. The series HDR(S)-RF takes the lead in meeting the demands of today’s customers. Webster continues to expand the size offering in the firetube line. The HDR(S)-RF burner has led the way to larger firetube boiler sizes, up to 2,600 BHP.

Click here for the HDR-RF Register Burner quote form for a price or to contact us for your needs or questions.

The versatility and flexibility of Webster’s Series HDR(S)-RF burners save time and money. Our HDR(S)-RF readily adapts to most available boiler and furnace configurations. HDR(S)-RF can be installed vertically, horizontally, left or right to accommodate even the most unique on-site condition. The HDR(S)-RF series combustion head is capable of burning a wide range of fuels from Natural, LP and low BTU gas to all commercially available grades of fuel oil and qualified waste oil… either separately or in combination.

HDR(S)-RF series are full register burners for both Firetube and Watertube boiler applications. This Series provides high turndown (12:1 on gas) and flame shaping to fit different furnace configurations. Offers flexible mounting styles including remote fan. Also available to meet many different low emission applications.

A wide choice of burner arrangements is available with the HDR(X)-RF package burner system. Webster’s engineering team will assist you in designing the best arrangement for your application. Flexibility in design and assembly means that the HDR-RF can be applied to a wide variety of installations, including firetube boilers, package watertube boilers, field erected boilers, dryers and heaters.

HDR(X)-RF Features:

  • Excellent flame stability for reliable low NOx performance
  • Low excess air for extremely efficient operation
  • Fully modulating register for flame shaping
  • High turndown rates
    • Up to 10 to 1 on gas firing
    • Up to 8 to 1 on oil firing
  • High combustion efficiency
  • Fire multiple fuels
    • Natural, LP or digester gas
    • No. 2 through No. 6 oils
  • Configurable blower housing to match application requirements
  • Field-proven ignition system with an extremely stable pilot
  • High efficiency combustion air fans to optimize electrical needs
  • IFGR system with a shutoff valve in the flue gas recirculation duct to prevent flue gas from reentering the burner during the purge cycle
  • Access doors for easy service of firing head, fan and FGR duct for maintenance
  • Remote mounted combustion air fan and motor
  • Fire all types of boilers: Scotch-Marine Firetube, Watertube, Flextube, Firebox, as well as heaters and other vessels

Webster Combustion has the best lead times in the industry. To configure the perfect HDR(X)-RF burner for your application and obtain current scheduling information, contact Webster or visit to locate a sales office in your area.

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