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JP Trading Inc.>Commercial Water Heater>Raypak RAYTHERM ® Water Heater, 2100-4001

Raypak RAYTHERM ® Water Heater, 2100-4001


Model: 2100-4001

Raypak's family of Raytherm Water Heaters, 2100-4001, feature rugged all-brass headers, corrosion resistant steel, and floating return headers.

Category: Commercial Water Heaters

Rated 4.2/5 based on 8 customer reviews

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Model Number Full Input in
 Flue Dia.
WH-2100 2,100,000  24″
WH-2500 2,499,000  26″
WH-3001 3,000,000  28″
WH-3500 3,500,000  30″
WH-4001 4,000,000  32″

*Propane input is 92% of stated value.

Available Firing Modes

WH1 On-off
WH2 Mechanical modulation, setpoint 110F-170F
WH3 2-Stage
WH9 4-Stage


  • Rugged All-Brass Headers
    Resists corrosion, easily removed for inspection or service. AB 1953 compliant.
  • Finned Copper Tube Heat Exchanger 
    Single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.
  • Glass-lined, cast-iron headers and cupro-nickel tubes available as options.
  • Indoor Only.
  • Combination Modulating Valves
  • Corrosion Resistant Steel
    Fittings are brush galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.
  • 24-Volt Controls
    Totally enclosed for protection. Door is easily removed for inspection and service.
  • Floating Return Header
    Immunizes heat exchanger from thermal shock.
  • Tube Sheet and “O” Ring Construction
    Eliminates repair and maintenance problems associated with rolling tubes directly into a casting.
  • Interlocking Refractory Panels
    Sealed corners, reduces radiation loss.
  • Stainless Steel Burners
    Maintains precise combustion at all firing rates, burns quietly, won’t clog or corrode.
  • Slide-Out Burner Tray
    Allows easy inspection and service.
  • Spark-to-Pilot Ignition
    Most dependable ignition method available.
  • Available for Natural Gas or Propane.