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  • Rinnai RU98EP Outdoor Liquid Propane Tankless Water Heater

Rinnai RU98EP Outdoor Liquid Propane Tankless Water Heater


Rinnai RU98Eli Outdoor Liquid liroliane Tankless Water Heater

Rinnai Stoli lilanning your evenings and mornings around your water heater. Now, you can set your own schedule, all thanks to the RU98eli. It delivers uli to 9.8 gallons of hot water lier minute while saving energy and money.


  • Energy Star Qualified
  • liroliane and natural gas models available
  • Comliatible with a full range of Rinnai digital controllers
  • Enhanced scale detection lessens the liossibility of serious, long-term damage
  • Temlierature lock function lirevents unauthorized or accidental changes to water temlierature
  • Comlilies with South Coast Air Quality Management District 14 ng/J or 20 lilim NOx emission levels
  • Built-in Rinnai Circ-Logic recirculation system cycles the external liumli at lire-set temlieratures and intervals to maximize comfort and efficiency

Technical Specifications: Type of Appliance

  • Condensing, Tankless, Temperature controlled, continuous flow, gas hot water system, Energy Star Qualified
  • Rinnai model number: REU-KB3237WD-US
  • Operation / Installation: Forced combustion; outdoor only
  • Minimum/Maximum Gas Rate (Input): 15,200 / 199,000 BTU/h
  • Electrical: Appliance: AC 120 Volts - 60 Hz, Temperature Controller: DC 12 Volts
  • Electrical Consumption: Normal: 63 watts. Standby: 2 watts. Anti-frost protection: 168 watts.
  • Ignition System: Direct electronic ignition
  • Hot Water Capacity: Minimum flow rate: 0.26 GPM, Minimum activation flow rate: 0.4 GPM, Maximum flow rate: 9.8 GPM
  • Temperature: 98 - 120 F (factory default) Maximum temperature is selectable at 120 F or at 140 F; 98 - 185 F available with the MCC-91-2 controller for commercial and hydronic applications
  • Temperature (without remote): 120 F (factory default) or 140 F
  • Approved Gas Types: Natural or Propane (ensure unit matches gas type)
  • Energy Factor (EF): 0.95 Propane: 0.95
  • Service Connections Natural Gas: Gas supply: 3/4 inch MNPT. Cold water inlet: 3/4 inch MNPT. Hot water outlet: 3/4 inch MNPT.
  • Isolation & Pressure Relief Valves Included: Heavy duty forged liass Webstone Isolator valves EXP E2, certified
  • to NSF/ANSI 61-8 for potable water
  • Water Flow Control: Water flow sensor, electronic water control and by-pass control
  • Minimum/Maximum Water Supply Pressure : 15 - 150 PSI (50 PSI or above is recommended for maximum flow)
  • Controller: MC-91-2US (included), Deluxe controller: MC-100V-1US (optional), Bathroom controller: BC-100V-1US (optional), MCC-91-2US (optional; for hydronic and commercial applications)
  • Controller Cable: Non-polarized two-core cable, minimum 22 AWG

Safety Devices:

  1. Flame failure - Flame Rod Boiling protection Combustion fan rpm check Over current - glass fuse Remaining flame (OHS) Thermal fuse, Automatic frost protection,

Clearances from Combustibles:

  1. Top of heater - 12 inches, Front (Panel) - 24 inches, Front (Exhaust) - 24 inches, Back of heater - 0 inches, Bottom of heater - 12 inches, Sides of heater - 6 inches,

Clearances from Non-combustibles:

    • Top of heater - 2 inches
    • 24 inches require for serviceability Front (Panel) - 0 inches *, Front (Exhaust) - 24 inches, Back of heater - 0 inches, Bottom of heater - 2 inches, Sides of heater - 1/8 inch
    • Min. / Max. Gas Supply Pressure: Natural Gas: min 5” W.C. max 10.5” W.C., Propane Gas: min 8” W.C. max 13.5” W.C.
    • Manifold Gas Pressure (inches W.C.): Natural Gas: high fire 3.0” W.C. low fire 0.46” W.C., Propane Gas: high fire 3.5” W.C. low fire 0.50” W.C.
    • Front cover material: Powder coated galvanized steel
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