Rinnai High Efficiency Water Heaters


RU98i (REU-KB3237FFUD-US) Ultra Series Tankless Water Heater

Brand :

ENERGY STAR® Qualified
Energy Factor of .95 for Natural Gas and Propane
Built-in Rinnai Circ-LogicTM recirculation program cycles an external pump at pre-set intervals and temperatures to maximize efficiency and comfort
Enhanced scale detection lessens possibility of serious, long-term damage to unit
Temperature lock function prevents accidental or unauthorized changes to water temperature
Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels
Multiple venting options available including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor allow for an easy installation
  • Product Specifications
  • Dimensions
    Width: 18.3 Inches
    Height: 26 Inches
    Depth: 10 Inches
  • Weight
    61.7 Pounds
  • Ignition
    Direct Electronic
  • Hot Water Capacity
    0.26 to 9.8 GPM
  • Minimum Activation Rate
    0.4 GPM
  • Minimum/Maximum Gas Rate (Input BTUs)
    15,200 - 199,000
  • Energy Factor
    0.95 for Natural Gas and Propane
  • Energy Star
  • Approved Gas Types
    Natural Gas or Propane
  • Temperature Settings
    98°F - 140°F with MC-91-2US
    98° F - 185° F with MCC-91-2US
  • Type of Controller
    MC-91-2US (included)
    MCC-91-2US (optional for Commercial or Hydronic Applications)
    MC-100V-1US Deluxe Controller (optional)
    BC-100V-1US Bathroom Controller (optional)
  • Ultra Lox NOx
  • Electrical
    AC 120 Volts, 60 Hz
  • Electrical Consumption
    Normal: 64 Watts
    Standby: 2 Watts
    Anti-Frost Protection: 146 Watts
  • Service Connections
    Gas Supply: 3/4 Inch MNPT
    Cold Water Inlet: 3/4 Inch MNPT
    Hot Water Outlet: 3/4 Inch MNPT