RL75e (REU-VC2528WD-US)

RL75e (REU-VC2528WD-US)


Luxury Series Tankless Water Heater


  • ENERGY STAR® Qualified
  • Energy Factor of .82 for both Natural Gas and Propane
  • Certified for Installation in Manufactured (Mobile) Homes
  • Enhanced scale detection lessens the possibility of serious, long-term damage to the 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


Width: 14 Inches
Height: 23 Inches
Depth: 9.3 Inches

46 Pounds

Direct Electronic

Service Connections
Gas Supply: 3/4 Inch MNPT
Cold Water Inlet: 3/4 Inch MNPT
Hot Water Outlet: 3/4 Inch MNPT

Ultra Lox NOx

Hot Water Capacity
0.26 to 7.5 GPM

Minimum Activation Rate
0.4 GPM

Minimum/Maximum Gas Rate (Input BTUs )
10,300 – 180,000

AC 120 Volts, 60 Hz

Electrical Consumption
Normal: 57 Watts
Standby: 2 Watts
Anti-Frost Protection: 104 Watts

Energy Factor
0.82 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 - 160° 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)

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It can be summed up by saying that Keystone has truly been the easiest and most accommodating company to deal with at my summer cottage at Crystal Lake. Thank you for that.

Paula P.

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