A.O. Smith

A.O. Smith® DSE-20A DSE Commercial Electric Water Heater, 20 gal Tank, 12KW, 480 V, 3 Phase

AOSDSE20A12KW480V3PH MFG #: DSE-20A
A.O. Smith® DSE-20A DSE Commercial Electric Water Heater, 20 gal Tank, 12KW, 480 V, 3 Phase
  • Phase: 3
  • Power Rating: 18,000 W
  • Tank Capacity: 20 gal
  • Voltage Rating: 480 V
  • Dimensions: 22 in W x 31-3/4 in H x 28 in D
  • Manufacturer: AO Smith
  • Manufacturer #: DSE-20A
  • Pressure Rating: 160 psi
  • Recovery Rate: 249 gph at 30 deg F Rise
  • Series: DSE
  • Temperature Rating: 90 to 190 degF
  • Water Connection: 1-1/4 in NPT
Looking for model-specific repair or replacement parts? Enter the unit’s serial number into the AO Smith Parts Finder.

  • Features
  • A.O. Smith’s new proprietary electronic water heater control provides precise + or – 1° temperature control that is ideal for industrial and food service applications where exact temperatures are needed
  • The Operating Set Point is adjustable from 90°F/42°C to 190°F/88°C. The factory setting is 120°F/49°C
  • Approved for 180°F/82°C sanitizing applications
  • Animated icons display detailed operational and diagnostic information. Fault or alert messages appear if an operational issue occurs
  • Each element is constantly monitored and current on/off state is displayed, any element failure is reported and its exact location is shown, eliminates a need for field testing of elements
  • Factory standard on board low water cutoff uses a remote electric immersion type probe to prevent energizing of the elements in the event of low water condition and eliminates accidental dry firing
  • Units with multiple element contactors are sequenced on with one-second delay between stages. Prevents high amp electrical loads from hitting the electric system all at once and provides a smoother operating unit
  • Control system automatically lowers the operating set point by a user defined value during setback periods. Seven-day clock may be programmed for night set back and or weekend shutdown to reduce operating cost and save energy
  • BACnet or Modbus compatible with optional ICC Gateway
  • The DSE models use a unique combination of a conventional sacrificial anode and an adaptive powered anode. The powered anode is self-adjusting to water conditions, does not require maintenance and provides longer-lasting tank protection in hard to reach areas. This multi-anode system provides superior anodic protection to hidden surfaces of the tank not protected in conventional commercial electric water heaters
  • All models meet or exceed the thermal efficiency and/or standby loss requirements of the U. S. Department of Energy and current edition ASHRAE/IES 90.1
  • A.O. Smith’s PermaGlas® coating provides truly superior protection against corrosion and is permanently bonded to all inner tank surfaces at 1600°F
  • ASME tank construction 160 psi working pressure
  • 120 Volt control circuit powered by fused transformer
  • Magnetic contracters. Heavy-duty UL rated for 100,000 cycles
  • Simplified circuitry, color-codes for ease of service
  • Hinged control compartment door
  • CSA certified and ASME rated T&P relief valve