A.O.Smith Commercial Electric Water Heaters : DSE Series
The DSE Series are Commercial Electric Floor Standing Water Heaters. 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. These water heaters are manufactured in USA and are UL Certified.
Available Capacities
- 65 to 120 Gallon capacity.
- Three Phase
- 90 kW
Technical Features:
Heating Element
Commercial Grade Incoloy Sheathing elements provide excellent protection against oxidation and scaling.
Thermostats
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.
Display
Animated Icons display detailed Operational and Diagnostic information. Fault or alert messages appear if an operational issue occurs
Monitoring of Elements
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.
Low Water Cut off
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.
Prevents High Amp Electrical Loads
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. Adjustable modulating mode is optional see options.
Control System
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.
Pressure Rating
ASME tank construction 160 psi working pressure
Terminal Block
Terminal block. To accept copper or aluminum leads (on units with more than one contactor.
Control Circuit
120 Volt control circuit powered by fused transformer.
Internal Fusing
Magnetic contracters. Heavy-duty UL rated for 100,000 cycles. Power circuit fusing (120 amp current draw and above). Meets National Electric Code and UL requirements that water heaters must have internal fusing when current draw exceeds 120 amps.
Ease of Service
Simplified circuitry, color-codes for ease of service.
Compartment Door
Hinged control compartment door.
Internal Coating
A.O. Smith’s PermaGlas® coating provides truly superior protection against corrosion and is permanently bonded to all inner tank surfaces at 1600°F.
Anode Rods
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.
Temperature and Pressure Safety Relief Valve
CSA certified and ASME rated T&P relief valve.
Code Compliance
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.
Power Supply
The Water Heaters are suitable for operation on 3-Phase, 380-415 Volts and 50 Hz Power Supply.
Optional
Handhole cleanout
Dial type combination temperature & pressure gauge (Shipped loose)
Power circuit fusing (less than 120 amps)
- Sub-divides internal circuitry with maximum of 60 Amp fuses. Supplied as standard when required by NEC and UL.
Alarm Horn
- Horns may be furnished to warn of any condition in the heater for which sensors have been specified.
Optional international voltages
- 380, 415, 575 and 600 volts three-phase available with Y connected elements.
Modulating control
- The first element on is the first element off.
- Not available on single element, single contactor units.
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