A.O. Smith DSE-5A, DSE-10A, DSE-20A, DSE-30A, DSE-40A User Manual

COMMERCIAL

ELECTRIC WATER HEATERS

CUSTOM Xi™ SERIES

HEAVY DUTY COMMERCIAL ELECTRIC WATER HEATERS

ADVANCED ELECTRONIC CONTROL

• 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.

PLAIN ENGLISH TEXT

• Animated icons display detailed operational
and diagnostic information. Fault or Alert
messages appear if an operational issue
occurs.

ELEMENT SENSING

• 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.

SEQUENCING

• 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.

NIGHT SETBACK OPERATION

• 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.

BUILDING MANAGEMENT SYSTEM

• BACnet or Modbus compatible with optional
ICC Gateway.

• Call 1.888.WATER02 for more information.

POWERED ANODE

• 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.

INCOLOY IMMERSION HEATERS

• Heavy-duty elements provide excellent
protection against oxidation and scaling.
Input ranges from 3kW to 90kW available
(see accompanying chart). Rugged, industrial
grade, elements.

FOAM INSULATED

• 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.

GLASSLINED TANK

• 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

THREE YEAR LIMITED WARRANTY

• For complete warranty information consult
written warranty.

Features and benefits continued on the following page.

Attention: Changes have been made to some models.
Please note that this spec sheet refers specifically to models
manufactured in McBee, SC

DSE-5A thru DSE-120A

(DSE-100A Shown)

© August 2018 | A. O. Smith Corporation. All rights reserved.

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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AOSCE15100

FEATURES AND BENEFITS (CONTINUED)

COMMERCIAL

ELECTRIC WATER HEATERS

STANDARD VOLTAGES

• 208, 240 and 480 volt single and three phase. All 208 and 240 volt at 24kW
and below are supplied phase convertible (single to three and vice versa).
277 volt single phase also available. Consult factory for 120 volt power
circuit availability.

TERMINAL BLOCK

• To accept copper or aluminum leads (on units with more than one
contactor).

120 VOLT CONTROL CIRCUIT

• Powered by fused transformer.

MAGNETIC CONTACTORS

• 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.

SIMPLIFIED CIRCUITRY, COLOR-CODED FOR EASE OF SERVICE

HINGED CONTROL COMPARTMENT DOOR

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

ROUGH-IN DIMENSIONS

Model Number

DSE-5A 5 19 3 22 in 16 in 24 in 4.25 in 82 37.2
DSE-10A 10 38 6 28.13 in 18 in 26 in 5.25 in 116 48.1
DSE-20A 20 76 18 31.75 in 22 in 28 in 5.75 in 145 65.7
DSE-30A 30 114 24 43.25 in 22 in 28 in 5.75 in 218 98.9
DSE-40A 40 151 36 54.75 in 22 in 28 in 5.75 in 245 111.1
DSE-50A 50 189 90 66.19 in 22 in 28 in 5.75 in 291 132.0
DSE-65A 65 246 90 57.25 in 26.5 in 32.5 in 11.38 in 344 156.0
DSE-80A 80 303 90 58.13 in 28 in 35 in 12.5 in 406 184.2
DSE-100A 100 379 90 70.25 in 28 in 35 in 12.5 in 419 190.1
DSE-120A 120 450 90 70.25 in 30.13 in 37 in 12.5 in 453 205.5

* Not available in 208 volt

Tank Capacity

Gallons Litres A B C D lbs. Kg.

Maximum kW

Input

*

Dimensions in Inches (mm) Approx. Shipping Weight

AOSCE15100

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