A. O. Smith DSE-10 User Manual

®

Commercial Electric Water Heaters

CUSTOM Xi™ SERIES

HEAVY DUTY COMMERCIAL ELECTRIC WATER HEATERS

FEATURES

ADVANCED ELECTRONIC CONTROL

A. O. Smith’s new proprietary electronic water heater control, provides precise + or – 1°F
temperature control, that is ideal for industrial and food service applications where exact
temperatures of hot water are needed.

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 it’s exact location is shown, eliminates any
need for field testing of elements.

Low Water Cut Off – Factory standard on board low water cutoff uses a remote electronic
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.

Economy Mode Operation – Control system automatically lowers the operating set point
by a programmed value during user defined time periods. Seven-day clock may be
programmed for night set back and or weekend shutdown to reduce operating cost
and save energy.

MODELS

DSE 5 – 120

iCOMM™ Compatible – Call 1.888.WATER02 for more information.

POWERED ANODE

The DSE models use a unique combination of a conventional magnesium anode and a
European style power anode. The powered anode is self-adjusting to water conditions,
does not require maintenance unless damaged, 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 convention commercial electric water heaters.

INCOLOY IMMERSION HEATER S – Heavy-duty medium watt density

elements have incoloy sheathing and prewired leads: provides excellent
protection against oxidation and scaling. Input ranges from 3kW to 90kW
available (see accompanying chart).

All models meet or exceed the thermal efficiency and/or standby

HEAVY FOAM INSULATED –

loss requirements of the U. S. Department of Energy and current edition ASHRAE/IESNA 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 – 125 psi working pressure (65 thru 120 gallons), 150 psi

working pressure (5 thru 50 gallons).

THREE YEAR LIMITED WARRANTY – For complete warranty information consult written

warranty.

PG 1 OF 4

Revised June 2013

Revised October 2008

AOSCE15100

®

Commercial Electric Water Heaters

FEATURES (Continued)

STANDARD VOLTAGES – 208, 240 and 480 volt single and three phase. Single phase 208 and 240 are convertible to 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 – 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

BRASS DRAIN VALVE

HINGED CONTROL COMPARTMENT DOOR

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

Revised June 2013

Revised October 2008 PG 2 OF 4

www.hotwater.com

AOSCE15100