Commercial Electric Water Heaters
®
DURA-POWER
180°F BOOSTER MODELS
Dura-Power® commercial electric water heaters are designed to boost the water temperatures for applications such as commercial dishwashers, which require very high temperature sanitizing rinse—typically 180°F. Both 5-gallon countermount “CMC” models and 20-gallon “SU” models are available with inputs up to 54 kW. Models are also available with an optional stainless steel tank for use with deionized water.
FEATURES
INCOLOY-SHEATH HEATING ELEMENTS STANDARD
Industrial-grade Incoloy sheathed heating elements are designed for rugged longlasting commercial service and can withstand sheath temperatures up to 1500°F
Each heating element has three separate heating loops, which provides more heating surface, lower watt density and maximum recovery efficiency
Pre-wired leads provide excellent protection against oxidation and scaling
Input options from 6 kW to 54 kW, recoveries from 25 to 221 gallons per hour (gph) at 100°F rise
Deionized models equipped with stainless steel standard elements
A. O. SMITH GOLDENROD® ELEMENTS OPTIONAL
Patent-pending 24k gold-plated sheath plus medium watt-density ensures even longer element life
Higher resistance to scale build-up, compared to Incoloy elements Three-year warranty against failure due to lime scale build-up Not available on deionized models
STANDARD VOLTAGES FOR EASY INSTALLATION
Single-phase and three-phase
Single-phase 208V and 240V are field-convertible to three-phase
CMC models only, 208V and 240V at 24 kW and below are supplied as phase-convertible units (singleto three-phase and vice versa)
277V single-phase also available – Contact A. O. Smith for 120V circuit availability
IMMERSION THERMOSTAT FOR EFFICIENT CONTROL
Close-differential, immersion-type thermostat for superbly accurate temperature control Adjustable from 140°F to 185°F
Manual reset, high-temperature cutoff
HEAVY-DUTY MAGNETIC CONTACTORS
UL-rated 100,000 cycles
FACTORY-WIRED, 120V CIRCUIT CONTROLS
120V control circuit powered by fused transformer Eliminates need for 120V service connection
MODELS CMC/SU-6 through CMC/SU-54
(Optional)
August 2009R |
PG 1 OF 4 |
AOSCE15700 |
|
December 2012R |
|
Commercial Electric Water Heaters
®
POWER-CIRCUIT FUSING FOR SYSTEM PROTECTION
Safeguards elements and contactors from short circuits, overloading and line surges
Required by National Electric Code and UL when current draw exceeds 120 A
ALL STAINLESS STEEL JACKET
Cleans easily, corrosion resistant, hinged for easy serviceability
Standard on CMC models, optional on SU models
GLASSLINED TANK, ASME TANK CONSTRUCTION
Specifically developed for high-temperature water heater use
Provides long-lasting protection against corrosion
Equipped with anode rod for additional corrosion protection
Stainless steel tank on deionized models
MAXIMUM HYDROSTATIC WORKING PRESSURE: 150 PSI
CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
MEETS THE THERMAL EFFICIENCY AND/OR
STANDBY LOSS REQUIREMENTS OF THE U.S. DEPARTMENT
OF ENERGY AND CURRENT EDITION ASHRAE/IESNA 90.1
THREE-YEAR LIMITED TANK WARRANTY
For complete information, consult written warranty
OTHER DURA-POWER CMC AND SU SERIES STANDARD FEATURES:
SIMPLIFIED, COLOR-CODED CIRCUITRY FOR EASE OF SERVICE
CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
PRESSURE REDUCING VALVE WITH BYPASS CHECK AND STRAINER
TEMPERATURE/PRESSURE GAUGES
OTHER DURA-POWER CMC AND SU SERIES OPTIONS:
STAINLESS STEEL TANK
• For deionized water
LOW-WATER CUTOFF
•Probe-type electric low-water cutoff
•Prevents energizing of elements when low-water condition exists (automatic reset)
UNDERCOUNTER MOUNTING PAN FOR CMC MODELS
DUAL INDICATING/PILOT LIGHTS AND SWITCH
• Lights indicate when elements are on, switch gives positive on-off control of control circuit
SHOCK ABSORBER REDUCES WATER HAMMER
December 2012R |
PG 2 OF 4 |
www.hotwater.com |
AOSCE15700 |
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