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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. Are 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 long-
lasting 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 effi ciency
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
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 fi eld-convertible to three-phase
CMC models only, 208V and 240V at 24 kW and below are supplied as phase-convertible units
(single- to 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
July 2011R
August 2009R
Commercial Electric Water Heaters
®
®
ELEMENTS OPTIONAL
MODELS
CMC/SU-6
through
CMC/SU-54
(Optional)
Certifi ed to NSF/ANSI 61
AOSCE15700
PG 1 OF 4
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Related Manuals for A.O. Smith CMC/SU-54
Summary of Contents for A.O. Smith CMC/SU-54
- Page 1 FACTORY-WIRED, 120V CIRCUIT CONTROLS 120V control circuit powered by fused transformer Eliminates need for 120V service connection July 2011R August 2009R Commercial Electric Water Heaters ® MODELS CMC/SU-6 through CMC/SU-54 (Optional) Certifi ed to NSF/ANSI 61 PG 1 OF 4 AOSCE15700...
- Page 2 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 GLASS-LINED TANK, ASME TANK CONSTRUCTION Specifi...
- Page 3 INPUT CAPACITY AND RECOVERY MODEL STANDARD KW NUMBER INPUT CMC-6 SU-6 CMC-9 SU-9 CMC-12 SU-12 CMC-15 SU-15 CMC-18 SU-18 CMC-20 SU-20 CMC-24 SU-24 CMC-30 SU-30 CMC-36 SU-36 CMC-45 SU-45 CMC-54 SU-54 For deionized water models with stainless steel tanks, add “D” to model number. Examples CMCD-6, SUD-6.
- Page 4 Heater tank shall have a three (3) year limited warranty as outlined in the written warranty. For Technical Information and Automated Fax Service, call 800-527-1953. A.O. Smith Corporation reserves the right to make product changes or improvements without prior notice.