Ao-smith CMC/SU-54 User Manual

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PG 1 OF 4
August 2009R
AOSCE15700
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 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
®
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 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
®
(Optional)
MODELS
CMC/SU-6
through
CMC/SU-54
December 2012R
252507_AOSCE15700.indd 1252507_AOSCE15700.indd 1 12/7/12 9:40 AM12/7/12 9:40 AM
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Summary of Contents

Page 1 - CMC/SU-54

PG 1 OF 4August 2009R AOSCE15700Commercial Electric Water HeatersDURA-POWER180°F BOOSTER MODELSDura-Power® commercial electric water heaters are de

Page 2 - AOSCE15700

Commercial Electric Water Heaters®PG 2 OF 4www.hotwater.com AOSCE15700POWER-CIRCUIT FUSING FOR SYSTEM PROTECTION Safeguards elements and contactors f

Page 3 - SU MODELS

PG 3 OF 4www.hotwater.com AOSCE15700Commercial Electric Water Heaters®CMC MODELSSU MODELSINPUT CAPACITY AND RECOVERYMODEL NUMBERSTANDARD kW INPUTGPHOR

Page 4

SUGGESTED SPECIFICATIONThe water heater(s) shall be A. O. Smith Dura-Power Model(s) CMC/SU _____ rated at _____ kW, _____ volts, _____ -phase, 50/60 c

Related models: CMC/SU-6

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