A.O. Smith CMC/SU-6 User Manual
PG 1 OF 4
Revised October 2008
AOSCE15700
Commercial Electric Water Heaters
dura-power
180°f booster models
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.
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 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)
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
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
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
(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
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
Eliminates need for 120V service connection
Certified to NSF/ANSI 61
(Optional)
MODELs
cMc/su-6
through
cMc/su-54