A.O. Smith AOSRE50400 User Manual

Residential Electric Water Heaters

MEETS ENERGY-EFFICIENCY REQUIREMENTS FOR MOST ELECTRIC UTILITY
REBATE PROGRAMS

2-1/2"-thick CFC-free foam insulation, external heat traps and other energy-saving features
produce new, higher Energy Factors, which meets Energy Star Home Program recommendations
and Title 24 requirements.

A. O. SMITH DYNACLEAN™ DIFFUSER DIP TUBE

Helps reduce lime and sediment buildup, maximizes hot water output.
Made from long-lasting PEX cross-link polymer.

LONG-LASTING LOW-WATT DENSITY COPPER LOWER HEATING ELEMENT

Upper element is high-watt density copper.

COREGARD™ ANODE ROD

Aluminum anode with stainless steel core protects tank against corrosion
longer than ordinary mild steel anodes.

DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE

®

A. O. SMITH PERMAGLAS

Protects steel tank from rust.

GLASS COATING

FACTORY-INSTALLED SIDE-MOUNTED TEMPERATURE
AND PRESSURE (T&P) RELIEF VALVE

Top-mounted T&P Valve available as option on some models.

6-YEAR LIMITED TANK AND PARTS WARRANTY

For complete information consult written warranty or A. O. Smith Water Products Company.

UPGRADE TANK WARRANTY TO 10 YEARS

See details on page 2.

CODE COMPLIANCE: MEETS OR EXCEEDS FEDERAL MINIMUM ENERGY STANDARDS
ACCORDING TO THE LATEST EDITION OF THE NATIONAL APPLIANCE ENERGY
CONSERVATION ACT (NAECA). ALSO COMPLIES WITH ASHRAE 90.1-2004 AND
CURRENT EDITIONS OF ICC CODES AND HUD STANDARDS

CERTIFIED TO UL 174 FOR HOUSEHOLD ELECTRIC WATER HEATERS

Revised September 2008

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AOSRE50200

Residential Electric Water Heaters

DIMENSIONS IN INCHES

A B C

APPROX.

SHIPPING

WEIGHT

(LBS)

MODEL

NUMBER

FIRST
HOUR

RATING

GALLONS

ENERGY
FACTOR

GAL.
CAP.

ELEMENT WATTAGE

240 VAC

STANDARD MAXIMUM

RECOVERY

90ºF RISE

GALLON

PER HOUR

R

VALUE

TALL MODELS

ECRT-40 54 .93 40 4500 6000 21 20 60 19 53-1/2 120

ECRT-52*

ECRT-66

ECRT-80*

60 .93 50 4500 6000 21 20 56-1/2 21-1/2 47-1/2 135

76 .92 66 4500 6000 21 20 61 23 53 180

87 .93 80 4500 6000 21 20 61-1/2 25 52 210

SHORT MODEL

ECRS-50

Recovery capacity based on actual performance tests.
For 10-year tank warranty, change “E” to “P” in model number (PCRT-40).
* Models not available with top T&P Valve.

62 .93 50 4500 6000 21 20 49 23 40-1/2 155

CONNECTION

HOT

ANODE ROD

COLD
CONNECTION

8"

B

A

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.

Revised September 2008

www.hotwater.com

C

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AOSRE50200