Whirlpool Residential Electric water heater Specifications download pdf (Page 25)

RESIDENTIAL ELECTRIC WATER HEATER

SERVICE HANDBOOK

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Technical Training Department 24 of 36 Residential Electric Svc Handbook

Miscellaneous Residential Electric Water Heater Service Items:

• Watts divided by Volts = Amps

Supply wire gauge and fuse (breaker) protection must be at least 125% of the expected

Amperage draw of the water heater.

• Volts times Amps = Watts

Replace elements with elements rated at the same wattage and voltage indicated on the

water heater model and rating plate. Installing an element with a higher voltage rating or

wattage output may create a safety hazard by overloading the water heater wiring or supply

wiring or fusing. Installing an element with a lower wattage or voltage rating will reduce

performance.

• Normally, a residential electric water heater with two elements will have only one element

operate at a time. If the upper element or thermostat fails, the customer will be out of hot

water. If the lower element or thermostat fails, the customer should still have 1/3 of the

tank with hot water.

• With a two element water heater, the lower element and thermostat will cycle more

frequently than the upper element and thermostat. For this reason, the lower element will

normally accumulate lime faster and fail more often than the upper element. Lower

thermostats will fail more often than upper thermostats.

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Whirlpool Residential Electric water heater Specifications Page 25