Whirlpool Residential Electric water heater Specifications download pdf (Page 6)

RESIDENTIAL ELECTRIC WATER HEATER

SERVICE HANDBOOK

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Technical Training Department 5 of 36 Residential Electric Svc Handbook

INSTALLATION - typical

Parallel Piping arrangement for multiple water heaters

ensures maximum hot water and efficient operation.

This piping arrangement

depends on dividing piping

between water heaters evenly.

It may be expanded for more

than two water heaters. Pipe

size may need to increase if

more water heaters are added

to improve water flow for larger

applications.

This balanced piping system is

preferred instead of a series

piping system where one water

heater feeds heated water to

the cold inlet of the second

water heater. A series

arrangement does not deliver

hot water as quickly or in as

great an amount as a parallel

piping arrangement.

Expansion tanks may be

required by local code. Water

expands by about 2% of its

volume as it is heated from

40°F. to 140°F. The

expansion created in a 40

gallon water heater would be

about 8/10 of a gallon.

A 2 gallon expansion tank will

absorb this amount of

expansion. For larger

applications consult the tank

manufacturers sizing

information.

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Whirlpool Residential Electric water heater Specifications Page 6