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DeRenzy
Explorer
Jun 13, 2015

Atwood GE 16-EXT -- Help with two open tubes on back

Just received a new Atwood GE 16-EXT (10 gal gas/elect) hot water heater which is identical to my 10 year old one EXCEPT it has two non-threaded, horizontal, aluminum tubes (1/2" ID & 5/8" OD), sticki...

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