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Title: Not for a beginner!
Review: The 4 gal Artiston was shipped without a manual, so I had this water-heater installed by a pro-plumber and had to pay for his time, of course. It turned on - but never supplied hot or even warm water. Now I have to send it back - what a hassle! I just read in a consumer review that the main problem might be the of setting an internal thermostat...how and by whom? This is not a product for me!
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