Question about Rheem Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm
Posted by Anonymous on
Easy answer is you cant on these units. These tankless units store no hot water and need a 240V power supply to operate.
In some areas in far north Queensland I came up with a back up power unit (I used to work for Rinnai who make similar units). These were for remote units that used battery lighting and just wanted a bit of hot water for remote workers.
Basically you need a spare car batttery and an electrical inverter or a back up petrol generator. These hot water units only use a very small amount of electrical power even when that are operating. I had a guy run the hot water for nearly two weeks on a car battery and inverter after cycone Larry hit Innisfail in North Queensland.
Depends how often you get power losses as to how much money you want to spend to cover yourself (99.9999% don't bother with no real hassles).
Posted on Aug 01, 2010
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Posted on Jan 02, 2017
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