Quote:
Originally Posted by scottorious
just called rheem. they said that the unit will only come on if there is a 35 degree difference in the water temperature. So if I have 100 degree water coming into the tankless heater the unit will only start if it is set at 135 degrees.
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I think you totally misunderstood them.
I just got off the phone with them myself.
If your incoming water was at 100 and you had the tankless set to output water at 135 then the tankless will only have to heat the water 35 degrees. It will only turn on 1 of three gas heaters to accomplish this. The colder the water the more heat needed to heat it to the set temp.
If the incoming water is hotter than what you have the tankless set at, then it will not turn on.
This tankless actually has a flowmeter to control the flow of water to keep it at the set temperature. So if someone flushes a toilet or turns on a faucet it will automatically adjust the flow to keep the water at same temp.
I asked if it can sense the incoming water temp. She said it does.