radiantn heat

hr

A 4500 watt element would give you about 15,300 BTU/hr. It may not be code acceptable for this use, and use it ONLY as a closed loop system, not to be tied into the potable (combo system) or without backflow preventer protection.

That being said, I have done dozens of electric tank systems from 2-1/2 gallon POU to 50 gallon dual element 9KW systems. I like to add an additional 30 lb relief valve with the factory supplied, or installed, T&P for extra piece of mind :)

Personally I feel these tanks exceed most boilers for pressure requirements. Most HW tanks are tested to 300 psi and rated at 150 psi. All have several safety mechanisms from gas valves to ECO devices AND pressure and temperature relief valves.

They are missing the ASME listing, however, as they test to ANSI standards, I believe. Although most small condensing boilers are without ASME listing also :)

hot rod

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chaz_3

hot water heater for radiant heat

I have a radiant system using pex tubing in concrete with a BTU load 0f 15,000. I would like to know if i could use a electric hot water heater for my source.

Weezbo

Howdy Chaz. i have a tool that is basically an electric H2O

with a couple large elements in it , it works reasonably well.so the one side of the answer is yes it Can be done. other thing is though ,is it approved in your area of the country for that purpose and if so are there any specific requirements of the type of ratings on the water heater,relife valves,backflow prevention ,and a group of minor technicalities...