MitchM tank build

[MitchM]

In the sump I'm replacing my electric heaters with a coil of PEX that will be heated with a hot water recirc loop controlled with the Profilux.
There are plastic PEX fittings available for corrosive environments.

[Delphinus]

Interesting ... where would the water for the loop get heated?

[MitchM]

I tap into the hot water tank and run domestic water through it.
A 25W recirculation pump pulls hot water in a loop from the hot water outlet pipe and returns it to the cold water inlet pipe on the hot water tank.

So the heat comes from the normal operation of the hot water tank.

[ensquire]

What material are the pex rings made of ???

[MitchM]

Stainless steel

[MitchM]

I've learned that there's a different system available that uses plastic crimp rings - Propex.
I'm looking into that to see where it's available.

[DiverDude]

Other than the cost of buying a conventional heater (if you didn't already have one) and the (remote) possibility of the heater breaking, what's the advantage to doing it this way ?

Seems a bit of "Six of one, half dozen of the other"