Hot water heaters and antifreeze

Bruce

Iam building a small hot water radiant floor (concrete) system using a 6 gal.water heater as a boiler.My question is. I will be using propolene glycol 20-25%.Heating elements are copper with a galvinized or zinc coating.Dan's books say this is bad in a system using antifreeze.Is there a reason way they don't just leave them copper? can I remove the plating,or do I go to a s.s element.Thanks Bruce

hot_rod

Yank the anode, also

it may react with the glycol, and it is not needed in a closed loop system. (plus it frees up another port for a relief, gauge, air vent, stat well, or whatever)

The inhibitor package in the glycol will handle the small amounts of O2 from the blend water.

Yes, get a stainless or copper element, just to be sure. Chromolox make a wide variety of elements in voltage, wattage and material types.

hot rod