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Expansion tank for antifreeze
Does anyone know if there is a special type of heating expansion tank I'm supposed to use for a system that has antifreeze in it? I Have a system that just burnt through an expansion tank in 6 months. Then antifreeze mixture is about 50% and I have been using Amtrol EX30 tanks.
Amtrol makes a solar and a radiant tank but my supplier doesn't have them in stock and I'd hate to spend the extra money if it isn't needed. I'm reluctant to use the radiant tank as the specs state that the max temp is 200 degrees. Since this is partly a baseboard system, the temps get very close to that? The Solar tank looks like an option as it states it can go to 250 degrees and is rated for glycol.
My second question is. Have I been installing the wrong expansion tank on antifreeze systems all these years? I have always used the Amtrol EX30s and haven't had a problem.