Weil-McLain AHE

Alan(CaliforniaRadiant)Forbes

circulator that comes with the boiler has an integral mixing valve so that the boiler does not see cold return water. We just installed an AHE-60 and this mixing valve seems stuck and will not circulate into the primary loop. The boiler turns off on operating limit and the return pipe is still cold.

I don't think it's an air problem since we've power purged the primary 'til we are blue in the face. We've also opened up the relief valve and air vent at the top of the HX.

The factory said to turn up the operating limit to 200° and let it run for an hour. Still doesn't work properly.

Any suggestions?

Stuck on the West Coast

Alan

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Mike Reavis_2

ahe

If it is brand new and it does not work, and there is another in stock at the wholesaler, then take it back. If not, it sounds as if the element or the pump has failed. Replace it with part number 511-405-008 (whole pump and assembly). The bypass element itself is part number 511-405-007.

Alan(CaliforniaRadiant)Forbes

West Coast

My supplier doesn't stock any AHE's or any parts for them.

Turns out my plumber just removed the guts to the bypass and piped in an external, pumped bypass. So far, it seems to be working.

Thanks for the help, Mike!

Best wishes,

Alan

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