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Trane #2 direct return trap

is essentially a pump that works on steam pressure. It is there to make sure the water can return to the boiler if the boiler pressure gets higher than about a pound. If you use a Vaporstat on the new boiler- as you should- you can keep the pressure below that point. This type of system (Vapor) was designed to not need more than 8 ounces or so on the coldest day of the year.

But I'd leave the DRT in place, unless steam is blowing thru it into the dry returns. Nothing wrong with wearing a belt AND a pair of suspenders.


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