09-28-2011, 08:33 PM
I went to a service call for "banging from the basement". The 15 year old dry base was in such bad shape, I could not tell what brand it was. Everything was leaking on this boiler. I was looking into replacing the unit, and came across two manually mixed zones. The pipes went up into the attic, 3/4 inch K copper, with 1/2 inch copper tubing branches that went out into the plaster of the ceiling. The pumps were these old tacos that has a sight glass of some sort on the rear. I could not get any numbers off the pumps due to corrosion, so my rep told me to put a taco 00R on each zone. Anyone have any experience with ceiling heat?? We are going to do the job in stages, boiler, manifolds, circs, etc now. Underground oil tank removal in the spring, the deal with putting some heat in the floors in the fall. I would like to reuse my circulators and mixing valves when we redo the radiant. Does anyone know what temp I should be sending out to the ceiling? Thanks for any help you can give.