| it's a 0066b little guy. it's really secondary heat, old house been added on to a number of times, so I installed additional vents to an existing hvac system to heat and cool the whole place except for 2 rooms at the far end of the house. I still have baseboard in a lot of the other rooms, but as I said its really secondary to those locations. according to the raypack manual it states when the total system head exceeds the available head pressures, a primary/secondary pumping system is recomended. So I'm guessing thats not a secondary pump, but will entail something much more involved? again it seems to work fine as is. water flows thru the main 1" piping back to the boiler. do not have noise problems, no groaning or popping or sound of rushing water, Just can't seem to get it to flow up into the radiators, perplexing thing is, it used to, the B&G 100 thats on this boiler I installed on the old boiler (same model) 6 or 7 years ago when the original pump failed, I did have a little flow problem back then, had to Bleed the baseboard boards both running and off, but after a few days they started flowing and all was fine. couple of years later the tubes in the boiler calcified. had to disassemble the boiler and clean them out, as per raypacks instructions, worked fine for a few more years, then it began to leak, probably a seal, since the unit was 16 years old at that point, and since I'm in a related business(i can buy these things at wholesale ) I just replaced it. according to raypacks website it doesn't appear the operating characteristics have changed over the years, but I just can't get this one to flow into the rads, making me crazy. probably gave you too much info too? sorry  |