Recent content by sam3b

I'e been trying to figure out a low temp DHW problem on a 10 year old boiler. I've replaced the right hand block, pump, diverter valve, DHW temp sensor, DHW plate heat exchanger, and flow turbine. I know there may be a scale issue on the main exchanger and I'm going to descale. But, I've found...

Seemed to be slowly getting worse after all the previous work. I put in a new diverter valve paddle and no improvement although the old one was really scaled.

Hi, Ten year old system that provides ~1500sq ft radiant heat and DHW. Heat side seems to work fine, but there is reduced DHW output. Essentially almost luke warm. I cleaned the main exchanger (the one with the burner) which was real bad. That helped some. I replaced the DHW temp sensor and DHW...