Slantfin TR 30 with an Aquasmart controller, oil fired hot water system with a tankless [ thankless? ] coil hooked up to an aquabooster reservoir. Very happy with system. I have been moving the high limit up and down with changes in outdoor temp; very easy to do with the Aquasmart [ ie. poor mans ODR ]. I had it set at 180 hi and 15 diff when it was 9 degrees outside and we were nice and warm . Now that it is 35 out I am down to 165 and 15 diff. My question is do these numbers seem in the ball park and how low can I go? From what I read, with a non-condensing boiler 150 is about the min for the hi setting, and you also run into problems with the required spread between Hi and Lo. Am I on the right track?

Hi, I just recently bought a 2 family detached home. We renovated everything inside from the electric to the pipes to the walls, beams basically everything. The type of heating system we decided to use is in wall baseboard heater that uses water which run through the pipes heated up by Gas. Whenever the heat comes on on the 2nd floor, we hear poping, clicking and sometimes continuously banging sound. The sound happens to be isolated in one of the baseboard heater upstairs directly above our master room down stairs and the sound is so annoying I haven't been able to sleep for days. We ask the guy who installed the heating system and he said that it was normal because when hot water goes through the pipe the pipe expands therefore making the clicking sound. Which is true, however my understanding was that sound should only happen when heat is first turned on, once the heat is on, that noise should go away. and the sound should not be so continuous and loud. The other step we did was to bleed the water but we did that many time and it did not stop the sound. The next step I see is we have to knock down the wall to investigate the pipes?? Hoping you can give us an alternative. Please help. Thanks