concerning boiler/flue condensation

Guy_2

Hello all, HO here, been visiting this site since 98 but I have questions about low boiler temp and the resulting damage(s)of operating at a to low of return temp, but would also like to compare the possibilty of savings in fuel consuption(cost)by doing so anyways. This is my system setup: GE oil fired boiler reverse return gravity, oversized CI radiators, upgraded in 95 to new boiler and repiped in 98 to pri/secondary with system bypass and ball valves for balancing thanks to Dan's books, and reset control on system loop (secondary). I check often and clean the boiler when neccessary. Finally the question(s),1. After the system loop is satisfied from reset control, would running only the burner and pri pump untill the return temp reaches lets say 130deg, and then turn on secondary system loop to relieve standby loss and appropriate way to ward off condesation and save energy? 2. or just run burner with no circs till temp return temp reaches 130 at the end of heat cycle. 3. Just run at low temp and clean boiler and replace flue pipe when needed.