i know at least some of this has been covered. i want to have my boiler controlled by my arduino board. first i want it to be able to turn the draft fan on and off based on stove temp and pump as well. i also have a lcd display with buttons, i would like it to display the water in temp, water out, flue and if the boiler is running the fan. also if i could change the temps with the buttons would be nice. im not worried about data logging. one other thing i would like is a start up mode which when i pressed a button it would run the fan and pump together until 5 mins of time passed or if boiler got up to temp. ive seen some other ideas like this online but nothing exact. any one have experience with this?