Hey there, and thanks in advance for any tips. I recently remodled my bathroom with a buddy and one thing we had to do was drain the heating system/boiler to pull out a radiator while redoing the floors. Now it's time to re-install, but I'm not sure exactly how to refill the system. We have (obviously) a furnace in the bsmt. that has a valve connecting it to our cold water pipes. I can open the valve, but how much goes in? Is there some kind of automatic shutoff/pressure relief? And then once we get some water in and can turn on the boiler, I believe water must travel up to all the radiators in the house. This would mean getting more water in the system, right? Can you help, or do I need to turn the problem over to the local experts? BTW, we have an old oil furnace (American Radiator Co. No. 7 Ideal Boiler) that still goes strong when operating.