Disconnecting domestic hot water coil

[daves]

I have decided to abandon my oil fired boiler domestic hot water coil for my hot water usage but could use some clarification. I will be installing a 50 gal electric water heater. i am a diy'er and need advise on how to handle the coil. i have read on some internet sites not to leave the coil in the boiler. i really do not want to try to remove it. is this process as simple as cutting the inlet and outlet of the coil, making sure there is no water in the coil and then capping them, reroute the lines to the electric water heater, or am i overlooking something?? what are the cons of leaving the coil in the boiler?? i do know i will have to do something with the aquastat- which i will research further the closer i get to the project. any advise is appreciated. Thanks.

[jadnashua]

This is discussed more than once, so a little search should answer your questions. Today, the boiler keeps the water hot enough to allow the system to heat your domestic hot water supply. You don't need it to stay that hot any longer once you reroute the water to the WH. But, depending on the design of the boiler, there may be a minimum temp it needs to run during the heating season (and you could probably shut it down until then) to prevent damage to the burner. If the water is allowed to get too cool, if the boiler isn't designed for it, you'll get condensation, and that can eat it up quickly.