I am installing a new hot water heater in a new location. The old configuration tied into the furnace (oil fired, hot water baseboard). I would like to eliminate that loop but I am not sure what to do with the pipes that lead off to the boiler. Should I cut them close to the furnace (I would like to)? Should I cap the ends? My feeling is I should cut the pipes as close to the furnace as possible and then let them stay open. My concern is any water left in the loop will boil and build up pressure in the lines.

Any help is greatly appreciated.