I want to install a Grundfos recirc pump on a 83 gal water heater that has a power vent on it. The pump would be installed on the hot water side and be plugged into a 110v outlet. My main question is would I have to shut down the power vent system (unplug it) and would something have to be reset when I am finished installing the pump. I would also install the manifold under the sink the longest distance from the heater. The pump has a 10' cord but the nearest double outlet is more than 10' away. Can I replace the single 110v outlet that provides power to the power vent with a double outlet so that I have power available for the recirc pump. Any help would be appreciated.