Upon arrival disconnected the wires for the old aquastat and removed the aquastat. Installed new aquastat and hooked up the wires. Ran hot water in the bathroom tub until the water heater aquastat called for heat. Let the domestic water heat up and tested it at multiple fixtures around the house to verify the water temps. Had consistent water temps ranging from 121-124. Watched the unit cycle on and off 4 times total to check water temps. Unit is working g properly