I am installing a Eco 8 240v 40A unit. This unit will supply one single sink. The engineer shows this device in the bathroom adjacent to the sink exposed with seems like a bad idea for aesthetic purposes especially if there needs to be a disconnect located in the same room. That is my question, does this unit require a disconnect right next to it? I assume the requirements would be within 50' and within eyesight. Any enlightenment would be appreciated.