I am trying to replace an aprilaire 760 model with the new 700. The first one I tried was a 700m but it was defective. I have since returned and had to move to the 700 with automatic humidistat (other w out of stock). Before I go through installation I want to check the operation of the unit. Can I expect that the fan will operate by just plugging in the unit and touching the two brown wires coming from the unit together or does the unit need to be fully installed? This used to work with the 760 models. I do not want to cause issues with the new unit if this is not possible. Thanks.