Rhemm Thermostat ro nest 4th generation - Wiring help

[Jay74]

Hi All. I recently moved to a new home that has a Rheem furnace, HVAC unit with furnace and AC (and a whole home humidifier/de-humidifier controlled v separate humidistat).

The thermostat is an Econet device. There are 4 wires being run in R, C, E1 and E2. I want to replace this by my Nest Thermostat E without loosing any functionality. Is that possible? I know about R and C but what do I do with the E1 and E2 which control the humidifier? Should I schedule a Pro installation. I want to do so only if my system is compatible y re-wiring etc. If not I don't want to pay the extra 159 $ for just they telling me it is not compatible. 

[CoolingWizard]

@Jay74 ,

if you are trying to replace that Rheem EcoNet smart thermostat with a nest? You’re going to have a little bit of a problem. The E1 and E2 wires are communication wires and that’s how the Eco net smart thermostat talks to the outdoor units and the air handler. Having Said this if you have a thermostat cable with 5 to 7 wires? It may be possible to rewire this to work in a conventional manner. You are going to have to double check. Your Rheem air handler verify that it has the ability to support conventional HVAC controls.  When you get a moment, get me the model number of the air handler and I can look it up for you.  

AC Cooling Wizard