Nest Thermostat (4th Gen) and Energy Kinetics System 2000

[s2g]

I'm trying to figure out the wiring configuration for my heating system...it's an Energy Kinectics System 2000 . I have 4 separate heating-only zones.

Here is a picture of my zone controller - https://ibb.co/3hzDTKh

There are 4 wires spliced (R,Y,G, B) to each of the T terminals (t1, t2, t3, t4). There is then a white wire from the same splice to the A1 terminal. There is a separate spliced wire with a White going to A1 and Black going to A2. 

Since I have 4 zones, I believe I need 4 power connectors. Can someone advise on how to get this all configured correctly?

Thanks!

[zoeuvre]

Hi s2g, 

Thanks for posting here in the Community forum and for showing interest in our Nest Thermostats. Configuring the wiring for your heating system with multiple zones can be complex, and it's important to ensure the proper connections for safe and efficient operation. Are you located in North America or Europe? 

I'll look forward to your response. 

Best,

Zoe

[s2g]

North America 

[zoeuvre]

Hi there, 

Thanks for getting back to us. System with spliced wires is best consulted with our local HVAC professional and have them check if your system can be rewired to be Nest compatible.

Regards,

Zoe