Fantech ATMO ERV + Ecobee

[NomadEng]

I have a Fantech ATMO 200E ERV and the latest Ecobee Premium with Voice. I'm trying to determine the best way to wire the ERV so my Ecobee can control it. My setup includes three zones, each with its own Ecobee (one on each level). Currently, I have a humidifier wired to each accessory terminal.

After researching online, it seems I could connect both the ERV and humidifier using PEK+ based on this reference:
https://www.hvactechgroup.com/hvacforum/index.php?topic=4100.msg13574#msg13574


However, when looking at the wiring diagram for the Fantech ATMO 200E, I'm confused about which output to use to send the signal to the Ecobee. Could anyone clarify this for me or point me in the right direction? I do not see W R G Y outputs on the board.



Thanks in advance for your help!

[Admin]

You will have to switch your humidifier to 1 wire configuration and connect it to PEK+ terminal.  That will send 24V down to the humidifier.  Connect your other humidifier wire to the C terminal in the furnace.  See attached wiring diagram.

Then connect your ERV D+ and D- to the Ecobee ACC+ and ACC-, as a 2 wire configuration.

You will have to reconfigure the Ecobee equipment settings in Pro Installer mode.

The W, R, G, Y terminals are referencing the interlock to the ERV NO, C, NC terminals.  You don't need to do this because the Ecobee will interlock the furnace fan for you.

[NomadEng]

You will have to switch your humidifier to 1 wire configuration and connect it to PEK+ terminal.  That will send 24V down to the humidifier.  Connect your other humidifier wire to the C terminal in the furnace.  See attached wiring diagram.

Then connect your ERV D+ and D- to the Ecobee ACC+ and ACC-, as a 2 wire configuration.

You will have to reconfigure the Ecobee equipment settings in Pro Installer mode.

The W, R, G, Y terminals are referencing the interlock to the ERV NO, C, NC terminals.  You don't need to do this because the Ecobee will interlock the furnace fan for you.

Thank you so much! This is exactly what I needed.

[NomadEng]

You will have to switch your humidifier to 1 wire configuration and connect it to PEK+ terminal.  That will send 24V down to the humidifier.  Connect your other humidifier wire to the C terminal in the furnace.  See attached wiring diagram.

Then connect your ERV D+ and D- to the Ecobee ACC+ and ACC-, as a 2 wire configuration.

You will have to reconfigure the Ecobee equipment settings in Pro Installer mode.

The W, R, G, Y terminals are referencing the interlock to the ERV NO, C, NC terminals.  You don't need to do this because the Ecobee will interlock the furnace fan for you.

I wanted to follow up and see if you had some additional suggestions for me. I currently only have 2 extra wires ran to my ecobees. It would be quite a challenge to run an additional wire. With that said. Do you know of any way to run the ERV with only 1 wire if I use the second wire for my humidifier?

[NomadEng]

thinking something like this, will it work?