Viessmann 222-F boiler Tstat wiring Question

NNYSportsman

Hi, I have a Viessmann 222-F Model B2TB 125 Boiler that I had installed in April 2020. It's been a great boiler with no issues. I currently have two circulating pumps, each for an in-floor radiant heat zone and they each have their own thermostat and these are working fine. I recently purchased the AM1 extension module, since I want to add two more circulating pumps for two new in floor radiant heat zones that I want to add.

The manual pages shown below indicate the AM1 would allow two more pumps to be added.

My question is, does anyone know where I can connect two new thermostats, since there are only a total of (3) dry contacts at the boiler DE1, DE2 & DE3 connections and I don’t see a Tstat connection point on the AM1 module itself ? I have emailed Viessmann a few times over the last month asking this question and I haven't been able to get a response yet.

Thanks !