Wire the thermostat’s (G) output to the ERV/HRV enable signal and the PEARL’s (A1) output to modulate the ERV/HRV with its 0(2) – 10 VDC signal.
Note: In this configuration the ERV/HRV wheel will increase both during Demand Ventilation cycles and Economizer cycles. You can always disable Economizer or Demand Ventilation from the web-app if you do not want that sequence to play a factor in controlling the ERV/HRV.