linking auxiliary ventilation to HRV in building template manager

[p1234567]

Hi,
How can I link the auxiliary ventilation rate in building template manager to the HRV. is it by assigning the temperature for the auxiliary ventilation flow instead of external air (adjacent ) in the air exchange in building template manager?
if yes, what would the temperature be assigned to be? as the external fresh air is warmed by the air extracted from toilets and kitchens and then thrown inside the rooms. this wont happen at all times as for some times the fresh air would be warmed by internal room temperature.
what temperature would be assigned for HRV?
thank you