Building a Foam insulated house (very tight), so indoor air quality is a concern. The Foam insulator insist on a ventilator (HRV, ERV)

The concern is a build up of humidity in the winter when the house is closed up tight for 5 months.

Currently an Aprilair ERV is being installed, but reading about them (aprilair ERV), They transfer the heat AND humidity to the incoming air in the winter time, thus retaining indoor humidity.

The Carrier ERV lit. states that it's core will, remove indoor humidity in the winter AND remove humidity from the fresh incoming air in the summer.

Is this possible ? I though an ERV transfered the humidity from the high to the low, no matter what.

But it sounds like the carrier acts as an HRV in the summer, and an ERV in the winter.

Any thoughts ?