Conn. Gen. Stat. § 52-220: Hearing in damages: When to jury.

In any action at law in which the defendant suffers a default and there is a hearing in damages, the hearing in damages shall be to a jury of six if either party to the action, within thirty days after the default has been entered, files with the clerk of the court in which the action is pending a request in writing that the hearing in damages be to a jury.