Conn. Gen. Stat. § 45a-535c
(a) Subject to the intent of a donor expressed in a gift instrument, an institution may appropriate for expenditure or accumulate so much of an endowment fund as the institution determines to be prudent for the uses, benefits, purposes and duration for which the endowment fund is established. Unless stated otherwise in a gift instrument, the assets in an endowment fund are donor-restricted assets until appropriated for expenditure by the institution. In making a determination to appropriate or accumulate, the institution shall act in good faith, with the care that an ordinarily prudent person in a like position would exercise under similar circumstances and shall consider, if relevant, the following factors:
(c) Terms in a gift instrument designating a gift as an endowment or a direction or authorization in the gift instrument to use only “income”, “interest”, “dividends” or “rents, issues or profits”, or “to preserve the principal intact”, or similar words:
(P.A. 07-91, S. 31.)