Conn. Gen. Stat. § 47-78: Owner may not exempt himself from liability.

(a) No unit owner may exempt himself from liability for payment of the common expenses by waiver of the use or enjoyment of any of the common elements or by abandonment of the unit against which the assessments are made, except if every unit owner is so exempted from the payment of all or part of the common expenses.

(b) A declarant shall become liable as a unit owner for payment of his share of the common expenses commencing on the day of the recordation of the original declaration and shall remain liable for his share of the common expenses, so long as the declarant owns a unit in the condominium.