The CHFA guidelines for condos are no longer used (I believe your comment above says that is what you were told). The CHFA lenders utilize the FHA approved condo list which can be found via the link below. Type in CT and your city name. Typically the FHA rules use the minimum 50% rule. However, there are other requirements.
The best thing to do is to run the condo by your lender to make sure that they can lend on that particular condominium project. In my area one of the condos, Riverbend, is not on the FHA list by its common name (there is literally a sign in front of the builing that says Riverbend), but in its bylaws it is known as Fairmont Condominiums, and it is FHA approved. No normal human being would know that, of course, so if you've found a place you really like, it's best not to make any assumptions, just ask your lender.
Please note that depending upon when you buy the FHA condo approval requirements are changing. See new FHA condo approval guidelines:
Let me know if you need more info.