A loan, advance of credit, or purchase of an obligation representing a loan or advance of credit made for the purpose of financing improvements or additions (including the refinancing of any indebtedness incurred in connection with the early commencement of work on such improvements or additions, subject to the requirements of §§242.15 and 242.45) to a hospital covered by a mortgage insured under this section of the Act or for a Commissioner-held mortgage, or equipment for a hospital, may be insured pursuant to the provisions of section 241 of the Act and under the provisions of this part as applicable and such additional terms and conditions as established by HUD. See subpart B of 24 CFR part 241 with respect to the contract of mortgage insurance for all loans insured under section 241 of the Act. See 24 CFR part 241, subpart C, for energy improvements.