Section 12-104 - Contracts and sales practices1. Every agreement for the sale or installation of a solar thermal system shall be in writing and be subscribed by the seller or installer, or his lawful agent, and by the customer or his lawful agent.2. Every such agreement shall contain or have annexed thereto: (a) The name and address of the system manufacturer of the solar thermal system together with the system's name and model number;(b) Operation, maintenance and installation instructions, except that installation instructions need not be provided in an installation agreement;(c) Copies of all express warranties provided to the customer; and(d) Other such information as may be required by the commissioner.3. Every such agreement shall display the following statement on the face of the agreement in a clear and conspicuous manner: "No specific thermal performance for this solar system is warranted unless stated herein".4. No seller shall offer for sale a solar thermal system unless such seller makes available to a prospective customer the information specified in subdivisions two and three of this section.