3.__License certificate.__All persons licensed by the board must receive a license certificate that must be publicly displayed at the principal place of business of the licensee, if any, and a pocket card license that must be carried on the person and displayed at any time upon request.

§15331.__Rules

The board may adopt reasonable rules for the issuance of various types and classes of licenses to cover heating, cooling and air distribution equipment installations, alterations and repairs and to set forth standards and rules for product approval.__A license may cover one or more types of installations.__The board may further adopt reasonable rules concerning the term and type of experience required by candidates for examination.__Rules adopted pursuant to this section are routine technical rules as defined in Title 5, chapter 375, subchapter 2-A.

§15332.__Fees

The Director of the Office of Licensing and Registration within the Department of Professional and Financial Regulation may establish by rule fees for purposes authorized under this chapter in amounts that are reasonable and necessary for their respective purposes, except that the fee for any one purpose may not exceed $350 biennially.__Rules adopted pursuant to this section are routine technical rules pursuant to Title 5, chapter 375, subchapter 2-A.

§15333.__Examinations

1.__Application for examination.__An applicant for a master or journeyman heating, cooling and air distribution technician license shall present to the board a written application for examination containing such information as the board may require, accompanied by the prescribed fee.

2.__Form; content.__Examinations must be in whole or in part in writing, must be conducted by the board and must be of a thorough and practical character commensurate with the responsibilities of the type of license applied for.__ Examinations may include questions on the rules of the board and any standards and codes as may be applicable to the installations and the equipment.