(a) Application of Chapter. The provisions of this chapter shall govern the installation, alteration, replacement and repair of heating, ventilation and air conditioning systems. When alterations or additions are made to existing systems, the provisions of this chapter shall apply to the new work and systems.
(b) Qualified Installers. All heating, ventilation and/or air conditioning installation and alterations shall be done under the direct supervision of installers, licensed or authorized to do such work under the applicable provisions of this Building Code relating to registration, licensing and certificates of qualification.
(c) Permits. Except for minor repairs or adjustments, no heating, ventilation or air conditioning system shall be installed, modified or supplemented without obtaining a permit therefor.
(d) Drawings, Layout and Design Data. Before a permit is issued for the installation or alteration of a heating, ventilation or air conditioning system, the applicant shall submit engineering drawings, with layouts and design data, to the Building Inspector. The drawings and design data shall be sealed by a mechanical engineer registered in the State of Ohio.
(1) Design of the heating, ventilation and/or air conditioning system shall be in accordance with accepted engineering practice. The load calculations for heating and air conditioning are to be based upon expected occurrences of outside temperatures, relative humidity and wind velocity that occur at the building location. The temperature and relative humidity occurrences at the building location may be at variance with those published in the ASHRAE Handbook of Fundamentals and the ASHRAE Heating and Cooling Load Calculation Manual (refer to Appendix A).
A. The system shall be designed to maintain uniform indoor temperatures and humidity levels to provide a proper comfort level for the occupants at outdoor design-day conditions.
B. The system shall be zoned or divided and controlled in a manner to accommodate significant variations in thermal performance of various spaces within the building.
C. The selected equipment output capacities shall be based upon the thermal requirements necessary to maintain uniform conditions at a proper comfort level based upon usage, and shall include allowances for equipment and system efficiency and thermal losses in the distribution system, and shall have the capability to return space temperature to a normal thermostat setting from setback at outdoor design-day conditions within a reasonable period of time.
D. The ventilation system shall be designed to provide ventilation required for occupancy and usage, and shall have the capacity to prevent negative pressures from occurring in the space of sufficient magnitude to adversely affect the operation of combustion equipment or fireplaces.
(2) The system design and equipment selection shall be in accordance with accepted engineering and safe practice. Safe practice criteria shall comply with the standards and recommendations of the appropriate organization and codes listed below.
(e) Codes, Standards and Engineering Practices. The equipment, materials, installation requirements, design and engineering practice shall be in accordance with appropriate sections of the latest edition of the codes and standards listed and/or referenced herein, except as qualified or where other requirements are stipulated in this Building Code. The qualification or requirements within this Building Code shall take precedence over the referenced codes or standards. Codes and standards that are to be considered as being incorporated into this Building Code shall be as follows:
(1) Referenced Codes (refer to Appendix A); and
(2) Referenced standards of organizations for manufacture and/or engineering practice (refer to Appendix A).
(f) Materials and Definitions. Definitions of terms shall be in accordance with the latest edition, Part IV, Chapter 10, "Mechanical - Materials and Definitions" of the CABO One and Two Family Dwelling Code (refer to Appendix A) and Article 2 [OAC 4101:2-34] of the Ohio Basic Building Code (Mechanical) (refer to Appendix A).
(1) Standards for materials as listed in the CABO One and Two Family Dwelling Code, Chapters 10 through 19, where applicable, shall be considered a part of this Building Code (refer to Appendix A).
(2) Standards for materials as listed in the mechanical section of the Ohio Basic Building Code, including the standards referenced, where applicable, shall be considered a part of this Building Code (refer to Appendix A).
(3) All materials and components incorporated into the equipment or system shall be of high quality and appropriate for the application.
(4) Materials shall either be new or used. Where used materials are applied, the same shall be fully restored to equivalent items of new quality, and the restored materials shall be subject to the approval of the Building Inspector. (Ord. 1992-101. Passed 1-14-92.)