A Method For Evaluating Diagnostic Protocols For Packaged Air Conditioning Equipment

Paper / February 6, 2013 / Advanced Buildings, Deep Energy Retrofits

Fault detection and diagnostic (FDD) tools are becoming more widely available for residential and light commercial air conditioning systems. The California Title 24 Building Energy Standard includes refrigerant charge and air flow diagnostic protocols and procedures, and energy efficiency programs have provided financial incentives for diagnostics-based HVAC equipment maintenance programs.

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Fault detection and diagnostic (FDD) tools are becoming more widely available for residential and light commercial air conditioning systems. The California Title 24 Building Energy Standard includes refrigerant charge and air flow diagnostic protocols and procedures, and energy efficiency programs have provided financial incentives for diagnostics-based HVAC equipment maintenance programs. The objective of this work is to address the need to know how accurate commercially available fault detection tools are by developing a methodology for evaluating the fault detection tool’s performance. Application software has been developed to run the evaluation methodology. This draft report describes the development of methods for evaluating the performance of a set of fault detection protocols for air conditioners.