HIDDEN HEAT LOSSES VIA THE CONTROL SYSTEM’S LOGIC CONTENTS SEVEN EXAMPLES OF SYSTEMS HIDING ENERGY LOSSES PAGE -5.38- Perimeter heat logic conflict between local control and BAS control. -5.39- -5.40- Zone damper positioning determining hot deck and cold deck temperatures. Perimeter water temperature co-ordinated with VAV requiring the least amount of cooling. -5.41- Unwanted heat input from fixed minimum fresh air duct with heating coil. -5.42- VAV cooling required compensating for control valve passing unwanted heat. -5.43- Over cooling via VAV with reheat coil. -5.44- Heating control valve compensating for defective VAV diaphragm or airflow controller. NOTE: The fact that the space is comfortable is not assurance of proper or logical control.
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