PERFECTIMM: Introduction to Rooftop Units 2.0
Pre-Test Operation Overall System Normal Setting Overall System Compressor Condenser Expansion Valve and Evaporator Maintenance Overall System Compressor Condenser Expansion Valve and Evaporator Troubleshooting Warning Air-Conditioned Area Too Hot Air-Conditioned Area Too Cold Compressor Short Cycling Abnormal Compressor Noise Evaporator Icing Energy Efficiency Overview Summary of Energy Efficiency Measures Reduce Operating Time Optimize the System Operating Schedule Optimize Control Settings Reduce Electrical Demand Optimize Superheat Setting of the Expansion Valve Prioritize Specific Maintenance Tasks Clean the Condenser Coil Optimize the Refrigerant Charge Maximize the Air Flow Reduce Radiant Heat System Retrofit Modify the System to Operate in Free Cooling Mode Detailed Descriptions Pressure-Temperature Tables Post-Test Detailed Descriptions Air-Cooled Condenser Direct Expansion Liquid Cooler Direct Expansion Air Evaporator Semihermetic Reciprocating Compressor Hermetic Scroll or Reciprocating Compressor Adjustable Thermostatic Expansion Valve Pressure-Temperature Tables R-11 R-12 R-22 R-123 R-134A Safety