GLOSSARY
Acronyms, abbreviations, and technical terms used throughout this catalog are defined below. ACRONYMS AND ABBREVIATIONS A/C Air Conditioner AHRI Air Conditioning, Heating, and Refrigeration Institute AHU Air Handling Unit ASHRAE American Society of Heating, Refrigerating, and Air Conditioning Engineers BHP Boiler Horsepower (also Brake Horsepower – see definitions in Glossary section) BTU British Thermal Units BTUh British Thermal Units Per Hour CFM Cubic Feet Per Minute CO Carbon Monoxide CO 2 Carbon Dioxide COP Coefficient of Performance DB Dry Bulb DC Direct Current DCV Demand Controlled Ventilation DHW Domestic Hot Water DOE Department of Energy DX Direct Expansion ECM Electronically Commutated Motor EER Energy Efficiency Ratio Eff. Efficiency or Effectiveness EMS Energy Management System Enth Enthalpy ERV Energy Recovery Ventilator Ft Foot or Feet hp Horsepower HSPF HVAC IEER IPLV kW Kilowatt kWh Kilowatt-hours LP MBh 1,000 BTUh Mfr. Manufacturer NC New Construction NG Natural Gas O 2 Oxygen OA Outside Air PPM Parts Per Million PSC psia psig PTAC PTHP RTU Rooftop Unit SCFM SEER TE Thermal Efficiency Therm 100,000 BTU VFD Variable Frequency Drive Δ Delta or Difference Permanent Split Capacitor Integrated Part Load Value
Heating Seasonal Performance Factor Heating, Ventilation, and Air Conditioning
Integrated Energy Efficiency Ratio
Liquid Petroleum or Propane
Pounds Per Square Inch Absolute Pounds Per Square Inch Gauge Packaged Terminal Air Conditioner Packaged Terminal Heat Pump
Standard Cubic Feet Per Minute Seasonal Energy Efficiency Ratio
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