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 ANSI American National Standards Institute ASHRAE
IEER
Integrated Energy Efficiency Ratio
in
Inches
IPLV
Integrated Part Load Value
kW
Kilowatts
kWh
Kilowatt-hours
American Society of Heating, Refrigerating and Air Conditioning Engineers Boiler Horsepower (also Brake Horsepower – see definitions in Glossary section)
LP
Liquid Petroleum or Propane
MBh
1,000 BTUh Manufacturer
BHP
Mfr. NC NG
BTU
British Thermal Units
New Construction
BTUh
British Thermal Units Per Hour
Natural Gas
CFM
Cubic Feet Per Minute
O 2
Oxygen
CO
Carbon Monoxide Carbon Dioxide
OA
Outside Air
CO 2 COP
PPM PSC psia psig
Parts Per Million
Coefficient of Performance Computer Room Air Conditioner
Permanent Split Capacitor
CRAC
Pounds Per Square Inch Absolute Pounds Per Square Inch Gauge Packaged Terminal Air Conditioner Packaged Terminal Heat Pump
DB DC
Dry Bulb
Direct Current
PTAC PTHP
DCV DHW DOE
Demand Controlled Ventilation
Domestic Hot Water Department of Energy
RA
Return Air
RTU
Rooftop Unit
DX EA
Direct Expansion
SA
Supply Air
Exhaust Air
SCFM SEER
Standard Cubic Feet Per Minute Seasonal Energy Efficiency Ratio
ECM EER
Electronically Commutated Motor Energy Efficiency Ratio Efficiency or Effectiveness Energy Management System
sq ft
Square Feet
Eff.
TE
Thermal Efficiency
EMS Enth ERV
Therm T-Stat
100,000 BTU Thermostat
Enthalpy
Energy Recovery Ventilator
UEF VFD VSD
Uniform Energy Factor Variable Frequency Drive Variable Speed Drive Water Source Heat Pump
Ft
Foot or Feet
GPM
Gallons Per Minute
HP
Horsepower
WSHP
HRV
Heat Recovery Ventilator
wk
Week
HSPF HVAC
Heating Seasonal Performance Factor Heating, Ventilation and Air Conditioning
Δ
Delta or Difference
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