HVAC/DFT Terms
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ACD
Air Control Damper
ACFM
Actual Cubic Feet per Minute
Example: Measurement (Airflow)
AGA
American Gas Association
More Info: http://www.aga.org/
AHU
Air Handling Unit
AIHA
American Industrial Hygiene Association
More Info: http://www.aiha.org
AMCA
Air Movement & Controls Association
More Info: http://www.amca.org/
ANSI
American National Standards Institute
More Info: http://www.ansi.org/
ARI
Air-Conditioning & Refrigeration Institute
More Info: http://www.ari.org/
ASHRAE
American Society of Heating Refrigeration and Air Conditioning Engineers
More Info: http://www.ashrae.org/
ASTM
American Society of Test and Measurement
More Info: http://www.astm.org/
AWG
American Wire Gauge
BMS
Building Management System
BOCA
Building Officials and Code Administrators International
More Info: http://www.iccsafe.org/
CE
Compliance European
CES
Commercial Environmental Systems
CFM
Cubic Feet per Minute
Example: Measurement (Airflow)
CGA
Canadian Gas Association
More Info: http://www.cga.ca/
COP
Coefficient of Performance
CSA
Canadian Standards Association
More Info: http://www.csa.ca/
DB
Dry Bulb Temperature
Example: DB Temperature
DDC
Direct Digital Controller
DFT
Demand Flow Technology
DOAS
Dedicated Outdoor Air Solutions
Dx
Direct Expansion
Example: Dx Coil
EATR
Exhaust Air Transfer Ratio
ECM
Environmental Control Module
EER
Energy Efficiency Ratio
EMC
Electromagnetic Compatibility
ERV
Energy Recovery Ventilator
ETL
Electrical Testing Laboratories
FLA
Full Load Amperes
FMS
Flow Measuring Station
FOB
Free On Board
Example: Stands for freight being prepaid from a specific destination (FOB Saskatoon)
HEF
High Efficiency Filter
HOA
Hand/Off/Auto
Example: Hand/Off/Auto Control
HP
Horsepower
HRV
Heat Recovery Ventilator
HVAC
Heating, Ventilation, & Air Conditioning
IAQ
Indoor Air Quality
ICBO
International Conference of Building Officials
IPC
In Process Change
IPK
In Process Kanban (DFT Term)
ITS
Intertek Testing Services Ltd
LAT
Leaving Air Temperature
LC
Light Commercial
LEED
Leadership in Energy & Environmental Design (United States Green Building Council)
MCA
Minimum Circuit Ampacity
MEF
Medium Efficiency Filter
MOP
Maximum Over-Current Protection
NBCC
National Building Code of Canada
More Info: http://www.nationalcodes.ca/nbc/index_e.shtml
NFPA
National Fire Protection Association
More Info: http://www.nfpa.org/
NRC
National Research Council
More Info: http://www.nrc.ca/
OACF
Outside Air Correction Factor
OMS
Operation Method Sheet (DFT Term)
OSHA
Occupational Safety & Health Administration
Example: U.S. Department of Labor - Occupational Safety & Health Administration
RH
Relative Humidity
Example: Percent RH
RTU
Roof Top Unit
SBCCI
Southern Building Code Congress International
More Info: http://www.iccsafe.org/
SCFM
Airflow rate moved at standard conditions
Example: Measurement (Airflow) 0.075 lbs/ft^3 70F sea level pressure 29.92 in Hg
SEER
Seasonal Energy Efficiency Ratio
SI
System International
Example: Measurement (Metric)
SOE
Sequence of Events (DFT Term)
SRC
Saskatchewan Research Council
More Info: http://www.src.sk.ca/
SWF
Standard Washable Foam
TQC
Touch Quality Control (DFT term)
Tx
Thermal Expansion
Example: Tx Valve
UL
Underwriters Laboratories Inc.
ULC
Underwriters Laboratories Canada
VFD
Variable Frequency Drive
VHC
(Venmar CES Product Line) Ventilation, heating and cooling
VRC
Variable Refrigerant Control
VSD
Variable Speed Drive
WAM
Web Account Manager
WB
Wet Bulb Temperature
Example: WB Temperature
WG
Inches of Water Gauge