%OA
Percentage Outdoor Air
IDU
Indoor Unit
%RA
Percentage Return Air
IEQ
Indoor Environmental Quality (LEED Related)
ABS
Acrylonitrile Butadiene Styrene
ISO
International Organization for Standardization
AC
Air Conditioner
IUCF
Indoor Unit Correction Factor
ACP
Advanced Control Platform
KTL
Korea Testing Laboratories
AHRI
Air-Conditioning, Heating, and Refrigeration Institute
LEED
Leadership in Energy and Environmental Design
ASHRAE
American Society of Heating, Refrigeration, and
Air Conditioning
LGAP
LG Air Conditioner Protocol
AHU
Air Handling Unit
MAT
Mixed Air Temperature
AWG
American Wire Gauge
MBh
Thousands BTUs per hour
BLDC
Brushless Digitally Controlled/Direct
MCA
Maximum Circuit Ampacity
Btu/h
British Thermal Units per hour
MFS
Maximum Fuel Size
CCR
Corrected Capacity Ratio
MOCP
Maximum Overcurrent Protection
CDOA
Coupled Dedicated Outdoor Air
MR
Materials and Resources (LEED Related)
CFM
Cubic Feet per Minute
NC
New Construction (LEED Related)
CI
Commercial Interiors (LEED
®
Related) Normally Closed
COP
Coefficient Of Performance
NEC
National Electrical Code
CR
Combination Ratio
NO
Normally Open
CR
Credit (LEED Related)
OAT
Outdoor Air Temperature
CS
Core and Shell (LEED Related)
O&M
Existing Building Operations and Maintenance (LEED Related)
DB
Dry Bulb
ODU
Outdoor Unit
dB(A)
Decibels with “A” frequency weighting
OUCF
Outdoor Unit Correction Factor
DDOAS
Decoupled Dedicated Outdoor Air
PDI
Power Distribution Integrator
DI
Digital Input
PI
Power Input
DO
Digital Output
PR
Prerequisite (LEED Related)
EA
Energy and Atmosphere (LEED Related)
PTAC
Packaged Terminal Air Conditioner
EEV
Electronic Expansion Valve
PVE
Polyvinyl Ether
ELF
Equivalent Length in Feet
RAT
Return Air Temperature
EPDM
Ethylene Propylene Diene M-Class Rubber
RCL
Refrigerant Concentration Limit
ESP
External Static Pressure
RP
Regional Priority (LEED Related)
ETL
Electronic Testing Laboratories
RUR
Running Unit Ratio
FLA
Full Load Amps
K12
K-12 Schools (LEED Related)
GND
Ground
USGBC
U.S. Green Building Council (LEED Related)
HACR
Heating, Air Conditioning, and Refrigeration
VAH
Vertical Air Handler
HiPOR™
High Pressure Oil Return
VAV
Variable Air Volume
H/M/L
High/Medium/Low
VRF
Variable Refrigerant Flow
HVAC
Heating, , Ventilation and Air Conditioning
VRP
Ventilation Rate Procedure
IAQ
Indoor Air Quality
WB
Wet Bulb
ID
Innovations in Design (LEED Related)
WE
Water Efficiency (LEED Related)
ACRONYMS
6 | INTRODUCTION
MULTI V IV Outdoor Unit Engineering Manual
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