ARTC-SVX002A-EN 77
Appendix A - Acronyms and Abbreviations
All acronyms and abbreviations used in this manual, on
the chiller controllers, and on module indicators and
gauges are listed in the following tables.
Acronym List
All acronyms and abbreviations in this publication are
listed in the following table, with their full spellings and
expansions.
Table 16. Acronyms and abbreviations
Item Expansion
410A R410A
ACWS Automatic City Water Switchover
AHRI Air-Conditioning, Heating and Refrigeration Institute
AL alarm
Alrms alarms
Anlg Analog
AO1 analog output one
Bd board
btu British thermal unit
CCelsius
C1 Circuit 1
C2 Circuit 2
CB Circuit Breaker
CE Conformance European
ckt circuit
CL cool
Cntrl Controller
Comps Compressors
COND condenser
CSA Canadian Standards Association
DB Dry Bulb
DB Distribution Block
DifPr Differential Pressure
Dly Delay
DP Differential Pressure
ECM Electrically Commutated Motor
EER Energy Efficiency Rating
EMC Electromagnetic Compatibility
EMI Electromagnetic Interference
EPC Extended Performance Compressor
EvapFl Evaporator Flow
EVC Electronic [expansion] Valve Controller
EXP1 Expansion Board 1
EXV Electronic [expansion] Valve
F Fahrenheit
FLA Full Load Amperes
FLC Full Load Current
FREECOOL Free Cooling
FRI Friday
gpm gallons per minute
GUI Graphical User Interface
HFC Hydrofluorocarbon
HG Hot Gas
Hotgas1 Hot Gas 1
HP horsepower
HPS High Pressure Switch
HT heat
HVAC Heating, Ventilation, and Air-Conditioning
Ident Identification
IEEE Institute of Electrical and Electronic Engineers
IGBT Insulated Gate Bipolar Transistor
INFO Information
Int Integration
IP Industry Pack
Iso Isolation
LA Low Ambient
lbf foot pounds
LBV Load Balance Valve
LED Light-Emitting Diode
LIFO Last In First Out
LLS Liquid Line Solenoid
LP Low Pressure
LPPD Low Pressure Pump Down
LPS Low Pressure Switch
LRA Locked Rotor Amperes
mminute
Max Maximum
Min Minimum
MON Monday
NEMA National Electrical Manufacturers Association
NFPA National Fire Protection Association
NTC Negative Temperature Coefficient
OA Outside Ambient
OAT Outside ambient Air Temperature
OD Outside Diameter
ORD Open on Rise Differential pressure
ORI Open on Rise Inlet pressure
PProcess
PD Pressure Differential
PE Protective Earth
PLC Programmable Logic Controller
PMD Panel Mounted Disconnect
POE Polyolester Oil
ppm parts per million
Table 16. Acronyms and abbreviations (continued)
Item Expansion
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