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Appendix A - Acronyms and Abbreviations
Table 16. Acronyms and Abbreviations (continued)
Item
Expansion
In
Inch
INFO
Information
Int
Integration
IP
Industry Pack
Iso
Isolation
LA
Low Ambient
lbf
foot pounds
LBV
Load Balance Valve
LED
Light-Emitting Diode
Lgth
Length
LIFO
Last In First Out
Liq
Liquid
LLS
Liquid Line Solenoid
LP
Low Pressure
LPPD
Low Pressure Pump Down
LPS
Low Pressure Switch
LRA
Locked Rotor Amperes
m
minute
Max
Maximum
Mem
Memory
Min
Minimum
MON
Monday
ms
millisecond
Mx
Module 1 through x
NEMA
National Electrical Manufacturers Association
NFPA
National Fire Protection Association
NTC
Negative Temperature Coefficient
Num
Number
OA
Outside Ambient
OAT
Outside [ambient] Air Temperature
OD
Outside Diameter
Opn
Open
OS
Operating System
P
Process
Params
Parameters
PASV
Passive File Transfer Protocol
PD
Pressure Differential
PE
Protective Earth
PLC
Programmable Logic Controller
PMD
Panel Mounted Disconnect
POE
Polyolester Oil
Pos
Position
ppm
parts per million
Pres
pressure
psi
pounds per square inch
PumpDown
Pump Down
PumpMod
Pump Module
PWM
Pulse Width Modulation
72
Table 16. Acronyms and Abbreviations (continued)
Item
Expansion
Pwrup Stg Up Power Up Stage Up
REFRIG
Refrigeration
RemOff
Remote Off
RMA
Returned Merchandise Authorization
RmpDn
Ramp Down
Rot
Rotation
rpm
revolutions per minute
RP
Redundant Pump
s
second
S1, S2
Switch #1, Switch #2
SAT
Saturday
SDT
Saturated Discharge Temperature
Simult
Simultaneous
SL
Service Line
Soft
Software
SP
Set Point
SQ.
Square
Src
Source
SSS
Solid State Starter
SST
Saturated Suction Temperature
StartPt
Stating Point
Suct
Suction
SUN
Sunday
Sys
System
SysChEWT
System Chilled Entering Water Temperature
SysChLWT
System Chilled Leaving Water Temperature
SysHotEWT
System Hot Entering Water Temperature
SysHotLWT
System Hot Leaving Water Temperature
Temp
Temperature
Temp Diff -
Temperature Differential (minus)
Temp Diff + Temperature Differential (plus)
TEMPS
Temperatures
THU
Thursday
TT
Twin Turbine
TUE
Tuesday
TXV
Thermal Expansion Valve
U1, U2
binary 1, binary 2
UL
Underwriters Laboratories
UV
Ultraviolet
VAC
Volts, Alternating Current
Var
Variable
Variab
Variable
VDC
Volts, Direct Current
Ver.
Version
VFD
Variable Frequency Drive
WED
Wednesday
Y1, Y2
analog output: y1 = condenser, y2 = evaporator
Y4
analog output
ARTC-SVX005A-EN
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