McQuay OM 751
5
Introduction
Acronyms/Abbreviations
The following table list acronyms and abbreviations that may or may not be used within this
manual. Other abbreviations for keypad displays and parameters can be found in Table 8 on
page 14 and Table 26 on page 47.
Table 5: Acronyms and abbreviations
Description
Acronym/
Abr.
Air Fan
AF
Auxiliary Heat End Differential
AHED
Auxiliary Heat Start Differential
AHSD
American Standard Code for Information Interchange
ASCII
American Society of Heating, Refrigerating, and Air
Conditioning Engineers, Inc
ASHRAE
Compressorized Cooling Lockout
CCLO
Space CO
2
Setpoint
CO
2
S
Chilled Water
CW
Chilled Water Valve Position
CWVP
Discharge Air
DA
Discharge Air High Limit
DAHL
Discharge Air Temperature
DAT
Discharge Air Temperature Setpoint
DATS
Demand Controlled Ventilation
DCV
DX Cooling Discharge Air Low Limit
DXLL
Economizer Compare Differential
ECD
Economizer IA/OA Enthalpy Differential
EED
Economizer OA Enthalpy Setpoint
EES
Emergency Heat Setpoint
EHS
Exhaust Interlock OAD Min Position Setpoint
EOAD
Outdoor Air Temperature Setpoint
EOAT
End-of-Cycle
EOC
EOC OAT Low Setpoint
EOCS
Outdoor Air Humidity Output
EORH
Space Humidity Setpoint
ERH
Economizer IA/OA Temp Differential
ETD
Economizer OA Temp Setpoint
ETS
Source (water in) Temperature
EWIT
Face and Bypass Damper Position
FBDP
Federal Communications Commission
FCC
Face and Bypass
F & BP
Heating, Ventilating, Air Conditioning Refrigeration
HVACR
Heating EOC Valve Setpoint
HEOC
Hot Water
HW
Indoor Air
IA
Indoor Air Fan
IAF
Indoor Air Temperature
IAT
Light Emitting Diode
LED
Local User Interface
LUI
Mixed Air Low Limit
MALL
Mechanical Cooling Low Limit Setpoint
MCLL
National Electric Code
NEC
Outside Air
OA
Outside Air Dampers
OAD
Energize Exhaust Fan OAD Setpoint
OADE
OAD Min Position High-Speed Setpoint
OADH
OAD Min Position Low-Speed Setpoint
OADL
OAD Min Position Med-Speed Setpoint
OADM
Outdoor Air Damper Position
OADP
OAD Lockout Setpoint
OALS
OAD Max Position Setpoint
OAMX
Outside Air Temperature
OAT
