LVE = Exhaust Louver
LVI = LOUVER - Intake

Here is a small glossary I use for HVAC drawings:

Equipment Codes
ACC
AC CONDENSER
ACE
AC EVAP
ACP
AC PACKAGE
AHU
AIR HANDLER UNIT
AMZ
ASU MULTI-ZONE
ASU
AIR SUPPLY UNIT
BCG
BATTERY CHARGER
BLR
BOILER
BWR
BLOWER
CLR
CHILLER
CMD
COMPRESSED AIR DRIER
CMP
AIR COMPRESSOR
DIF
DIFFUSER
DWC
DOMESTIC WATER CHILLER
DWH
DOMESTIC WATER HEATER
ELP
ELECTRIC PANEL
ELV
ELEVATOR EQUIP
FAE
FAN EXHAUST
FAN
FAN
FAR
FAN RELIEF AIR
FCR
FAN CIRCULATING
FEX
FIRE EXTINGUISHER
FQD
FREQUENCY DRIVE
FRQ
FREQUENCY DRIVE
FSA
FIRE ALARM
FSM
FIRE SYS. – MONITOR MOD.
FSC
FIRE SYS. – CONTROL MOD.
FSD
FIRE SYS. – DUCT DETECTOR
FSS
FIRE SYS. – SMOKE DETECTOR
FSP
FIRE SYS. - SPRINKLER
FSU
FIRE SYS. - SUPPRESSION
GEN
GENERATOR
GRK
GROUNDSKEEPING
HDR
HANDICAP DOOR
HLF
HANDICAP LIFT
KDS
KITCHEN DISPOSAL
KDW
KITCHEN DISHWASHER
KFR
KITCHEN FRYER
KFZ
KITCHEN FREEZER
KGR
KITCHEN GRILL
KIC
KITCHEN ICE MAKER
KOV
KITCHEN OVEN
KRN
KITCHEN RANGE
KST
KITCHEN STEAMER
KWR
KITCHEN WALK-IN-REFER
LVE
LOUVER - Exhaust
LVI
LOUVER - Intake
MTR
MOTOR
OCP
OFFICE COPIER
OFX
OFFICE FAX
OPC
OFFICE PC
OPR
OFFICE PRINTER
PBO
PUMP BOOSTER
PCH
PUMP CHILLED WATER
PCO
PUMP COOLING TOWER
PCR
PUMP CIRCULATION
PDO
PUMP DOMESTIC HW
PFU
PUMP FUEL
PHW
PUMP HOT WATER
PMP
PUMP
PSU
PUMP SUMP
REF
REFRIGERATION
SDR
SECURITY DOOR
SEC
SECURITY
SLK
SECURITY LOCK
SMO
SECURITY MONITOR
SSY
SECURITY SYSTEM
SND
SOUND GENERATING SYSTEM
SUH
SPACE UNIT HEATER
TEL
TELEPHONE
THR
THERMOSTAT
TNK
TANK
TNS
TRANSFER SWITCH
UPS
UPS
VEH
VEHICLE
VVC
VAV BOX COOLING
VVH
VAV BOX REHEAT
Department Codes
ADM
Administrators
AIR
Airport Commission
APR
Appraisers Office
ARV
Archives
AUD
Audit Services
BOC
BOCC
CAS
CASA
COR
Corrections
CNC
County Clerk
CRT
Court Services
DCA
Crt Admin
DCC
Crt Clerk
DAT
District Attorney
DCT
District Crt Trustee
ELC
Election Office
ECC
Emerg Communications
EMM
Emerg Management
EMS
Emerg Medical Serv
ENV
Environmental Dept
EXC
Extension Council
FAC
Facilities
HR
Human Resources
HSA
Human Serv & Aging
ITS
ITS / AIMS
JCD
JCDS
JIM
JIMS
JCL
Jo Co Library
JUV
Juvenile IAC
LAW
Law Library
LGL
Legal
MNH
Mental Health
TRE
Motor Vehicle-NE
TRE
Motor Vehicle-OL
MUS
Museum
NUR
Nursing Center
OFM
Office of Financial Mgt.
PRK
Parks & Recreation
PLN
Planning Office
PRT
Print Shop
PBH
Public Health
PWK
Public Works
ROD
Register of Deeds
SHR
Sheriff
TRE
Treasurer
JCW
Wastewater
Manufacturer’s Codes
AMX
AMEREX
AOS
A.O.Smith
BAL
Baldor
BBC
Barber Coleman
BLG
Bell-Gossett
BRN
Burnham
BUF
Buffalo Forge
COO
Coolair
COP
Copeland
CUR
Curtis-Toledo
DEL
Dell
EHP
E.H. Price
FAS
FASCO
FIL
Filtrine
FUJ
Fujitsu
GHK
Greenheck
GRM
Graham
GWY
Gateway
HNK
Hankinson
HP
Hewlett Packard
IBM
IBM
KHL
Kohler
LBT
Liebert
MAG
MAGNETEK/CENTURY
MCQ
McQuay
MRL
Marley
PAC
Paco
ROP
Roper
SAV
Savin
SHP
Sharp
SNY
Snyder General
STU
Stultz
USM
US Motor



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Note added at 24 mins (2005-09-05 06:49:48 GMT)
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REF: http://facilities.jocogov.org