Abbreviations
Based on VDI 3814
This collection is intended to simplify finding abbreviations in building automation. The abbreviations largely follow VDI 3814.
The HVAC macros try as much as possible to adhere to these abbreviations. These lists are continually expanded. Contact us if entries are missing. For simplicity, only the most important designations are used.
Overview of the compilation
System identification key according to VDI 3814\
1. Trade marking
TTF
Doors, gates, windows, sun protection
Doors, gates, windwos, sun protection
GWA
Sewage, water and gas systems
Sewage, water and gas plants
HZG
Heat supply systems
Heat supply systems
RLT
Air-technical systems
Ventilation systems
KAE
Refrigeration systems
Refrigeration systems
ELT
High-voltage/current systems
High-voltage systems
FIA
Telecommunication and information technology systems
Telecommunication and information technology equipment
GMA
Hazard detection and alarm systems
Hazard detection and alarm systems
FTA
Conveying systems
Conveyors
KTA
Kitchen technical systems
Kitchen technology systems
WAR
Laundry and cleaning systems
Laundry and cleaning systems
MVA
Media supply systems
Media supply systems
MED
Medical and laboratory technical systems
Medical and laboratory equipment
FLA
Fire extinguishing systems
Fire extinguishing systems
BTA
Bathroom technical systems
Bathing facilities
PRO
Process heating, cooling and air systems
Process heating, cooling and air systems
ENT
Waste management systems
Waste disposal facilities
GAS
Building automation general
Building automation and control systems, general
ISP
Automation focus / Information focus
Automation focal point / information focal point
RAU
Room automation (zone)
Room automation
TAA
Technical systems in outdoor facilities
Technical equipment in outdoor facilities
2. Short designation of systems
300 Structure – Building construction
300 Structure – Building constructions
FAS
Façade (overall, otherwise room reference)
Facade (over-arching, otherwise room reference)
NRA
Natural smoke extraction
Natural smoke extraction
TUE
Doors, gates, airlocks
Doors, gates, sluices
RWA
Smoke and heat extraction systems
Smoke and heat exhaust ventilation system
SON
Sun protection system
Sunlight protection
411 Sewage systems
411 Sewage plants
ABS
Separator system
Separator facility
HBA
Lifting station
Lifting system
NEU
Neutralisation system
Neutralisation plant
412 Water systems
412 water plants
BGH
Trace heating
Trace heating
BTW
Operating/process water
Process water
BWA
Well water
Well water
DOS
Dosing system
Dispensing installation
DEA
Booster pump system
Pressure booster system
EHA
Water softening plant
Softening unit
TWA
Drinking water
Drinking water
TWE
Drinking water heating system (formerly WWB)
Drinking water heating system (prev. WWB)
UKO
Reverse osmosis system
Reverse osmosis system
VEA
Deionisation plant / full desalination plant
Desalination plant
421 Heat generation systems
421 Heat generation plants
BHK
CHP (combined heat and power)
CHP (combined heat and power)
EHZ
Electric heating
Electric heating
FWU (Std. FWÜ)
District heating transfer
District heating transfer
GTH
Geothermal system
Geothermal system
KES
Boiler
Boiler
RDE
Pure steam generation
Clean steam generation
SOL
Solar system
Solar power system
WPU
Heat pump
Heating pump
422 Heat distribution networks
422 Heat distribution networks
DHG
Pressure maintenance
Pressure maintenance
HZK
Heating circuit
Heating circuit
HKK (no standard)
Heating/Cooling circuit
Heating-/Cooling circuit
HZG
Heating (general)
Heating (general)
NSA
Make-up water system
Back-feed system
PFS
Buffer storage
Buffer
WVN
Heat distribution network
Heat distribution network
WTR
Heat exchanger
Heat exchanger
423 Space heating surfaces
423 Space-heating surfaces
BKA
Concrete core activation
Concrete core activation
DHZ
Ceiling heating
Overhead heating
DSP
Ceiling radiant panels
Ceiling radiator panels
FAH
Façade heating
Facade heating
FLH
Surface heating
Panel heating
FBH
Underfloor heating
Underfloor heating
HKD
Heating/cooling ceiling
Heated/chilled ceiling
STH
Static heating
Static heating
430 Air-technical systems
430 Ventilation systems
ABA
Exhaust air system
Exhaust air system
DLH
Ceiling air heater
Roof air heater
KVS
Circuit-linked system
Circulatory system
LAZ
Air handling center
Air processing unit
MRA
Mechanical smoke extraction systems
Mechanical smoke extraction system
RDA
Smoke pressure system
Smoke pressure system
RLT
Room air technology (general)
Ventilation technology (general)
TKA
Partial air-conditioning system
Partial air-conditioning system
TLS
Door air curtain system
Air curtain system
ULA
Recirculation system
Recirculating air system
VKA
Full air-conditioning system
Full air-conditioning system
WRG
Heat recovery system
Heat recovery system
ZUA
Supply air system
Intake air system
ERA
Smoke extraction system
Smoke extraction system
434 Refrigeration systems
434 Refrigeration systems
FKU (Std. FKÜ)
District cooling transfer
Remote cooling transfer
KAE
Cooling (general)
Cooling (general)
KKR
Cooling circuit
Cooling circuit
KVN
Cooling distribution network
Cooling distribution network
KWE
Chilled water generation
Cool water generation
KVE
Cooling supply for automation focal points/electrical cabinet cooling
Cooling supply automation focal points/electrical cabinet cooling
KSP
Cooling storage
Cooling storage
KUD (Std. KÜD)
Chilled ceiling
Chilled ceiling
RKW
Recooling plant (also cooling tower)
Re-cooling plant (also cooling tower)
441 High- and medium-voltage systems
441 High and medium-voltage systems
STA
Switchgear
Switchgear
TRF
Transformer
Transformer
MSA
Medium-voltage installation
Medium-voltage system
KOA
Compensation installation
Compensation system
FUA
Frequency converter installation
Frequency converter system
442 Self-power supply systems
442 Self-power supply systems
AGA
Exhaust system
Emissions system
BAT
Battery system
Battery unit
BHK
Block heating power plant (CHP)
Co-generation unit
BRV
Fuel supply
Fuel supply
ESA
Emergency power system
Standby power system
PVA
Photovoltaic system
Photovoltaic system
USV
Uninterruptible power supply
Uninterruptible power supply
443 Low-voltage switchgears
443 Low-voltage switchgears
ASV
General power supply
General power supply
SSV
Safety power supply
Safety power supply
BEL
Lighting system
Lighting
SIB
Emergency lighting
Emergency lighting
451 Telecommunications systems
451 Telecommunications systems
TEL
Telecommunications system
Telecommunications systems
452 Search and signalling systems
452 Search and signalling systems
LRA
Nurse call / light call system
Call signalling system
TÜA
Door intercom and opener system
Door intercom and door opener system
PRA
Patient call system
Paging system
453 Time service systems
453 Time service systems
ZEA
Clock and time recording system
Clock and time recording system
454 Electro-acoustic systems
454 Electro-acoustic systems
ELA
Electro-acoustic system, public address system
Electro-acoustic system, sound systems
KDA
Conference and interpreting system
Conference and interpreting equipment
GSA
Intercom system
Intercom system
SAA
Voice alarm system
Voice alarm system
WSA
Two-way communication systems
Intercommunication systems
455 Television and antenna systems
455 Television and antenna systems
TVA
Television system
Television system
SEA
Transmitting and receiving antenna system
Transmitting and receiving antenna system
BOS
BOS radio system
BOS (Germany emergency services) radio system
456 Hazard detection and alarm systems
456 Hazard detection and alarm systems
BMA
Fire alarm system
Fire detection and alarm system
COW
CO warning system
Carbon monoxide warning system
EMA
Intrusion alarm system
Burglar alarm system
FWT
Fire brigade panel
Fire control panel
FWS
Escape route securing system
Escape route protection system
GMA
Hazard detection and alarm system
Hazard detection system
GWA
Gas warning system
Gas warning system
RAS
Smoke aspiration system
Smoke aspiration system
RBA
Room observation system
Room observation system
ÜFA
Robbery alarm system
Robbery alarm system
WKA
Guard control system
Guard control system
NOT
Emergency call system
Emergency call system
ZKS
Access control system
Access control system
457 Transmission networks
457 Transmission grids
LAN
Networks for the transmission of data, voice, text and images
Networks for the transmission of data, voice, text and images
459 Telecommunication and information technology equipment, other
459 Telecommunication and information technology equipment, other
FWA
Remote control systems
Remote control systems
PLS
Parking guidance system
Parking guidance systems
460 Conveyor systems
460 Conveyors
ATA
File transport systems
File transportation systems
AUF
Elevator
Lift
BFA
Befahranlagen
Inspection systems
FST
Moving walkways
Moving walkways
FTR
Escalators
Escalators
FSA
Façade lifts
External lifts
GFA
Baggage conveyor system
Baggage conveyor system
RPA
Pneumatic tube system
Pneumatic delivery systems
WTA
Goods transport system
Goods transportation facilities
470 User-specific systems
User-specific systems
471 Kitchen technology systems
471 Kitchen technology systems
KLK
Small refrigeration systems
Small refrigeration unit
472 Laundry and cleaning systems
472 Laundry and cleaning systems
DES
Disinfection system
Disinfection unit
REA
Cleaning system
Cleaning unit
STR
Sterilization equipment
Sterilisation systems
WAA
Water treatment plant
Water treatment system
WÄA
Laundry system
Laundry system
473 Media supply system
Media supply systems
DRL
Compressed air supply system
Compressed air supply system
DRA
Pressure regulation system
Pressure regulator unit
MVA
Media supply system
Media supply system
MTG
Medical and technical gases
Medical and technical gases
VAK
Vacuum system
Vacuum unit
474 Medical and laboratory equipment
474 Medical and laboratory equipment
MED
Medical technical equipment
Medical technical plant
MGV
Medical gas supply
Medical gas supply
LAB
Laboratory equipment (general)
Laboratory equipment (general)
475 Fire extinguishing systems
475 Fire extinguishers
FLA
Fire extinguishing system
Fire extinguisher
GLA
Gas extinguishing system
Gas extinguishing system
LOS (Norm LÖS)
Extinguishing system (general)
Fire extinguishing system (general)
NLA
Water mist extinguishing system
Mist-extinguishing system
NOX
NOx system
NOx system
SPR
Sprinkler system
Sprinkler system
WHA
Wall hydrant system
Wall hydrant system
478 Disposal systems
478 Disposal facilities
AEA
Waste disposal system
Waste disposal system
MEA
Media disposal system
Media disposal system
SSA
Central vacuum systems
Vacuum cleaning systems
480 Building automation
480 Building automation and control systems
ISP
Information focus
Information focal point
WET
Weather station
Weather station
MBE
Management and control device
Management and operating equipment
RAU
Room automation
Room automation
RAV
Room automation system distributor
Room automation system distributor
540 Technical equipment in outdoor facilities
540 Technical equipment in outdoor facilities
RRB
Rainwater retention basin
Rainwater retention basin
ZTA
Cistern system
Cistern system
3. Device and component designation
FEE
Functionally independent unit
Functionally independent equipment
ASR
Autonomous control or regulation unit
Self-contained control or regulation unit
SSK
Switch cabinet (trade-specific)
Control cabinet (trade-specific)
330 Doors, gates, windows, sun protection
330 Doors, gates, windows, sun protection
FEN
Window (drive)
Window (drive)
FEK
Window contact
Window contact
JAL
Venetian blind
Blind
MAR
Awning
Awning
ROL
Roller shutters
Roller shutters
TOR
Gate
Gate
TÜR
Door
Door
TÜK
Door contact
Door contact
VER
Darkening
Blackout
412 Water systems
412 Water plants
BGH
Trace heating
Trace heating
EWH
Electric heater (DHW preparation)
Electric heating (domestic hot water preparation)
WFL
Water filter
Water filter
421 Heat generation systems
421 Heat generation plants
FEE
Functionally independent unit
Functionally independent equipment
HZK
Heating boiler
Boiler