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\

Source: VDI 3814 Part 4.1

1. Trade marking

Abbreviation
German
English

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

Abbreviation
German
English

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 designationarrow-up-right

Abbreviation
German
English

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

WUT (WÜT standard)

Heat exchanger

Heat exchanger

430 Ventilation and refrigeration systems

430 Ventilation and refrigeration systems

ABV

Exhaust air fan

Exhaust air fan

BEF

Humidifier

Humidifier

BFP

Humidifier pump

Humidifier pump

BSK

Fire protection flap/valve

Fire damper, fire protection valve

RSK

Smoke protection flap

Smoke protection damper

ERK

Smoke extraction flap

Smoke extractor damper

DDA

Ceiling swirl outlet

Ceiling swirl diffuser

DLA

Ceiling air heater

Roof air heater

DVD

Direct evaporator

Direct evaporator

ELH

Electric air heater

Electrical air heater

ENH

Electric reheater

Electric re-heater

EVH

Electric pre-heater

Electrical pre-heater

ERH

Heater (general)

Heater (general)

FOV

Exhaust air fan

Outgoing air fan

IND

Induction unit

Induction device

KTR

Refrigerant dryer

Refrigerant dryer

KVS

KVS (heat recovery via loop systems)

Circulatory system (heat recovery unit via circulatory systems)

LFI

Air filter

Air filter

LKL

Ventilation flap

Ventilation flap

PPE

Pump

Pump

ULK

Recirculating air cooler

Recirculating air cooling device

UMV

Recirculating air fan

Recirculating air fan

UVF

UV filter

UV filter

VVR

Variable air volume controller

Variable flow rate controller

WLK (no standard)

Water-air cooler

WLH

Water air heater

Water air heater

WNH

Water reheater

Water re-heater

WVH

Water preheater

Water pre-heater

WRG

Heat recovery

Heat recovery

ZUV

Supply air fan

Supply air fan

ERA

Smoke extraction system

Smoke extraction systems

ERK

Smoke extraction flap

Smoke extractor damper

ERV

Smoke extraction fan

Smoke extraction ventilator

NSF

Inflow window

Vent window

NSK

Inflow flap

Vent flap

NST

Inflow door

Vent door

NSV

Inflow fan

Inflow fan

434 Refrigeration systems

434 Refrigeration systems

GLP

Glycol / oil protector

Glycol/oil protector

KMA

Refrigeration machine

Chiller

RKW

Recooling plant

Recooling plant

440 High-voltage systems

440 High-voltage systems

ASV

General power supply

General power supply

BHK

Block heating power plant (CHP)

Co-generation unit

KOA

Compensation installation

Compensation system

KUS

Coupling switch

Coupling switch

LTS

Load isolation switch

Load-break switch

LSS

Circuit breaker

Circuit breaker

NAG

Network analysis device

Network analyser

NSG

Emergency power generator

Emergency power generator unit

SIB

Emergency lighting

Emergency lighting

SSV

Safety power supply

Safety power supply

TRF

Transformer

Transformer

USV

Uninterruptible power supply

Uninterruptible power supply

450 Telecommunications and information technology equipment

450 Telecommunications and information technology equipment

BMZ

Fire alarm control panel

Central fire alarm system

FWT

Fire brigade panel

Fire control panel

KUT ( KÜT standard )

Kitchen panel

Kitchen tableau

RME

Smoke detector

Smoke detector

RSV

Smoke protection curtain

Smoke protection screen

SAZ

Voice alarm control centre

Voice alarm centre

TBL

Panel (general)

Tableau (general)

460 Conveyor systems

460 Conveyors

AZA

Elevator, general

Lift general

AZL

Freight elevator

Goods lift

AZP

Passenger elevator

Passenger lift

470 User-specific systems

470 User-specific systems

DIG

Fume cupboard

Fume cupboard

KOM

Compressor

Compressor

SPS

Programmable logic controller

Programmable logic controllers

479 User-specific system, weather station

479 User-specific system, weather station

RGM

Rain sensor

Rain sensor

SES

Solar radiation

Solar radiation

WST

Weather station

Weather station

WDG

Wind speed

Wind speed

WDR

Wind direction

Wind direction

WDS

Wind strength

Wind force

480 Building automation

480 Building automation and control systems

ANL

Plant switch

System switch

ASE

Automation station setup

Automation station equipment

BUS

Bus line coupler

Bus line coupler

DSE

Data interface unit

Data interface unit

FBM

Fieldbus module

Fieldbus module

ISP

Information focus

Information focal point

MBE

Management and control device

Management and control equipment

481 GA sensors – temperature

481 BACS sensors – temperature

TAG

Exhaust gas temperature

Emissions gas temperature

TAB

Exhaust air temperature

Exhaust air temperature

TAU

Outside temperature

Outside temperature

TFO

Outgoing air temperature

Exhaust air temperature

FSW

Frost protection monitor

Frost protection monitor

TMI

Mixed air temperature

Mixed air temperature

TRU

Room temperature

Room temperature

TRL

Return air temperature

Return flow temperature

STB

Safety temperature limiter

Safety temperature limiter

STW

Safety temperature monitor

Safety temperature monitor

TSP

Storage temperature (general)

Storage temperature (general)

TTP

Dew point temperature

Dew point temperature

TPW

Dew point monitor

Dew point monitor

TNK

Temperature after cooler

Temperature after cooler

TNV

Temperature after pre-heater

Temperature after pre-heater

TNW

Temperature after heat recovery

Temperature after heat recovery

THM

Thermostat

Thermostat

TWW

Hot water temperature

Hot water temperature

TWZ

Circulation temperature

Circulation temperature

TUM

Recirculated air temperature

Recirculating air temperature

TVL

Flow temperature

Flow temperature

TZU

Supply air temperature

Supply air temperature

481 GA sensors – pressure

481 BACS sensors – pressure

PAB

Exhaust air pressure

Exhaust air pressure

PAU

Outside pressure

External pressure

PDI

Differential pressure

Differential pressure

PVI

Pressure sensor (water) flow

Pressure sensor (water) flow

DRW

Pressure monitor

Pressure controller

PFO

Outgoing air pressure

Outgoing air pressure

PRU

Room pressure

Room pressure

PSI

Low-point sensor differential pressure

Index circuit sensor differential pressure

SDB

Safety pressure limiter

Safety pressure limiter

PZU

Supply air pressure

Supply air pressure

481 GA sensors – air quality

481 BACS sensors – air quality

COM

CO2 sensor

CO2 sensor

QAB

Exhaust air quality

Exhaust air quality

QRU

Room air quality

Room air quality

QZU

Supply air quality

Supply air quality

LQF

Air quality sensor

Air quality sensor

481 GA sensors – humidity

481 BACS sensors – humidity

MAB

Relative exhaust air humidity

Relative exhaust air humidity

MAU

Relative outside humidity

Relative external humidity

MFO

Relative outgoing air humidity

Relative outgoing air humidity

MKW

Condensation monitor

Condensation monitor

MMI

Relative mixed air humidity

Relative mixed air humidity

MRU

Relative room humidity

Relative room humidity

MUM

Relative recirculated air humidity

Relative recirculated air humidity

MZU

Relative supply air humidity

Relative supply air humidity

XAB

Absolute exhaust air humidity

Absolute exhaust air humidity

XAU

Absolute outside humidity

Absolute external humidity

XFO

Absolute outgoing air humidity

Absolute exhaust air humidity

XMI

Absolute mixed air humidity

Absolute mixed air humidity

XRU

Absolute room humidity

Absolute room humidity

XUM

Absolute recirculated air humidity

Absolute recirculating air humidity

XZU

Absolute supply air humidity

Absolute supply air humidity

481 GA sensors – consumption recording

481 BACS sensors – consumption recording

ELZ

Electric meter

Electric meter

EGZ

Gas meter natural gas

Gas meter natural gas

KMZ

Cooling energy meter

Cooling energy meter

WMZ

Heat meter

Heat meter

WAZ

Water meter

Water meter

BSZ

Fuel meter (oil)

Fuel meter (oil)

DMZ

Steam meter

Steam meter

GTZ

Degree day number

Degree day number

481 GA sensors – condition recording and others

481 BACS sensors – condition recording and other

LCK

Leak detection monitoring

Leakage monitoring

NOT

Emergency stop device/button

Emergency stop unit/button

LSP

Storage fill level

Stock level

SSW

Flow monitor

Flow monitor

UBL

Overflow monitoring

Overflow monitoring

WMS

Water shortage protection

Low-water cut-off

WSW

Water flow monitor

Water flow monitor

481 GA sensors - speed

481 BACS sensors – speed

SPP

Pump speed

Pump speed

SAB

Fan speed (exhaust air)

Fan speed (exhaust air)

SFO

Fan speed (outgoing air)

Fan speed (exhaust air)

SZU

Fan speed (supply air)

Fan speed (supply air)

481 GA sensors – volume flow

481 BACS sensors – volume flow

FAB

Exhaust air volume flow

Exhaust air volume flow rate

FAU

Outdoor air flow

Outdoor air flow rate

FFO

Outgoing air volume flow

Exhaust air volume flow rate

FSO

Brine volume flow (KVS)

Volume flow brine (circulatory system)

FKW

Cold drinking water volume flow

Volume flow cold drinking water

FWW

Hot drinking water volume flow

Volume flow hot drinking water

FAW

Water treatment volume flow

Volume flow water purification

FZU

Supply air volume flow

Supply air volume flow

481 GA actuators – actuator drives

481 BACS actuators – actuating drives

HKV

Radiator valve actuator

Radiator valve drive

KDV

Cooling ceiling valve actuator

Cooling ceiling valve drive

KLA

Motorised flap (general)

Motorised flap (general)

VEN

Motorised valve general

Motor valve general

481 GA lighting

481 BACS lighting

EAU

External illuminance

Illumination external

ERU

Room illuminance

Illumination room

CRU

Room light colour

Light colour room

IRT

Red light intensity

Red light intensity

IGN

Green light intensity

Green light intensity

IBL

Blue light intensity

Blue light intensity

481 GA sun protection

481 BACS sun protection

JWI

Blind angle position

Blind angle position

JPO

Shading position

Shading position

JFB

Travel command

Movement command

485 Room automation

485 Room automation

ABE

Display and control device

Display and control unit

PAE

Presence switch, detector, motion detector

Presence switches, detectors, motion detectors

RAE

Room automation device

Room automation device

RBG

Room operating unit

Room control unit

4. Function identifier

Abbreviation
German
English

AF__

Request

Requirement

AS_

Plant switch

System switch

BEL

Room occupied status

Occupied status room

GWC

Calculated threshold

Calculated limit value

SWC

Calculated setpoint

Calculated setpoint

BB_

Ready for operation

Ready for operation

BM_

Operation message

Operational message

BZ_

Operating hours

Hours of operation

BZG

Operating hours limit value

Hours of operation limit value

CAL

Calendar object

Calendar object

COM

Command object

Command object

TV_

Controller differential constant

Differential constant controller

EF_

Switch-on error, unauthorized ON

Switch-on error, unauthorised ON

EN_

Energy level

Energy level

ENC

Energy level calculated

Energy level calculated

ENT

Unlocking

Unlocking device

EE_

Event enrollment object

Envent enrollment object

FR_

Release

Enabled

GM_

Hazard message

Danger alarm

GW_

Limit value

Threshold

GWX

MAX limit value

MAX limit

GWI

MIN limit value

MIN limit

GWN

Night limit value

Night limit

GWT

Day limit value

Day limit

GP_

Group object

Group object

HD_

LVB manual message

local priority and operating units manual message

HEX

Heating characteristic exponent

Heating characteristic curve exponent

HPV

Heating characteristic parallel shift

Heating characteristic curve parallel displacement

HST

Heating characteristic steepness

Heating characteristic curve steepness

NAH

Heating circuit night setback

Heating circuit night reduction

HYS

Hysterese

Hysteresis

KAL

Calendar

Calendar

LFZ

Running time error

Runtime error

LPX

Loop-MAX limitation

Loop MAX limit

LPI

Loop-MIN limitation

Loop MIN limit

LP_

Loop object (controller object) – complex object

Loop object (controller object) – complex object

MAX

Maximum value

Maximum value

MW_

Measured value

Measured value

MIN

Minimum value

Minimum value

MWT

Average value

Mean

NL_

Run-on time

Follow-up time

TN_

Reset time

Reset time

NC_

Notification class object

Notification class object

PR_

Program

Program

XP_

Proportional band

Proportional band

RMA

Feedback OPEN

Feedback OPEN

RMZ

Feedback CLOSED

Feedback CLOSED

RW_

Feedback value

Feedback value

RFA

Feedback error OPEN

Feedback error OPEN

RFZ

Feedback error CLOSED

Feedback error CLOSED

RM_

Feedback

Feedback

RF_

Execution control

Execution control

SB_

Switch command

Switching command

SCH

Scheduler

Scheduler

SW_

Setpoint

Setpoint

SWB

Base setpoint

Base setpoint

SWH

Heating setpoint

Heating setpoint

SWK

Cooling setpoint

Cooling setpoint

SWX

Setpoint, maximum

Setpoint, maximum

SWM

Mechanical setpoint

Setpoint, mechanical

SWI

Setpoint, minimum

Setpoint, minimum

SWN

Night setpoint

Night setpoint

SWT

Day setpoint

Day setpoint

SWV

Setpoint adjuster

Setpoint adjuster

SVM

Mechanical setpoint adjuster

Setpoint adjustment, mechanical

STA

Status

Status

ST_

Control signal

Control signal

SM_

Fault

Fault

TS_

Push button

Button

TZ_

Deadband

Dead zone

TRM

Trend log multiple object

Trend log multiple object

TR_

Trend log object

Trend log object

KP_

Gain controller

Amplification controller

TV_

Hold time

Retention period

WM_

Maintenance message

Maintenance message

WG_

Efficiency

Efficiency

ZW_

Counter value

Count value

ZP_

Time program

Time program

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