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Rooftop unit economizer controller · BACnet points list

Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) BACnet points list

Updated 12 November 2026Unofficial source

Short answer

The ZIP Economizer is a rooftop unit economizer controller that runs free cooling, integrated cooling, DCV, ventilation, purge and compressor lockouts from thermostat calls. With the ECON-ZIP-COM module it is a BACnet MS/TP device that reports temperatures, humidity, enthalpy, CO2, damper position, run times, thermostat and relay states, operating mode and the active alarm. The BMS can send occupancy, heating and cooling commands, feed network sensor values, and adjust setpoints and changeover limits.

This page lists 71 BACnet objects for the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) — 32 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from a copy of Belimo’s documentation hosted by ZOT Supply, not by Belimo itself, so treat it as unofficial.

Manufacturer
Belimo
Model
ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)
Equipment
Rooftop unit economizer controller
Equipment type
Rooftop units, AHUs & DOAS
BACnet objects
71 (32 writable)
Transport
BACnet MS/TP
Firmware
Application 02.01.1003, firmware 08.04.0000
Also known as
ZIP Economizer, ECON-ZIP-BASE, ECON-ZIP-COM, ECON-ZIP-EM, Belimo economizer controller BACnet, ZIP Economizer BACnet
Source document
ZIP Economizer Installation and Operation Manual, BACnet Object Descriptions · rev. Tech.Doc 03/21 (unofficial copy, hosted by ZOT Supply)
Download CSV 71 rows Download EDE B.I.G.-EU JSON Source PDF (unofficial copy) ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Belimo’s current documentation and the live device before use. Not official Belimo information. Terms of use.

BMS integration notes: Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)

Integration in brief

Select BACnet Active in the Com Interface menu and set baud, device ID and MS/TP address. Command occupancy and the Y1/Y2/W1 calls through MO 1-5, or let the thermostat drive them, and read MI 1 operating mode, AI 1 damper position, SAT/OAT and BI 1 / MI 2 for alarms.

Minimum points to map

The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.

ObjectNameWhyAccess
MO 1OccupancyCommandOccupancy (fan): 1 enabled, 2 disabledCommand
MO 4Y1CommandStage 1 cooling callCommand
MO 5Y2CommandStage 2 cooling callCommand
MO 3W1CommandHeating callCommand
AV 2SpFreeCoolSATFree cooling supply air setpointWrite
MI 1OperationModeOperating mode (free cooling, DCV, etc.)Read
AI 1RelPosDmpFbDamper position feedback, %Read
AI 2SATSupply air temperatureRead
AI 3OATOutdoor air temperatureRead
MI 2CurrentAlarmMost recent active alarmRead

Enable & remote start

Set Com Interface to BACnet Active (default is MP Active); the ECON-ZIP-COM module is required.

Heartbeat & communication loss

AV 18 BusWatchdog sets a bus timeout of 0-3600 s (0 = off, the default). When it trips, the commandable objects fall back to their relinquish defaults.

Sensors & values from the BMS

AO 1-5 accept CO2, outdoor and return humidity and temperature from the network; they read 8888 (no value) until written.

Network setup

Watch out for

Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) BACnet objects

Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.

71 of 71 shown
Type
Access
Show
Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) BACnet Points List
DescriptionStates
AImin1RelPosDmpFbDamper position feedback%Read
AImin2SATSupply air temperature°FRead
AImin3OATOutdoor air temperature°FRead
AI4OAHOutdoor air humidity%RHRead
AI5OAEOutdoor air enthalpyBtu/lbRead
AI6RATReturn air temperature°FRead
AI7RAHReturn air humidity%RHRead
AI8RAEReturn air enthalpyBtu/lbRead
AI9CO2ConcentrationCO2 concentrationppmRead
AI10SpDmpPosDamper position output%Read
AI11RunTimeCompressor1Run time, compressor 1hRead
AI12RunTimeCompressor2Run time, compressor 2hRead
AI13RunTimeEconRun time, free coolinghRead
AI14RunTimeMechanicalRun time, mechanical coolinghRead
AI15RunTimeDCVRun time, demand control ventilationhRead
AI16RunTimeIntegratedRun time, integrated coolinghRead
AI17RunTimeVentilationRun time, ventilationhRead
AI18RunTimeHeatingRun time, heatinghRead
AI19RunTimeUnoccupiedRun time, unoccupiedhRead
AI20RunTimeFreezeProtectionRun time, freeze protectionhRead
AI21DeviceProductionDateProduction dateRead
AO1CO2NetworkCO2 value from the network, 250-2200ppmCommand
AO2OAHNetworkOutdoor air humidity from the network, 5-100%RHCommand
AO3OATNetworkOutdoor air temperature from the network, -50 to 160°FCommand
AO4RAHNetworkReturn or space humidity from the network, 5-100%RHCommand
AO5RATNetworkReturn or space temperature from the network, -50 to 160°FCommand
AO6RemoteDmpOverridePosDamper override position; disables FC, VENT, DCV, Purge%Command
AV1SpCO2PPMZone CO2 setpoint, 500-2000ppmWrite
AVmin2SpFreeCoolSATFree cooling SAT setpoint, 45-70 (default 55)°FWrite
AV3VentMinVentilation minimum damper position%Write
AV4LowSpeedVentMinVentilation minimum damper position at low fan speed%Write
AV5DCVMinDCV minimum damper position%Write
AV6LowSpeedDCVMinDCV minimum damper position at low fan speed%Write
AV7ExhFanOnDamper position that enables the exhaust fan%Write
AV8LowSpeedExhFanOnExhaust fan enable damper position at low fan speed%Write
AV9PurgeDmpPosPurge mode damper position%Write
AV10DrybulbHighLimitHigh limit, single dry bulb changeover, 60-80°FWrite
AV11EnthHighLimitEnthalpy high limit, single enthalpy, 25-30Btu/lbWrite
AV12DiffEnthHighLimitEnthalpy high limit, differential enthalpy, 25-30Btu/lbWrite
AV13DiffDrybulbHighLimitTemperature high limit, differential dry bulb, 60-80°FWrite
AV14EnthTempHighLimitTemperature high limit, single enthalpy, 60-80°FWrite
AV15DiffEnthTempHighLimitTemperature high limit, differential enthalpy, 60-80°FWrite
AV16LowOATCompLockoutLimitLowest OAT for compressor operation (LCLO), 40-65°FWrite
AV17ZIPCodeZIP code; sets high limits for the climate zoneWrite
AV18BusWatchdogBus watchdog timeout, 0-3600, 0 = offsWrite
BI1AlarmStateAlarm stateReadActive/Inactive
BI2GOccupancy (fan) stateReadActive/Inactive
BI3Y1Stage 1 cooling requestReadActive/Inactive
BI4Y2Stage 2 cooling requestReadActive/Inactive
BI5W1Stage 1 heating requestReadActive/Inactive
BI6Compressor1StateCC1 relay stateReadActive/Inactive
BI7Compressor2StateCC2 relay stateReadActive/Inactive
BI8ExhFanStateExhaust fan relay stateReadActive/Inactive
BI9SATLowLimStateCompressor disabled, SAT too lowReadActive/Inactive
BI10LowOATCompLockoutStateLow ambient compressor lockout (LCLO)ReadActive/Inactive
BI11PurgeStatePurge requested (PurgeCommand or AUX2)ReadActive/Inactive
BI12FanSpeedStateIndoor fan speedReadActive/Inactive
BV1PurgeOperationEnEnable purge operation (default Inactive)WriteActive/Inactive
BV2SatY2LimitEnEnable default SAT Y2 limit (default Active)WriteActive/Inactive
BV3RemoteDmpOverrideEnEnable remote damper override (default Inactive)WriteActive/Inactive
MImin1OperationModeCurrent operating modeRead1=Virgin, 2=Auto, 3=Manual, 4=Factory Test, 5=Acceptance Tests, 6=Free Cooling, 7=Integrated Cooling, 8=Mechanical Cooling, 9=DCV, 10=Ventilation, 11=Heating, 12=Unoccupied, 13=Purge, 14=Freeze Protection, 15=Brownout, 16=PCB Test, 17=Recovery, 18=Damper Scaling
MImin2CurrentAlarmMost recent active alarmRead1=OAT_OR, 2=OAT_ND, 3=OAH_OR, 4=OAH_ND, 5=OAHDT, 6=OAH, 7=RAT_OR1, 8=RAT_ND1, 9=RAT_OR2, 10=RAT_ND2, 11=RAH_OR, 12=RAH_ND, 13=RHnoOAH, 14=RHnoRAT, 15=SAT_OR, 16=SAT_ND, 17=Y2noY1, 18=SAT_Er1, 19=SAT_Er2, 20=Dmp_Pos, 21=SAT_Er3, 22=Dmp_Stk, 23=EM_ND, 24=EF_ND, 25=CC1_ND, 26=CC2_ND, 27=IF_ND, 28=CO2_ND, 29=CO2_OR, 30=W1 and Y1, 31=No_Alm
MI3CompressorQuantityCompressors detected or selectedRead1=Auto, 2=1 compressor, 3=2 compressors, 4=undefined
MI4ClimateZoneClimate zone from the ZIP codeRead1-19=US zones 1A-8 (without California), 20-35=California zones 1-16, 36=Canada
MI5StatusCompressor1Compressor 1 statusRead1=Available, 2=off SAT ok, 3=off checking SAT, 4=off Econ Potential, 5=off DXLL, 6=off LCLO
MI6StatusCompressor2Compressor 2 statusRead1=Available, 2=off SAT ok, 3=off checking SAT, 4=off Econ Potential, 5=off DXLL, 6=off LCLO
MOmin1OccupancyCommandOccupancy (fan) commandCommand1=Enabled, 2=Disabled, 3=Relinquished
MO2PurgeCommandPurge request (when PurgeOperationEn is on)Command1=Enabled, 2=Disabled, 3=Relinquished
MOmin3W1CommandHeating commandCommand1=Enabled, 2=Disabled, 3=Relinquished
MOmin4Y1CommandStage 1 cooling commandCommand1=Enabled, 2=Disabled, 3=Relinquished
MOmin5Y2CommandStage 2 cooling commandCommand1=Enabled, 2=Disabled, 3=Relinquished
Object ID lookup: Belimo ZIP Economizer point IDs by name

Integration notes

Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.

Questions about the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)

How many BACnet points does the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) have?

This list has 71 BACnet objects: 21 analog inputs, 6 analog outputs, 18 analog values, 12 binary inputs, 3 binary values, 6 multi-state inputs, 5 multi-state outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) BACnet points are writable?

32 of the 71 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.

Where is the official Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) BACnet documentation?

Belimo does not publish it on its own website. This list comes from ZIP Economizer Installation and Operation Manual, BACnet Object Descriptions, revision Tech.Doc 03/21, a copy hosted by ZOT Supply at https://www.zotsupply.com/content/PDFs/Belimo/Economizer/belimo_zip-economizer_operations-manual_en-us.pdf. Ask Belimo or its representative for the current revision.

What are the minimum BACnet points to integrate the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)?

Start with MO 1 OccupancyCommand (Occupancy (fan): 1 enabled, 2 disabled); MO 4 Y1Command (Stage 1 cooling call); MO 5 Y2Command (Stage 2 cooling call); MO 3 W1Command (Heating call); AV 2 SpFreeCoolSAT (Free cooling supply air setpoint); MI 1 OperationMode (Operating mode (free cooling, DCV, etc.)); AI 1 RelPosDmpFb (Damper position feedback, %); AI 2 SAT (Supply air temperature); AI 3 OAT (Outdoor air temperature); MI 2 CurrentAlarm (Most recent active alarm).

How do I enable BMS control of the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)?

Set Com Interface to BACnet Active (default is MP Active); the ECON-ZIP-COM module is required.

Does the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM) need a BACnet heartbeat or have a communication timeout?

AV 18 BusWatchdog sets a bus timeout of 0-3600 s (0 = off, the default). When it trips, the commandable objects fall back to their relinquish defaults.

Can the BMS supply sensor values to the Belimo ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)?

AO 1-5 accept CO2, outdoor and return humidity and temperature from the network; they read 8888 (no value) until written.

How do I check these points on the real ZIP Economizer (ECON-ZIP-BASE + ECON-ZIP-COM)?

Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.

More Belimo BACnet points lists

Source: ZIP Economizer Installation and Operation Manual, BACnet Object Descriptions · rev. Tech.Doc 03/21. Object names, instances and units are reproduced as published; descriptions are our own.