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Boiler controller · BACnet points list

Contemporary Controls Lochinvar Crest boiler via BASgatewayLX BACnet points list

Updated 12 November 2026

Short answer

Gateway profile for the Lochinvar Crest: 59 objects (18 AI, 6 AO, 25 BI, 10 BO), 40 polled by default. Boiler Enable and Tank Thermostat are polled outputs; the rate/setpoint command, BMS temperature inputs and configuration bits are unpolled outputs. Inputs cover the safety switches, both flames and blowers, pumps, gas valves, temperatures, firing rate and the status, blocking and lockout codes.

This page lists 59 BACnet objects for the Contemporary Controls Lochinvar Crest boiler via BASgatewayLX — 16 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Contemporary Controls’s own free documentation, linked below.

Manufacturer
Contemporary Controls
Model
Lochinvar Crest boiler via BASgatewayLX
Equipment
Boiler controller
Equipment type
Boilers & water heaters
BACnet objects
59 (16 writable)
Transport
BACnet IP
Firmware
Not stated
Also known as
Crest, Lochinvar Crest Modbus, FBN Crest
Source document
BASgatewayLX Modbus device profile Lochinvar_Crest_Boiler · Lochinvar_Crest_Boiler_LX.csv
Download CSV 59 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

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

BMS integration notes: Contemporary Controls Lochinvar Crest boiler via BASgatewayLX

Integration in brief

Write Boiler Enable; for a BMS firing rate or setpoint, enable AO 41 and its configuration bit (BO 49). Read run-time contacts, outlet temperature, firing rate and the codes.

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
BO 1Boiler EnableBoiler enable from the BMSCommand
AO 410-10 Volt Input / Rate Command / Setpoint CommandRate or setpoint command (0-10 V equivalent)Command
BO 49Confi guration Bits Rate Command / 10 - 10V Input / Setpoint CommandUse the BMS rate/setpoint commandCommand
BI 16Run-time ContactsRun-time contacts (burner on)Read
AI 33Outlet TemperatureOutlet temperatureRead
AI 34Inlet TemperatureInlet temperatureRead
AI 32Outlet SetpointOutlet setpointRead
AI 36Firing RateFiring rateRead
BI 17Alarm ContactsAlarm contactsRead
AI 40Boiler Lockout CodeLockout codeRead

Enable & remote start

Boiler Enable (BO 1) is polled by default. A BMS rate/setpoint command (AO 41) only applies when its configuration bit (BO 49) is set; both are unpolled in the published profile.

Network setup

Watch out for

Contemporary Controls Lochinvar Crest boiler via BASgatewayLX 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.

Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.

59 of 59 shown
Type
Access
Show
Contemporary Controls Lochinvar Crest boiler via BASgatewayLX BACnet Points List
DescriptionStates
BOmin1Boiler EnableModbus 000001Command
BO2Tank ThermostatModbus 000005Command
BI3Manual Reset High LimitModbus 100001Read
BI4Flow SwitchModbus 100002Read
BI5Gas Pressure SwitchModbus 100003Read
BI6Louver Proving SwitchModbus 100004Read
BI7Blower Proving Switch 1Modbus 100005Read
BI8Blocked Drain SwitchModbus 100006Read
BI9Flame 1Modbus 100008Read
BI10EnableModbus 100009Read
BI11Tank ThermostatModbus 100010Read
BI12Blocked FlueModbus 100011Read
BI13Blower Proving Switch 2Modbus 100013Read
BI14Flue Damper Proving SwitchModbus 100021Read
BI15Flame 2Modbus 100023Read
BImin16Run-time ContactsModbus 100033Read
BImin17Alarm ContactsModbus 100034Read
BI18SH PumpModbus 100034Read
BI19HWG PumpModbus 100036Read
BI20Louver RelayModbus 100037Read
BI21Gas Valve 1 0Modbus 100038Read
BI22System PumpModbus 100039Read
BI23Vent Damper RelayModbus 100044Read
BI24Gas Valve 2Modbus 100046Read
BI25Blower #1 PowerModbus 100049Read
BI26Blower #2 PowerModbus 100050Read
BI27Spark IgniterModbus 100051Read
AI28System / Cascade SetpointModbus 300004°CRead
AI29System Pump Speed InModbus 300005%Read
AI30Cascade Total PowerModbus 300006%Read
AI31Cascade Current PowerModbus 300007%Read
AImin32Outlet SetpointModbus 300008°CRead
AImin33Outlet TemperatureModbus 300009°CRead
AImin34Inlet TemperatureModbus 300010°CRead
AI35Flue TemperatureModbus 300011°CRead
AImin36Firing RateModbus 300012%Read
AI37Boiler Pump Speed OutModbus 300013%Read
AI38Boiler Status CodeModbus 300014Read
AI39Boiler Blocking CodeModbus 300015Read
AImin40Boiler Lockout CodeModbus 300016Read
AOmin410-10 Volt Input / Rate Command / Setpoint CommandModbus 400003; not polled by default%Command
AO42Tank SetpointModbus 400004; not polled by default°CCommand
AO43Tank TemperatureModbus 400005; not polled by default°CCommand
AO44Outdoor TemperatureModbus 400006; not polled by default°CCommand
AO45System Supply TemperatureModbus 400007; not polled by default°CCommand
AO46System Return TemperatureModbus 400008; not polled by default°CCommand
BO47Confi guration Bits Boiler EnableModbus 400001 bit 0; not polled by defaultCommand
BO48Confi guration Bits Tank ThermostatModbus 400001 bit 1; not polled by defaultCommand
BOmin49Confi guration Bits Rate Command / 10 - 10V Input / Setpoint CommandModbus 400001 bit 2; not polled by defaultCommand
BO50Confi guration Bits Tank SetpointModbus 400001 bit 3; not polled by defaultCommand
BO51Confi guration Bits System Supply TemperatureModbus 400001 bit 4; not polled by defaultCommand
BO52Confi guration Bits Outdoor TemperatureModbus 400001 bit 5; not polled by defaultCommand
BO53Confi guration Bits Tank TemperatureModbus 400001 bit 6; not polled by defaultCommand
BO54Confi guration Bits System Return TemperatureModbus 400001 bit 7; not polled by defaultCommand
AI55CoilsModbus 400002; not polled by defaultRead
AI56Discrete Inputs 1 - 16Modbus 300001; not polled by defaultRead
AI57Discrete Inputs 17 - 32Modbus 300002; not polled by defaultRead
AI58Discrete Inputs 33 - 48Modbus 300003; not polled by defaultRead
AI59Discrete Inputs 49 - 64Modbus 300026; not polled by defaultRead
Object ID lookup: Contemporary Controls BASgatewayLX Lochinvar Crest 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 Lochinvar Crest boiler via BASgatewayLX 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 Contemporary Controls Lochinvar Crest boiler via BASgatewayLX

How many BACnet points does the Contemporary Controls Lochinvar Crest boiler via BASgatewayLX have?

This list has 59 BACnet objects: 18 analog inputs, 6 analog outputs, 25 binary inputs, 10 binary outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Contemporary Controls Lochinvar Crest boiler via BASgatewayLX BACnet points are writable?

16 of the 59 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. The source has no read/write column, so this is inferred from object type.

Where is the official Contemporary Controls Lochinvar Crest boiler via BASgatewayLX BACnet documentation?

The source is BASgatewayLX Modbus device profile Lochinvar_Crest_Boiler (Lochinvar_Crest_Boiler_LX.csv), published free by Contemporary Controls at https://www.ccontrols.com/support/dp/Lochinvar_Crest_Boiler.zip.

What are the minimum BACnet points to integrate the Contemporary Controls Lochinvar Crest boiler via BASgatewayLX?

Start with BO 1 Boiler Enable (Boiler enable from the BMS); AO 41 0-10 Volt Input / Rate Command / Setpoint Command (Rate or setpoint command (0-10 V equivalent)); BO 49 Confi guration Bits Rate Command / 10 - 10V Input / Setpoint Command (Use the BMS rate/setpoint command); BI 16 Run-time Contacts (Run-time contacts (burner on)); AI 33 Outlet Temperature (Outlet temperature); AI 34 Inlet Temperature (Inlet temperature); AI 32 Outlet Setpoint (Outlet setpoint); AI 36 Firing Rate (Firing rate); BI 17 Alarm Contacts (Alarm contacts); AI 40 Boiler Lockout Code (Lockout code).

How do I enable BMS control of the Contemporary Controls Lochinvar Crest boiler via BASgatewayLX?

Boiler Enable (BO 1) is polled by default. A BMS rate/setpoint command (AO 41) only applies when its configuration bit (BO 49) is set; both are unpolled in the published profile.

How do I check these points on the real Lochinvar Crest boiler via BASgatewayLX?

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 Contemporary Controls BACnet points lists

Source: BASgatewayLX Modbus device profile Lochinvar_Crest_Boiler · Lochinvar_Crest_Boiler_LX.csv. Object names, instances and units are reproduced as published; descriptions are our own.