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Boiler controller gateway · BACnet points list
Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode BACnet points list
Updated 28 October 2026
A ProtoNode FPC-N34 reads the SlimFit Series 1 SOLA control over Modbus RTU and presents it as a BACnet IP or BACnet MS/TP device with 124 analog values and 20 binary values. Most objects are status readbacks; points marked (W) take writes, including CH enable, the remote thermostat call, the CH and lead-lag setpoints and the outdoor reset curve values.
This page lists 144 BACnet objects for the Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode — 21 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Weil-McLain’s own free documentation, linked below.
- Manufacturer
- Weil-McLain
- Model
- SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode
- Equipment
- Boiler controller gateway
- Equipment type
- Boilers & water heaters
- BACnet objects
- 144 (21 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- Also known as
- SlimFit Series 1, SlimFit SOLA, SOLA, ProtoNode FPC-N34, ProtoNode FPC-N35, ProtoNode
BMS integration notes: Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode
Write CH Enable and the remote thermostat call, set the CH setpoint (or the lead-lag setpoint on a lead-lag master), then read back CH status, burner state, outlet temperature, firing rate and the lockout code. Writable objects carry (W) in their name.
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.
| Object | Name | Why | Access |
|---|---|---|---|
| BV 1 | CH Enable (W) | Central heat enable | Write |
| BV 7 | CH Remote Stat (W) | Call for heat from the BMS | Write |
| AV 37 | CH Setpoint (W) | Central heat water setpoint | Write |
| AV 84 | Lead Lag Setpoint (W) | Setpoint for a lead-lag (cascade) master | Write |
| AV 40 | CH Status | Central heat status code | Read |
| AV 20 | Burner Control State Status | Burner sequence state | Read |
| AV 100 | Outlet Sensor Status | Outlet water temperature | Read |
| AV 60 | Firing Rate Status | Burner firing rate | Read |
| AV 90 | Lockout Status | Lockout status code | Read |
Enable & remote start
BV 1 CH Enable (W) and BV 7 CH Remote Stat (W) are the writable enable and call-for-heat objects. The supplement does not explain how they interact with the boiler's local enable settings.
Network setup
- Device instance, MAC address and baud rate are set on the ProtoNode (see the ProtoNode start-up guide); this supplement does not list them.
- All analog objects are AVs; readback-only ones carry 'Status' in their name.
Watch out for
- No units or state texts are given; temperatures, percentages and codes must be checked against the boiler display.
- AV 101 Password (W) and AV 102 PSWD Status exist, but the supplement does not explain them.
Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AV | 1 | 4-20mA Remote Control Input Status | Read | |||
| AV | 2 | Active CH Setpoint | Temperature value | Read | ||
| AV | 3 | Active DHW Setpoint Status | Temperature value | Read | ||
| AV | 4 | Active LL Operating Point Status | Temperature value | Read | ||
| AV | 5 | Active LL Setpoint Status | Temperature value | Read | ||
| AV | 6 | Active System Operating Point Status | Temperature value | Read | ||
| AV | 7 | Active System Setpoint Status | Temperature value | Read | ||
| AV | 8 | Alarm Record 1 Status | Read | |||
| AV | 9 | Alarm Record 2 Status | Read | |||
| AV | 10 | Alarm Record 3 Status | Read | |||
| AV | 11 | Alarm Record 4 Status | Read | |||
| AV | 12 | Alarm Record 5 Status | Read | |||
| AV | 13 | Annunciator First Out Status | First-out annunciator code | Read | ||
| AV | 14 | Auxiliary 2 Pump Cycle Count | Read | |||
| AV | 15 | Auxiliary 2 Pump Cycle Count Status | Read | |||
| AV | 16 | Auxiliary Pump Cycle Count | Read | |||
| AV | 17 | Auxiliary Pump Cycle Count Status | Read | |||
| AV | 18 | Boiler Pump Cycle Count | Read | |||
| AV | 19 | Boiler Pump Cycle Count Status | Read | |||
| AVmin | 20 | Burner Control State Status | Burner control state code | Read | ||
| AV | 21 | Burner Control Status | Read | |||
| AV | 22 | Burner Cycle Count | Read | |||
| AV | 23 | Burner Cycle Count Status | Read | |||
| AV | 24 | Burner Run Time | Hours value | Read | ||
| AV | 25 | Burner Run Time Status | Hours value | Read | ||
| AV | 26 | CH Burner Demand Status | Read | |||
| AV | 27 | CH Heat Demand Status | Read | |||
| AV | 28 | CH ODR Low Water Temperature (W) | Temperature value | Write | ||
| AV | 29 | CH ODR Low Water Temperature Status | Temperature value | Read | ||
| AV | 30 | CH ODR Max Outdoor Temperature (W) | Temperature value | Write | ||
| AV | 31 | CH ODR Max Outdoor Temperature Status | Temperature value | Read | ||
| AV | 32 | CH ODR Min Outdoor Temp (W) | Temperature value | Write | ||
| AV | 33 | CH ODR Min Outdoor Temp Status | Temperature value | Read | ||
| AV | 34 | CH Pump Cycle Count | Read | |||
| AV | 35 | CH Pump Cycle Count Status | Read | |||
| AV | 36 | CH Requested Rate Status | Percent value | Read | ||
| AVmin | 37 | CH Setpoint (W) | Central heat setpoint | Write | ||
| AV | 38 | CH Setpoint Status | Read | |||
| AV | 39 | CH Setpoint Source Status | Temperature value | Read | ||
| AVmin | 40 | CH Status | Central heat status code | Read | ||
| AV | 41 | CH Time of Day Setpoint (W) | Temperature value | Write | ||
| AV | 42 | CH Time of Day Setpoint Status | Temperature value | Read | ||
| AV | 43 | Controller Cycle Count Status | Read | |||
| AV | 44 | Controller Run Time Status | Hours value | Read | ||
| AV | 45 | Demand Source Status | Read | |||
| AV | 46 | DHW Status | Read | |||
| AV | 47 | DHW Burner Demand Status | Read | |||
| AV | 48 | DHW Heat Demand Status | Read | |||
| AV | 49 | DHW Priority Count Status | Read | |||
| AV | 50 | DHW Pump Cycle Count | Read | |||
| AV | 51 | DHW Pump Cycle Count Status | Read | |||
| AV | 52 | DHW Sensor Status | Temperature value | Read | ||
| AV | 53 | DHW Setpoint | Temperature value | Read | ||
| AV | 54 | DHW Setpoint Source Status | Read | |||
| AV | 55 | DHW Setpoint Status | Temperature value | Read | ||
| AV | 56 | DHW Time of Day Setpoint (W) | Temperature value | Write | ||
| AV | 57 | DHW Time of Day Setpoint Status | Temperature value | Read | ||
| AV | 58 | DHW requested Rate Status | Read | |||
| AV | 59 | Fan Speed Status | Read | |||
| AVmin | 60 | Firing Rate Status | Burner firing rate | Read | ||
| AV | 61 | Flame Signal Status | Read | |||
| AV | 62 | Inlet Sensor Status | Inlet water temperature | Read | ||
| AV | 63 | Lead Boiler Address Status | Read | |||
| AV | 64 | Lead Lag Active Service Status | Read | |||
| AV | 65 | Lead Lag CH 20mA Water Temp (W) | Temperature value | Write | ||
| AV | 66 | Lead Lag CH 20mA Water Temp Status | Temperature value | Read | ||
| AV | 67 | Lead Lag CH 4mA Water Temp (W) | Temperature value | Write | ||
| AV | 68 | Lead Lag CH 4mA Water Temp Status | Temperature value | Read | ||
| AV | 69 | Lead Lag CH ODR Low Water Temperature (W) | Temperature value | Write | ||
| AV | 70 | Lead Lag CH ODR Low Water Temperature Status | Temperature value | Read | ||
| AV | 71 | Lead Lag CH ODR Max Outdoor Temperature (W) | Temperature value | Write | ||
| AV | 72 | Lead Lag CH ODR Max Outdoor Temperature Status | Temperature value | Read | ||
| AV | 73 | Lead Lag CH ODR Min Outdoor Temperature (W) | Temperature value | Write | ||
| AV | 74 | Lead Lag CH ODR Min Outdoor Temperature Status | Temperature value | Read | ||
| AV | 75 | Lead Lag CH Setpoint Source (W) | Write | |||
| AV | 76 | Lead Lag CH Setpoint Source Status | Read | |||
| AV | 77 | Lead Lag DHW Setpoint | Temperature value | Read | ||
| AV | 78 | Lead Lag DHW Setpoint Status | Temperature value | Read | ||
| AV | 79 | Lead Lag Master Enable Status | Read | |||
| AV | 80 | Lead Lag Master Setpoint Source Status | Read | |||
| AV | 81 | Lead Lag Master Status | Read | |||
| AV | 82 | Lead Lag Modulation Backup Sensor | Read | |||
| AV | 83 | Lead Lag Modulation Backup Sensor Status | Read | |||
| AVmin | 84 | Lead Lag Setpoint (W) | Lead-lag master setpoint | Write | ||
| AV | 85 | Lead Lag Setpoint Status | Temperature value | Read | ||
| AV | 86 | Lead Lag Slave Enable Status | Read | |||
| AV | 87 | Lead Lag Slave Status | Read | |||
| AV | 88 | Lead Lag Time of Day Setpoint (W) | Temperature value | Write | ||
| AV | 89 | Lead Lag Time of Day Setpoint Status | Temperature value | Read | ||
| AVmin | 90 | Lockout Status | Lockout code | Read | ||
| AV | 91 | Lockout Status1 | Read | |||
| AV | 92 | Lockout Status2 | Read | |||
| AV | 93 | Lockout Status3 | Read | |||
| AV | 94 | Lockout Status4 | Read | |||
| AV | 95 | Lockout Status5 | Read | |||
| AV | 96 | Outdoor Frost Protection Setpoint (W) | Temperature value | Write | ||
| AV | 97 | Outdoor Frost Protection Setpoint Status | Temperature value | Read | ||
| AV | 98 | Outdoor Sensor Status Status | Read | |||
| AV | 99 | Outdoor Temperature Status | Outdoor temperature | Read | ||
| AVmin | 100 | Outlet Sensor Status | Outlet water temperature | Read | ||
| AV | 101 | Password (W) | Password entry for protected writes | Write | ||
| AV | 102 | PSWD Status | Read | |||
| AV | 103 | S5 (Header) Sensor Status | Temperature value | Read | ||
| AV | 104 | Slave 1 Firing Rate Status | Percent value | Read | ||
| AV | 105 | Slave 1 State Status | Read | |||
| AV | 106 | Slave 2 Firing Rate Status | Percent value | Read | ||
| AV | 107 | Slave 2 State Status | Read | |||
| AV | 108 | Slave 3 Firing Rate Status | Percent value | Read | ||
| AV | 109 | Slave 3 State Status | Read | |||
| AV | 110 | Slave 4 Firing Rate Status | Percent value | Read | ||
| AV | 111 | Slave 4 State Status | Read | |||
| AV | 112 | Slave 5 Firing Rate Status | Percent value | Read | ||
| AV | 113 | Slave 5 State Status | Read | |||
| AV | 114 | Slave 6 Firing Rate Status | Percent value | Read | ||
| AV | 115 | Slave 6 State Status | Read | |||
| AV | 116 | Slave 7 Firing Rate Status | Percent value | Read | ||
| AV | 117 | Slave 7 State Status | Read | |||
| AV | 118 | Slave 8 Firing Rate Status | Percent value | Read | ||
| AV | 119 | Slave 8 State Status | Read | |||
| AV | 120 | Stack Sensor Status | Temperature value | Read | ||
| AV | 121 | System Pump Cycle Count | Read | |||
| AV | 122 | System Pump Cycle Count Status | Read | |||
| AV | 123 | Warm Weather Shutdown Setpoint | Temperature value | Read | ||
| AV | 124 | Warm Weather Shutdown Setpoint Status | Temperature value | Read | ||
| BVmin | 1 | CH Enable (W) | Central heat enable command | Write | ||
| BV | 2 | CH Enable Status | Central heat enable readback | Read | ||
| BV | 3 | CH Frost Protection Enable (W) | On/off value | Write | ||
| BV | 4 | CH Frost Protection Enable Status | On/off value | Read | ||
| BV | 5 | CH Outdoor Reset Enable (W) | On/off value | Write | ||
| BV | 6 | CH Outdoor Reset Enable Status | On/off value | Read | ||
| BVmin | 7 | CH Remote Stat (W) | Remote thermostat (call for heat) command | Write | ||
| BV | 8 | CH Remote Status | Remote thermostat readback | Read | ||
| BV | 9 | DHW Enable | On/off value | Read | ||
| BV | 10 | DHW Enable Status | On/off value | Read | ||
| BV | 11 | DHW Frost Protection Enable | On/off value | Read | ||
| BV | 12 | DHW Frost Protection Enable Status | On/off value | Read | ||
| BV | 13 | Htemp HI Alarm | On/off value | Read | ||
| BV | 14 | Htemp Low Alarm | On/off value | Read | ||
| BV | 15 | Lead Lag Operation Switch (W) | Lead-lag operation on/off | Write | ||
| BV | 16 | Lead Lag Operation Switch Status | On/off value | Read | ||
| BV | 17 | ODRTemp Hi Alarm | On/off value | Read | ||
| BV | 18 | ODTTemp Low Alarm | On/off value | Read | ||
| BV | 19 | Warm Weather Shutdown Enable | On/off value | Read | ||
| BV | 20 | Warm Weather Shutdown Enable Status | On/off value | Read |
No points match these filters.
Integration notes
- This supplement only lists the objects; device instance, MAC address and baud rate are set on the ProtoNode as described in its start-up guide, which is a separate document.
- The same object list is served over BACnet IP or BACnet MS/TP, depending on how the ProtoNode is set up.
- No units or state texts are given. The LonWorks types in the source show which values are temperatures, percentages or hours.
- Writable objects are the ones the supplement marks (W); every other object is a readback.
- Most writable settings have a matching '... Status' readback object.
- Evergreen, SlimFit 550-750 and SlimFit 1000-2000 Series 2 and SVF boilers use a different object list.
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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode 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 Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode
How many BACnet points does the Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode have?
This list has 144 BACnet objects: 124 analog values, 20 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode BACnet points are writable?
21 of the 144 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 Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode BACnet documentation?
The source is ProtoNode FPC-N34 and ProtoNode FPC-N35 Complete Point List Supplement (Weil-McLain) (T17022), revision Document Revision 7.D, January 2019, published free by Weil-McLain at https://www.weil-mclain.com/wp-content/uploads/ProtoNode-Complete-Point-List-Supplement-JAN19_1.pdf.
What are the minimum BACnet points to integrate the Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode?
Start with BV 1 CH Enable (W) (Central heat enable); BV 7 CH Remote Stat (W) (Call for heat from the BMS); AV 37 CH Setpoint (W) (Central heat water setpoint); AV 84 Lead Lag Setpoint (W) (Setpoint for a lead-lag (cascade) master); AV 40 CH Status (Central heat status code); AV 20 Burner Control State Status (Burner sequence state); AV 100 Outlet Sensor Status (Outlet water temperature); AV 60 Firing Rate Status (Burner firing rate); AV 90 Lockout Status (Lockout status code).
How do I enable BMS control of the Weil-McLain SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode?
BV 1 CH Enable (W) and BV 7 CH Remote Stat (W) are the writable enable and call-for-heat objects. The supplement does not explain how they interact with the boiler's local enable settings.
How do I check these points on the real SlimFit 1000-2000 Series 1 (SOLA) - ProtoNode?
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 Weil-McLain BACnet points lists
Source: ProtoNode FPC-N34 and ProtoNode FPC-N35 Complete Point List Supplement (Weil-McLain) · T17022 · rev. Document Revision 7.D, January 2019. Object names, instances and units are reproduced as published; descriptions are our own.