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Energy recovery / DOAS heat pump ventilation unit controller · BACnet points list
Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) BACnet points list
Updated 6 November 2026
ZQYRA is a discontinued Reznor ventilation unit with an energy recovery wheel and a heat pump. With option BHB8 its controller is reachable on BACnet MS/TP. The BMS can switch the unit on and off, shut it down, reset alarms and runtimes, and write dewpoint changeover and discharge, outdoor and zone changeover setpoints. It reads zone, outdoor, discharge and exhaust temperatures and dewpoints, unit mode, the on/off command source, compressor and heating output, runtimes, digital inputs, relays and alarms.
This page lists 78 BACnet objects for the Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) — 22 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Reznor’s own free documentation, linked below.
- Manufacturer
- Reznor
- Model
- ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)
- Equipment
- Energy recovery / DOAS heat pump ventilation unit controller
- Equipment type
- Heat pumps
- BACnet objects
- 78 (22 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Default device instance
- 77000
- Also known as
- ZQYRA, ZQYRA-IOM, 260414-A, BHB8, Reznor ZQYRA
Reference only, provided as-is: verify against Reznor’s current documentation and the live device before use. Not official Reznor information. Terms of use.
BMS integration notes: Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)
Fit option BHB8 and set the MS/TP address. Switch the unit with BV 1 BAS_OffOn, write the discharge setpoints, and read UnitMode (AV 1001) and UnitCmd (AV 1002) to see why the unit is on or off. Watch the fan pressure switches and the alarm BVs, and reset with BV 41.
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 | BAS_OffOn | BAS on/off command | Write |
| AV 3 | DatSpLoDp | Discharge air setpoint, low dewpoint, 55-75 °F | Write |
| BV 41 | BAS_AlmRst | Alarm reset | Write |
| AV 1001 | UnitMode | Unit mode: 0 off, 1 starting, 2 running... | Read |
| AV 1002 | UnitCmd | Source of the current on/off command | Read |
| BV 2 | SafStatus | Supply fan pressure switch status | Read |
| AV 20 | UnitDat | Unit discharge air temperature | Read |
| BV 14 | AlarmLight | Alarm output relay on | Read |
| BV 28 | ShutdnAlm | Unit shut down; manual restart needed | Read |
Enable & remote start
BV 1 BAS_OffOn turns the unit on or off from the BAS (default off); BV 40 BAS_Shtdwn shuts the unit down. AV 1002 shows which source (DI, BAS, schedule, CO2/VOC, test, alarm, manual) is driving on/off.
Network setup
- BACnet MS/TP needs the optional communication card (option BHB8).
- MSTP SETUP defaults (Table 44): instance 77,000, baud 38,400, MAC 0, Max Masters 127, Max Info Frames 20; press Prg to save to the card, then power cycle.
Watch out for
- After a restart alarm the unit restarts itself after 60 minutes; a shutdown alarm needs a manual restart.
- Runtime reset BVs clear stored hours; don't write them cyclically.
Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) 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 | DpCngOvrLt | Wheel Dewpoint Changeover Limit; range 55–65°F, default 59 | °F | Write | |
| AV | 2 | DatSpHiDp | Discharge Air Temperature Setpoint with High Dewpoint; default 58 | °F | Write | |
| AVmin | 3 | DatSpLoDp | DA setpoint, low dewpoint (TempCntrl = 0); range 55-75°F, default 70 | °F | Write | |
| AV | 4 | ActDatSp | Active DA setpoint | °F | Read | |
| AV | 5 | DatHtgLoDp | Discharge Air Temperature Heating Setpoint with Low Dewpoint,; range 55–75°F, default 70 | °F | Write | |
| AV | 6 | DatClgLoDp | Discharge Air Temperature Cooling Setpoint with Low Dewpoint,; default 60 | °F | Write | |
| AV | 7 | OaLoSpLoDp | Outside Air Temperature Low Setpoint with Low Dewpoint; range 55–80°F, default 65 | °F | Write | |
| AV | 8 | OaHiSpLoDp | Outside Air Temperature High Setpoint with Low Dewpoint; default 70 | °F | Write | |
| AV | 9 | DaLoSpLoDp | Discharge Air Temperature Low Setpoint with Low Dewpoint; range 55–75°F, default 58 | °F | Write | |
| AV | 10 | DaHiSpLoDp | Discharge Air Temperature High Setpoint with Low Dewpoint; default 70 | °F | Write | |
| AV | 11 | Zone | Zone temperature (AI_1) | °F | Read | |
| AV | 12 | ZnCngOv | Heating/Cooling Zone Temperature Changeover Setpoint; range 55–80°F | °F | Write | |
| AV | 13 | ZnCngOvDb | Heating/Cooling Zone Temperature Changeover Deadband Setpoint | °F | Write | |
| AV | 14 | OaCngOvr | Heating/Cooling OA Temperature Changeover Setpoint; range 55–80°F, default 65 | °F | Write | |
| AV | 15 | OaCngOvrDb | Heating/Cooling OA Temperature Changeover Deadband Setpoint | °F | Write | |
| AV | 16 | Oat | Outside air temperature (AI_3) | °F | Read | |
| AV | 17 | ErDat | Energy Recovery DAT (AI_4) | °F | Read | |
| AV | 19 | ErDaDp | Energy Recovery DA dewpoint | °F | Read | |
| AVmin | 20 | UnitDat | Unit DAT (AI_2) | °F | Read | |
| AV | 21 | Suction_Temp | Suction Line Temperature | °F | Read | |
| AV | 22 | ErEat | Energy Recovery Exhaust Air Temperature | °F | Read | |
| AV | 23 | ErEah | Energy Recovery Exhaust Air Humidty | %RH | Read | |
| AV | 24 | ErEadp | Energy Recovery Exhaust Air Dewpoint | °F | Read | |
| AVmin | 1001 | UnitMode | Unit Operation Mode | Read | 0=Off, 1=Starting, 2=Running, 3=Test, 4=Cripple, 5=SysRestart, 6=SysShutdwn | |
| AVmin | 1002 | UnitCmd | Unit On/Off Command Status | Read | 0=DI Off, 1= DI On, 2=BAS On, 3=BAS OFF, 4=Local Sch On, 5=Local Sch Off, 6=VOC/CO2 On, 7=VOC/CO2 Off, 8=Test On, 9=Test Off, 10=Alarm Off, 11=Shtdwn DI Off, 12=Manual On, 13=Manual Off, 14=BAS Shutdown | |
| AV | 1003 | CompPerc | Modulation Compressor Output Percentage | % | Read | |
| AV | 1004 | VocCo2 | VOC or CO2 Sensor Output | Read | ||
| AV | 1005 | FanRunTm | Fan Runtime | Read | ||
| AV | 1006 | CompRunTm | Compressor Runtime | Read | ||
| AV | 1007 | ErwRunTm | Energy Recovery Wheel Runtime | Read | ||
| AV | 1008 | PreHtRunTm | Preheat Runtime Time | Read | ||
| AV | 1009 | FiltrRunTm | Filter Runtime | Read | ||
| AV | 1010 | TempCntrl | Temp Control Type | Read | 0=Dewpoint (Default), 1=Dewpoint with OA changeover of Htg/Clg Setpoint, 2=Dewpoint with OA reset of Htg/Clg Setpoint, 3=Dewpoint with Space changeover of Htg/Clg Setpoint | |
| AV | 1011 | HP_Status | Heatpump Status | Read | 0=Off, 1=Heating, 2=Cooling | |
| AV | 1012 | HOA_Stat | HOA Status | Read | 0=Off, 1=Auto, 2=Hand, 3=Off | |
| AV | 1013 | Supp_Htg_Perc | Supplemental Heating Percentage | % | Read | |
| BVmin | 1 | BAS_OffOn | BAS OffOn command; default Off | Write | On/Off | |
| BVmin | 2 | SafStatus | Supply Fan Pressure Switch Status (DI_1) | Read | ||
| BV | 3 | EafStatus | Exhaust Fan Pressure Switch Status (DI_2) | Read | ||
| BV | 4 | DiOffOn | DI On/Off Switch Status (DI_3) | Read | ||
| BV | 5 | CompAlmDi | Digital Compressor General Alarm DI Status (DI_4) | Read | ||
| BV | 6 | SafetyDI | Safety Input DI Status (DI_5) | Read | ||
| BV | 7 | FanGenAlDi | Fan General Alarm DI Status (DI_6) | Read | ||
| BV | 8 | FilterDi | Filter DI Status (DI_7) | Read | ||
| BV | 9 | FanCmd | Fan Relay (DO-1) | Read | ||
| BV | 10 | ErwCmd | Energy Recovery Wheel Relay (DO-3) | Read | ||
| BV | 11 | CompCmd | Compressor Command | Read | ||
| BV | 12 | RevVlvCmd | Reversing Valve Cmd Relay (DO-2) | Read | ||
| BV | 13 | PreHtCmd | Auxiliary heat stage output Relay (DO-4) | Read | ||
| BVmin | 14 | AlarmLight | Alarm output Relay (DO-5) | Read | ||
| BV | 15 | SafFailAlm | Supply Air Fan Failure Alarm (critical alarm) | Read | ||
| BV | 16 | EafFailAlm | Exhaust Air Fan Failure Alarm (critical alarm) | Read | ||
| BV | 17 | SafetyAlm | Safety Input Alarm (critical alarm) | Read | ||
| BV | 18 | OatAlm | Outside air temperature sensor failure Alarm (cripple) | Read | ||
| BV | 19 | UnitDatAlm | Unit discharge air temperature sensor failure Alarm (critical alarm) | Read | ||
| BV | 20 | ErDatAlm | Energy Recovery DAT sensor failure (cripple) | Read | ||
| BV | 21 | ErDahAlm | ER DA Humidity failure (cripple) | %RH | Read | |
| BV | 22 | RevVlvAlm | Reversing Valve Failure Alarm (cripple) | Read | ||
| BV | 23 | DirtyFiltr | Dirty Filter Alarm (General) | Read | ||
| BV | 24 | FanGenAlm | Fan General Alarm (critical alarm) | Read | ||
| BV | 25 | CompGenAlm | Digital Compressor General Alarm (cripple) | Read | ||
| BV | 26 | TestMode | Unit in Test Mode (General) | Read | ||
| BV | 27 | RestartAlm | System in Restart Mode (system will auto-restart after 60 minutes) | Read | ||
| BVmin | 28 | ShutdnAlm | System in Shutdown Mode (manual restart required) | Read | ||
| BV | 29 | RstAllRts | Reset All Runtimes | Write | ||
| BV | 30 | RstPhtRts | Reset PreHt Runtimes | Write | ||
| BV | 31 | RstFanRts | Reset Fan Runtimes | Write | ||
| BV | 32 | RstCompRts | Reset Comp Runtimes | Write | ||
| BV | 33 | RstFltrRts | Reset Filter Runtm | Write | ||
| BV | 34 | RstErwRts | Reset ERW Runtimes | Write | ||
| BV | 35 | FanHrsAlm | Fan Run Hours Alarm (general) | Read | ||
| BV | 36 | CompHrsAlm | Compressor Run Hours Alarm (general) | Read | ||
| BV | 37 | ErwHrsAlm | Wheel Run Hours Alarm (general) | Read | ||
| BV | 38 | PhtHrsAlm | Preheat Run Hours Alarm (general) | Read | ||
| BV | 39 | FiltHrsAlm | Filter Run Hours Alarm (general) | Read | ||
| BV | 40 | BAS_Shtdwn | BAS Unit Shutdown | Write | ||
| BVmin | 41 | BAS_AlmRst | BAS Alarm Reset | Write | ||
| BV | 42 | Supp_Htg_Cmd | Supplemental Heating Command | Read |
No points match these filters.
Object ID lookup: Reznor ZQYRA Energy Recovery Ventilation Unit point IDs by name
AV1DpCngOvrLtAV2DatSpHiDpAV3DatSpLoDpAV4ActDatSpAV5DatHtgLoDpAV6DatClgLoDpAV7OaLoSpLoDpAV8OaHiSpLoDpAV9DaLoSpLoDpAV10DaHiSpLoDpAV11ZoneAV12ZnCngOvAV13ZnCngOvDbAV14OaCngOvrAV15OaCngOvrDbAV16OatAV17ErDatAV19ErDaDpAV20UnitDatAV21Suction_TempAV22ErEatAV23ErEahAV24ErEadpAV1001UnitModeAV1002UnitCmdAV1003CompPercAV1004VocCo2AV1005FanRunTmAV1006CompRunTmAV1007ErwRunTmAV1008PreHtRunTmAV1009FiltrRunTmAV1010TempCntrlAV1011HP_StatusAV1012HOA_StatAV1013Supp_Htg_PercBV1BAS_OffOnBV2SafStatusBV3EafStatusBV4DiOffOnBV5CompAlmDiBV6SafetyDIBV7FanGenAlDiBV8FilterDiBV9FanCmdBV10ErwCmdBV11CompCmdBV12RevVlvCmdBV13PreHtCmdBV14AlarmLightBV15SafFailAlmBV16EafFailAlmBV17SafetyAlmBV18OatAlmBV19UnitDatAlmBV20ErDatAlmBV21ErDahAlmBV22RevVlvAlmBV23DirtyFiltrBV24FanGenAlmBV25CompGenAlmBV26TestModeBV27RestartAlmBV28ShutdnAlmBV29RstAllRtsBV30RstPhtRtsBV31RstFanRtsBV32RstCompRtsBV33RstFltrRtsBV34RstErwRtsBV35FanHrsAlmBV36CompHrsAlmBV37ErwHrsAlmBV38PhtHrsAlmBV39FiltHrsAlmBV40BAS_ShtdwnBV41BAS_AlmRstBV42Supp_Htg_Cmd
Integration notes
- The R/W column is printed once per group; it is carried down to the rows below it.
- Ranges and defaults are shown as printed; where the range cell spans several rows it is only given on the first.
- Some setpoints only apply in one temperature control type (TempCntrl, AV 1010): OA changeover (1), OA reset (2) or space changeover (3).
- Alarm BVs are marked critical, cripple or general in the table.
- Engineering units are taken from the range column where printed.
- Source: Table 45 BACnet MSTP Points List, IOM pages 68-69.
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 ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) 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 Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)
How many BACnet points does the Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) have?
This list has 78 BACnet objects: 36 analog values, 42 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) BACnet points are writable?
22 of the 78 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 Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8) BACnet documentation?
The source is ZQYRA Installation/Operation/Maintenance - Table 45 BACnet MSTP Points List (ZQYRA-IOM (05-26) 260414-A), revision 2026-05, published free by Reznor at https://assets.reznorhvac.com/download/509BCA8A-35FC-409F-AC22-E9A172ED80CB.
What are the minimum BACnet points to integrate the Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)?
Start with BV 1 BAS_OffOn (BAS on/off command); AV 3 DatSpLoDp (Discharge air setpoint, low dewpoint, 55-75 °F); BV 41 BAS_AlmRst (Alarm reset); AV 1001 UnitMode (Unit mode: 0 off, 1 starting, 2 running); AV 1002 UnitCmd (Source of the current on/off command); BV 2 SafStatus (Supply fan pressure switch status); AV 20 UnitDat (Unit discharge air temperature); BV 14 AlarmLight (Alarm output relay on); BV 28 ShutdnAlm (Unit shut down; manual restart needed).
How do I enable BMS control of the Reznor ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)?
BV 1 BAS_OffOn turns the unit on or off from the BAS (default off); BV 40 BAS_Shtdwn shuts the unit down. AV 1002 shows which source (DI, BAS, schedule, CO2/VOC, test, alarm, manual) is driving on/off.
How do I check these points on the real ZQYRA Energy Recovery Ventilation Unit (BACnet MS/TP Option BHB8)?
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 Reznor BACnet points lists
- Packaged rooftop unit / DOAS controller
Reznor MAPS / MAPS III / MAPS IV IQ Controller, Options D15 / D16 / D17 / D18 (BACnet point list)
Reznor MAPS III units (from March 2010) and MAPS IV units with control option D15, D16, D17 or D18 and the IQ system controller (software 2.01), including the optional energy recovery module (ERM).
Also known as: MAPS III, MAPS IV, MAPSIII&IV-D15-D16-D17-D18-D19-D21, RCB, RDB, RDCB, RDDB, RECB, REDB, RCC, RDC, RDCC, RDDC, RECC, REDC, CP-MAPS-D15/D16/D17/D18, 254003R8, IQ Controller, IQ System Controller, D15, D16, D17, D18, MAPS ERM - Packaged rooftop unit / DOAS controller
Reznor MAPS III / MAPS IV Control Option D19 (BACnet point list)
Reznor MAPS III and MAPS IV modular air processing units (packaged DX rooftop units for high outside air) with control option D19.
Also known as: MAPS III, MAPS IV, MAPSIII&IV-D15-D16-D17-D18-D19-D21, RCB, RDB, RDCB, RDDB, RECB, REDB, RCC, RDC, RDCC, RDDC, RECC, REDC, CP-MAPSIII-D19, D303069, Option D19, D19 - Packaged rooftop unit / DOAS controller
Reznor MAPS III / MAPS IV Control Option D21 (BACnet point list)
Reznor MAPS III and MAPS IV modular air processing units (packaged DX rooftop units) with control option D21 (space temperature control).
Also known as: MAPS III, MAPS IV, MAPSIII&IV-D15-D16-D17-D18-D19-D21, RCB, RDB, RDCB, RDDB, RECB, REDB, RCC, RDC, RDCC, RDDC, RECC, REDC, CP-MAPSIII-D21, D303070, Option D21, D21 - Air handling unit / make-up air controller
Reznor PREEVA Air Handler Controls CP-AHU D19 / D21 / D22 (BACnet MS/TP Option BHB8)
Discontinued Reznor PREEVA air handlers (PDH, PEH, PXH, RDH, REH, RHH, RXH, SDH, SHH) with control option D19, D21 or D22 and the BACnet MS/TP communication card (option BHB8).
Also known as: CP-AHU D19_D21_D22, D303072-A, PREEVA-CONTROLS, D19, D21, D22, BHB8, PDH, PEH, PXH, RDH, REH, RHH, RXH, SDH, SHH, Preeva - Packaged rooftop unit controller
Reznor R7DA and Y Series Rooftop Controls, Options D19 / D21 / D22 / D23 (BACnet card BHB8 / BHB9)
Reznor R7DA packaged rooftop units and Y series packaged rooftop equipment with control option D19, D21, D22 or D23 and a BACnet MS/TP (BHB8) or BACnet IP/Ethernet (BHB9) card.
Also known as: R7DA, Reznor Y series, R7DA-Y-D19-D21-D22-D23, 1024315-C, CP-P125-R7DA-D19-D21-D22-D23, 1024315-B, D19, D21, D22, D23, BHB8, BHB9, P125
Source: ZQYRA Installation/Operation/Maintenance - Table 45 BACnet MSTP Points List · ZQYRA-IOM (05-26) 260414-A · rev. 2026-05. Object names, instances and units are reproduced as published; descriptions are our own.