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United Technologies Carrier Unit Vent Open Integration Manual

Unit ventilator integration
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CARRIER CORPORATION ©2019
A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 11-808-513-01 · 11/19/2019
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Summary of Contents for United Technologies Carrier Unit Vent Open

  • Page 1 CARRIER CORPORATION ©2019 A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 11-808-513-01 · 11/19/2019...
  • Page 2 Verify that you have the most current version of this document from www.hvacpartners.com or your local Carrier office. Important changes are listed in Document revision history at the end of this document. CARRIER CORPORATION ©2019. All rights reserved throughout the world. i-Vu is a registered trademark of Carrier Corporation.

  • Page 3: Table Of Contents

    Contents Introduction .................................. 1 What is the Unit Vent controller? ........................1 Safety considerations............................1 Wiring inputs and outputs ............................2 Communications wiring .............................. 3 Protocol Overview ..............................3 BACnet MS/TP ..............................4 To set up the Unit Vent for BACnet MS/TP ..................4 Adjusting BACnet MS/TP properties using an Equipment Touch ............

  • Page 4: Introduction

    Introduction What is the Unit Vent controller? The Unit Vent controller is available as an integrated component of a Carrier packaged unit. Its internal application programming provides optimum performance and energy efficiency. Unit Vent enables the unit to run in 100% stand-alone control mode or it can communicate to the Building Automation System (BAS).

  • Page 5: Wiring Inputs And Outputs

    Wiring inputs and outputs Wiring inputs and outputs Type Point Name/ Hardware/ Jumper Position of Terminal Terminal Function Signal Pins Zone Temp/ Rnet Space Temperature - Prime Variable Communicating Zone Temp* IN-1 2 - Gnd Return Air Temperature 10K Thermistor IN-1 Top RAT or CO Sensor...

  • Page 6: Communications Wiring

    Communications wiring Communications wiring Protocol Overview You can set the Unit Vent to communicate 1 of 4 different protocols:  BACnet MS/TP (page 4)  BACnet ARC156 (page 8)  N2 (page 9)  Modbus (page 11)  LonWorks (page 13) The default setting is BACnet MS/TP.

  • Page 7: Bacnet Ms/Tp

    Communications wiring BACnet MS/TP To set up the Unit Vent for BACnet MS/TP The Unit Vent’s latest supported function codes and capabilities are listed on the associated Protocol Implementation Conformance Statement (PICS), Carrier BACnet PICS website http://www.bacnetinternational.net/catalog/index.php?m=28. NOTE This controller counts as a full load on the MS/TP bus. Turn off the power for the Unit Vent by disconnecting power terminals.

  • Page 8: Adjusting Bacnet Ms/Tp Properties Using An Equipment Touch

    Communications wiring Connect the communications wiring to the Comm port in the screw terminals labeled Net +, Net -, and Shield. Wire specifications A dedicated 22 AWG shielded twisted pair wire (EIA 485) ○ Maximum wire length 2000 feet (610 meters) or 32 nodes ○...
  • Page 9 Communications wiring To set the Device Instance number or adjust the Max Masters or Max Info Frames using an Equipment Touch In the Equipment Touch interface, navigate to the Properties Menu screen and click Login. NOTE The following graphic is generic and not specific to your system. Type Touch for the password and click Done.

  • Page 10: Troubleshooting Bacnet Ms/Tp Communication

    Communications wiring On the Communication screen, edit the fields as needed: Click the property box next to BACnet Device Instance, type the new number, and click Done. Click the property box next to Max Masters and/or Max Info Frames, type a new value (1-127), and click Done.

  • Page 11: Bacnet Arc156

    Communications wiring BACnet ARC156 To set up the Unit Vent for BACnet ARC156 Turn off the power for the Unit Vent by disconnecting power terminals. Using the rotary switches, set a unique address. Set the Tens (10's) switch to the tens digit of the address, and set the Ones (1's) switch to the ones digit.

  • Page 12: Troubleshooting Arc156 Communication

    Communications wiring Troubleshooting ARC156 communication The most common communication problems result from not properly following the configuration steps outlined above in this manual. Review all of the steps and use the following list to check your settings. Verify accuracy of the following: ...

  • Page 13: Troubleshooting N2 Communication

    Communications wiring Set communications selector for EIA-485. Set both DIP switches 1 and 2 OFF for 9600 bps. NOTE Use the same baud rate for all devices on the network segment. Set the DIP switches 3 ON and 4 OFF for N2. The following example is set for 9600 bps and N2.

  • Page 14: Modbus

    Communications wiring  Unique rotary address switches 1 – 99. If controllers have duplicate addresses, network communication can be lost.  Unique BACnet Device Instance numbers. Default is 16101XX, with the rotary address switches defining XX. If controllers have duplicate device instance numbers, network communication can be lost. NOTES ...

  • Page 15: Troubleshooting Modbus Communication

    Communications wiring Set DIP switches 1 and 2 for the appropriate communications speed. See table below. NOTE Use the same baud rate for all devices on the network segment. Baud Rate 9,600 bps 19.2 kbps 38.4 kbps 76.8 kbps Set DIP switch 3 OFF and 4 ON for Modbus. The following example is set for 38.4 kbps and Modbus.

  • Page 16: Lonworks

    Communications wiring  Jumper set to EIA-485  Proper connection wiring  Unique rotary address switches 1 – 99. If controllers have duplicate addresses, network communication can be lost. NOTES  If RX LED is solid, then the terminations are incorrect. ...

  • Page 17: To Set Up The Unit Vent For The Lonworks Option Card (#Lon-Oc)

    Communications wiring Refer to Appendix E for the LonWorks Protocol Implementation Conformance Statement (PICS). To set up the Unit Vent for the LonWorks Option Card (#LON-OC) Turn off the power for the Unit Vent by disconnecting power terminals. Using the rotary switches, set a unique address. Set the Tens (10's) switch to the tens digit of the address, and set the Ones (1's) switch to the ones digit.

  • Page 18: Commissioning The Controller For Lonworks Communication

    Communications wiring CAUTION The controller must be OFF before being connected. Connect the LonWorks network to the LonWorks Option Card's 2-pin Net port. NOTE The 2-pin Net port provides TP/FT-10 channel compatibility. The TP/FT-10 or "Free Topology" network type is polarity insensitive. Use 24 to 16 AWG twisted pair wire. Turn on the power for the Unit Vent by connecting power terminals.

  • Page 19: Troubleshooting Lonworks Communication

    Communications wiring Troubleshooting LonWorks communication The most common communication problems result from not properly following the configuration steps outlined above in this manual. Review all of the steps and use the following list to check your settings. Verify accuracy of the following: Hardware settings for LonWorks (8 Data bits, No Parity, and 1 Stop bit): ...

  • Page 20: Sequence Of Operation

    Communications wiring Sequence of Operation The Unit Vent controls mechanical cooling and heating based on its own space temperature input and setpoints. An optional CO (Indoor Air Quality) sensor mounted in the space maximizes occupant comfort when used with the Modulating Mixed Air Damper option.

  • Page 21: Supply Fan

    Communications wiring  System Occupancy Uses the network to obtain an occupancy status value from another controller, which is read over the network and used by this controller. Occupancy Schedules MUST be set to Disable to use this function. NOTE Scheduling can only be controlled from one source. Supply fan You can configure the indoor fan to operate in any 1 of 3 Fan Modes: ...

  • Page 22: Cooling

    Communications wiring Manual Fan Speed Control - When you use the controller with the optional SPT sensor, the automatic fan speed operation may be overridden from the SPT sensor (if applicable). You can select any available motor speed or automatic operation. Unoccupied Fan Cycling - When Unoccupied Fan Cycling is set to Enable (default), the controller operates the equipment’s fan for 1 minute every hour during the unoccupied period.

  • Page 23: Heating

    Communications wiring  OAT is greater than the Cooling Lockout Temperature  If occupied, the SPT is greater than the Occupied Cooling setpoint  If unoccupied, the SPT is greater than the Unoccupied Cooling setpoint If all the above conditions are met, cooling is energized as required, otherwise it is disabled. If cooling is active and the SAT approaches the minimum SAT limit, the cooling valve modulates closed.
  • Page 24 Communications wiring  Fire/Smoke Detector (FSD) is Normal  OAT is less than the heating lockout temperature  If occupied, the SPT is less than the occupied heating setpoint  If unoccupied, the SPT is less than the unoccupied heating setpoint If all the above conditions are met, the heating outputs are energized as required, otherwise they are de- energized.

  • Page 25: Mixed Air Damper (Modulating)

    Communications wiring Mixed air damper (Modulating) The Unit Vent operates a mixed air damper to maintain the desired cooling setpoint without mechanical cooling, while also providing the required ventilation. The modulating mixed air damper is controlled by the PI (Proportional-integral) cooling algorithm and integrated with mechanical cooling while also maintaining a minimum OA intake if the optional CO sensor is available.

  • Page 26: Changeover Mode Detection

    Communications wiring Changeover mode detection The Unit Vent determines the changeover mode for 2-pipe heating/cooling systems. The controller monitors a local changeover thermistor sensor or switch, dependent upon the configuration. For thermistor applications, the heat or cool mode is determined by user-configurable temperature setpoints. When the sensed temperature exceeds the Changeover Heat Limit, the system changeover mode is set to heat.

  • Page 27: Demand Limiting

    Communications wiring The configuration screens contain the 5 adjustable setpoints:  DCV Start Control setpoint  DCV Maximum Control setpoint  Minimum Damper Position  DCV Maximum Vent Damper Position  Min SAT in DCV Override These can be adjusted to meet various specifications. Demand Limiting The Unit Vent accepts 3 levels of demand limit from the network.

  • Page 28: Compliance

    Compliance Compliance FCC Compliance This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 29: Appendix A: Unit Vent Network Points List

    Appendix A: Unit Vent Network Points List Appendix A: Unit Vent Network Points List Third party access to BACnet points in a controller BACnet system points in the i-Vu® Open controllers match physical I/O points to data, such as Outside Air Temp, to be written to the controller through the network, rather than by using a local hardwired sensor.
  • Page 30 Appendix A: Unit Vent Network Points List BACnet System Valid Range BACnet/ LonWorks Recommended Write Points Display Modbus Default Value* Rrefresh Name /N2 Default Value* Time (min/max) Vu® only) (Only available through BACnet) 3 = BAS On/Off (third party control)* 4 = Remote Occ Input BAS On/Off* 1=Inactive...

  • Page 31: Network Points List For Bacnet And Modbus

    Appendix A: Unit Vent Network Points List Commanded Points Control Points Type / Type / Display Name Object Name Display Name Object Name Instance Instance †System bv:1907 fire_shutdown Fire/Smoke bv:7007 fire_alarm Fire/Smoke Shutdown †System bv:1906 press_override Pressurization bv:7038 press_alarm Pressurization BAS On/Off msv:1001 keypad_ovrde...
  • Page 32 Appendix A: Unit Vent Network Points List BACnet Modbus Point Default BACnet Object Modbus Modbus Point Name Units BACnet Point Name Access Value Register Register # Type (Float) Damper Setpoint °F dmpr_ovrde_val AV:4006 Holding Override Value Register (Float) Economizer Holding %Open econ_purge_min AV:9029...
  • Page 33 Appendix A: Unit Vent Network Points List BACnet Modbus Point Default BACnet Object Modbus Modbus Point Name Units BACnet Point Name Access Value Register Register # Type (Float) Changeover Cool chgovr_mode BV:1014 Discrete Mode Heat Input Cool Enable Disable Active (1) cl_enable BV:1011 Coil Enable...
  • Page 34 Appendix A: Unit Vent Network Points List BACnet Modbus Point Default BACnet Object Modbus Modbus Point Name Units BACnet Point Name Access Value Register Register # Type System Mode (1) Off run_status MSV:2002 Input (2) Fan Only Register (3) Economize (Signed) (4) Cooling (5) Heating...

  • Page 35: Network Points List For N2 And Lonworks

    Appendix A: Unit Vent Network Points List Network points list for N2 and LonWorks LonWorks Point Name Point Units Default N2 Network N2 Network SNVT Type SNVT Name Access Value Point Type Point Address Return Air °F °F nvoRtnAirTmp Output (active) - Temperature default Setpoint...
  • Page 36 Appendix A: Unit Vent Network Points List LonWorks Point Default N2 Network N2 Network Point Name Units SNVT Type SNVT Name Access Value Point Type Point Address Temperature default System Setpoint Input (passive) - °F °F nviSysSptAdj Adjustment default System Space AQ no units no units nviSysSpAQ...
  • Page 37 Appendix A: Unit Vent Network Points List LonWorks Point Default N2 Network N2 Network Point Name Units SNVT Type SNVT Name Access Value Point Type Point Address (3) Med (4) High (5) On Optimal Start Type (1) None nviOptStType Input (passive) - (2) Temp default Compensated...

  • Page 38: Appendix B: Bacnet Protocol Implementation Conformance Statement

    Appendix B: BACnet Protocol Implementation Conformance Statement Appendix B: BACnet Protocol Implementation Conformance Statement The PIC statements are updated regularly. Please refer to the BACnet website http://www.bacnetinternational.net/catalog/index.php?m=28 for the latest information. Unit Ventilator CARRIER CORPORATION ©2019 Integration Guide All rights reserved...

  • Page 39: Bacnet Data Link Layer Options

    BACnet Data Link Layer Options BACnet Data Link Layer Options Data Link Layer Options Foreign Device -3, Ethernet (Clause 7) ANSI/ATA 878.1, RS-485 ARCNET (Clause 8) baud rate(s) 156k baud MS/TP master (Clause 9), baud rate(s): 9600, 19200, 38400, 76800 lause 9), baud rate(s): 9600, 19200, 38400, 76800 -To-Point, EIA 232 (Clause 10), baud rate(s): 9600, 19200, 38400, 76800 -To-Point, modem, (Clause 10), baud rate(s): 9600, 19200, 38400, 76800...

  • Page 40: Appendix C: Johnson Controls N2 Protocol Implementation Conformance Statement

    Appendix C: Johnson Controls N2 Protocol Implementation Conformance Statement Appendix C: Johnson Controls N2 Protocol Implementation Conformance Statement Serial Transmission Mode Supported? N2 Open Slave (Slave is the Default Dipswitch setting) Communication Types Baud rates Data Bits Parity Stop Bits 2-wire EIA-485 9600 None...

  • Page 41: Appendix D: Modbus Protocol Implementation Conformance Statement

    Appendix D: Modbus Protocol Implementation Conformance Statement Appendix D: Modbus Protocol Implementation Conformance Statement Serial Transmission Mode: Supported? Slave (Slave is the Default Dipswitch setting) Communication Types: Baud Data Bits: Parity: Stop Bits: rates: 2-wire EIA-485, 9600, None 19200, 38400, 76800 Function Codes: Purpose:...

  • Page 42: Appendix E: Lonworks Protocol Implementation Conformance Statement

    Appendix E: LonWorks Protocol Implementation Conformance Statement Appendix E: LonWorks Protocol Implementation Conformance Statement Product Names: Unit Vent LonWorks network points are spawned within the device as a result of downloading graphical control programs. The Unit Vent controller speaks the LonWorks Protocol as described by Echelon Protocol Specification. Since the controller is custom-programmable it does not conform to LonMark certification.
  • Page 43 Appendix E: LonWorks Protocol Implementation Conformance Statement SNVT_date_cal SNVT_length SNVT_pwr_fact_f SNVT_vol SNVT_date_day SNVT_length_f SNVT_reg_val SNVT_volt SNVT_date_time SNVT_length_kilo SNVT_reg_val_ts SNVT_volt_ac SNVT_defr_mode SNVT_length_micr SNVT_res SNVT_volt_dbmv SNVT_defr_state SNVT_length_mil SNVT_res_f SNVT_volt_f SNVT_defr_term SNVT_lev_cont SNVT_res_kilo SNVT_volt_kilo SNVT_density SNVT_lev_cont_f SNVT_rpm SNVT_volt_mil SNVT_density_f SNVT_lev_disc SNVT_scene SNVT_vol_f SNVT_dev_c_mode SNVT_lev_percent SNVT_scene_cfg SNVT_vol_kilo...

  • Page 44: Document Revision History

    Document revision history Document revision history Important changes to this document are listed below. Minor changes such as typographical or formatting errors are not listed. Date Topic Change description Code* 11/19/19 Appendix A: Network Points List > New topic C-TS-JN-E-RD Third party access to BACnet points in a controller 5/22/18...
  • Page 45 CARRIER CORPORATION ©2019 A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 11-808-513-01 · 11/19/2019...

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