ABB FBVi-2U4-4T User Manual Download Page 86

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FBVi-2U4-4T |

Control Sequence

Subject to change without notice

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v 5

CO₂ AND HUMIDITY

₂

CONTROL

CO₂

sensor should be wired to UI4, and

UI4Config (A174)

is set to 0.

This will take a voltage signal from 0-10V.
To adjust the

CO₂

reading dependent on altitude above sea level, enter the height in ft into the

altitude

(A215)

analog setpoint.

•

On a rise in zone

CO₂

levels above the

CO2_Stpt (A223),

the VAV box flow will reset upwards to the

maximum flow setpoint.

•

To disable the

CO₂

flow reset based on CO2, set

enableCO2_DCV (D270)

FALSE

. This may be

necessary on cooling only boxes with no supplemental heat.

The minimum

CO₂

range in ppm is set using

minCO2Range (A278),

and the maximum

CO₂

range is set

using

maxCO2Range (A280)

analog setpoint.

HUMIDITY MONITORING

Humidity will be monitored by the CBT-Stat or if

UI4Config (A174)

is set to 1 and a 0-10v humidity

sensor is wired.

WINDOW SENSOR AND FAN STATUS

WINDOW SENSOR

If an input has been configured for a window sensor, the input is N.O. when the window state is closed.

When a window has been opened, the input will close. The status is read at

windowOpen (D251).

When a window has been detected open:

•

Heating and cooling are disabled.

•

Damper is closed.

•

Any VAV fans are disabled.

FAN STATUS

If UI 4 has been configured for fan status, the input is N.O. when the fan is off. When the fan is energized,

the input will close. The

fanConfig (A54)

analog setpoint

should be set for either parallel or series fan

control. The status is read at

fanStatus (D88).

•

If the series or parallel fan has been commanded ON and no fan status has been detected within 30

seconds, a fan alarm will be generated.

DAMPER CONTROL

The

FBVI-2U4-4T

controller provides pressure-independent zone temperature control by calculating

airflow rate setpoints based on the space temperature deviation from zone setpoint and the duration of

deviation. The primary inlet airflow rate is measured and compared to this control point. Any error

greater than the deadband setting will cause the primary air damper to be driven open or closed as

required to reduce the error to within an adjustable Flowrate deadband.

The primary airflow setpoint is read from point

activeFlowSetpoint (A236).

Specific details on airflow and airflow setpoints can be reviewed in Section 3 Control sequences.

Summary of Contents for FBVi-2U4-4T

Page 1: ... USER GUIDE MAN0148 rev 5 FBVi 2U4 4T ...

Page 2: ...that represents File paths Code snippets or text file configuration settings is presented in fixed width font with a grey background and border For example config_file c CYLON settings config txt Parameter values Text that represents values to be entered into UI fields or displayed in dialogs is represented in fixed width font with a shaded background For example 10 C Product Names Text that repre...

Page 3: ...col 9 Subnetwork Subnet 9 Default gateway 10 Port Numbers 11 Uplink WAN and Segmentation 12 Network Address Translation NAT 13 Domain Name System DNS 13 3 BACNET NETWORKING What is BACnet 14 BACnet object types 15 BACnet services 15 BACnet s Client Server nature 16 Network Types 16 PIC Statement 16 BACnet Topology 17 BACnet IP 18 BACnet IP Broadcast Management Device BBMD 18 BACnet MS TP 19 Token ...

Page 4: ...witch 35 Configuring the IP connection 35 Wiring the IO 43 Configuring the FBVi 2U4 4T controller 45 Setting FBVi 2U4 4T BACnet Commissioning Configuration Codes in CXproᴴᴰ 45 Input Configuration 46 Heat Setup 47 Heat Order 48 Digital Hardware Output Configuration 48 Digital Output Direct Reverse Action 49 Analog Hardware Output Range Options 49 Analog Output Direct Reverse Action 49 6 FBVI OPERAT...

Page 5: ...l 69 Damper Control 69 Fan Control 70 VAV Modulating Hot Water Reheat No Fan 72 Temperature Control 72 Input Output Points 74 VAV Modulating Hot Water Reheat Single Speed Fan 75 Temperature Control 75 Damper Control 75 Fan Control 76 Input Output Points 77 VAV Modulating Hot Water Reheat Variable Speed Fan 78 Temperature Control 78 Fan Control 79 Input Output Points 80 8 CONTROL SEQUENCE OVERVIEW ...

Page 6: ...ure Alarm 89 Airflow Calibration Alarm 89 Leaking Damper Alarm 89 Leaking Valve Alarm 89 Fan Alarm 89 High CO Alarm 89 Network Variables 90 Network In Variables 90 Unit Status and Graphic Points 91 Unit Status 91 Graphic Points 91 Fan Control 93 Parallel Fan 93 Series Fan 93 Variable Speed Fan 93 Parallel Variable Speed Fan 93 Series Variable Speed Fan 93 9 APPENDIX LIST OF FBVI 2U4 4T POINTS Hard...

Page 7: ...ut for Cylon s CBT STAT or other intelligent room sensors The FBVi 2U4 4T model includes an integrated Belimo actuator FLXeon s scalable and modular architecture utilizes its embedded graphics and visualization engine FLXvue to get data from the edge2cloud APPLICATION The FBVi 2U4 4T is suitable for controlling single duct or fan assisted Variable Air Volume VAV applications This controller also s...

Page 8: ...yer is usually Ethernet DATALINK LAYER LAYER 2 This is where data packets are translated to and from bits which can be transferred on the Physical Layer NETWORK LAYER LAYER 3 Layer 3 provides switching and routing to create paths for data to be transmitted from node to node within the network This is the layer that gives IP its name TRANSPORT LAYER LAYER 4 This layer is responsible for end to end ...

Page 9: ...er cycles and makes a new DHCP request SUBNETWORK SUBNET A subnet is a logical division of a network that is while it might be physically connected to other subnets communications traffic from one subnet can be kept separate from comms origination on other subnets A group of the most significant bits of the IPv4 address the numbers at the start of the address specifies the address of a network or ...

Page 10: ...representing the subnet host Equivalent subnet mask 255 255 255 0 DEFAULT GATEWAY Devices on the same subnet can address IP packets to each other without using a router device To communicate with devices on another subnetwork the traffic must be routed through a router device s WAN port When a device needs to communicate with an IP address that is not on the same network it sends the packet to the...

Page 11: ...traffic by convention uses port 80 If no port is specified in the IP address for HTTP traffic port 80 will be assumed If a port is specified e g port 8080 as in the address 192 168 100 33 8080 the specified port will be used instead This allows the device to communicate on multiple protocols at the same time Some of the services associated with port numbers include Service Protocol Default Port Nu...

Page 12: ...litting a network into different function groups is known as Network segmentation This is done to improve performance by reducing the amount of traffic on each segment and to improve security It is achieved by connecting Routers together by their WAN or UPLINK ports If routers are connected without using their WAN or UPLINK ports the result is a single segment ...

Page 13: ...se a text based Uniform Resource Locator URL with meaningful values such as www cylon com to connect to a site or device without having to know the server s IP address The DNS finds the URL in its distributed database and passes the corresponding numeric IP address to the requesting device If a device s IP address changes the DNS server can be updated with its new IP address ensuring that other ne...

Page 14: ...representing the functions of any device for example analog or binary inputs or outputs schedules control loops and alarms The standardized model of a device represents these common functions as collections of related information called objects Each object has a set of properties that further describe it Each analog input for instance is represented by a BACnet Analog Input object which has a set ...

Page 15: ...Schedule Notification Class File Trend Log Manufacturing Object BACNET SERVICES The BACnet standard defines numerous services for interaction between BACnet devices The following are supported by Cylon BACnet products ReadProperty WriteProperty ReadPropertyMultiple WritePropertyMultiple Read Range WhoIs IAm WhoHas IHave UnconfirmedPrivateTransfer TimeSynchronization UTCTimeSynchronization DeviceCo...

Page 16: ...ps or classes For example one class contains messages for accessing and manipulating the properties of the objects described above A common message type is the ReadProperty service request This message causes the server machine to locate the requested property of the requested object and send its value back to the client Other classes of services deal with alarms and events file uploading and down...

Page 17: ...s a physical connection to the network Devices are given a unique Device Instance Number which can be a number between 0 and 4194302 BACnet MS TP devices have additional addressing designations called MAC addresses For most users it is the Device Instance Number which is used as a reference but the combination of the Network Number and MAC address of an MS TP device may be configured by a System I...

Page 18: ...On a LAN with standard routers these broadcasts are blocked Thus BACnet broadcasts are limited to the IP Subnet of the BACnet device With a BACnet IP network of 2 or more IP subnets a device with BBMD can be used A BBMD located on an IP subnet monitors the origin of a broadcast message on that subnet and in turn constructs a peer to peer message in order to pass through an IP router This peer to p...

Page 19: ...or to request information from it A device that receives the token may or may not need to perform network functions e g read values from a remote device broadcast information etc If not it will simply pass the token along the network If you are connecting devices to an existing MS TP network consisting of third party devices consult third party vendor documentation regarding MS TP network consider...

Page 20: ...ue is typically set by the factory but can be modified if necessary In the event a device does not need to keep the token for the number of frames specified devices will automatically pass the token onto the next device BACNET MS TP DEVICE LOADING MS TP Master Slave Token Passing is a protocol where each device is wired in series and they take turns communicating depending on which device currentl...

Page 21: ... controlled Command Prioritization assigns unique levels of priority to the different types of devices that can write values to a device There are 16 prioritization levels with Level 1 being highest and Level 16 the lowest For example Priority Level Application Priority Level Application 1 Manual Life Safety 9 Available 2 Automatic Life Safety 10 Available 3 Available 11 Available 4 Available 12 A...

Page 22: ... Rights Reserved Subject to change without notice WWW CYLON COM 22 MAN0148 rev 5 4 FBVi Web UI SUMMARY DASHBOARD The Summary Dashboard displays the controller status including important information such as firmware versions and I O status ...

Page 23: ...NU DEVICE The BACnet Device Name and Device ID are set from this page ROUTER NETWORKS BACnet Network numbers are used to identify the wire to which the device is attached For IP all devices on the local LAN must have the same BACnet Network number For MS TP devices each serial bus line must have a unique BACnet Network number ...

Page 24: ... Synchronization messages can be sent from this device to any BACnet device in order to ensure that those devices have the correct times The Transmit Options control how often and when to send The Destinations list the targets to which the Time Sync messages will be sent Time Sync messages can be broadcast to an entire network if desired ...

Page 25: ...ve B IP addresses there is nothing that restricts them from communicating directly BACnet IP to BACnet IP different subnet The location of the two devices is already known by the host and the message is routed to the device using switches and routers Broadcast same subnet This is a standard Who is I am message sent across a local subnet for the BBMD to discover what the address are for the BACnet ...

Page 26: ...part of the serial number grouped into 3 sets of 2 digits to form the last 3 bytes of the IP address For example FBVi with serial number 901001A will be allocated the default IP address of 10 90 10 01 See also Configuring the IP connection on page 35 The IP Address input is also used to specify the subnet mask in CIDR format See Subnetwork Subnet on page 9 for a full explanation Recovery IP Addres...

Page 27: ...e defines IP ports that are open to the outside world and the protocols those ports expect to use HTTPS HTTP are used for this web configuration HTTPS is always enabled though the port can be changed if required HTTP is disabled by default The BACnet ports are needed if the controller must communicate with other BACnet controllers over IP ...

Page 28: ...ert page allows you to enter the details for an SSL certificate which can be applied to the current FBVi as a self signed certificate or else these details can be used to generate a request for a 3rd party SSL Cert on the IP Network Sign SSL Cert page To install a 3rd party SSL Cert or to generate a request for a 3rd party SSL Cert use the IP Network Sign SSL Cert page ...

Page 29: ...i Memory usage is also displayed FIRMWARE UPGRADE UTILITY With assistance from technical support you may upgrade the firmware of the FBVi Please be sure to back up your system before commencing the upgrade Note The controller will be out of service while being upgraded To upgrade click Platform Upgrade Firmware and an Open File dialog will appear Find the aam file that you would like to upload Onc...

Page 30: ...trategy You may also restore a backup to the FBVi By clicking the Restore Backup to Controller button An Open File dialog will appear Find the appropriate backup file and select it for restoring After a few moments the controller will restart with the new Strategy and data SET TIME AND DATE On most networks NTP is used to automatically keep the time and date correct Enabling it generally requires ...

Page 31: ... occurred which stopped a portion of the functionality of the FBVi and you do not wish to reboot the entire FBVi platform Choose Reboot Platform to cleanly shutdown the FBVi and then restart it This is equivalent to rebooting your PC Choose Restart Strategy Engine to stop and restart the processing of the Strategy Restart the BACnet Router and MSTP stops and restarts the internal BACnet Router and...

Page 32: ...agnostic Processes page displays a list of the processes that are running in the FBVi If requested by Technical Support a screenshot of this page can be useful in diagnosing certain types of problems DEBUG LEVEL If directed by Technical Support you can change the debug levels to assist in troubleshooting difficult field problems should the need arise ...

Page 33: ...sist in troubleshooting difficult field problems should the need arise The Download button will instruct you to save the file to your PC from where you can email it to Technical Support OPEN SOURCE ACKNOWLEDGMENT NOTICES Some components of the software used in FBVi are distributed under one or more 3rd party and open source licenses The licenses are listed on the Diagnostic Acknowledgements page ...

Page 34: ...onductor will be wired to the COM common terminal of the controller The wiring diagram is shown here Note Ensure the 24 V AC DC and Common wires are correctly connected to the controller If the wires are swapped it may cause damage to anything connected to the controller CONNECT THE FBVi TO AN IP NETWORK Place an Ethernet cable from the Network s Ethernet switch into one of the 2 Ethernet ports on...

Page 35: ...ill be on one trunk and C D E will be on another all communicating If controllers B and D lose power controllers A and E will communicate but controller C will not Note The FBVi Series controller has a pass through across its IP switches such that if it loses power controllers downstream will continue to be connected Only the FBVi Series has this feature Note If you plug both ends of the daisy cha...

Page 36: ...ated Devices panel on the bottom left lists any Discovered Device that has been associated with a configured Site Device How to Associate devices To associate a Discovered Device with a Site Device select a device in the Site Devices list and a device in the Discovered Devices list and click the Associate button Alternatively you can drag the Site Device and drop it over a Discovered Device Once t...

Page 37: ...ev 5 When all required devices have been associated click OK to open the Configure IP device dialog where the IP Properties of Associated devices can be edited The list on the bottom shows the unassociated or offline devices When the properties are set as required click Apply to send the changes to that controller ...

Page 38: ...f the laptop s Ethernet port must be set to a subnet that is compatible with the FBVi s IP address For example if the FBVi has an IP address of 10 90 10 01 the laptop could have an address something like 10 90 10 nn with a subnet mask of 255 255 255 0 Note If the default IP address is used on a network it can cause an IP Address conflict if the network s subnet mask is 10 0 0 0 8 see Subnetwork Su...

Page 39: ...oint a web browser at the FBVi device s IP address and log in to the Web UI Note By default all FBVi devices leaving the factory are configured with the following login username admin password cylonctl It is recommended that you change these credentials by clicking on the User icon in the top right of the Web UI page and selecting Change Password ...

Page 40: ...CP UDP Ports page Note BACnet NAT is used for accessing the BACnet device from the Internet for example in the case of remote supervision The Port Number set here should match the corresponding settings on the BACnet BBMD NAT page Warning Cylon recommend that controllers should not be exposed on the Internet without a VPN See HT0038 Aspect FBVi and CBXi System Network Security Best Practice for de...

Page 41: ... Edit SSL Cert page If a signed certificate is required then a signing request can be generated on the IP Network Sign SSL Cert page based on the information entered on the IP Network Edit SSL Cert page The IP Network Edit SSL Cert page allows you to enter the details for an SSL certificate which can be applied to the current FBVi as a self signed certificate or else these details can be used to g...

Page 42: ...lation ABB 2021 All Rights Reserved Subject to change without notice WWW CYLON COM 42 MAN0148 rev 5 To install a 3rd party SSL Cert or to generate a request for a 3rd party SSL Cert use the IP Network Sign SSL Cert page ...

Page 43: ...pancy sensor or window sensor U I 3 is a dedicated input that has been configured to read a thermistor In the pre loaded strategy this input is used for a discharge air temperature sensor U I 4 is configured as a voltage input This input can be used for wiring in a CO sensor or relative humidity sensor It can also be set up for an occupancy sensor window sensor or a VAV fan status Note For CO or r...

Page 44: ...AO 14 can be configured for controlling any first stage modulating heating valves SCR Silicon Controlled Rectifier or EMC Electronic Modulating Control type controls depending on the heating elements of the VAV box AO 15 can be configured for controlling any second stage modulating heating valves SCR Silicon Controlled Rectifier or EMC Electronic Modulating Control type controls depending on the h...

Page 45: ...the thermistor while the button is pushed If a CBT Stat is being used it can be configured as an occupancy sensor or window sensor UI 2 This input is typically going to be configured for set point slide adjust This input will support a 5K POT to support room sensors It can also be configured as an occupancy sensor or a window sensor UI 3 This input is used as the Discharge Air Temperature There ar...

Page 46: ...int to the following 0 Zone Temperature default 1 Occupancy Sensor 2 Window Sensor For UI2 Configuration set UI2Config 175 analog setpoint to the following 0 Temperature Offset 0 5K Ohm default 1 Occupancy Sensor 2 Window Sensor For UI3 Configuration set UI3Config A176 analog setpoint to the following 0 Discharge Air Temperature default 1 No discharge Air Temperature For UI4 Configuration set UI4C...

Page 47: ...e stage of Heat o Unit has one stage of heat 2 Two stages of Heat o Unit has two stages of heat 4 Three stages of Heat o Unit has three stages of heat 16 Is Duct heat or perimeter heat the priority o If Duct heat is the priority the stages of duct heat will be enabled before the stages of Perimeter heat o If Perimeter heat is the priority the stages of perimeter heat will be enabled before the sta...

Page 48: ... 09 and DO 10 DO 09 1st stage of Heat if tri state is configured the first stage is DO 10 and DO 11 DO 10 2nd stage of Heat not available Tri State is selected for 1st stage DO 11 3rd stage of Heat if tri State is 1st stage and a digital 2nd stage is needed set heatConfig A4 to 3 stages of heat DO 12 reserved for On Off control for fan only AO 14 1st stage of Heat AO 15 2nd stage of Heat not avail...

Page 49: ...ONS AO14 and AO15 ranges can be selected with the stg1OutType A1 or stg2OutType A2 analog setpoints if both stages are set to heat If AO15 is used for a variable fan change the stg2OutType A2 setpoint To customize the voltage ranges use the following analog setpoints For the custom selection on AO14 AO14_HiAOValue A373 is 10V by default This is adjustable AO14_LowAOValue A372 is 2V by default This...

Page 50: ...ow Blink Fast blink Red LED Power Power is off Power is on ___ Unit Rebooting ___ Green LED Status Unit is not running Strategy Loaded but no network connectivity Strategy Loaded and device communicating on network No Strategy loaded Note During typical operation the Red LED should be on the Green LED should be blinking Bidirectional Airflow Sensor External connection at bottom of housing ...

Page 51: ...iversal Inputs 26 28 UniPut 29 31 32 34 30 33 Triac Outputs Triac Common 93 94 Power 24 V AC Important The common power connection terminal 33 must be connected to Earth ABB Cylon recommend that this is done at the 24 V AC transformer 41 42 39 40 Cylon room sensor Power supply Cylon room sensor RS485 Description Ethernet Rotary Actuator Damper Manual Override ...

Page 52: ...g 10k Type 2 10K3A1 or 10k Type 3 10K4A1 0 3 C 40 to 90 C 40 F to 194 F 0 4 C 90 C 194 F Pulse counting volt free up to 20 Hz 25 ms 25 ms 24 V AC Detect Voltage Analog Input Range 0 10 V 130 kΩ Accuracy 0 5 full scale 50mV Analog Input Range 0 10 V 40 kΩ Accuracy 0 5 full scale 50mV Pulse counting 0 10 V up to 20 Hz 25 ms 25 ms Current Current input Range 0 20 mA 390 Ω Accuracy 0 5 full scale 100μ...

Page 53: ...0 output Volt Free Digital Input the controller strategy measures the contact resistance and gives a 0 or 1 output Straightforward Resistance measurement This can be used with the Make Linear block to give a temperature output for temperature sensors that are not factory pre programmed into the FBVi 2U4 4T In CXproᴴᴰ simply select Resistance sensor type in the Point Module and select Pulsed in the...

Page 54: ...Uniput Note Input Impedance for Universal Input terminals is 130 kΩ Input Impedance for Uniput terminals is 40 kΩ The 0 10 V input is used for Active analog and digital measurements Active means that there is no current supplied by the FLX for the sensor as the signal is generated completely by the Sensor The mV sensor setting gives a value between 0 and 10 000 which represents voltage in mV In 0 ...

Page 55: ...or all relay contacts Analog 0 10 V output mode In Analog 0 10 V output Mode the Uniputs configure themselves like this where the D A is the digital to analog converter All circuitry is fully protected against 24 V AC Digital 0 10 V output mode In Digital 0 10 V output Mode the Uniputs configure in the same way as for analog In this mode the output toggles between the voltages defined as ON and OF...

Page 56: ...00 mA a properly sized intermediate relay must be used AUXILIARY POWER OUTPUT FBVi 2U4 4T has one 18 V DC output for I O devices that require loop power For 3 wire connections return can be through any COM terminal but it is recommended that Auxiliary power wiring is through terminal 14 the COM between the two Auxiliary power terminals The DC output terminals provide a minimum of 18 V DC but the l...

Page 57: ...ot be used to balance a VAV box The Controller Strategy can determine if an override is in place is by connecting to the Override point on the output module The value of the Override point will be 0 when the output is active and 1 when the point has been manually overridden This allows the strategy to react to the fact that a point has been overridden Note The corresponding terminal LED will indic...

Page 58: ...able Speed Fan VAV COOLING ONLY NO FAN TEMPERATURE CONTROL When the zone temperature is greater than the cooling temperature setpoint the controller will enter the cooling mode The primary airflow rate will be varied between its minCoolFlowStpt A227 and its maximum Flowrate setpoint maxCoolFlowStpt A228 as required to maintain the zone at the cooling temperature setpoint Once the zone temperature ...

Page 59: ...INTS DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 AO 14 AO 15 AO 16 Damper Control ...

Page 60: ...tween the cooling and heating temperature setpoints it will be in Deadband or Vent Mode The controller will maintain the minCoolFlowStpt A227 When the zone temperature falls below the heating setpoint the controller will enter the heating mode and the primary airflow rate will maintain the minCoolFlowStpt A227 Once the zone temperature rises above the heating temperature setpoint it will exit heat...

Page 61: ...DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 Series Fan Cmd AO 14 AO 15 AO 16 Damper Control ...

Page 62: ...mperature falls below the cooling temperature setpoint it will exit the cooling mode When the zone temperature is between the cooling and heating temperature setpoints it will be in Deadband or Vent Mode The controller will maintain the minCoolFlowStpt A227 When the zone temperature falls below the heating setpoint the controller will enter the heating mode and the primary airflow rate will mainta...

Page 63: ...OINTS DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 AO 14 AO 15 Series Fan Cmd AO 16 Damper Control ...

Page 64: ...t Mode The controller will maintain the minCoolFlowStpt A227 If the activeAirflow A250 is 50 cfm below the minHeatFlowStpt A230 and the duct heat is digital the heat will be disabled When the zone temperature falls below the heating setpoint the controller will enter the heating mode If no discharge air temperature sensor is configured or DualMax control is not enabled o If there is no discharge a...

Page 65: ...harge air temperature shall be reset upwards to a maximum of 20 deg above zone temperature The stages of heat shall be enabled to maintain a discharge air temperature setpoint o As heating demand rises from 51 100 the airflow setpoint shall reset from the minHeatFlowStpt A230 to the maxHeatFlowStpt A229 flow o The duct coil shall control the VAV discharge air temperature to the setpoint The duct c...

Page 66: ...with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 Stage 1 Electric Heat DO 10 Stage 2 Electric Heat DO 11 Stage 3 Electric Heat DO 12 AO 14 AO 15 AO 16 Damper Control...

Page 67: ...mperature sensor is configured is not enabled o As heating demand rises from 0 100 the stages of heat shall be enabled to maintain zone temperature setpoints If discharge air temperature sensor is configured this meets ASHRAE Standards o As heating demand rises from 0 100 the discharge air temperature shall be reset upwards displayed as dischargeAirTempStpt A31 to a maximum set at maxDischargeAirT...

Page 68: ...I 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 Stage 1 Electric Heat DO 10 DO 1 DO 12 Series or Parallel Fan Cmd AO 14 AO 15 AO 16 Damper Con...

Page 69: ...ain the minHeatFlowStpt A230 When the zone temperature falls below the heating setpoint the controller will enter the heating mode If no discharge air temperature sensor is configured o As heating demand rises from 0 100 the stages of heat shall be enabled to maintain zone temperature setpoints o As heading demand rises from 51 100 the fan speed setpoint shall reset from minFanSpeed A237 to maxFan...

Page 70: ...ncrease As the heating demand increases the variable fan command will increase from minFanSpeed A237 setpoint to the maxFanSpeed A238 setpoint Series Variable Fan Speed Option The variable fan speed will be controlled by modulating AO 15 default 0 10 Vdc In deadband mode the fan will run at a slower speed As the heating demand increases the variable fan command will increase from minFanSpeed A237 ...

Page 71: ...re with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharge Temperature UI 04 CO2 Humidity occupancy fan status or window contact all optional UI 08 Flowrate Sensor DO 09 Stage 1 Electric Heat DO 10 Stage 2 Electric Heat DO 11 Stage 3 Electric Heat DO 12 AO 14 AO 15 Series or Paralle...

Page 72: ...adband or Vent Mode The controller will maintain the minCoolFlowStpt A227 If the activeAirflow A250 is below the minHeatFlowStpt A230 the heat will be disabled When the zone temperature falls below the heating setpoint the controller will enter the heating mode If no discharge air temperature sensor is configured or DualMax control is not enabled o If there is no discharge air temperature sensor c...

Page 73: ...e setpoint o As heating demand rises from 51 100 the airflow setpoint shall reset from the minHeatFlowStpt A230 to the maxHeatFlowStpt A229 flow o The duct coil shall control the VAV discharge air temperature to the setpoint The duct coil shall not directly control zone temperature Typically the modulating heating valve may be controlled by either AO 14 or DO 09 and D0 10 in a tri state control mo...

Page 74: ... status or window contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 AO 14 Stage 1 Modulating Heat AO 15 AO 16 Damper Control VAV Modulating HW Reheat no fan Tri state IO POINTS DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all optional UI 03 Discharg...

Page 75: ...troller will maintain the minHeatFlowStpt A230 When the zone temperature falls below the heating setpoint the controller will enter the heating mode If no discharge air temperature sensor is configured is not enabled o As heating demand rises from 0 100 the stages of heat shall be enabled to maintain zone temperature setpoints If discharge air temperature sensor is configured this meets ASHRAE Sta...

Page 76: ...ng mode The fan control matrix is as follows MODE COOLING DEADBAND HEATING Occupied Off Off On Unoccupied Off Off On Warm up Off Off Off Standby Off Off On Series Single Speed Fan Option The fan will operate continuously whenever the unit is in the occupied state or in another state and in the cooling or heating mode The fan control matrix is as follows MODE COOLING DEADBAND HEATING Occupied On On...

Page 77: ... contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 Series or Parallel Fan Cmd AO 14 Stage 1 Modulating Heat AO 15 AO 16 Damper Control VAV Modulating HW Reheat with 1 speed fan Tri state IO POINTS DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact all opt...

Page 78: ...ll enter the heating mode If no discharge air temperature sensor is configured o As heating demand rises from 0 100 the stages of heat shall be enabled to maintain zone temperature setpoints o As heading demand rises from 51 100 the fan speed setpoint shall reset from minFanSpeed A237 to maxFanSpeed A238 If discharge air temperature sensor is configured this meets ASHRAE Standards o As heating dem...

Page 79: ...ing demand increases the variable fan command will increase from minFanSpeed A237 to the maxFanSpeed A238 Series Variable Fan Speed Option The variable fan speed will be controlled by modulating AO 15 default 0 10 Vdc In deadband mode the fan will run at a slower speed As the heating demand increases the variable fan command will increase from minFanSpeed A237 to the maxFanSpeed A238 As the coolin...

Page 80: ... contact all optional UI 08 Flowrate Sensor DO 09 DO 10 DO 11 DO 12 AO 14 Stage 1 Modulating Heat AO 15 Series or Parallel Fan Cmd AO xx Damper Control VAV Modulating HW Reheat with variable speed fan Tri state IO POINTS DESCRIPTION UI 01 Zone Temperature with optional override button occupancy or window contact all optional UI 02 Setpoint Adjustment optional 5K slider occupancy or window contact ...

Page 81: ...the netShedCmd A310 analog setpoint is set to a value above 0 On a signal from 0 100 the occupied cooling and heating setpoints shall reset down to the occupied standby setpoints Used for energy conservation UNOCCUPIED MODE When indexed to the unoccupied state the FBVI 2U4 4T will control to the unoccupied temperature setpoints Set Unoccupied Mode by toggling analog setpoint occCmd A269 0 The damp...

Page 82: ...mmunications are lost To use this feature set binary set point enableHeartbeat D307 to On default is set to off The master controller must write a value of On to binary set point heartbeatPulse D306 more frequently than the time delay setting in analog setpoint heartbeatTimer A408 do not use less than 5 minutes default is 10 minutes After the time delay expires if no writes are seen commAlarm D273...

Page 83: ...or more heat in an area the airflow setpoint will reset up to the maximum cooling airflow setpoint instead of the maximum heating airflow setpoint for maximum heat gain Once the room has met the setpoint the airflow setpoint will return to the minimum heat setpoint COOL DOWN COOLING STATE The unit will change to Occupied Mode and maintain the occupied cooling setpoint The damper will modulate to m...

Page 84: ...ed on In an UNOCCUPANCY state on a fall in zone temperature below the unoccHeatStpt A126 the heating demand will rise from 0 100 If heat is available the stages of heat will be enabled and the unit will be in Setback Mode The damper will modulate to maintain the activeAirflow A250 and it will reset from minHeatFlowStpt A230 to maxHeatFlowStpt A229 depending on the VAV configuration On a rise in zo...

Page 85: ...or on an input When no occupancy is detected by the occupancy sensor after a set time the occupied setpoints will offset to their standby setpoints determined by the standbyOffset A146 analog setpoint For example let us say the standbyOffset A146 is set to 3 deg and the cooling setpoint is 72F 22C and the heating setpoint is 70 20C When no occupancy is detected by the occupancy sensor the activeCo...

Page 86: ...hen a window has been opened the input will close The status is read at windowOpen D251 When a window has been detected open Heating and cooling are disabled Damper is closed Any VAV fans are disabled FAN STATUS If UI 4 has been configured for fan status the input is N O when the fan is off When the fan is energized the input will close The fanConfig A54 analog setpoint should be set for either pa...

Page 87: ...h the airflow sensor zeroed To compensate for possible air leakage around the damper users can zero the airflow sensor in the field To zero the airflow sensor users will need to do the following 1 Drive damper to the closed position by setting flowOverride A258 to 6 fullClosed 2 After the damper has fully shut set zeroAirflow D227 to ON After 10 sec it will record the offset After 10 seconds zeroA...

Page 88: ...g with the minimum flow can also be achieved by doing the following 1 Set Min CFM at minCoolFlowStpt A227 2 Set flowOverride A258 to 2 min cool flow 3 Set balanceModeLo D45 to TRUE 4 Allow activeAirflow A250 to reach minCoolFlowStpt A227 5 Enter the balancer s airflow in KFactorFlowLO A245 6 Again allow activeAirflow A250 to reach minCoolFlowStpt A227 7 Repeat as necessary 8 Calculated K factor ca...

Page 89: ...ratureFailure D124 will be set to TRUE DISCHARGE AIR TEMPERATURE FAILURE If the discharge air temperature is below 20 or above 130 deg F UI3_DischargeTempFailure D208 will be set to TRUE HIGH LOW ZONE AIR TEMPERATURE ALARM If the activeZoneTemp A191 is 2 deg above the activeCoolStpt A187 for more than 10 minutes highZoneTempAlarm D225 will be set to TRUE If the activeZoneTemp A191 is 2 deg below t...

Page 90: ...ETWORK IN VARIABLES There are two methods to send information to the VAV from the AHU CXProHD BACnet Broadcast Module o The AHU strategy should contain a BACNet Broadcast Tx Module with each of these Broadcast names AHUFanStatus AHUSupplyAir OutsideAirTemp netAHUMode netOccCmd GlobalShedCmd BACnet Points o BACnet point writes to the following variables netAHUFanStatus D235 netAHUSupplyAir A304 net...

Page 91: ...it Used in Integra applications graphic_variableFanSignal A315 Use with analog graphics If fanConfig A54 is set up as a variable series fan or a variable parallel fan and the signal from AO15 is greater than 0 the graphic will be enabled graphic_variableFanEnable D266 Use with a digital graphic If fanConfig A54 is set up as a variable series fan or a variable parallel fan and the signal from AO15 ...

Page 92: ...set for 1 2 or 3 stages of heat and digital output DO09 is On the graphic will be enabled graphic_Stg2HeatSignal A318 Use with analog graphics If heatConfig A4 is set for 2 stages of heat and digital output DO10 is On and stg2OutType A2 is a voltage signal and fanConfig A54 is not set for a variable fan the graphic will be enabled graphic_Stg1HeatSignal A327 Use with analog graphics If heatConfig ...

Page 93: ...ODE COOLING DEADBAND HEATING Occupied On On On Unoccupied On Off On Warm up N A On On Standby On On On VARIABLE SPEED FAN The terminal unit fan speed will be controlled through AO 15 0 10 V dc or a custom range PARALLEL VARIABLE SPEED FAN The Parallel Variable Speed fan will be energized when the FBVI 2U4 4T is in the heat mode and off when not in the heat mode Speed will modulate between the Mini...

Page 94: ...F C 2 Analog Input UI02 Setpoint Adjust Potentiometer Ohms Ohms 3 Analog Input UI03 Supply or Discharge Air Temperature F C 4 Analog Input UI04 CO2 Humidity or Motion Detection Volts Volts 8 Analog Input UI08 Flowrate Sensor Pascals Pascals 14 Analog Output AO14 Modulating Heat Stage 1 15 Analog Output AO15 Modulating Heat Stage 2 or Variable Fan Speed Control 16 Analog Output AO16 Damper Commande...

Page 95: ...ries Fan 8 Variable Parallel Fan 0 no units 0 no units 75 Yes stagesOfPerimeterHeat If the unit is configured for heat control with heatConfig set the number of stages for perimeter heat Perimeter heat will directly control zone temperature Set 0 3 stages 0 no units 0 no units 117 No netOccCmd Used for network assignment of the occCmd Used when utilizing Tx modules Not for BACnet use no units no u...

Page 96: ...lDemand Cooling demand from 0 100 184 No heatDemand Heating demand from 0 100 187 No activeCoolStpt The calculated cooling setpoint 74 F 23 C 188 No activeHeatStpt The calculated heating setpoint 72 F 21 C 190 Yes remoteZoneTemp If zone temperature is sent thru the network use this point 0 F 0 C 191 No activeZoneTemp The active zone temperature Will show either UI1 remote temp or CBT Stat temperat...

Page 97: ...1 Occupied Mode 2 Standby Mode 1 no units 1 no units 278 Yes minCO2Range Minimum CO range for a 0 10V input 0 ppm 0 ppm 280 Yes maxCO2Range Maximum CO range for a 0 10V input 2000 ppm 2000 ppm 283 Yes TriStateTravelTime The maximum amount of time for value travel from 0 100 95 sec 95 sec 287 Yes HVACModeCmd Override the box to another control mode 0 Auto 1 Morning Warm Up 2 Morning Cool Down 4 Hea...

Page 98: ...al max control is off 110 F 43 C 327 No graphic_Stg1HeatSignal Used for graphics Analog variable heat signal no units no units 329 No CO2_DemandVAV Available for AHU outdoor air reset of the damper 335 Yes ductHeatPIDGain PID gain tuned for duct heat 3 no units 3 no units 355 Yes perimeterHeatLockout The outdoor air temperature that the perimeter heat will be locked out 65 F 18 C 361 No perimeterH...

Page 99: ...ScheduleEnb Enable the internal BACnet schedule Disables occCmd A269 On Off 0 0 194 No highCO2Alarm If the CO2Demand is above 50 for more than 10 minutes enable the alarm On Off 0 0 196 No lowZoneTempAlarm If the active Zone Temperature is below the active heating setpoint for more than 15 minutes enable the alarm On Off 0 0 198 Yes reverseDO09 Reverse the operation of digital output DO09 On Off 0...

Page 100: ...the desired position outside of the deadband On Off 0 0 258 Yes reverseDamper Reverse the damper operation On Open is CCW Off Open is CW On Off 0 0 264 No graphic_stg3HeatDigital Used for graphics On when stage 3 heat is On On Off 0 0 265 No graphic_showPerimeterHeat Used for graphics On when stagesOfPerimeterHeat A75 is higher than 0 On Off 0 0 266 No graphic_variableFanEnable Used for graphics O...

Page 101: ...the device from the airflow sensor Check that there are no airflow blockages on the airflow sensor Check that the damper is open and the air handler is running DAMPER FAILURE Check that the damperOfflineAlarm D229 is not on This would indicate a communication error with the damper Check the linkage connecting the damper to the device is tight Check that no debris is preventing the damper from open...

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