Taco Comfort Solutions VT7300 Series Integration Manual Download

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SUPERSEDES: New EFFECTIVE: November 1, 2008

LonWorks Integration Manual

PIR Ready VT7300 Series

24 Vac Low Voltage Fan Coil Thermostats

For Commercial and Lodging HVAC Applications

Integration Manual

VT7300 Series Thermostats

102-221

Summary of Contents for Comfort Solutions VT7300 Series

Page 1: ... EFFECTIVE November 1 2008 LonWorks Integration Manual PIR Ready VT7300 Series 24 Vac Low Voltage Fan Coil Thermostats For Commercial and Lodging HVAC Applications Integration Manual VT7300 Series Thermostats 102 221 ...

Page 2: ...cupied to Stand By and Unoccupied as required by local activity being present or not This advanced occupancy functionality provides advantageous energy savings during occupied hours without sacrificing occupant comfort All thermostats can be ordered with or without a factory installed PIR cover see notes below The additional following documents are available at www taco hvac com PIR application in...

Page 3: ...NVT_hvac_status nvoDischAirTemp SNVT_temp_p nvoEffectOccup SNVT_occupancy nvoSpaceRH SNVT_lev_percent Manufacturer Configuration Properties Please see the manual for details Plug In for configuration provided nviOutdoorTemp SNVT_temp_p nvoSCCstatus SNVT_state_64 nviSetpoint SNVT_temp_p nviSpaceRH SNVT_lev_percent nviFanSpeedCmd SNVT_switch nviAuxHeatEnable SNVT_switch nviOccManCmd SNVT_occupancy n...

Page 4: ... X X X X X 16 nvoUnitStatus X X X X X X X X X X X 1 mode x x x x x x x x x x x 2 heat_output_primary x x x x x x x x x x x 4 cool_output x x x x x x x x x x x 6 fan_output x x x x x x x x x x x 7 in_alarm x x x x x x x x x x x 17 nvoSccStatus X X X X X X X X X X X 1 StateTerminal BO2 x x x x x x N A N A N A N A N A 2 StateTerminal BO1 N A x x N A x x N A N A N A N A N A 3 StateTerminal BO4 N A x x...

Page 5: ...A N A N A N A N A x x x x x 5 BI1 x x x x x x x x x x x 6 BI2 x x x x x x x x x x x 7 UI3 x x x x x x x x x x x 8 Menu Scroll x x x x x x x x x x x 9 Auto Mode x x x x x x x x x x N A 10 Temperature Scale x x x x x x x x x x x 11 Pipes Main out config x x x x x x x x x x x 12 Sequence of Operation x x x x x x x x x x N A 13 Fan Menu Sequence x x x x x x x x x x N A 14 Heat Maximum setpoint x x x x...

Page 6: ...upied Cool Heat Setpoints network Input SNVT_temp_p nviSetpoint This input network variable is used to allow the occupied temperature setpoints only to be changed via the network from a single analog value Note the Stand By and Unoccupied setpoints are not changed The corresponding heating and cooling values are derived from the minimum deadband configuration value Default Null Value 621 81 F 327 ...

Page 7: ...N A Off Not Used 1 0 0 Off Not Used 1 1 to 66 0 5 to 33 Low 1 67 to 133 33 5 to 66 5 Medium 1 134 to 200 67 to 100 High 1 201 to 255 100 3 Not Used 2 0xFF N A N A Auto 0 n N A Off Not Used 1 0 0 Off Not Used 1 0 to 100 0 5 to 50 Low 1 101 to 200 50 5 to 100 High 1 201 to 255 100 2 Not Used 3 0xFF N A N A Auto 0 n N A Off Not Used 1 0 0 Off Not Used 1 1 to 200 0 5 to 100 On High 1 201 to 255 100 On...

Page 8: ... command will release the thermostat to use its own internal occupancy routine driven from one of the digital input or a PIR cover installed on board This network variable input is used to coordinate the Space Comfort Controller with any node that may need to control the heat cool changeover of the unit This input is used in conjunction with nviHeatCool and SeqOper Default Null Value HVAC_AUTO Thi...

Page 9: ...ure Setpoints System Mode Settings Fan Mode Settings Unoccupied Override 0 Yes access Yes access Yes access Yes access 1 Yes access Yes access Yes access No access 2 Yes access No access No access Yes access 3 Yes access No access No access No access 4 No access No access No access Yes access Lockout network input UNVT_nvi nvo nviRemLockout 5 No access No access No access No access This network va...

Page 10: ...as an invalid value in case of a sensor failure Room Humidity network output SNVT_lev_percent nvoSpaceRH This output network variable indicates the space humidity in percent Valid Range 0 to 100 The value 0x7FFF 163 835 will be set as an invalid value to indicate a humidity sensor failure This output network variable is used to indicate the actual occupancy mode of the unit This information is typ...

Page 11: ...Off 06 FanLow 0 Off 1 On 0 Off 07 FanMed 0 Off 1 On 0 Off 08 FanHigh 0 Off 1 On 0 Off 09 UI3 Status 40 to 122 F 40 to 50 C 40 F Open 122 F Close N A 10 BI2 Status 0 activated 1 not activated 1 not activated 11 BI1 Status 0 activated 1 not activated 1 not activated 12 Local PIR Motion 0 No motion 1 Motion 0 No motion 13 Service Alarm 0 No alarm 1 Alarm on 0 No alarm 14 Filter Alarm 0 No alarm 1 Ala...

Page 12: ...lt values Sub Name Valid Range Default value 01 RHdisplay 0 Not active 1 Active 0 02 RHsetpoint 30 to 100 RH 50 RH 03 DehumHyst 2 to 20 RH 5 RH 04 DehumCool 20 to 100 RH 100 RH RH options network input config UNVT_gen_opts nciRHmodel 05 RHcalib 15 to 15 RH 0 RH This configuration property defines the thermostat s common configuration parameters and their settings Valid Range and Default values Sub...

Page 13: ...54 to 100 F 12 to 37 5 C 54 F 12 C 16 Setpoint Type 0 Permanent 1 Temporary 0 17 Temporary Occ Time 0 1 2 3 up to 24 hours 2 hours 18 Deadband 2 3 4 or 5 F 1 to 2 5 C 2 F 1 C 19 Calibration Room Sensor 5 F 2 5 C 0 C 20 Auxiliary Contact Config 0 Aux Contact used for reheat 1 Aux NO with occupancy 2 Aux NC with occupancy 3 Aux NO with occupancy Fan On 4 Aux NC with occupancy Fan On 5 Remote control...

Page 14: ... defines the maximum period of that expires before the specified network variable outputs will automatically be updated Valid Range 0 sec to 6553 4 sec Setting nciSendHrtBt to 0 disables the Send Heartbeat mechanism Default Null Value 0 0 sec no automatic update Minimum Send Time network input config SNVT_time_sec nciMinOutTm This configuration property defines the minimum period of time between a...

Page 15: ...AC_HEAT X 3 Heating Reheat 3 HVAC_COOL 2 Cooling Reheat 4 Pipe Application 3 HVAC_COOL X 0 Cooling Only 0 HVAC_AUTO 1 HVAC_HEAT 4 Cool Heat 4 Pipes 1 Heating Only 3 HVAC_COOL X 2 Cooling Reheat 0 HVAC_AUTO 1 HVAC_HEAT 5 Cool Heat 4P Reheat 3 Heating Reheat 1 HVAC_HEAT X 1 Heating Only 0 HVAC_AUTO 3 HVAC_COOL 4 Cool Heat 4 pipes 1 Cooling Only 1 HVAC_HEAT X 3 Heating Reheat 0 HVAC_AUTO 3 HVAC_COOL ...

Page 16: ...raphic User Interface GUI Objects The following objects should be typically used in a GUI nvoSpaceTemp occupied_heat nciSetpts unoccupied_heat nciSetpts occupied_cool nciSetpts unoccupied_cool nciSetpts nvoSpaceRH RHsetpoint nciRHmodel nvoOutdoorTemp nvoDischAirTemp nviOccManCmd nvoEffectOccup heat_output_primary nvoUnitStatus cool_output nvoUnitStatus ServiceAlarm nvoSccStatus FilterAlarm nvoSccS...

Page 17: ...17 Figure 2 Graphical User Interface GUI example of a Fan Coil system ...

Page 18: ...Polarity insensitive Multi drop Free Topology Termination for Free Topology Network Segment One RC network with Ra 52 3Ω 1 1 8W Termination for Doubly Terminated Bus Network Segment Two RC network with Ra 105Ω 1 1 8W Number of transceivers per segment Up to 64 Baud rate 78000 bits per second 1 Network segment length varies depending on wire type Table 1 Summary of Specifications for a TACO LON Net...

Page 19: ...19 Maximum Number Of Devices Up to 64 transceivers are allowed per network segment If your network requires more than 64 transceivers a repeater is then required to extend your network ...

Page 20: ...ents The following sections describe the various terminators and terminations procedure Free Topology Network Segment In a free topology segment only one termination is required and may be placed anywhere on the free topology segment There are two choices for the termination 1 RC network with Ra 52Ω 1 1 8W 2 LPI 10 Link Power Interface with jumper at 1 CPLR setting Doubly Terminated Network Segmen...

Page 21: ...en binding a node onto the network an XIF file is needed The XIF file has information that is used by the network management tool to help ease the installation and maintenance process of a node It is also used for offline configuration of the node APB and NXE When running an application program associated with a XIF file an APB or NXE file is needed Please note that the thermostats have the APB fi...

Page 22: ...ill refuse any upload from non RoHS software to a RoHS device or vice versa The PID change has been instituted in order to prompt an incompatibility message from your Niagara based system Figure 5 RoHS and Non RoHS Marking and Program IDs XIF APB and NXE File Names and Corresponding PIDs Used on thermostat XIF file names APB NXE file names Associated PID Non RoHS VT7200 VT7300 Series T7X FC XIF T7...

Page 23: ...ultaneously the Up button and the Down button located on the keypad interface of a VT7300 device the program ID and the Neuron ID LonWorks Unique ID contained in the device are transmitted to the commissioning or service tool The Status LED will blink when the device accepts the Service Pin command Figures 6 and 7 show an example of a Service PIN request made through a commissioning tool Figure 6 ...

Page 24: ...ion Possible Cause Solution The LON network has too many devices Do not exceed the maximum number of devices and maximum length allowed by the EIA 485 specifications Too many devices were installed without any repeaters Repeaters need to be installed as specified in this document The LON cable runs are broken Locate the break and correct wiring Thermostat does not come online The thermostat does n...

Page 25: ... based fluids or certain chemical additives to the systems or other abuse will not be covered by this warranty If in doubt as to whether a particular substance is suitable for use with a Taco product or part or for any application restrictions consult the applicable Taco instruction sheets or contact Taco at 401 942 8000 Taco reserves the right to provide replacement products and parts which are s...

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