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Summary of Contents for Ruskin TDFi-RT
- Page 1 Air Quality Solutions Installation and Maintenance Manual Model: TDFi-RT Fan Inlet Airflow and Temperature Measurement Station Electronic Thermal Dispersion Sensing Technology ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE OR OBLIGATION...
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Page 2: Table Of Contents
Contents APPLICATIONS ..........................3 CONFIGURATIONS ........................4 INSTALLATION ..........................7 IDENTIFYING LOCATION TO MOUNT HOST MONITOR BOX (REMOTE OR LOCAL HOST) ..... 10 LOCATING THE BOOM ARM AND SENSOR ON THE FAN INLET ........... 10 CONNECTING THE SENSOR CABLE ASSEMBLY TO THE HOST OR CLIENT MONITOR BOX ... 13 WIRING ............................ -
Page 3: Applications
0 to 10,000 fpm (0 to 50.8 mps) within ±3% accuracy. The TDFi-RT sensing probes can be installed in retrofit applications or specified on new construction projects. -
Page 4: Configurations
The unique design of the TDFi-RT ensures minimal pressure drop by using less hardware across the fan inlet. The TDFi-RT’s principle of operation is to monitor the airflow using either one or two thermal dispersion sensors at a location in the fan’s inlet where the air entering velocity through the fan changes as the fan speed increases or decreases. - Page 5 * (2) Sensor Cable Assemblies per Fan (10 ft or 25 ft options) 10 ft Standard ** Remote Host Power/Data Cable Assemblies (10’, 25’ & 50’ options) IMPORTANT! The Remote HOST must be located external to the air stream. The interface must be accessible during normal operation &...
- Page 6 * (2) Sensor Cable Assemblies per Fan (10 ft or 25 ft options) 10 ft Standard ** Client Power/Data Cable Assembly. (18 in, 32 in, 44 in, 50 in, 10 ft, and 25 ft options) *** Remote Host Power/Data Cable Assemblies (10 ft, 25 ft, and 50 ft options) IMPORTANT! The Remote HOST must be located external to...
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Page 7: Installation
Software Configuration Information for Commissioning: After the installation described in this document is complete, please refer to the TDFi-RT Technical Bulletin for information regarding configuration options. The Technical Bulletin document can be viewed or downloaded at this location: http://www.ruskin.com/model/tdfi-rt... - Page 8 The Ruskin TDFi-RT system includes the following standard or optional components/configurations: HOST Monitor Box or REMOTE HOST Monitor Box REMOTE HOST COMMUNICATIONS CABLE (if REMOTE HOST option is selected and if configuration includes a Client monitor box.) Available in 10 ft, 25 ft, and 50 ft lengths; 10 ft is Standard.
- Page 9 SENSOR HOUSING ASSEMBLY 1 sensor housing assembly per sensor cable assembly. The sensor housing assembly is shipped with the sensor opening positioned properly on the boom arm. However, the sensor housing can be rotated on the boom arm in the field ± 90° from the factory-set position to ensure the airflow passes directly through the sensor opening in its final install position.
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Page 10: Identifying Location To Mount Host Monitor Box (Remote Or Local Host)
Unlike a HOST monitor box, a CLIENT monitor box can be installed inside the fan plenum area (in closer proximity to the fans). Depending on the number of fans and the equipment supplied, the TDFi-RT can be installed with one or two sensors per fan for any number of fans that make up an array. - Page 11 The sensor should be cantilevered into the airstream such that the sensor opening is positioned on the circumference of an imaginary circle that measures two-thirds of the fan’s inlet diameter (D). Adjust the boom arm assembly so that the sensor is as deep into the throat of the fan inlet as possible without interfering with the operation of the fan.
- Page 12 (turbulence) in the air entering flow pattern. The design of the TDFi-RT will fully compensate during the calibration process for normal variance in sensor placement. However, it is critical that the sensor opening is positioned correctly after the boom arm assembly has been secured so that you can see directly through...
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Page 13: Connecting The Sensor Cable Assembly To The Host Or Client Monitor Box
CONNECTING THE SENSOR CABLE ASSEMBLY TO THE HOST OR CLIENT MONITOR BOX With power OFF, connect the fan inlet sensor to the ports on the HOST or CLIENT monitor box marked EJ-1 and EJ-2. To plug in the sensor cable, match up the black arrow on the monitor box label with the arrow on the cable over-mold. -
Page 14: Wiring Connections
WIRING CONNECTIONS IMPORTANT: Do not run the probe wiring in the same conduit as other AC power wiring or with wiring used to supply highly inductive loads, such as motors, contactors, and relays. Fluctuating, erratic, and inaccurate signal levels are possible when AC power wiring is present in the same conduit as the signal lines. -
Page 15: Host And Remote Host Monitor Box
HOST AND REMOTE HOST MONITOR BOX IMPORTANT: The HOST provides two 4-20mA signals to building automation systems. Do not apply loop power to the HOST or REMOTE HOST monitor boxes. The system requires a two-wire power connection and separate two-wire connections for each analog output. -
Page 16: Client Monitor Box Features
Power Carefully remove the top of the Phoenix Contact screw terminal connector and insert the wires. Tighten the terminals and reconnect them to the controller board. Connect the 24VAC from power source to the HOST; and daisy chain the power from monitor box to monitor box. Connect the 24VAC hot wire to the HOST monitor box terminal labeled 24H. -
Page 17: Configure Settings At Power-Up (If Not Already Configured Or Factory Default Was Performed)
IMPORTANT: Confirm the connections are made to the network and are not to the BACnet or analog connections on the HOST. After the device warms up, the temperature and flow readings will be displayed. Refer to the TDFi-RT Advanced Thermal Dispersion Fan Inlet Airflow Measuring System TECHNICAL BULLETIN for detailed configuration instructions. http://www.ruskin.com/model/tdif-rt FACTORY CONFIGURATION NOTE: Each airflow measuring station is factory configured for the equipment included. -
Page 18: Resetting Factory Default Fan Configurations - Supervisor Menu
The serial number on the outside of the CLIENT box ends with the factory preset rotary’s address. Addresses can be changed if necessary, using the Rotary switch in the CLIENT enclosures only. With boom arms mounted, sensors properly located within fan inlet, and the configuration process noted above completed, the TDFi-RT will display an increasing airflow when the fan speed is increased. -
Page 19: Fan Calibration Procedures
FAN CALIBRATION PROCEDURES When power is initially applied for the first time, the air measurement station is NOT calibrated. Each TDFi-RT fan inlet airflow measurement station must be field calibrated by running the fan at one, two, or three known airflow values or using airflow measurements provided by Test &... -
Page 20: For Fan Arrays Of Same Diameter
‘Press Enter to Calibrate’ will be displayed. Press ENTER. Site ‘Fan Diameter’ will be displayed. Using the UP or DOWN buttons, enter the associated Fan Diameter as measured where the sensors are installed. Press ENTER. iii. ‘Calc’d Area’ will be displayed. Press ENTER. Note: The SqFt value displayed is calculated from the Fan Diameter entered above. - Page 21 Note: 3, 2, or 1 Calibration Points are available for selection. 1-Point is used for fixed speed fans. 2-Point is used with a min airflow (not Zero) and a max airflow. 3-point is used with a min airflow (not Zero ), a medium airflow that is half-way between the min airflow and the max airflow, and a max airflow.
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Page 22: Troubleshooting
TROUBLESHOOTING Problem Possible Cause Corrective Action UI Location & Steps Airflow reading does Calibration Steps have If Fan Array: Menu > Supervisor Menu > Fan Array Config > Fan not match what T&B is not been completed. Use Automatic Array Cal reporting Calibration Feature and Note: Follow Setup Steps... - Page 23 Confirm polarity is Outputs correct. Note: Analog Out (AO) Probe Network and BACNET ports on the primary use interchangeable Ruskin Device Network BACnet MS/TP Outputs connectors. Two client boxes Assign the correct Rotary Address may have the same Address per Fan Client addresses.
- Page 24 Sensor M8 Cable Connection Ruskin M8 Mating Connection Device Internal Normal Operation Sensor(s) assigned to a Verify that all Monitor Menu > Supervisor Menu > Sensor Mgmt > Disp...
- Page 25 Problem Possible Cause Corrective Action UI Location & Steps Received an ‘INPUT User entered a Verify that the user From the Calibration Menu NOT SAVED Out of calibration point value setting for the diameter Menu > Supervisor Menu > Fan Array Config > Fan Range’...
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Page 26: Maintenance
© 2021 Ruskin Company The information provided in this manual is believed to be complete and accurate. Ruskin Manufacturing is a manufacturer and supplier of equipment and, as such, is not responsible for the manner in which its equipment is used nor for infringement of rights of third parties resulting from such use. System design is the prerogative and responsibility of the system designer.
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