Model 8670 SUREFLOW Room Pressure Controller Manual - TSI

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For example, with 8 bars displayed and an operating setpoint of 100 ft/min, the integral deadband is between 80 and 120 ft/min. When the measured room pressure velocity is within this range, integral control is used. However, when the room pressure velocity falls below 80 ft/min or rises above 120 ft/min, PID control is used until the operating setpoint is reached. WARNING: When the SENSITIVITY is set on 10 bars, the system is always in PID control. It is recommended that the SENSITIVITY be set at 9 bars or less. SPEED The SPEED item is used to select the speed of control. When this item is selected, a bar graph is shown on the display. There are 10 bars, each one representing 10% of optimal speed. Starting from the right side (with + sign), 10 bars displayed indicates 100% of maximum speed. This is the fastest the controller will operate. With 9 bars displayed, the controller operates at 90% of optimal speed; with 8 bars, the controller operates at 80% of optimal; and so on. ACCESS CODE The ACCESS CODE item is used to select whether an access code is required to enter the CONTROL menu. The ACCESS CODE item prevents unauthorized access to the CONTROL menu. This item is disabled and is not indicated on the display during initial start-up. The ACCESS CODE is enabled by turning the ACCESS CODE to ON. END OF MENU The END OF MENU item informs the user that the end of the CONTROL menu has been reached. The user can press either the SELECT key or the MENU key to back out to the main menu level. Defaults The SUREFLOW is shipped with a set of factory default values already programmed in memory. These default values are listed in the Control worksheet found in Table 3. Table 3. SUREFLOW Control Defaults Item Range/Options Default Value SENSITIVITY 0 to ±100 FT/MIN ±50 ft/min (5 bars) SPEED 100% to 10% 50% (5 bars) ACCESS CODE ON or OFF OFF 36 Chapter 8 ■
PART THREE Diagnostics & Troubleshooting Chapters 9, 10 and 11 cover all aspects of troubleshooting and maintenance of the SUREFLOW Room Pressure Controller. This part is written to give maximum help to the person maintaining, diagnosing or troubleshooting the control system. TSI realizes that many users of TSI equipment have little or no experience with room pressure variable air volume controls. Chapter 9 describes the diagnostics menu. The diagnostics menu is a great help when troubleshooting problems. Chapter 10 describes routine maintenance and repair parts. Chapter 11 describes troubleshooting the SUREFLOW Room Pressure Controller. Chapters 9 and 11 are used together to both diagnose and troubleshoot the system. If you have an idea of the cause of the problem, review Chapter 11 to see if the symptom is covered. If you have no idea what the problem may be, start with Chapter 9 to diagnose possible causes. Troubleshooting the majority of problems can usually be quickly narrowed to one area if the following question can be answered: Are all the system components working? If no, see "Hardware Symptoms" section in Chapter 11 to check for proper wiring and installation of components. If yes, see "Software Symptoms" section in Chapter 11. The diagnostics and troubleshooting are very thorough and should resolve most problems the user may encounter. If you need assistance or further explanation, contact TSI. TSI is committed to providing not only high quality products, but also outstanding service. Please have the following information available prior to contacting your authorized TSI Manufacturer's Representative or TSI at (800) 777-8356 (U.S. and Canada) or (001 651) 490-2711 (other countries): -Model number of unit -Revision level -Software revision level -Serial number -Building where unit is installed The above information will greatly reduce troubleshooting and maintenance time. 37
Page 1: Model 8670 SUREFLOW TM Room Pressur
Page 4 and 5: Copyright ©- TSI Incorporated/Sept
Page 7: PART ONE Introduction Chapters 1, 2
Page 11 and 12: General Discussion Chapter 2 How To
Page 13 and 14: Chapter 3 Operation The SUREFLOW Ro
Page 15 and 16: Front Panel Displays Digital Displa
Page 17: Keys with Blue Characters sounding
Page 21 and 22: Programming Instrument Chapter 4 St
Page 23 and 24: ❺ Press the SELECT key to access
Page 25: Figure 3. Block Diagram: Items avai
Page 28 and 29: HIGH ALARM The high alarm function
Page 31 and 32: Chapter 6 Configure Menu The SUREFL
Page 33 and 34: NETWORK ADDR The NETWORK ADDR item
Page 35 and 36: Chapter 7 Calibration Menu The SURE
Page 37 and 38: ❸ Press the SELECT key to gain ac
Page 39: WARNING: Calibrating the span on th
Page 45 and 46: Chapter 9 Diagnostics Menu The SURE
Page 47 and 48: HIGH RELAY The HIGH RELAY item is u
Page 49 and 50: ACCESS CODE The ACCESS CODE item is
Page 51: ❻ Press the SELECT key to initiat
Page 54 and 55: Replacement Parts All components of
Page 56 and 57: Hardware Symptom Possible Cause Cor
Page 62: Software Symptom Possible Cause Cor
Page 65 and 66: PART FOUR Appendices The appendices
Page 67 and 68: Appendix A Specifications Model 867
Page 69 and 70: Introduction to SUREFLOW Appendix B
Page 71 and 72: ✦ There is a 20-second delay betw
Page 73 and 74: Remote Setpoint Input A remote cont
Page 75 and 76: Technical Description Appendix C Co
Page 77 and 78: which is input to an electric dampe
Page 79 and 80: Appendix D SUREFLOW Wiring Diagrams
Page 81 and 82: Figure 9. SUREFLOW wiring diagram f
Page 83: Appendix E Access Codes These are t

Model 8670 SUREFLOW Room Pressure Controller Manual - TSI

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