CONTENTS HOW TO USE THIS MANUAL ......................V PART ONE ............................. 1 User Basics ......................1 The Instrument ..................... 1 Operator Panel ..................... 3 Alarms........................5 Before Calling TSI ....................6 PART TWO............................. 7 Technical Section ....................7 Software Programming..................7 Menu and Menu Items..................
PART ONE User Basics Reading product manuals should not be a difficult and time-consuming process. This section provides a brief but thorough overview of the P product by maximizing information with minimal reading. These few pages explain the purpose (The Instrument), and the operation (Useful User Information, Digital Interface Module, Alarms) of the unit.
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An example of negative pressure is a bathroom with an exhaust fan. When the fan is turned on, air is exhausted out of the room creating a slight negative pressure in the bathroom compared to the hallway. This pressure differential forces air to flow from the hallway into the bathroom. The P device informs the staff when the room is under proper pressure and provides alarms when the room pressure is inadequate.
Operator Panel The DIM in Figure 3 shows the location of the digital display, keypad and lights. An explanation of the operator panel follows the figure. Figure 3: P Operator Panel - Open Green / Red Light The green light is on when all the conditions for proper room pressure are adequate. This light indicates the isolation room is operating safely.
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TEST Key The TEST key initiates an instrument self-test. Pressing the TEST key activates a scrolling sequence on the display that shows the product model number, software version, and all set point and alarm values. The unit then performs a self test that tests the display, indicator lights, audible alarm, and internal electronics to ensure they are operating properly.
Emergency Key - Red with Black Letters EMERGENCY Key The red EMERGENCY key puts the controller into emergency mode. If the room is under negative room pressure control, the emergency mode will maximize the negative pressure. Conversely, if the room is under positive room pressure control the emergency mode will maximize the positive pressure.
Before Calling TSI The manual should answer most questions and resolve most problems you may encounter. If you need assistance or further explanation, contact your local TSI representative or TSI. TSI is committed to providing high quality products backed by outstanding service. Please have the following information available prior to contacting your authorized TSI Manufacturer's Representative or TSI: - Model number of unit...
PART TWO Technical Section The P is ready to use after being properly installed. The pressure sensor is factory calibrated prior to shipping, and should not need adjustment. The Digital Interface Module (DIM) is programmed with a default configuration that can be easily modified to fit your application. The Technical section is separated into 5 parts that cover all aspects of the unit.
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This section covers programming the instrument through the keypad and display. If programming through RS-485 communications, use the host computer’s procedure. The changes take place immediately upon saving data in the instrument. Programming Keys The four keys with blue characters (refer to Figure 4) are used to program or configure the unit to fit your particular application.
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The SELECT key is used to gain access to specific menu items. To access a menu item scroll through the menu items until item appears. Press the SELECT key and the menu item will now appear on the first line of the display, and the second line will show the item value.
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Programming Example The following example demonstrates the keystroke sequence explained above. In this example the positive pressure low alarm set point will be changed from +0.00035 inches H O to +0.00050 inches H Unit is in normal operation scrolling room PRESSURE pressure, flows, etc.
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Press the SELECT key to save the new SELECT positive low alarm set point. Three short beeps will sound indicating POS LOW ALM that the data is being saved. Saving Data Immediately after the data is saved, the ALARM will return to the menu level POS LOW ALM displaying the menu title on the top line of the display and the menu item on the...
Menu and Menu Items The P is a very versatile device which can be configured to meet your specific application. This section lists all of the menu items available to program and change (except diagnostics menu). Changing any item is accomplished by using the keypad, or if communications ®...
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SETPOINTS ALARM CONFIGURE CALIBRATION SETPOINT LOW ALARM DISPLAY AVG SENSOR ZERO SUPPLY SETPT HIGH ALARM UNITS SENSOR SPAN 2 LOW ALM ROOM VOLUME 2SENSOR ZERO 2 HIGH ALM 2 SENSOR 2SENSOR SPAN MIN SUP ALM ACCESS CODES SUP 1 ZERO ALARM RESET SUP 2 ZERO AUDIBLE ALM...
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SETPOINTS MENU Available on Model 8631-CRC units only SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SETPOINT The SETPOINT item sets the pressure set point for the space. PRESSURE SENSOR TYPE=TSI -0.00100” SET POINT -0.19500 to 0.19500” If the SENSOR TYPE in the PRESSURE menu is TSI, then the range of the set point is from -0.195”...
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ALARM MENU SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE The LOW ALARM item sets the low pressure alarm set points for the OFF,.-0.19500 to PRESSURE ALARM primary sensor. A low alarm condition occurs when the room pressure +0.19500”...
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ALARM MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SENSOR 2 LOW ALM The 2 LOW ALARM items set the low pressure alarm set point for the OFF,.-0.19500 to secondary pressure sensor. A low alarm condition occurs when the +0.19500”...
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ALARM MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SENSOR 2 HIGH ALM The 2 HIGH ALM item sets the high pressure alarm set point. A high OFF, 0 to -0.19500” H HIGH alarm condition occurs when the room pressure rises above the high PRESSURE alarm set point.
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ALARM MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE ALARM ALARM The ALARM DELAY determines the length of time the alarm is 20–600 SECONDS 20 SECONDS DELAY DELAY delayed after an alarm condition has been detected. This delay affects the visual alarm, audible alarm, and relay outputs.
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Alarms do not terminate until the controller returns to set point. The set point must be slightly exceeded before alarm will terminate. The ALARM RESET item selects how the alarms will terminate when controller returns to the safe range. The pressure and flow alarms all terminate the same;...
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CONFIGURE MENU SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE DISPLAY The DISPLAY AVG item selects the display’s averaging period. The DISPLAY 0.75, 1, 2, 3, 5, 10, 20 or 20 seconds AVERAGE display averaging period is the length of time the room pressure has 40 seconds been averaged before being displayed.
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CONFIGURE MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE ACCESS ACCESS The ACCESS CODE item selects whether an access code (pass ON or OFF CODES CODES code) is required to enter the menu. The ACCESS CODE item prevents unauthorized access to a menu.
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CALIBRATION MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SECOND 2SENSOR The 2SENSOR ZERO item is used to calibrate the P NONE Unit is factory SENSOR ZERO secondary pressure sensor. calibrated. No ZERO initial A sensor zero should be established prior to adjusting the sensor span adjustment (see Calibration section following menu item listing).
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CALIBRATION MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SUPPLY SUP21 The SUP2 ZERO item is used to calibrate the P flow station NONE Exhaust flow DUCT 2 ZERO pressure transducer. station FLOW pressure STATION A zero or no flow point needs to be established prior to using the transducer ZERO exhaust flow measurement (see Calibration section following menu...
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CONTROL MENU Available on Model 8631-CRC units only SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SPEED The SPEED item is used to select the control output speed. When this SPEED 1 to 10 bars 5 bars item is selected, a bar graph is shown on the display. There are 10 bars, each one representing 10% of speed.
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CONTROL MENU Available on Model 8631-CRC units only (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE CONTROL CONTROL The CONTROL SIG item determines the control signal’s output Direct or Reverse Reverse SIGNAL direction. As an example; If the control system closes the exhaust damper instead of opening the damper, this option will reverse the control signal to now open the damper.
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CONTROL MENU Available on Model 8631-CRC units only (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE END OF The END OF MENU item informs you that the end of a menu has MENU been reached. You can either scroll back up the menu to make changes, or press the SELECT or MENU key to exit out of the menu.
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INTERFACE MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE The OUTPUT MODE item determines the function of the supply SUPPLY CONT PRESS OUTPUT OUTPUT control contact outputs. This item can be set to the SUPPLY CONT MONIT MODE MODE...
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PRESSURE MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE MAXIMUM MAX OUT The MAX OUT VAL item is used to set the maximum pressure 0.100” H 0.200” H TRANSDUCER reading of the transducer used. This item can be set between 0.1” OUTPUT 2.00”...
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FLOW MENU SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE SUPPLY 1 SUP1 AREA The SUP1 AREA and SUP2 AREA items are used to input the duct 0 to 10 ft SUP2 AREA DUCT AREA sizes for the first and second supply. The duct sizes are needed to (0 to 0.95 m compute the air flowing into the room.
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FLOW MENU (continued) SOFTWARE DEFAULT MENU ITEM NAME ITEM DESCRIPTION ITEM RANGE VALUE MAXIMUM MAX OUT The MAX OUT VAL item is used to set the maximum pressure Pressure based 0.500” H TRANSDUCER reading of the transducer used, or the maximum velocity of the linear 0.100”...
Calibration The calibration section explains how to calibrate the P pressure sensor, including setting the proper elevation, and how to zero a TSI flow station pressure transducer. NOTE: The P pressure sensor is factory calibrated and normally does not need to be adjusted.
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Figure 7: Pressure sensor door slid open Sensor span NOTE: A smoke test and a comparison measurement by an air velocity meter are required to calibrate the pressure sensor. The air velocity meter only gives a velocity reading, so a smoke test must be performed to determine pressure direction.
Maintenance and Repair Parts The Model 8631 P Room Pressure Controller requires minimal maintenance. Periodic inspection of system components as well as an occasional pressure sensor cleaning are all that are needed to ensure that the Model 8631 is operating properly. System Component Inspection It is recommended that the pressure sensor be periodically inspected for accumulation of contaminants.
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Replacement Parts All components of the room pressure controller are field replaceable. Contact TSI HVAC Control Products at (800) 874-2811 (U.S. and Canada) or (001 651) 490-2811 (other countries) or your nearest TSI Manufacturer's Representative for replacement part pricing and delivery. Part Number Description 800646...
Troubleshooting Section The P Room Pressure Controller is designed to be trouble free. However, installation problems or interaction with other HVAC components may cause system problems. The system is easy to troubleshoot if an organized approach to evaluate the system is taken. Troubleshooting is broken down into hardware and software problems.
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TEST - DIM Press TEST key to verify Digital Interface Module (DIM) electronics are functioning correctly. At the end of the self test, the display will show SELF TEST - PASSED if all DIM electronics are good. If unit displays DATA ERROR at the end of the test, the electronics may be corrupted.
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Diagnostics Menu The items in the diagnostic menu (listed below) aid in identifying problems the staff may encounter. The items in this menu temporarily change the function by pressing the keys. No permanent change occurs with these menu items. Items are exited by pressing the MENU key. When an item is exited the P returns to its normal state.
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Sensor Input Menu item - SENSOR INPUT / 2SENSOR IN The SENSOR INPUT (2SENSOR IN) item is used to verify that the DIM or controller electronics is receiving a signal from the sensor. When this item is entered, a voltage will be indicated on the display.
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Troubleshooting Chart Symptom Possible Cause Corrective Action Display is blank. Fuse is blown. Measure voltage at pins 1 and 2 on DIM. The voltage should nominally be: 24 - 40 VDC when using TSI electric actuators 24 - 30 VAC when using TSI pneumatic actuators 24 - 30 VAC when using motor speed drives.
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Symptom Possible Cause Corrective Action Control system is No control output Go into DIAGNOSTICS menu, CONTROL OUT item. A not controlling signal. number between 0 and 255 will be displayed. Pressing the (continued). key increases the number. Pressing the key decreases the number.
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Symptom Possible Cause Corrective Action Control system is Damper is full open Control wires are loose. Check wires and verify control output not controlling or full closed, won’t is working (see no control output signal). If control output test (continued). move (continued).
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Symptom Possible Cause Corrective Action Positive/negative/ Incorrect wiring. Verify wiring is correct between key switch and DIM. neutral key switch doesn’t work. Room mode is Go into CONFIGURE menu, ROOM MODE item. Verify incorrect. ROOM MODE is in key switch position. DIM does not Device has not Go into INTERFACE menu, LON item.
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Symptom Possible Cause Corrective Action Actuator hunting. Control system is Go into CONTROL menu, SPEED item. Turn speed down Display indicates unstable. until hunting is eliminated. If speed is too slow review steady pressure. CONTROL menu items and adjust accordingly to eliminate hunting.
Appendix A Specifications Room Pressure Module Display Range ................-0.20000 to +0.20000 inches H Resolution ..............5% of reading Display Update............0.5 sec Inputs Switch in ..............SPST (N.O.) Switch. Closing switch initiates condition. Flow in ............... 0-10 Volts Outputs Low Alarm Range ............
Appendix B Network Communications Network communications are available on the Model 8631-CRM/CRC. The Model 8631-CRM/CRC can communicate with a building management system through LonWorks protocols. Please refer to the section below for more detailed information. Model 8631-CRM LonWorks Node Object Node Object Network Variables nviRequest...
8631-CRM LonWorks Object R o o m D i r e c t P r e s s u r e M o n i t o r O b j e c t n v o R o o m P r e s s n v 1 S N V T _ p r e s s _ f n v o A i r l o c k P r e s s...
8631-CRC LonWorks Object R o o m D i r e c t P r e s s u r e C o n t r o l l e r O b j e c t n v i E x h O v e r r i d e n v o R o o m P r e s s n v 1 n v 3...
Model 8631-CRM-BAC BACnet MS/TP Object Set Object Type Device Instance *Units Description Analog Input ft/min, m/s, Room Pressure “H O, Pa Analog Input ft/min, m/s, Sec Sens Pressure “H O, Pa Analog Input cfm, l/s Supply#1 Flow Rate Analog Input cfm, l/s Supply#2 Flow Rate Analog Input...
Model 8631-CRC BACnet MS/TP Object Set Object Type Device Instance *Units Description Analog Input ft/min, m/s, Room Pressure “H O, Pa** Analog Input ft/min, m/s, Sec Sens Pressure “H O, Pa** Analog Input cfm, l/s Supply #1 Flow Rate Analog Input cfm, l/s Supply #2 Flow Rate Analog Input...
Appendix C Wiring Diagrams 8631-CRM Back Panel Wiring Input / Output / PIN # Communication Description 1, 2 Input 24 VAC to power Digital Interface Module (DIM) and sensor. NOTE: 24 VAC becomes polarized when connected to DIM. 3, 4 Output 24 VAC power for Pressure Sensor 5, 6...
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8631-CRC Back Panel Wiring Input / Output / PIN # Communication Description 1, 2 Input 24 VAC to power Digital Interface Module (DIM) and sensor. NOTE: 24 VAC becomes polarized when connected to DIM. 3, 4 Output 24 VAC power for Pressure Sensor 5, 6 Input 0–10 VDC pressure sensor signal...
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Jumper Wiring Information - Damper Systems The Model 8630 P Room Pressure Controller modulates electric actuated dampers mounted in the exhaust or supply ducts. The TSI damper/actuators are shipped configured to be mounted in the exhaust duct. The actuators have a jumper installed to meet the exhaust duct configuration. If the damper is mounted in the supply duct, the damper will probably rotate in the opposite direction.
Appendix D Access Codes There is an access code to the different menus of the P . When an access code is required, pressing the following key sequence will provide access to the menus. Key # Configure EMERGENCY MENU MENU MENU...
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