MANUAL INSTALLATION. Venturi Valve. VV Series. v203 - Issue Date: 03/25/ Price Industries Limited. All rights reserved.

Transcription

1 MANUAL INSTALLATION Venturi Valve VV Series v203 - Issue Date: 03/25/ Price Industries Limited. All rights reserved.

2 TABLE OF CONTENTS Product Overview Safety Precautions... 1 Caution to Contractors...1 General...2 Receiving Inspection...2 Flow and Pressure Data...3 Installation and Mounting Instructions Installing the Venturi Valve Unit...4 Controls...7 Wiring Diagram... 9 Linear Module Indicators...10 Elevation Correction...10 For local area support, please contact your local Price Critical Controls Representative For factory technical support, please contact: P: E: PCCFieldService@priceindustries.com W: Display Navigation Initial Startup - LCD Setup Tool Only...11 Info Menu...12 Service Menu...12 Setup Menu...13 Calibration Menu...14 Constant Volume Control Constant Volume...15 Constant Volume Valve Reassembly...15 Operation & Maintenance Start Up & Operation...16 Troubleshooting...16 Replacement Parts...16

3 PRODUCT OVERVIEW Safety Precautions 1. Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction. 2. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. 3. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer: Caution to Contractors Venturi Valves are not intended for use as temporary heat or ventilation sources during building construction. The units are not designed nor equipped to operate in a dusty construction environment. Internal parts can become coated in construction dust, resulting in loss of calibration and excess wear on the product which in turn can contribute to reduced life. PRICE INDUSTRIES 2975 Shawnee Ridge Court Suwanee, Georgia USA (770) Fax (770) Before servicing or cleaning unit, switch power off at service panel and lock service panel to prevent power from being switched on accidentally. 5. Protect flammable materials nearby when brazing, Use flame and heat protection barriers where needed. Always have a fire extinguisher ready. 6. The manufacturer assumes no responsibility for personal injury or property damage resulting from improper handling, installation, service or operation of the product. pricecriticalcontrols.com VENTURI VALVE - Manual 1

4 PRODUCT OVERVIEW General Price Venturi Valves (VV) are designed to supply or exhaust air independent of pressure. The valves are built to operate within a specified duct pressure range. Constant volume valves are designed with the linkage locked at a specified flow from the factory but can be manually adjusted in the field. Variable volume valves (VAV) are designed to accept direct digital controls (DDC) based on either electronic flow feedback or airflow sensor feedback depending on the application. All VAV valves will be shipped with the actuator mounted and calibrated. Receiving Inspection After unpacking the assembly, check carefully for shipping damage. If any damage is found, report it immediately to the delivering carrier. During unpacking and installation, do not handle valve by the inlet plunger shaft or plunger shaft brace. Damage may result from improper handling. Do not tamper with the linkage assembly as the valve is shipped factory calibrated. VENTURI VALVE W/ CONSTANT VOLUME VENTURI VALVE W/ VARIABLE VOLUME Never carry or lift the valve by the linkage assembly support brackets, or control box. 2 VENTURI VALVE - Manual pricecriticalcontrols.com

5 PRODUCT OVERVIEW Flow and Pressure Data Standard Venturi Valve Unit Size Airflow Range Medium Pressure ( W.C.) Airflow Range Low Pressure ( W.C.) Min. Flow (CFM) Max. Flow (CFM) Min. Flow (CFM) Max. Flow (CFM) Weight (lbs) Shutoff Venturi Valve NOTES: Unit Size Airflow Range Medium Pressure ( W.C.) Airflow Range Low Pressure ( W.C.) Min. Flow (CFM) Max. Flow (CFM) Min. Flow (CFM) Max. Flow (CFM) Weight (lbs) Factory calibrated controls must be selected within the above flow range limits. When setting the flow, the value must be greater than the minimum setting and within the range limits. Selection of air flow below the listed values is not recommended. Stability and accuracy may not be acceptable at lower than recommended air flow limits. 2. Pressure ranges are as measured across valve static pressure ports. 3. Please refer to VV submittals for all dimensional data. 4. Weights are ± 3 lbs for single sizes and ± 5 lbs for multibody sizes depending on options 5. Valves are rated to operate between F within 10-95% RH non-condensing. 6. Standard Venturi Valves are available in Horizontal, Vertical Up, and Vertical Down orientations. 7. Shutoff Venturi Valves are not available in Vertical Up or Vertical Down orientations 8. Size 114, 214, 314, and 414 Shutoff Venturi Valves are not available in Low Pressure. pricecriticalcontrols.com VENTURI VALVE - Manual 3

6 INSTALLATION AND MOUNTING INSTRUCTIONS Installing the Venturi Valve Unit Before Installation FIGURE 1 1. Ensure that all packing material has been removed from the inside of the valve body. 2. Visually inspect the valve for damage If damage is found, DO NOT INSTALL. Please contact a Price representative. 3. Visually inspect the red tamper proof paint located on the mechanical linkage (including actuator and potentiometer, when available) if paint is cracked, DO NOT INSTALL. Please contact a Price representative. 4. During operation, the center shaft of the venturi valve may extend past the inlet or discharge of the valve. Ensure that a minimum six inches (6") of duct space is clear of obstacles from both the valve inlet and discharge. General Installation 1. Ductwork to be supported within eighteen inches (18") of the venturi valve unless otherwise specified. 2. Orientate the venturi valve as described on the AIRFLOW label. WARNING: For optimal operation, the valve should be mounted within ± 10 degrees of the specified orientation. 3. Mount valve according to the airflow direction arrow on the AIRFLOW label. When the valve is installed, the airflow arrow direction should agree with the system airflow. 4. Leave eight inches (8") of free space in all directions of the controls enclosure to facilitate future access. 5. The controls enclosure may be rotated 360 degrees around the ductwork. NOTE: In fume hood applications, or in conditions that may cause condensation inside the ductwork, the enclosure should not be mounted within +/- 30 degrees from straight down. 6. Do not screw into Phenolic or Kynar coated valves. Screws will compromise the venturi valve body and its resistance to corrosion. Warranty will be void if screws are used. FIGURE 2 FIGURE 3 PRICE ORDER NO: JOB NAME: UNIT TAG: LINE: SERIAL NO: UNIT SIZE: FLOW RANGE: PRESSURE RANGE: ORIENTATION: 1 inch SPECIFICATIONS criticalcontrols@priceindustries.com criticalcontrols@price-hvac.com F, 0 FT ELEV. - PLEASE REFER TO MANUAL FOR ELEV. CORRECTION TESTED: QA: DATE: *O A001* Slip-Connection Venturi Valves 1. Mount the venturi valve by slipping both the inlet and the discharge one inch (1") into the appropriate sized ductwork. 2. Fasten the venturi valve to the ductwork using six (6) sheet metal screws per a slip connection as shown in Figure Seal the duct work using duct sealer as shown in Figure 3. 4 VENTURI VALVE - Manual pricecriticalcontrols.com

7 INSTALLATION AND MOUNTING INSTRUCTIONS Slip-Connection Venturi Valve with Drawband Clamps 1. Slide drawband clamps completely onto the inlet and discharge ductwork as shown in Figure 4. FIGURE 4 2. Mount the venturi valve by slipping both the inlet and the discharge one inch (1 ) into the appropriate sized ductwork Size 14 Configuration 3. Apply appropriate duct tape to seal valve to duct work if required. Two full wraps around the connection of appropriate duct tape is recommended. 4. Slide the drawband clamps onto the valve ensuring that at least one and a half inches (1.5 ) of the drawband clamps are in contact with the valve body as shown in Figure Tighten both nuts to ensure that the drawband clamp is tightly fastened to the valve body and duct work. Neither the valve nor the band clamp should shift after fastening. 6. Do not screw through the bandclamp into the venturi valve body. Size 8, 10, 12 Configuration FIGURE 5 Size 14 Configuration Flange-Connection Venturi Valves 1. Align the duct flange holes with the venturi flange holes and fasten using a bolt, lockwasher and nut. Fasten every hole to reduce airflow leakage as shown in Figure 6. Size 8, 10, 12 Configuration NOTE: To minimize airflow leakage, use a gasket between the ductwork flange and the venturi flange or seal with duct sealant once connecting bolts are tightened. Flange-Connection Venturi Valve with Companion Flanges 1. Slide companion flanges completely onto the inlet and discharge ductwork with the flanged end of the companion flanges toward the free space. 2. Align hole pattern to match opposing companion flange as shown in Figure Continuously weld companion flange to duct work to ensure zero leakage. 4. Follow Installation of Flange-Connection Venturi Valves to complete installation of Venturi Valve. FIGURE 6 FIGURE 7 pricecriticalcontrols.com VENTURI VALVE - Manual 5

8 Air flow VENTURI VALVE INSTALLATION AND MOUNTING INSTRUCTIONS Venturi Valves with Silencer 1. Position silencer before the inlet of the venturi valve when the venturi valve is operating as an Exhaust valve. Position silencer on the discharge of the venturi valve when the venturi valve is operating as a Supply valve. Configurations shown in Figure 8. FIGURE 8 SUPPLY CONFIGURATION 2. Price recommends that the silencer be installed prior to installing the venturi valve. EXHAUST CONFIGURATION Air flow Air flow 3. Use the support method prescribed for the duct work in the job specifications. FIGURE 9 4. Mount the silencer to the duct. The slip connection should overlap a minimum of one inch (1 ) to ensure a proper fit as shown in Figure Mount the venturi valve by slipping the appropriate end into the available duct work and the other into the free slip connection of the silencer. Each slip connection should overlap a minimum one inch (1 ) to ensure a proper fit. FIGURE Fasten all connections using six (6) sheet metal screws per a slip connection as shown in Figure Seal slip connections using duct sealer as shown in Figure 11. Venturi Valves with Water Coil Please refer to the Water Coils Service and Installation Manual for full installation instructions. Manual available on the Price website at 1. Water coils are only available in supply orientation. 2. Configuration as shown in Figure 12. FIGURE 11 1 inch 3. Use the support method prescribed for the duct work in the job specifications. Venturi Valves with Electric Coil Please refer to the F-99 Electric Coils Service and Installation Manual for full installation instructions. Manual available on the Price website at 1. Electric coils are only available in supply orientation. 2. Configuration as shown in Figure Use the support method prescribed for the duct work in the job specifications. FIGURE 12 FIGURE 13 Supply Configuration Air flow 6 VENTURI VALVE - Manual pricecriticalcontrols.com

9 INSTALLATION AND MOUNTING INSTRUCTIONS Controls 2 TO 10 VDC CONTROL Actuation Variable volume Price Venturi Valves are shipped with a factory mounted actuator calibrated to specific flows. Price offers three actuator control solutions: VDC Line Volts 24 VAC Transformer BIk (1) Red (2) Wht (3) Common- Hot + Y Input, 2 to 10v 2. Floating point Control signal (2-10 VDC) Org (5) U Output, 2 to 10v 3. On/Off 1 0 Please note that On/Off and 2-10 VDC actuators are available in both standard speed and high speed. Floating point actuators are only available in standard speed. FLOATING POINT CONTROL CAUTION Do not press the actuator clutch when airflow is present. Pressing the actuator clutch while airflow is present may damage the actuator. Line Volts 24 VAC Transformer BIk (1) Red (2) Common- + TC, LSC, FHC, and PC Controllers Wht (3) + Please refer to the TC, LSC, FHC and PC Installation Manuals available on the Price Critical Controls website at The indication of direction is valid for switch position NOTE: The indication of direction (1 or 0) may be changed by Price to ensure that the actuator operates as specified by the customer. ON / OFF CONTROL 24 VAC Transformer Line Volts Blk (1) Red (2) Common- + a open a closed a Wht (3) + The indication of direction is valid for switch position pricecriticalcontrols.com VENTURI VALVE - Manual 7

10 INSTALLATION AND MOUNTING INSTRUCTIONS LMX - Linear Module The Linear Module (LMX) is a digital sensor that is used with a Venturi valve to monitor airflow. The LMX will output a 2-10 VDC signal that is proportional to the current airflow through the valve. In addition, the module has the second function of measuring the current pressure across the valve and signaling both a 2-10 VDC pressure output signal and an alarm through the Alarm Light and Contact Closure. The alarm is activated when the valve is working outside of its normal operating range. Each LMX is factory calibrated to the Venturi valve it ships with. Do not switch modules in field. Contact Price for replacements. Service Port for LCD Setup Tool or Price Linker 2-10 VDC Pressure Signal Output with Contact Closure Input and Alarm Light Connection to External Position Sensors 2A Protective Fuse Status Indication Lights Pluggable 24 VAC Power Terminal with 2-10 VDC Flow Signal Output criticalcontrols@priceindustries.com criticalcontrols@price-hvac.com Static Pressure Ports CALIBRATION AIRFLOW (VDC OUT) VALVE PRESS (VDC OUT) AIRFLOW (CFM) VALVE PRESS (" W.C.) FLOW FEEDBACK SIGNAL (CFM) = 119 * (LM VDC) VALVE PRESSURE SIGNAL ("WC) = 0.63 * (SP VDC) LMX FLOW OUTPUT SIGNAL 1000 ACTUATOR INPUT SIGNAL SIGNAL (VDC) F, 0 FT ELEV. - PLEASE REFER TO MANUAL FOR ELEV. CORRECTION FLOW (CFM) TAG: DATE: 8 VENTURI VALVE - Manual pricecriticalcontrols.com

11 INSTALLATION AND MOUNTING INSTRUCTIONS Wiring Diagram DIAGRAM pricecriticalcontrols.com VENTURI VALVE - Manual 9

12 INSTALLATION AND MOUNTING INSTRUCTIONS Linear Module Indicators The LMX is fitted with three indicator LED s: Fault, Status and P. Status. These indicator LED s are used to represent the flow, pressure and error states for the LMX and will provide information to the user without any additional tools. Please reference the following chart when working with the LMX: Fault LED Status LED P. Status Condition Off/Green Green N/A Unit is properly working Red Green N/A External Position Sensor is disconnected or the out of calibration range N/A Alternating Blue/ Yellow N/A Unit requires calibration N/A Flashing Blue N/A Unit is field calibrated N/A Solid Blue N/A Unit was previously field calibrated N/A N/A Off Pressure in range N/A N/A Red Pressure outside of range Flashing Red Flashing Red Flashing Red Corrupt unit Elevation Correction The flow reading from the LMX is CFM at sea level. The following elevation correction factor should be applied to the flow reading when valves are installed at a location with elevation exceeding 1000 feet: Elevation (ft) Elev. Correction Factor To apply correction factor, use the following formula: CFM at Elevation = (CFM at Sea Level)*(Elev. Correction factor) 10 VENTURI VALVE - Manual pricecriticalcontrols.com

13 DISPLAY NAVIGATION Initial Startup LCD Setup Tool Only The LMX is factory calibrated, however some settings may require field adjustment. Please order a (LCD Setup) service tool (only one is required per job site). Settings modified through the setup tool are stored in EEPROM and are not lost if the power is cycled. When the LCD Setup Tool is powered from the LMX module, it will display the following information: PRICE ELECTRONICS PCC LCD PCC LDC LINEAR MODULE VENTURI SIZE CURRENT FLOW PRICE ELECTRONICS Start up screen PCC LCD Displays firmware version of LCD Setup Tool (Firmware must be 2.24 or higher to support LMX) PCC LDC Displays firmware version of LCD Setup Tool (Firmware must be 2.24 or higher to support LMX) LINEAR MODULE Displays firmware version of LMX VENTURI SIZE Displays valve and duct size CURRENT FLOW Displays current airflow, based on potentiometer LCD T - Stat Setup Tool Includes RJ12 cable Available Valve and duct sizes Single 8 Single 10 Single 12 Single 14 Double 10 Double 12 Double 14 Triple 12 Linear Module RJ -12 Cable Plugs into LCD T-Stat and then into RJ12 connector of LMX VENTURI VALVE - Manual pricecriticalcontrols.com 11

14 DISPLAY NAVIGATION Info Menu Scroll through menu with up and down keys. Press Enter Menu to apply the changes. *---Saving---* will display as your changes are applied. VENTURI SIZE VENTURI SIZE Shows the valve and duct size A2D VALVE 1 A2D VALVE 2 A2D VALVE 3 A2D VALVE 4 FLOW VALVE 1 FLOW VALVE 2 FLOW VALVE 3 FLOW VALVE 4 LMX ALARM OPT LMX ALARMSTAT PRESSURE EXTRAPLTD PTS OUTPUT RANGE PRESENT UNAVAILABLE IN ALARM NORMAL A2D VALVE 1 A2D VALVE 2 A2D VALVE 3 A2D VALVE 4 FLOW VALVE 1 FLOW VALVE 2 FLOW VALVE 3 FLOW VALVE 4 LMX ALARM OPT UNAVAILABLE Value refers to POT1, POT2, or POT3 of connected LMX. Direct reading from the potentiometer. Range is 0 to Value refers to POT1, POT2, or POT3 of connected LMX. Direct reading from the potentiometer. Range is 0 to Value refers to POT1, POT2, or POT3 of connected LMX. Direct reading from the potentiometer. Range is 0 to Value refers to POT1, POT2, or POT3 of connected LMX. Direct reading from the potentiometer. Range is 0 to Current airflow based on the position sensor reading. Value refers to POT1, POT2, and POT3 of connected LMX Current airflow based on the position sensor reading. Value refers to POT1, POT2, and POT3 of connected LMX Current airflow based on the position sensor reading. Value refers to POT1, POT2, and POT3 of connected LMX Current airflow based on the position sensor reading. Value refers to POT1, POT2, and POT3 of connected LMX Indicates if alarm is present or unavailable Indicates if alarm is present or unavailable LMX ALARMSTAT NORMAL The valve is operating outside of the pressure limits and is generating an alarm The valve is operating within the module's pressure limits PRESSURE Current pressure in inches of water EXTRAPLTD PTS Diagnostic information OUTPUT RANGE VDC output signal Service Menu Hold down menu button for 5 seconds. Display shows Passcode:. Use up and down keys in this sequence: Down Up Up Down. SETUP CALIBRATION VENTURI SIZE A2D VALVE 1 Allows you to change various options Shows information based on the units calibration 12 VENTURI VALVE - Manual pricecriticalcontrols.com

15 DISPLAY NAVIGATION Service Menu ALRM HI LIMIT ALRM LO LIMIT ALARM HI HYS. ALARM LO HYS. ALARM DELAY VALVE# TO SET VALVE# OFFSET VALVE# TWEAK RESET INTERVL RESETDEFAULTS OUTPUT RANGE MINVOLTOUTPUT MAXVOLTOUTPUT ALRM HI LIMIT ALRM LO LIMIT ALARM HI HYS. ALARM LO HYS. ALARM DELAY VALVE# TO SET VALVE# OFFSET VALVE# TWEAK RESET INTERVL RESETDEFAULTS OUTPUT RANGE MINVOLTOUTPUT The maximum static pressure before contact closure is closed. Alarm Hi Hysteresis allows this limit to increase by its value without generating an alarm, this is to reduce chatter. The alarm LED on the unit will turn on. Ranges from inches of water, or 0.1 above Alarm Lo Limit. The minimum static pressure before contact closure is closed. Alarm Low Hysterisis allows this lmit to decrease by its value without generating an alarm, this is to reduce chatter. The alarm LED on the unit will turn on. Ranges from 0.3 to 2.9 inches of water or 0.1 below Alarm Hi Limit. Sets a threshold that prevents contact closure from "chattering" when the pressure is on the edge of an alarm. Affects only Alarm Hi Limit. Ranges between 0.1 to 0.7 inches of water. Sets a threshold that prevents contact closure from "chattering" when the pressure is on the edge of an alarm. Affects only Alarm Lo Limit. Ranges between 0.1 to 0.7 inches of water. The length of time in seconds between changes to the contact closure. Between 1 and 600 seconds. Default is 10 seconds. Valve number to set refers to POT1, POT2, and POT3 of the connected LMX. Allows adjustments to th valve that is selected. Applies an offset of +/-1000 cfm to the set valve number. Changes the full range output voltage by +/-100% to the set valve number Determines how often the unit will reboot itself. Adjusted between 1 and minutes (10 days). A zero will ensure the unit never resets. Default is 1440 minutes (24 hours) Resets the unit back to factory defaults Determines output voltage ranges corresponding to the flow. Visible is "Output Range" is set to Custom. If you enter a range that is an option in "Output Range" these menu items will disappear again. pricecriticalcontrols.com VENTURI VALVE - Manual 13

16 DISPLAY NAVIGATION Calibration Menu Scroll through menu with up and down keys. Press Enter/Menu to apply your changes *---Saving---* will display as your changes are applied RUN/CAL MODE READ-ONLY RUN/CAL MODE RUNTIME RUNTIME The unit is calibrated and is running normally CALIBRATION CALIBRATION Unit is uncalibrated and will have an undefined behavior EXTRAPLTD PTS EXTRAPLTD PTS Diagnostic information DAC TEST MODE CAL POINT # VALVE # TO SET CHANGE POINT ADC POINT # 1 ADC POINT # 2 ADC POINT # 3 ADC POINT # 4 ADC POINT # 5 ADC POINT # 6 ADC POINT # 7 ADC POINT # 8 CFM POINT # 1 CFM POINT # 2 CFM POINT # 3 CFM POINT # 4 CFM POINT # 5 CFM POINT # 6 CFM POINT # 7 CFM POINT # 8 NORMAL TEST PATTERN DAC TEST MODE TEST PATTERN CAL POINT # VALVE # TO SET CHANGE POINT ADC POINT # 1 ADC POINT # 2 ADC POINT # 3 ADC POINT # 4 ADC POINT # 5 ADC POINT # 6 ADC POINT # 7 ADC POINT # 8 CFM POINT # 1 CFM POINT # 2 CFM POINT # 3 CFM POINT # 4 CFM POINT # 5 CFM POINT # 6 CFM POINT # 7 CFM POINT # 8 The unit will output a DC signal that is determined by position of the valve plunger. Also affected by Flow Offset and Output Tweak (Setup menu) Turns on a test that will output a Dog tooth waveform with a min and max value 0 and 10 VDC Allows selection of a point along the calibration curve. The ADC and CFM values for this point will appear in the ADC point# and CFM Point #. Range: 1 to 8 Valve number refered to POT1, POT2, and POT3 connected LMX Allows adjustments to the valve that is selected. 14 VENTURI VALVE - Manual pricecriticalcontrols.com

17 CONSTANT VOLUME CONTROL Constant Volume Price constant volume valves are factory calibrated for a selected air flow and can be installed in the field without adjustment for maintenance free operation. The valve can be adjusted in the field if changes to the air flow are required. The control arm is held in place with two locking nuts. CONSTANT VOLUME CONTROL ASSEMBLY CAUTION: Ensure the air flow is shut off prior to adjusting to prevent possible injury from crank arm. Loosen Nut A, to provide more threaded bar length to adjust Nut B. Turning Nut B clockwise (as viewed from the inlet) will adjust the control to decrease the flow rate. To increase the flow rate, adjust Nut B counterclockwise. Once the correct airflow has been achieved, Nut A should be re-tightened. FIGURE 14 TAG FIGURE 15 CLEVIS PIN WARNING: Constant Volume Valves are shipped disassembled. Do not install valve. Constant Volume Valve Reassembly 1. Cut tie and remove instruction tag from the valve as shown in Figure 14. For a multi-body valve there will be more than one cable tie. 2. Remove the clevis pin from the location shown in Figure 15. The hair pin must be taken out first. Keep both the clevis pin and hair pin for Step 4. FIGURE 16 FIGURE 17 HAIR PIN 3. Move the control arm to line up the holes as seen in Figure Re-insert clevis and hair pin, as shown in Figure 17. CONTROL ARM CLEVIS PIN pricecriticalcontrols.com VENTURI VALVE - Manual 15

18 OPERATION & MAINTENANCE Start Up and Operation Before start up operation, familiarize yourself with the unit, options, accessories and controls so you understand proper system operation. All personnel should have a good working knowledge of general start-up procedures and have the appropriate start-up and balancing guides available for consultation. Air System Balancing All duct-work must be complete and connected, and all grilles, filters, access doors and panels must be properly installed to establish actual system operating conditions BEFORE beginning air balancing operations. Each individual unit and attached duct-work is a unique system with its own operating characteristics. For this reason, air balancing is normally done by balance specialists who are familiar with all procedures required to properly establish air distribution and fan system operating conditions. These procedures should not be attempted by unqualified personnel. After the proper system operation is established, the actual unit air delivery should be recorded in a convenient place for future reference. The manufacturer assumes no responsibility for undesirable system operation due to improper design, equipment or component selection, and/or installation of ductwork, grilles, and other field supplied components. Troubleshooting Symptom Noise Actuator Does Not Operate (Where Available) No Feedback Signal (Where Available) Actual airflow does not match airflow feedback Pressure is in alarm on module but airflow is present Possible Cause 1. Foreign material in valve 2. Vibrating duct work 1. Confirm that power is being delivered to the unit 2. Verify control signal 3. Verify that the disconnect switch (where available) is not open 4. Verify that the fuse (where available) is not blown 1. Confirm that power is being delivered to the unit 2. Ensure External Position sensors are plugged into LMX and that there is no damage to the wire 1. Confirm static pressure is within specified range 2. Confirm that there is no blockage inside the duct or valve 3. Confirm that there is no damage to any tamper proof paint 4. Verify that there are no ductwork leaks before or after the valve 5. Verify that the valve is installed in the correct orientation 6. When LMX is present, verify flow reading at module and compare to flow equation in controller 1. Measure static pressure across valve on available brass tees to confirm pressure reading 2. Ensure that red tubing runs from the valve inlet to the high (red) port and the green tubing runs from the valve discharge to the low (green) port Replacement Parts Replacement parts are available. Please contact a Price Critical Controls Application Specialist. Please see page 1 of this document for contact information. 16 VENTURI VALVE - Manual pricecriticalcontrols.com

19 NOTES pricecriticalcontrols.com VENTURI VALVE - Manual 17

20 This document contains the most current product information as of this printing. For the most up-to-date product information, please go to Price Industries Limited. All rights reserved.