Controls Lite. Controls Instruction, Operation, and Maintenance. IOM-C Part Number

Transcription

1 Controls Lite Controls Instruction, Operation, and Maintenance Part Number

2 Page 1

3 Table of Contents Valent Overview... 5 Controls Lite Strategy... 5 Equipment and Control... 6 Third-Party Control Responsibilities... 7 Third-Party Device Power... 7 Occupancy... 7 Airflow... 8 Temperature... 8 Controls Lite Packaged Refrigeration... 8 Cooling... 8 Heating... 9 Compressor Capacity... 9 Hot Gas Reheat Control... 9 Dehumidification Enabled... 9 Dehumidification Disabled... 9 Hot Gas Reheat Valve Positioning Hot Gas Reheat Purge Cycle ASHP Defrost Cycle Defrost Cycle Initiated Defrost Cycle Terminated Defrost 3 Strike Lockout Head Pressure Control Compressor Staging Control Interfaces Valent Controller pgde/lcd Terminal Connecting the Terminal Keypad Button Overview Controller Addresses plan Address IP Address Web User Interface Connecting to the Web UI Web UI Home Web UI LCD Web UI Trends Datalogger Trends Live Trends User Interface Navigation Alarm Button Target Button...18 Escape Button...18 Up/Down Arrow Buttons...18 Enter Button...18 Main Menu...18 Unit Enable...18 Unit Status...18 Main Unit Status...19 Active Request Signals...19 Lockout Conditions...20 Outdoor Air Conditions...21 Hot Gas Reheat Request...22 Compressor Request...22 Ref Circuit Information...23 Condenser Fan Control...24 Ctrl Variables Menu...24 Temp Control...24 Refrigeration...25 Compressor Control...25 Condenser Control...26 Heat Pump Control...27 Advanced...28 Login...28 Adv. Setpoints...28 Alarm Management...29 Unit Save/Restore...30 Unit Config...30 Unit Settings...31 Service Info...32 EOL Test...33 Manual Overrides...33 Alarm Menu...35 Active Alarms...35 Alarm History...35 Clear History...35 Export Alarms...35 Alarms and Safeties...36 Digital Inputs and Sensor Failures...36 Supply Fan Alarm...36 Low Press Sw Alm A/B...36 High Press Sw Alm A/B...36 Ref Press Trans Alm A/B...36 Shutdown Input Alm...36 Page 2

4 Clg Coil LAT Sens Alm OA Temp Sens Alm OA Humidity Sens Alm Non-Adjustable Alarms and Safeties Defrost 3 Strike High T-Memory Writes Retain Mem Write Error Adjustable Alarms and Safeties Cooling Ambient Lockout Heating Ambient Lockout HP Heating Lockout Cooling Coil Staging Safety Low Clg Coil LA Temp High Sat Disch Temp A/B Low Sat Suct Temp A/B IOM Appendices Appendix A Terminal Strip Wiring Appendix B Controls Lite Furnace Limitations Appendix C Compressor Staging Appendix D Valent Controller I/O Controller Inputs Controller Outputs Appendix E LCD Map Appendix F Cutouts and Definitions Appendix G Tables...53 Unit Status Line Table...53 Alarm ID Table...55 Sensor Error Code Table...55 Appendix H Trend Logs...56 Controls Lite Trend...56 Controls Lite Trend Reals Ints...57 Appendix I Upgrading an Application Program...58 USB Flash Drive Upload...58 Appendix J Connecting to the Controller...60 FTP Connection...60 USB Connection...60 Transferring Files...61 Appendix K plan Addresses...62 Valent Controller plan...62 LCD Hand-Held Terminal...62 Appendix L Glossary...63 Acronyms...63 Definitions...63 Index...64 Page 3

5 Safety The customer must provide proper equipment and fully-trained installers to follow local safety requirements when receiving, installing, or servicing equipment. Consult all local building, electrical, occupational safety, and gas codes. Lock out all power supplies before servicing the unit to prevent accidental startup. All fan blades should be secured to prevent wind rotation. Remove any restrictive device(s) before restoring power. The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFC and HCFC) as of July 1, Approved methods of recovery, recycling, or reclaiming refrigerant must be followed. Fines and/or incarceration may be levied for non-compliance. WARNING Improper installation, adjustment, service, or alteration can cause property damage, personal injury, or loss of life. Installation, startup, and service must be performed by a qualified installer, service agency, or gas supplier. Page 4

6 Valent Overview Valent units are constructed with premium features to reduce energy consumption, increase control over occupant comfort, and lengthen the product s service life. An integrated controls platform safely and reliably controls all internal components, including, but not limited to, the packaged refrigeration system. Sometimes the building management system (BMS) requires more control over the unit. For this type of application, Valent offers an alternative control strategy called Controls Lite. Controls Lite allows a third party to provide more customized control over the unit, while Valent s Controls Lite application safely maintains the operation of the packaged refrigeration system. Controls Lite Strategy Controls Lite is designed to allow third-party control of a Valent packaged DX, split DX, or Heat Pump unit while maintaining the safeties of the packaged refrigeration system. To achieve this, the Valent controller is factory installed and factory commissioned. This controller is responsible for the operation of the refrigeration components installed in the unit. Valent assures the safety of the refrigeration system by monitoring pressures and temperatures contained within the packaged refrigeration. Valent requires input from a third-party device to provide: supply air airflow, compressor control, hot gas reheat control, emergency shutdown, and heating or cooling operation selection, when the unit is configured as a heat pump. Additionally, occupancy, temperature, airflow, and modulation control are provided by a third-party device that is supplied and installed in the field. This third-party device interfaces to the Valent unit via a terminal strip in the control cabinet, as represented in Figure 1. THIRD-PARTY CONTROLLER TERMINAL STRIP VALENT REFRIGERATION CONTROLLER REFRIGERATION COMPONENTS NON-REFRIGERATION COMPONENTS Figure 1: Third-party controller as part of Valent Controls Lite application. Page 5

7 Equipment and Control The following chart for Controls Lite shows the equipment that is provided, installed, and controlled by Valent and the equipment that is to be provided, installed, and controlled by a third-party vendor. Equipment includes, but is not limited to, sensors, VFDs, and actuators that are necessary for unit operation. Please refer to the unit s submittal information for the exact unit configuration and selected options. Third-Party Responsibility Valent Responsibility Equipment Type Provided By Installed By Controlled By Alarm Output (Refrigeration System Alarms) ASHP Defrost Mode CO 2 Sensor Compressor Control Request Cooling Coil Leaving Air Temperature Sensor * Duct Static Pressure Sensor Emergency Shutdown Input Energy Recovery Face/Bypass Modulating Damper Actuator Energy Recovery Wheel Enable (VFD optional) Energy Recovery Wheel VFD Speed (VFD optional) Energy Recovery Wheel Status Exhaust Airflow Measuring Station (Transducer) Exhaust Air Temperature Sensor Exhaust Fan VFD Enable Exhaust Fan VFD Speed Exhaust Fan Status Filter Pressure Switch Heating/Cooling Control Mode Hot Gas Reheat Request Hot Water Valve Low Temperature Protection Mixed Air Temperature Sensor Modulating Electric Heat Modulating Indirect Gas Furnace Enable(s) Modulating Indirect Gas Furnace Digital Digital Analog Analog Analog Analog Digital Analog Digital Analog Digital Analog Analog Digital Analog Digital Digital Digital Analog Analog Digital Analog Analog Digital Analog Page 6

8 Equipment Type Provided By Installed By Controlled By Outdoor Air and Return Air Modulating Damper Actuators Outdoor Air and Return Air Modulating Damper End Switch Outdoor Airflow Measuring Station (Transducer) Outdoor Air Humidity Sensor * Outdoor Air Temperature Sensor * Pre-Heater Output Enable Space Humidity Sensor Space Setpoint Adjustment Space Temperature Sensor Static Space Pressure Sensor Supply Airflow Measuring Station (Transducer) Supply Air Temperature Sensor Supply Fan VFD Enable Supply Fan VFD Speed Supply Fan Status Analog Digital Analog Analog Analog Digital Analog Analog Analog Analog Analog Analog Digital Analog Digital * Valent installs an OAT and Cooling Coil Leaving Air Temp combination sensor for the use of the Valent controller only. If the third party needs this information for controls, separate sensors should be installed by the third party. Third-Party Control Responsibilities Occupancy, temperature, airflow, modulation control, and third-party device power with Controls Lite are the responsibility of the third party through a third-party device. This control not only includes the timing of each occupied mode, but logic for enabling and modulating all non-refrigeration components. Third-Party Device Power Powering the device is the responsibility of the third party. The third party will supply and install a transformer to power the device. This power cannot be taken from the Valent control panel. The thirdparty device cannot be mounted in the Valent electrical control panel. Occupancy Scheduling and occupancy mode control are the responsibility of the third party. Page 7

9 Airflow Maintaining the proper airflow through the unit is the responsibility of the third party. The supply fan, outdoor air and return air damper actuators, and exhaust fan (if equipped) are enabled and modulated via the third-party device. To maintain proper airflow, the outdoor air and return air dampers modulate inversely through a single signal. When modulating the supply air volume, Valent recommends limiting turndown to 50% of the full-load airflow to ensure the refrigeration system can adequately modulate to meet the desired temperature setpoints. Modulating below 50% may result in loss of space temperature control and have a negative impact on the refrigeration system components. Temperature Controls Lite requires the third party to make decisions based on air temperatures, relative humidity, and setpoints to heat, cool, dehumidify, or economize. The third-party device needs to specify the required amount of cooling, heating (if equipped with electric, gas furnace, or heat pump), hot gas reheat (if equipped), and energy recovery (if equipped) capacity is necessary to meet the current requirements. Analog output signals are sent via the terminal strip in the controls cabinet to interface with the Valent controller or directly with equipment installed in the unit. For heat pump applications, a digital output to control the position of the refrigerant reversing valve is also connected via the terminal strip. See Appendix A for further information regarding control input types and terminal strip wiring. When modulating the gas furnace heating capacity, Valent recommends a maximum temperature rise and a minimum airflow for constant volume and variable air volume units. The criteria must be met when controlling the staging/modulation of the gas furnaces in order to prevent improper combustion and damage to the unit. Please see Appendix B for maximum temperature rise and minimum airflow specific to the unit and furnace size. Please refer to the unit s submittal information for the exact gas furnace performance data. Controls Lite Packaged Refrigeration The Valent integrated controller (Carel c.pco) is programmed to safely start, stop, and operate the refrigeration system based on request signals received from a third-party device. Cooling and Heating requests for compressor operation in a heat pump utilize the same Compressor Control Request analog input. Upon receiving a request for compressor operation (greater than 0.5 VDC), the controller enables the refrigeration system. Cooling The following conditions are required for the Valent controller to enable a unit and start compressors in cooling mode: (DX and Heat Pump Models) Shutdown Input: Closed Unit Enable Screen: Enabled Damper Positioning: OAD/RAD End Switch Closed (proof of airflow) Supply Fan Status: Closed for 10 seconds (VFD Speed > 5Hz proves airflow) Heating/Cooling Control Mode: Cooling mode (Open) (Heat Pumps Only) Outdoor Air Temperature: > Cooling Ambient Lockout (50.0 F) (adj.) Cooling Coil Leaving Air Temp: > Coil Low Temp Limit (42.0 F) (adj.) Saturated Discharge Temperature: < High SDT Setpoint (130.0 F) (adj.) Refrigerant Pressure Switches: Closed (High and Low) Refrigerant Pressure Transducer: Normal (25.0 to psi) Compressor Control Request: > 5.0% (0.5 VDC) Page 8

10 Heating The following conditions are required for the Valent controller to enable a unit and start compressors in heating mode: (Heat Pump Models Only) Shutdown Input: Closed Unit Enable Screen: Enabled Damper Positioning: OAD/RAD End Switch Closed (proof of airflow) Supply Fan Status: Closed for 10 seconds (VFD Speed > 5Hz proves airflow) Heating/Cooling Control Mode: Heating mode (Closed) (Heat Pumps Only) Outdoor Air Temperature: < Heating Ambient Lockout (80.0 F) (adj.) Outdoor Air Temperature: > Heat Pump Heating Low Ambient Lockout (17.0 F ASHP, adj.) Saturated Suction Temperature: > Heat Pump Heating Low SST Lockout (-15.0 F WSHP, adj.) Refrigerant Pressure Switches: Closed (High and Low) Refrigerant Pressure Transducer: Normal (25.0 to psi) Compressor Control Request: > 5.0% (0.5 VDC) Compressor Capacity The Valent controller will proportionally vary the amount of compressor capacity as the Compressor Control Request varies from the third-party controller from 0.5 VDC to 10.0 VDC in one of two ways: Modulating the Digital Scroll compressor Enabling/disabling fixed stage compressors Refer to Appendix C Compressor Staging for more details on compressor staging and the Compressor Control Request. Hot Gas Reheat Control Units with hot gas reheat (HGRH) installed control dehumidification, which provides a more desirable environment. When the unit is in cooling mode, the third-party device enables dehumidification through the Hot Gas Reheat Request signal to the Valent unit. Opening the HGRH valve allows the refrigerant to circulate through the reheat coil and dehumidify the supply air. Dehumidification Enabled Dehumidification is enabled and the HGRH valve modulates between fully closed and fully open when all of the following conditions are met: Control Mode: Cooling Compressor Control Request: > 5.0% (0.5 VDC) for two consecutive minutes Hot Gas Reheat Request: > 5.0% (0.5 VDC) Dehumidification Disabled Dehumidification is disabled and the HGRH valve modulates to fully closed or fully open when the any one of the following conditions occurs: Hot Gas Reheat Request: < 2.5% (0.25 VDC) for 90 consecutive seconds Compressor Control Request: < 2.5% (0.25 VDC) Control Mode: Heating Page 9

11 Hot Gas Reheat Valve Positioning The HGRH valve position depends on the current requested operation of the unit. In cooling mode, the HGRH valve position is based upon whether dehumidification mode is enabled or disabled and if there is a compressor operating in the HGRH circuit. When the unit is in heating mode, the HGRH valve is always at its maximum open position. The following information lays out the position of the valve at a given time: Cooling Mode Dehumidification Enabled o HGRH circuit compressor(s) on: Follows the Hot Gas Reheat Request ( VDC= 0-100% Open) o HGRH circuit compressors off: Open (100.0%) o Hot Gas Reheat Purge Cycle: Open (100.0%) (Once per hour unless the valve is 80.0% open for two minutes or more) Cooling Mode Dehumidification Disabled o HGRH circuit compressor(s) on: Closed (0.0% Open) o HGRH circuit compressors off: Open (100.0%) Heating Mode (Heat Pump Only) o HGRH circuit compressor(s) on: Open (100.0%) o HGRH circuit compressors off: Open (100.0%) Many building codes prohibit the use of a mechanical heating source for dehumidification (reheat) purposes in certain applications. Please check with local codes for each application before planning a form of reheat other than hot gas reheat. Hot Gas Reheat Purge Cycle When the HGRH valve has not been at least 80.0% open for two consecutive minutes or more within the last hour and a compressor is running in the Reheat Circuit, the HGRH Purge Cycle is enabled. During a Purge Cycle, the HGRH valve is forced to 100.0% open for the Purge Duration (2 mins) (adj.). A HGRH Purge Cycle may occur once every Purge Interval (60 mins) (adj.). ASHP Defrost Cycle An Air-Source Heat Pump periodically needs to initiate a defrost cycle to remove the accumulation of frost and/or ice from the outdoor coil. Defrost Cycle Initiated The Defrost Cycle is initiated if either of the following conditions occurs: The Saturated Suction Temperature (SST) is less than -5.0 F; OR The SST is less than 30.0 F; AND o SST is less than the Outdoor Air Dewpoint minus 25.0 F for two minutes. During the defrost cycle, the following actions occur within the unit: Any operating compressors are turned off. The reversing valve switches to the cooling position. The condenser fans switch the active setpoint to cooling control. A ten-second Mode Switch Delay occurs. The Compressor Ramp is forced to 100%; enabling all compressors. The Hot Gas Reheat Ramp is disabled; forcing the HGRH Valve to close. Page 10

12 Defrost Cycle Terminated The Defrost Cycle is terminated and compressor operation returns to heating mode when the following condition occurs: The SST is greater than or equal to the ASHP Cancel Defrost (60.0 F) (adj.) setpoint. Defrost 3 Strike Lockout The unit has the ability to disable heating with the packaged refrigeration based on the operation of the Defrost Cycle. If either of the following occurs, Heat Pump Heating operation is disabled: The Defrost Cycle has been active for more than the ASHP Max Defrost Time (10 min) (adj.); OR The unit has entered the Defrost Cycle three times in any one-hour period. The defrost lockout resets and compressor operation returns to heating mode when any one of the following conditions occurs: The Defrost 3 Strike Lockout has been active for one hour; OR The Outdoor Air Temperature (OAT) is greater than the Recorded OAT plus 5.0 F; OR The Outdoor Air Humidity (OAH) is greater than the Recorded OAH plus 20.0%. NOTE: When Defrost is Active, an auxiliary heat source should be enabled by the third-party device to maintain the heating load. A digital output is provided to the third party at TB Head Pressure Control The Valent controller automatically manages the refrigerant pressure in the refrigerant circuit when a compressor is enabled with one of the three following methods: Standard Head Pressure Control uses mechanical pressure cycling switches to maintain a consistent condensing temperature in cooling and dehumidification modes of operation. This method of head pressure control is not available in heat pump units. Active Head Pressure Control 1.0 (AHPC 1.0) consists of one modulating condenser fan with a VFD; all additional condenser fans are fixed speed. AHPC 1.0 contains up to four stages of fan control depending on the number of condenser fans installed. AHPC 1.0 controls to maintain a consistent condensing temperature in cooling, dehumidification, and heating modes of operation. Active Head Pressure Control 2.0 (AHPC 2.0) consists of up to eight condensing fans with design features to reduce the audible impact and are driven by energy-efficient brushless-dc motors. All condensing fans of the refrigerant circuit are modulated in unison for sound reduction, efficiency, and greater control over refrigerant pressures. A unit may have two refrigerant circuits. AHPC 2.0 controls to maintain a consistent condensing temperature in cooling, dehumidification, and heating modes. Page 11

13 Compressor Staging Compressor staging is handled by the Valent controller. As the Compressor Control Request increases or decreases, the controller stages compressors on or off depending on the following: Compressor Minimum Timers: Expired (Off or On) Compressor Delay Timers: Expired (Add or Subtract) Cooling Coil Safeties: Not Active (normal operation) When dehumidification is enabled, the controller enables the compressor(s) in the HGRH circuit first. When dehumidification is disabled, the controller enables the Digital Scroll compressor first (if installed) and a compressor in the HGRH circuit next. Below is a list of unit sizes, circuits, and stages. See Appendix C for more information regarding compressor staging. CASING SIZE NOMINAL TONNAGE CIRCUIT A STAGES CIRCUIT B STAGES HGRH CIRCUIT 5 1 (DSC) N/A A 8 1 (DSC) N/A A 10 1 (DSC) N/A A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A (DSC) A NOTE: DSC indicates the circuit with a Digital Scroll compressor Page 12

14 Controls Lite Operations Control Interfaces As standard, Controls Lite includes: Carel c.pco controller Carel pgde/lcd hand-held terminal Web User Interface (Web UI) Compressor control sequences Mechanical cooling oil management sequences Safeties and Alarms for the refrigeration system Each Valent unit is equipped with a factory-installed and tested controller and a hand-held terminal to interface with the controller. Setpoints and system settings can be changed through the pgde/lcd terminal interface on the outside of the unit s electrical control panel. The Web UI is accessed by opening an internet browser and typing the IP address of the controller into the browser. A CAT5 Ethernet cable connects the computer to the controller at the left Ethernet port on the c.pco controller. The user can change the system settings and setpoints via the Web UI. Valent Controller A Carel c.pco controller (Figure 2) is standard in each Valent unit. The analog and digital inputs and outputs of the controller are used to read information from temperature sensors, pressure switches, pressure transducers, and inputs from a third-party device and to control the compressors, condenser fans or water valves, a HGRH valve (if equipped), and a reversing valve if the unit is configured as a heat pump. The Valent controller is responsible for all safeties and operation of the refrigeration system according to the unit setpoints and third-party request signals. Figure 2: Carel c.pco Controller pgde/lcd Terminal The pgde/lcd User Terminal (Figure 3) is a hand-held terminal with a backlit display and a keypad with six buttons. The terminal requires no additional programming and displays the information from the controller as if it were installed on that board. The pgde/lcd terminal is used to view information, configuration, and options available to the user. Pressing the buttons individually or in a combination allows for viewing information, editing parameters, uploading software, and commissioning. NOTE: The remainder of the document will refer to this as the LCD. Connecting the Terminal Connecting the terminal to the controller (Figure 4) requires a six-wire, straight-through phone cable. The phone cable provides both the data transmission and the power for the terminal. The distance using this direct connect method must be less than 50 meters. See the Carel c.pco User Manual for different configurations if the distance is greater than 50 meters, there is more than one controller to share the terminal, or more than one terminal to a controller. Figure 3: Carel pgde Terminal Figure 4: Terminal connection to c.pco Controller Page 13

15 Keypad Button Overview The following table is a reference for the function of each button on the keypad. For more details, refer to the section on User Interface Navigation. Button Description Backlight Functions ALARM TARGET (Home) ESCAPE UP ENTER DOWN Red Amber Green Green Green Green Press to view current alarm conditions. Press with Enter and hold for 3 seconds to access the system menu. Press to go directly to the Main Menu. Backlight indicates that the Unit is enabled. Press from Main Menu to go to the System Status. Press from within a menu to go one menu level back. Press when editing a variable to cancel editing. Press to navigate through the menus/screens. Press after Entering into a variable to increase the current value. Press to Enter a highlighted menu. Press to Enter a writable variable and press again to confirm the new variable value. Press to navigate through the menus/screens. Press after Entering into a variable to decrease the current value. Controller Addresses Each c.pco controller has two addresses; a plan address and an IP Address. Both addresses are needed for proper operation of the hand-held terminal and the Web UI. plan Address The plan address of the controller is a unique address within a network of c.pco controllers. The plan address is necessary for the identification of the I/O in the network and is used by the hand-held display to communicate to the boards. The following are the addresses of the controller and the terminal. Valent c.pco Controller: 1 LCD Terminal: 32 If the terminal and the controller are not communicating, please see Appendix J for instructions on setting the plan address for the controller and linking the hand-held terminal to the controller. IP Address The IP Address of the controller is a unique address within the TCP/IP network in which it resides. The IP Address is used to access the WEB UI. The controller is capable of allowing a DHCP Server to assign an address or have a static IP Address assigned manually. From the factory, the controllers have DHCP disabled and are configured with the following IP Address information: DHCP: Off () IP Address: Subnet Mask: Gateway: DNS: Page 14

16 Setting the IP Address The default address of the controller may need to be changed to match a network. The network administrator will provide an IP address for each unit controller residing on the network. This address can be set manually at the controller in the Advanced Menu. To change or view the IP Address of the controller, perform the following steps: Press the Target ( ) button to go to the Main Menu. Arrow to the Ctrl Variables selection of the Main Menu and press Enter ( ). Arrow to the Advanced selection of the Ctrl Variables Menu and press Enter. Arrow to the Unit Settings selection of the Advanced Menu and press Enter. Arrow to the Unit IP Address selection of the Unit Settings Menu and press Enter. The Unit IP Address screen (Figure 5) appears with the current settings of the controller. Press Enter to change the current settings. o Enter one octet of the IP address information at a time, pressing the arrow buttons to change the value of the quadrant then Enter to save and go to the next quadrant. o After updating the information with the necessary changes, press Enter to navigate through the remaining entries to the Save Changes box. o Use an arrow button to change the box to be selected, then Figure 5: Unit IP Address screen press Enter. o Changing the IP Address requires power to be cycled to the controller before the new address is implemented. Web User Interface The Web User Interface (Web UI) allows the user to access the controller from a computer, tablet, or smart phone connected to the network on which the controller resides. Web pages are installed on the controller s memory to give the user control from a remote location. The ability to download trend logs and live trend data is available to the user through this interface. Connecting to the Web UI Open an internet browser from a computer, tablet, or phone with proper credentials to access the network on which the controller is installed. Type in the controller s IP Address in the URL (Figure 6) and press enter. The Valent c.pco Onboard Web UI Home page appears. Figure 6: URL Address Web UI Home The Web UI Home page (Figure 7) has a picture of a Valent unit with links to the other two pages. Page 15 Figure 7: Valent c.pco Onboard Web UI Home Page

17 Web UI LCD The Web UI LCD page (Figure 8) displays a virtual terminal complete with keypad, screen, and LEDs. This virtual terminal emulates the same information and actions that occur on the hand-held LCD terminal. The user can navigate screens, edit setpoints, view information and unit operation, and clear alarms from the Web UI virtual terminal. Multi-key functions are also available from the Web UI to access system menus and functions. Web UI Trends The Web UI Trends page has two tabs that give the user different trending options. Datalogger gives the user the ability to view the trend logs stored on the controller. Live gives the user the ability to select the variables to view and trend for a short period of time. Figure 8: Valent c.pco Onboard Web UI LCD Page Datalogger Trends The Datalogger tab (Figure 9) allows the user to select the log to load from the controller and the start and stop time (dates and times) or do a quick load for a number of past days. The logs contain predetermined information that is stored once a minute for seven days. Refer to Appendix H Trend Logs for the information Figure 9: Datalogger graph configuration that is stored in the logs. When the log loads, a graph is displayed (Figure 10). Rolling the mouse over the graph shows the value of each of the variables at that particular time. The slider bar at the bottom of the graph allows the user to zoom in to a smaller section of the graph. Figure 10: Datalogger Graph Sample Page 16

18 After the graph is built, changes can be made to the graph from colors and line style to which variables are visible on the graph. A list of available variables is shown below the graph (Figure 11). Press the Apply properties button at the bottom of the list after making any changes for the graph to be updated. The title of the graph and the axis labels may also be changed by inserting text in the boxes above the graph (Figure 12) and clicking the Update labels button. The trend logs available to the Datalogger tab are also downloadable. By clicking the Save log data or Figure 11: Variables available for Datalogger graph Save button (previous Figure 9), the log is transferred as a.csv file to the user s computer. The file is saved as getlog.csv in the Downloads folder. The file can then be renamed and moved to a different location on the computer. The file can be opened with Excel or notepad. If the graph image is desired, click the View as Image button and right click the image and select Save image as to save the graph image. Figure 12: Datalogger graph name selection Live Trends Users may also choose to run a live trend with variables selected on the Live tab of the Trends page. Choose scan period presets, scan period in seconds, graph time span in minutes, and select the variables desired for the trending graph. Click the Show/Hide variables button to view the variables within the program that are available to the live trend graph (Figure 13). Currently selected variables Figure 13: Variables available for Datalogger graph are displayed next to Selected Variables. Click the Show/Hide variables button after selecting the variables for the Live trending graph to hide the variables list. Press the play ( ) button to start recording the live trend variables. Save the trend by clicking the Save live data button. The graph (Figure 14) will save the data recorded for the Graph time span only. A larger Scan period allows for a larger time span. The file is saved as live_data.csv in the computer user s Downloads folder. The graph configuration features for the Live trending graph are the same as the Datalogger graph. Changing the visibility, line color, line style, graph title and axis labels are accomplished as previously discussed. Page 17 Figure 14: Live Trend Graph

19 User Interface Navigation The buttons on the keypad, or virtual keypad in the Web UI, allow the user to navigate from one screen to another, to change setpoints, view and reset alarms, and view current operating conditions. Alarm Button Pressing the Alarm button ( ) accesses any Active Alarms and Alarm History available at the user interface. The Alarm button is also used to reset any active alarms that require a manual reset at the controller. Target Button Pressing the Target button ( ) accesses the Main Menu from any location in the user interface screens. The options available in the Main Menu are Unit Enable, Unit Status, Ctrl Variables, and Alarm Menu. Escape Button The Escape button ( ) is used to navigate one level back from the current screen. If the user is finished setting variables in a sub-menu, the Escape button returns to the previous menu. If the user is editing a variable and decides to not make a change, the Escape button returns to the top of that screen. Pressing the Escape button from the Main Menu returns to the Unit Status loop. Up/Down Arrow Buttons In a menu, the Up ( ) and Down ( ) Arrow buttons scroll through the options that a particular user can access. When viewing the Unit Status loop, the Up/Down arrows move the user from one screen to the next. While editing a variable, the Up/Down arrow buttons allow the user to set the desired value of the variable. Enter Button The Enter ( ) button selects the highlighted menu option. The ENTER button also allows the user to edit variables/setpoints and save a new value. Main Menu The Main Menu is the user s home for unit settings, enabling the unit, viewing unit status, and other information, including but not limited to, time and date, cycle time, sales order information, and program version. The Main Menu can be reached by pressing the Target button ( ) from any screen in the application. Use the Up/Down arrows to scroll through the options available. Use the Enter button to select the highlighted menu option. Unit Enable Unit Enable (Figure 15) allows the user to enable or disable the entire unit from the hand-held or virtual terminal. Press Enter from the Main Menu on Unit Enable and then the Enter button again to enable or disable the unit. When the unit is disabled, the Valent portion of the unit control is not available to operate. This means that the refrigeration system components will not operate regardless of the request signal from the third-party device. Figure 15: Unit Enable Screen Unit Status The Unit Status menu allows the user to view information regarding the current operation of the unit. The screens in this loop are information only. Use the Up/Down arrow buttons ( / ) to scroll through the available screens for the installed options in the unit. Page 18

20 Main Unit Status The Main Status Screen (Figure 16) has four quadrants and a unit status line. Information that is available in the quadrants may change every 3 seconds depending on the options installed in the unit. The values are rounded to the nearest whole number for display on this screen. Upper Left Quadrant (1) The current DX Cooling Coil Temperature is displayed. Upper Right Quadrant (2) The Outdoor Ambient Temperature and Outdoor Relative Humidity are displayed Figure 16: Main Status Screen Lower Left Quadrant (3) This quadrant displays the Compressor Control Request signal converted to a percentage. The Hot Gas Reheat Request signal in percent rotates with the Compressor Control Request (if installed). Both of these signals are sent to the controller from a third-party device. Lower Right Quadrant (4) This quadrant has up to three animated symbols that appear based on the current operation of the unit. Fan blades appear when there is proof of supply airflow. The fan blades are animated when there is proof of supply airflow. The blades disappear when there is no proof of supply airflow. A delay appears above the fan when the unit is waiting for the supply airflow to prove for ten seconds. The timer associated with the delay counts down and then disappears after the ten seconds or proof of airflow ends. The second symbol can be blank, a snowflake for cooling, or a flame for heating. The third symbol can be blank or raining for dehumidification. Unit Status Line (5) The unit status line provides information regarding unit operation. The value on the line rotates every 3 seconds if there is more than one piece of information to display. Information displayed in the status line range from unit status to unit alarm conditions. This information appears at the bottom of the majority of the status screens. For a full list of status line possibilities, see the Unit Status Line Table in Appendix G Tables. Active Request Signals The Active Request Screen (Figure 17) shows the active request signals being sent from the third-party device to the Valent controller. Control Mode for Heat Pumps If the unit is a DX condensing unit (not a heat pump), the line appears blank. If the unit is a heat pump, the current mode of operation appears at the top of the screen. Cooling Control, Heating Control, or Heating/Defrost may appear for an Air-Source Heat Pump (ASHP). Cooling Control or Heating Control may appear for a Water-Source Heat Pump (WSHP). This information appears at the top of the majority of the status screens in a heat pump application. If the unit is not a heat pump, the refrigeration system of the unit will always be in cooling control. Figure 17: Active Request Screen The control mode directly correlates to the position of the reversing valve(s) in heat pump circuit(s). A thirdparty device is responsible for providing a switch to send the control mode to the Valent controller via the terminal strip (TB5-402). Page 19

21 Comp Request The Compressor Control Request signal is received from a third-party device to the Valent controller. The Valent controller uses the signal to stage compressors on or off depending on the amount of cooling or heating that is requested from the third party. The controller requires a 5.0% request (0.5 VDC) to enable the first compressor. When the request falls below 2.5% (0.25 VDC), all compressors will cycle off. Cycling of compressors is also based on add and subtract delays, minimum on and off timers, and alarm conditions that may be present in the unit. If an asterisk (*) appears in front of the Comp Request percentage, the request signal is being manually overridden at the Valent Controller. The percentage shown on this screen is the third-party signal. The third party hardwires the input signal to the Valent controller via the terminal strip (TB5-308). The signal type defaults to VDC and can be configured to utilize a VDC or 4-20 ma signal. The request is displayed as a percentage that correlates with the signal sent to the controller (0.0% to 100.0%). This value is also displayed on the Main Status Screen rounded to the nearest whole percent. HGRH Request The HRGH Request signal is received from a third-party device to the Valent controller telling the controller when to enable dehumidification. The controller requires a 5.0% request (0.5 VDC) to enable dehumidification. The Compressor Control Request must also be requesting a compressor for dehumidification to be enabled. When dehumidification is enabled, the HGRH valve will open to the percent requested by the third-party device. The valve follows the signal unless the compressor(s) in the HGRH circuit are off or a HGRH Purge cycle is active. If the unit is a heat pump, dehumidification is only available when the unit is in Cooling Control. If the heat pump is in Heating Control, the HGRH valve is 100.0% open. When the request falls below 2.5% (0.25 VDC) for more than 90 seconds, dehumidification is disabled. If an asterisk (*) appears in front of the HGRH Request percentage, the request signal is being manually overridden at the Valent Controller. The percentage shown on this screen is the third-party signal. The third party hardwires the input signal to the Valent controller via the terminal strip (TB5-309). The signal type defaults to VDC and can be configured to utilize a VDC or 4-20 ma signal. The request is displayed as a percentage that correlates with the signal sent to the controller (0.0% to 100.0%). This value is also displayed on the Main Status Screen rounded to the nearest whole percent. Clg Coil Temp The current DX Cooling Coil Temperature is also displayed on this screen for a quick reference of the air temperature leaving the DX Coil. This value is also displayed on the Main Status Screen rounded to the nearest whole degree. Lockout Conditions The Lockout Conditions screen (Figure 18) will display No Lockout Conditions unless there is a current lockout due to ambient conditions, a Low Cooling Coil Temperature, or a Low Saturated Suction Temp for WSHP. If a lockout condition is active, the temperature associated with the lockout is displayed. Clg Ambient Lockout The Cooling Ambient Lockout value is compared to the OAT. When the OAT is less than the Cooling Ambient Lockout, the unit is locked out due to the ambient temperature being too low to allow the unit to provide cooling. Any operating compressors at this time are turned off. The cooling low ambient condition automatically resets when the OAT rises above the lockout temperature plus 2.0 F. The compressors are available to resume operation after the auto reset occurs. Figure 18: Cooling Ambient Lockout Page 20

22 Htg Ambient Lockout The Heating Ambient Lockout value is compared to the OAT. When the OAT is greater than the Heating Ambient Lockout, the unit is locked out because the ambient temperature is too high to allow the unit to provide heating. Any operating compressors at this time are turned off. The high ambient condition automatically resets when the OAT falls below the lockout temperature minus 2.0 F. The compressors are available to resume operation after the auto reset occurs. HP Heating Lockout The HP Heating Lockout affects only ASHPs and WSHPs during operation in heating mode. Low Ambient Lockout (ASHP) If the unit is configured as an ASHP, the HP Heating Low Ambient Lockout setpoint is compared to the OAT. When the OAT is less than the HP Heating Low Ambient Lockout and the unit is in heating mode, packaged refrigeration heating is locked out because the ambient temperature is too low to allow the unit to provide heating with compressor operation. Any operating compressors are then turned off. The low ambient condition automatically resets when the OAT rises above the lockout temperature plus 5.0 F. Low SST Lockout (WSHP) If the unit is configured as a WSHP, the HP Heating Low SST Lockout setpoint is compared to the SST of each refrigeration circuit. When the SST of a refrigeration circuit is less than the HP Heating Low SST Lockout and the unit is in heating mode, packaged refrigeration heating in that circuit is locked out. Any operating compressors in that circuit are then turned off. The low SST condition automatically resets when the SST rises above the lockout temperature plus 3.0 F. The compressors of the circuit are available to resume operation after the condition is reset. The lockout in the WSHP is a freeze protection lockout. When both circuits are locked out, the unit is not available to heat with the packaged refrigeration. Low Clg Coil Temp When the Cooling Coil Leaving Air Temp (CLT) falls below the Cooling Coil Low Limit for three minutes, the Low Cooling Coil Temp lockout occurs (Figure 19). Any operating compressors at this time are turned off. This low temp limit automatically resets when the CLT rises above the lockout temperature plus 4.0 F for three minutes. Also during that time, no compressors are available to cycle on regardless of the control setpoints and temperature. Figure 19: Low Cooling Coil Temp Lockout Outdoor Air Conditions The Outdoor Air Conditions screen (Figure 20) gives a quick overview of ambient conditions where the unit is installed. Temp The current OAT is displayed. Humidity The Outdoor Air Relative Humidity (OAH) is displayed as a percent. Figure 20: Outdoor Air Conditions Screen The OAT and OAH combination sensor installed by Valent is mounted under the Outdoor Air Hood. The readings from this sensor are for Valent s use only and are not available for third-party use with the Controls Lite application. Page 21

23 Enthalpy and Dewpoint The Enthalpy and Dewpoint are calculated using the temperature and humidity readings from the Outdoor Air combination sensor. The Enthalpy calculation uses the Unit Altitude setting under Unit Settings. These calculations are for Valent s use only and are not available for third-party use with the Controls Lite application. Hot Gas Reheat Request The Hot Gas Reheat Request screen (Figure 21) provides information regarding the control of the Hot Gas Reheat valve and circuit. Status The status of the HGRH circuit appears at the top of the screen. Circuit Disabled, Dehumidifying, or a blank line may appear. Figure 21: Hot Gas Reheat Request Screen A blank line indicates that the HGRH circuit has at least one compressor operating but is not in dehumidification mode. The HGRH Valve Out will be 0.0% open (fully closed) when cooling or 100.0% open when heating (if equipped as a heat pump). Circuit Disabled indicates that the compressor(s) in the HGRH circuit are off. The HGRH Valve Out will be 100.0% open. Dehumidifying indicates that the HGRH circuit has at least one compressor on. The HGRH Valve Out follows the HGRH Valve Req percentage unless the circuit is in a HGRH Purge Cycle. HGRH Valve Req The HGRH Valve Req is the requested open position of the HGRH valve. The value displayed is either the HGRH Request from a third-party device or the Manual Override request from the Valent controller. If the Manual Override is active, an asterisk (*) will appear before the request percentage. HGRH Valve Out The HGRH Valve Out is the open position sent to the HGRH valve actuator. This value may be different than the requested value. The output is dependent on a compressor operating within the HGRH circuit, the HGRH Purge Cycle, and if the unit is a heat pump, the mode of operation. Compressor Request The Compressor Request screen (Figure 22) provides information regarding the control of compressor staging. Request The request is the amount of compressor capacity that is desired from the unit. The percentage displayed may come from a few different sources. The Compressor Control Request from a third-party device is the most Figure 22: Compressor Request Screen likely source. Other possible sources for the request are Manual Override of the request, a Cooling Coil Safety ramp request, or a request of 100.0% due to an ASHP Defrost Cycle. If the Manual Override is active, an asterisk (*) will appear before the request percentage. Other events affecting the request appear in the Unit Status Line at the bottom of the screen. Capacity Capacity refers to the current compressor operating capacity expressed as a percentage. Each compressor running adds to the capacity percentage. The total number of compressors in the unit determines how much each compressor adds when operating at full load. A Digital Scroll Compressor s (DSC) capacity is figured based on the number of compressors and the load on the DSC (i.e. If the DSC is operating at 50.0% and the unit has 2 compressors, the capacity displayed is 25.0% with only the DSC on). Page 22

24 Clg Coil Temp The current DX Cooling Coil Temperature is displayed on this screen for a quick reference of the air temperature leaving the DX Coil. Delay The delay displayed is an active delay between compressors staging. The Cooling Add and Sub Delays or Heating Add and Sub Delays are utilized to decide when compressor staging can occur along with the request for compressors. A delay of zero (0) seconds indicates that a compressor may be turned on or off as needed per the compressor request. Ref Circuit Information Information regarding the refrigerant circuit(s) appears on the next series of screens. Which and how many screens appear is determined by the number of compressors installed and the type of condenser pressure control installed in the unit. Figure 23 and Figure 24 reflect the information screens when Active Head Pressure Control (AHPC) is installed. Figure 25 reflects the Compressor Commands when standard Head Pressure Control (HPC) is installed. Comp (x) The numbers of the compressor(s) installed in each refrigerant circuit appear with operational information for each compressor. The status of the compressor (Off, On, or Dly) appears next to the compressor number; Off is displayed when the compressor is requested to be off, On is displayed when the compressor is requested to run, or Dly is displayed when the compressor is requested to run but is waiting for the WSHP water valve to open. Next to the status, a timer that displays the minimum time on or off appears if the timer is greater than zero (0) seconds. For the Digital Scroll compressor, the percent of the DSC requested is shown. This is a VDC output to the DSC control board. Dsch Press When AHPC is installed in the unit, the refrigerant transducer reading for each circuit is displayed. The pressure shown is the Discharge Pressure of the circuit. If the unit is a heat pump and heating control is enabled, the pressure shown is the Suction Pressure. Figure 23: Circuit A Information Figure 24: Circuit B Information Figure 25: Comp Commands Standard HPC Sat Dsch Temp The Saturated Discharge Temperature (SDT) is calculated by converting the refrigerant pressure to a temperature. If the unit is a heat pump and heating control is enabled, the temperature shown is the Saturated Suction Temperature (SST). Page 23

25 Condenser Fan Control The Condenser Fan Control screen displays information for the operation of the outdoor condenser fans. The screen that appears depends on the type of Condenser Pressure Control that is installed in the unit. Depending on the AHPC version, cabinet size, or presence of water valves for a WSHP, different screens (Figure 26 through Figure 28) may be displayed with approximately the same information. Cond Fan VFD Condenser Fan VFD output is displayed as a percent of the drive speed requested. This is a VDC output from the Valent controller to the condenser fan VFD or the water valve actuators in a WSHP. In the case of a 350 unit or a WSHP with more than one compressor, separate outputs are provided for the two circuits. AHPC 1.0 Fan Status AHPC 1.0 consists of one modulating condenser fan with a VFD; all additional condenser fans have fixed speed fan motors. The AHPC 1.0 Condenser Fan Control screen displays the condenser fan status for each fan installed; Off is displayed when the fan is requested to be off, or On is displayed when the fan is requested to run. AHPC 1.0 has up to 4 fan stages depending on the number of fans installed. Act Sat Temp or Temp Active Saturated Temperature is the SDT when cooling or the SST when heating and is compared to the setpoint to determine when the condenser fans cycle on or off. Cond Setpt The current Condenser Setpoint used to compare to the active saturated temperature. The setpoint is selected between the Cooling, Dehumidifying, or Heating Condenser setpoints and is dependent on the current operation of the unit. Press The AHPC 2.0 Condenser Fan Control (Figure 27 and Figure 28) and WSHP Water Valve (Figure 29) screens display the current refrigerant pressure transducer reading. The pressure is discharge pressure when the unit is cooling or suction pressure if the unit is heating. Figure 26: AHPC 1.0 Condenser Fan Control Figure 27: AHPC 2.0 Condenser Fan Control Figure 28: AHPC 2.0 Cond Fan Control 350 Figure 29: WSHP Water Valve - Press Ctrl Ctrl Variables Menu The Control Variables menu allows the user to configure operating conditions of the unit. Setpoints, offsets, timers, safeties, alarms, unit settings, and unit configuration are available within this menu. Use the Up/Down arrow buttons ( / ) to scroll through the options. Press Enter ( ) to select the highlighted menu option. Temp Control The Temperature Control sub-menu allows the user to configure setpoints and timers that are utilized in controlling the unit. The following selections are available to the user by pressing the Up/Down arrow buttons. Press Enter to edit the variable(s) on the screen. Using the Up/Down arrows when editing a variable scrolls through the values available for that variable. Press Enter to save the new value of the variable and go to the next variable or Escape ( ) to revert to the original value. See Appendix F Cutouts and Definitions for ranges and defaults of the control variables. Page 24

26 Mode Switch Delay This delay is a time in seconds that the unit delays before switching from heating mode to cooling mode and vice versa in a heat pump. When the external command from the Cooling/Heating Control Mode field supplied input, a timer is started using this delay value. After the timer has expired, the unit will be enabled in heating or cooling as long as all other conditions have been met. This variable only appears if the unit is a heat pump. Cooling Ambient Lockout The Cooling Ambient Lockout is a temperature setpoint used to determine when the unit is not allowed to cool based on the OAT. When the OAT is less than the Cooling Ambient Lockout, the unit is locked out due to the ambient temperature being too low to provide cooling. Any operating compressors at this time will be turned off. The low ambient condition automatically resets when the temperature reaches the lockout plus 2.0 F. Heating Ambient Lockout The Heating Ambient Lockout is a temperature setpoint used to determine when the unit is not allowed to heat based on the OAT. When the OAT is greater than the Heating Ambient Lockout, the unit is locked out due to the ambient temperature being too high to provide heating. Any operating compressors at this time will be turned off. The low ambient condition automatically resets when the temperature reaches the lockout minus 2.0 F. Refrigeration The Refrigeration menu allows the user to configure setpoints, deadbands, offsets, and timers. The following selections are available to the user by pressing the Up/Down arrow buttons ( / ). Press Enter ( ) to select the highlighted menu option. Press Enter to edit the variable(s) on the screen. Using the Up/Down arrows when editing a variable scrolls through the time or temperatures available for that variable. Press Enter again to save the new value of the variable and go to the next variable or Escape ( ) to revert to the original value. See Appendix F Cutouts and Definitions for ranges and defaults of the control variables. Compressor Control The Compressor Control sub-menu allows the user to configure delays and safeties associated with staging compressors. The following selections are available to the user by pressing the Up/Down arrow buttons. Heating selections appear when the unit is configured as a heat pump. Cooling and Heating Add Delay A time in seconds of a delay that starts when a compressor stages on and has to expire before another compressor is allowed to stage on. Cooling and Heating Sub Delay A time in seconds of a delay that starts when a compressor is called to stage off and has to expire before the compressor is allowed to stage off. After a compressor stages off, the Add Delay counts before a compressor is allowed to start. Minimum On Time The minimum on is a time in seconds of a delay that starts when a compressor starts where that compressor cannot turn off until the timer has expired. The compressor must remain on for that amount of time, except in the event of a fault condition. Minimum Off Time The minimum off is a time in seconds of a delay that starts when the compressor turns off where that compressor cannot restart until the timer has expired. The compressor must remain off for that amount of time. Page 25

27 Cooling Coil Staging Safety The Cooling Coil Staging Safety is a temperature setpoint that is compared to the CLT. When the CLT falls below the setpoint, a Cooling Coil Safety Ramp is utilized to back off of the modulating compressor and prevent any additional compressors from starting. During this time compressors are available to stage off but not on. This safety condition helps prevent the unit from going into a Cooling Coil Low Limit. This condition automatically resets when the CLT rises above setpoint plus 4.0 F. Cooling Coil Low Limit The Cooling Coil Low Limit is a temperature setpoint that is compared to the CLT. When the CLT falls below the Cooling Coil Low Limit for three minutes a Low Cooling Coil Temp lockout occurs. Any operating compressors at this time are turned off. During this time, no compressors are available to stage on regardless of the third party s Compressor Control Request. The Low Limit Safety automatically resets when the CLT rises above the lockout temperature plus 4.0 F for three minutes. Condenser Control The Condenser Control sub-menu allows the user to configure setpoints for controlling the outdoor condenser fan operation. It is only available when AHPC 1.0 or AHPC 2.0 is installed for condenser fan operation. WSHP water valve positioning utilizes the same setpoints. Heating options only appear when the unit is a heat pump. The following selections are available to the user by pressing the Up/Down arrow buttons. Cooling Setpoint The Condenser Pressure Setpoint when the unit is operating in cooling control only. The SDT is compared to this setpoint to operate the outdoor condenser fans (or water valves). When the temperature rises above setpoint, the fan(s) with VFD control or EC motors increase their speed to maintain the temperature setpoint. In the case of water valves, the valve opens when the SDT is above setpoint. Dehumidifying Setpoint The Condenser Pressure Setpoint when the unit is dehumidifying. This setpoint only appears if the unit is equipped with Hot Gas Reheat. The SDT is compared to this setpoint to operate the outdoor condenser fans (or water valves). When the temperature rises above setpoint, the fan(s) with VFD control or EC motors increase their speed to maintain the temperature setpoint. In the case of water valves, the valve opens when the SDT is above setpoint. Clg/Dehum Offset The Cooling/Dehumidification Offset is used when AHPC 1.0 is installed. The Offset is added to the current setpoint to bring the fixed speed fans on. When the SDT is greater than the setpoint plus the offset and the VFD driven fan is at 100.0% the next fan stage is enabled. The ramp for the VFD drive fan then resets to minimum. This continues as long as the temperature is above setpoint plus offset for the mode of operation and additional fan stages are available. Heating Setpoint The Condenser Pressure Setpoint when the unit is operating in heating control. The SST is compared to this setpoint to operate the outdoor condenser fans (or water valves). When the temperature falls below setpoint, the fan(s) with VFD control or EC motors increase their speed to maintain the temperature setpoint. In the case of water valves, the valve opens when the SST is below setpoint. Heating Offset The Heating Offset is used when AHPC 1.0 is installed in an ASHP. The Offset is subtracted from the current setpoint to bring the fixed speed fans on. When the SST is less than the setpoint minus the offset and the VFD driven fan is at 100.0% the next fan stage is enabled. The ramp for the VFD-driven fan then resets to minimum. This continues as long as the temperature is below setpoint minus offset and additional fan stages are available. Page 26

28 Heat Pump Control The Heat Pump Control sub-menu allows the user to configure setpoints for heat pump specific settings. This sub-menu only appears when the unit is configured as a heat pump. The following selections are available to the user by pressing the Up/Down arrow buttons depending on the type of heat pump. Screens only appear for WSHP or ASHP depending on the unit configuration. WSHP Water Valve Cooling On Position The Cooling On Position is the minimum open position of the water valve when a compressor in the circuit is operating and the unit is in cooling control. WSHP Water Valve Heating On Position The Heating On Position is the minimum open position of the water valve when a compressor in the circuit is operating and the unit is in heating control. WSHP Water Valve Off Position The Off Position is the open position of the water valve, expressed as a percentage, when all compressors in the circuit are off. The same percentage is used for cooling or heating control. ASHP Cancel Defrost The ASHP Cancel Defrost is a temperature used when the unit is in a defrost cycle. When the SST rises above the Cancel Defrost setpoint, the defrost cycle terminates. Please see section on ASHP Defrost Cycle for further information. ASHP Max Defrost Time The Max Defrost Time refers to the maximum number of minutes that a unit can operate in a defrost cycle without being locked out. If an ASHP remains in defrost for the Max Defrost Time, the unit is locked out. When the unit becomes locked out, heating with the compressor(s) is not available. Please see section on ASHP Defrost Cycle for further information. HP Heating Lockout The HP Heating Lockout affects units with the heat pump option during operation in heating mode. The lockout works differently if the unit is an ASHP or a WSHP. Low Ambient Lockout (ASHP) If the OAT drops below the HP Heating Low Ambient Lockout setpoint when the unit is heating, packaged refrigeration heating is locked out. Any operating compressors are then turned off. The lockout condition automatically resets when the OAT rises above the lockout temperature plus 5.0 F. Low SST Lockout (WSHP) If the SST of a refrigeration circuit drops below the HP Heating Low SST Lockout setpoint when the unit is heating, packaged refrigeration heating is locked out. Any operating compressors in that circuit are then turned off. The lockout condition automatically resets when the SST rises above the lockout setpoint plus 3.0 F. If both refrigerant circuits are locked out on Low SST, the unit is in a Heat Pump Heating Lockout. Page 27

29 Advanced The Advanced menu allows the user to configure setpoints, PID loops, and timers along with the ability to view unit configuration and information. This menu has password options to view or adjust some of the available information. The following selections are available to the user by pressing the Up/Down arrow buttons ( / ). Press Enter ( ) to select the highlighted menu option. Press Enter to edit the variable(s) on the screen. Use the Up/Down arrows to scroll through the time or temperatures available for that variable. Press Enter again to save the new value of the variable and go to the next variable or Escape ( ) to leave edit mode. See Appendix F Cutouts and Definitions for ranges and defaults of the control variables. Login On the Advanced Menu login screen (Figure 30), enter a password for either a Service or Factory Level access. Without entering a password, most options are available at a read-only access. Enter 0000 to logout. Otherwise, the access level remains active for the Login Duration (10 min, adj). Figure 30: Advanced Menu login Adv. Setpoints The Advanced Setpoints sub-menu allows the Service or Factory level user to tune PID loops and configure timers. This sub-menu does have read-only access. The following selections are available to the user by pressing the Up/Down arrow buttons. Cooling PID Tuning The Cooling PID portion of Controls Lite affects a secondary PID loop used only for the Cooling Coil Staging Safety to back the compressors off when the CLT is low. When the unit is not in the Cooling Coil Staging Safety, the compressor staging follows the Compressor Control Request from the BMS. For P Gain and I Time adjustability, please see below. Cond Press PID Tuning The Condenser Pressure PID variables affect the Condenser Pressure ramps that control the speed of the VFD or EC driven condenser fans (outdoor coil fans). If the unit is a WSHP, the WSHP Water Valve positions are controlled by the Condenser Pressure ramps. If Standard Condensing Fans are installed, this screen will not appear. The Condenser Pressure PID increases and decreases the output to the fans or water valves to maintain the Condenser Pressure Setpoint for the current mode of operation; Cooling, Dehumidifying, or Heating. For P Gain and I Time adjustability, please see below. P Gain and I Time P Gain Proportional Gain The P Gain is the main control of the PID output. P Gain does not have a unit of measure. The error is proportional to the amount of the output. A smaller P Gain results in operation that is relatively more stable. If the P Gain is the only active action, the Error (Active Setpoint Active Input) is multiplied by the Proportional Gain (Kp) to get the output of the ramp. (Output = Kp*[Setpt Input]) If the Error does not continue to change with P only control, the output remains the same. To increase the speed of the output, increase the P Gain, but only enough to where the loop is not unstable. If the loop becomes unstable, decrease the P Gain. Page 28

30 I Time Integral Time The I Time is a time in seconds that it takes for one full repeat of the P Term output. Adding integral action to the PID output allows the ramp to continue increasing or decreasing. If the amount of the Error is not changing, the output to the ramp continues to increase or decrease by P Term over a period of I Time. To decrease the speed of the output, increase the I Time. To increase the speed of the output, decrease the I Time. HGRH Purge Mode HGRH Purge is utilized to open the HGRH valve to draw any excess refrigerant oil out of the HGRH coil. The HGRH valve is forced to 100.0% when a compressor is operating in the reheat circuit and the valve has not been at least 80.0% open for two consecutive minutes within the last hour. HGRH Purge Interval The HGRH Purge Interval is the time, in minutes, between HGRH Purges. HGRH Purge Duration The HGRH Purge Duration is the time, in minutes, that determines the length of the HGRH Purge. Digital Scroll Minimum Signal The Digital Scroll Minimum Modulating Signal is the lowest percent of compressor capacity where a Digital Scroll Compressor can operate. Login Duration The Login Duration is a time, in minutes, that determines how long the login password remains in effect for the Advanced menu. Alarm Management The Alarm Management sub-menu allows the Service or Factory level user to configure setpoints and timers associated with alarm conditions. This sub-menu does have read-only access. The following selections are available to the user by pressing the Up/Down arrow buttons. Alarm Digital Output The Alarm Digital Output affects the signal to the BMS when an alarm occurs. If the Type is configured to ANY ALARM, then the alarm output is activated when any alarm occurs. If the Type is configured to SHUTDOWN, only alarms that shutdown the unit activate the alarm output. High Saturated Discharge The High Saturated Discharge setpoint is compared to the SDT. If the SDT exceeds the setpoint, the fixed compressor(s) in the circuit are turned off while the modulating compressor backs off to minimum. If the SDT falls below setpoint minus 5.0 F, the condition resets. Low Saturated Suction The Low Saturated Suction Temperature alarm is only available in WSHP units. The Low Saturated Suction setpoint is compared to the SST. If the SST falls below the setpoint for 45 seconds or more, the fixed compressor(s) in the circuit are turned off while the modulating compressor backs off to minimum. If the SST rises above the setpoint plus 5.0 F, the condition resets. A counter is incremented for every 30 seconds that the SST condition remains true and does not reach the reset point. When the counter reaches three within an hour, the circuit is locked out for an hour before automatically resetting or can be manually reset at the Valent controller. Page 29

31 Fan Alarm Delay The Fan Alarm Delay is a time in seconds that proof of airflow is not available when compressor operation is requested and the controls are enabled. In Controls Lite, this is used only with the Supply Air Fan proof of flow. Unit Save/Restore The Unit Save/Restore sub-menu allows the Service or Factory level user to save current user configuration and settings or restore previously saved user configuration and settings. This sub-menu does not have read-only access. The following selections are available to the user by pressing the Up/Down arrow buttons. Save Unit Settings Select the location to save the settings. USB Drive or NAND memory (internal) are available. If USB USB-A Drive is selected, a USB flash drive (formatted as a FAT32 file system) is inserted into the USB-A port on USB-B the controller before selecting the Save box. Refer Figure 31: Carel c.pco USB ports to Figure 31 for location of USB ports. If the drive is missing, the status line on the screen will display Error found. The file is saved as User_Backup.txt on the controller or on the USB drive. This file can be used to load the user configuration and settings after a new program installation or to get back to a particular configuration. These settings are not necessarily the factory defaults for the unit. To get to the factory default configuration for the unit, a System Application Wipe Retain would have to be performed. Restore USB Settings The Restore USB Settings screen (Figure 32) provides instructions on how to restore the unit to the user configuration and settings when the User_Backup.txt file was saved to a USB flash drive. The name of the file has to be User_Backup.txt for the controller to access the file. Power off the controller and insert the USB flash drive into the USB-A port on the controller. Power up the controller. When the controller locates the file on the USB flash drive, the values stored in the file are read into the controller s memory. Figure 32: Restore USB Settings Restore NAND Settings The Restore NAND Settings screen (Figure 33) is used to load the User_Backup.txt file that was previous stored on the controller s internal memory. The unit must first be disabled to restore from the internal memory. The Last Save Time shows the time and date of the User_Backup.txt that the controller will restore. Figure 33: Restore NAND Memory Unit Config The Unit Configuration sub-menu allows the Factory level user to enable/disable certain configuration options and view the Controls Model Number. This sub-menu does have read-only access. The following selections are available to the user by pressing the Up/Down arrow buttons. Cooling Enable Cooling Enable selection box () allows a Factory Level user to disable/enable the cooling portion of the unit. This defaults to enabled (). Disabling the cooling will display No Cooling Available on the Unit Status Line if controls are enabled in cooling mode. Page 30

32 Heating Enable Heating Enable selection box () allows a Factory Level user to disable/enable the heating portion of the unit. This defaults to enabled (). Disabling the heating will display No Heating Available on the Unit Status Line if controls are enabled in heating mode. ASHP Defrost En ASHP Defrost Enable selection box () allows a Factory Level user to disable/enable the defrost cycle in an ASHP. Disabling the defrost cycle is not suggested in locations with ambient conditions below 45.0 F. Controls Model Number The Controls Model Number is a string of numbers produced by Valent that indicates what options are installed in the unit. Four screens break the number into individual digits and display the digit definitions and which options are installed. Unit Settings The Unit Settings sub-menu includes options that need to be adjusted at the installation. Included are settings for operation that should only need to be set at unit startup. This sub-menu does not need a password to configure the included information. The following selections are available to the user by pressing the Up/Down arrow buttons. Unit IP Address The Unit IP Address is used to connect to the Valent c.pco Onboard Web UI. The IP Address scheme should match that of the network where the unit controller is communicating. DHCP is available on the controller, but is Off as the default setting. The default IP Address information is: DHCP: (Off) IP: Mask (Subnet): GW (Gateway): DNS: Upon changing any information regarding the Unit IP Address, select the Save Changes box () and cycle power to the controller for the changes to take effect. Unit of Measure The Unit of Measure screen allows the user to select what unit of measure temperatures, pressures, and enthalpy display at the user interfaces. Unit of Measure and Enthalpy are configured separately. Conversion Zone Unit of Measure selected by a conversion zone and includes temperature, pressure, and enthalpy conversions. Changing the conversion screen forces the controller into a reboot to set the new Unit of Measure. The following conversion zones are available: USA The USA conversion zone displays temperatures in degrees Fahrenheit ( F) and pressures in pounds per square inch (psi), and enthalpy in British Thermal Units (btu). Canada The Canada conversion zone displays temperatures in degrees Celsius ( C), pressures in psi, and enthalpy in btu. SI The International System (SI) conversion zone displays temperatures in degrees Celsius ( C), pressures in bars (bar), and enthalpy in kilojoules (kj). Page 31

33 Unit Altitude The Unit Altitude is used to calculate atmospheric pressure at the location of the unit. This is in turn used to calculate the Enthalpy at current operating conditions. Altitude is in feet and is not converted by the conversion zone. Time and Date The Time, Date, and Timezone need to be set appropriately for the location of the unit. The Time is displayed in 12 hour time and AM or PM. The Date is displayed in Month/Day/Year format. The Timezone is selected by selecting the area of the world the unit is in and then the timezone within that area. Having these set properly for the unit location aids in having more useful information available for alarm history, unit power loss information, and trending. BMS Request Signals BMS Request Signal types can be changed for the Compressor Control Request or the Hot Gas Reheat Request. Three types of signals can be used for these inputs to the Valent controller VDC, VDC, or 4-20 ma are available for the third-party device requests. Service Info The Service Information sub-menu allows the user to view information regarding the control board and run hours and starts for the compressors. Service or Factory level access is necessary to reset the compressor run hours and starts. The following selections are available to the user by pressing the Up/Down arrow buttons. Unit Information The data on the Unit Information Screen (Figure 34) is uploaded with the application program. The job name displays up to 22 characters of Valent s job name. The Sales Order Number (SO#) and Line Item are Valent s system for information regarding the unit. The DRC Date is the date the application program and unit configuration was loaded into the Valent controller and the panel tested. The Program Version is the version of the Valent application program loaded into the controller and the date the application program was released. Blackout Information The Blackout Information screen (Figure 35) displays information regarding power loss to the Valent controller. The controller creates a history of power losses, the time and date of the power loss, and how long the controller remained offline. The most recent power loss is displayed first. To view the older blackout records, press Enter ( ) and use the Up/Down arrows ( / ) to scroll through the Blackout History. Press Escape ( ) to get out of the records. c.pco Board Info The c.pco Board Information screen (Figure 36) displays the program cycle time in milliseconds, the number of program cycles per second, the internal temperature of the controller, and the voltage of the power to the controller. This information all comes from the operating system of the controller. Figure 34: Unit Information Screen Figure 35: Blackout Historical Information Figure 36: c.pco Board Information Page 32

34 Compressor Info Compressor Info (Figure 37) includes the number of compressor run hours and starts. The run hours are calculated while the compressor is operating. Compressor starts are incremented every time the compressor starts. Run hours and starts are maintained when a power loss occurs. Both are individually resettable to the Service or Factory level user. Entering to the Reset selection takes the user to a new screen for that compressor and allows the reset of the run hours and/or starts. Figure 37: Compressor Information Export Log Files The Valent controller has two trend logs that contain information obtained from the unit s operation. The logs contain predetermined information that is stored once a minute for seven days. Select either USB Drive or NAND Memory to save the Figure 38: Export Log Files exported log files (Figure 38). The log files are.csv files that can be opened with Microsoft Excel or Notepad. If USB Drive is selected, a USB flash drive is inserted into the USB-A port (see Figure 30 for location of port) on the controller before selecting the Save box. If the drive is missing, the status line on the screen will display Error found. Exporting the Log Files to the NAND memory of the controller requires the user to either FTP to the controller or connect the controller to the computer as an external drive using a USB-A to USB-B cable. For more information on connecting to the controller via FTP or USB, refer to Appendix J Connecting to the Controller. EOL Test The EOL Test sub-menu allows the Factory level user to enable/disable the Modbus Registry for testing the control panel and unit. This sub-menu does not have read-only access. Press Enter to go to the selection box to Enable EOLT. After enabling the controller for the End of Line Test, the power needs to be cycled to the controller. The EOL Test Modbus is active until the power is cycled again. Manual Overrides The Manual Override sub-menu allows the Factory level user to temporarily override portions of the logic. This sub-menu does not have read-only access. The following selections are available to the user by pressing the Up/Down arrow buttons. Main Manual Override Enable The Manual Override Mode screen (Figure 39) is the Main Override Enable for all overrides. This must be enabled in order for anything else to be enabled. The Override Duration is the amount of time in minutes that the Main Override Enable stays active. When the duration time is over, the Main Override and all other enabled overrides are disabled. When the Main Override is enabled, Overrides Active appears in the Unit Status Line. The Time Remaining and the Status for the Main Override Enable are displayed at the bottom of the screen. The following inputs and outputs can be overridden from the Valent controller. Figure 39: Main Override Page 33

35 BMS Comp Ctrl Request The Compressor Control Request sent to the Valent controller from the third-party device can be overridden temporarily by enabling the override and providing a value from 0.0 to 100.0% for compressor operation. The value currently displayed, when the override is off, is the current Compressor Control Request from the third-party device. When the Compressor Control Request is being overridden, an asterisk (*) appears in front of the Request signal displayed on the Compressor Request status screen. BMS HGRH Request The Hot Gas Reheat Request sent to the Valent controller from the third-party device can be overridden temporarily by enabling the override and providing an open position for the HGRH valve. The value currently displayed, when the override is off, is the current HGRH Request from the third-party device. When the HGRH Request is being overridden, an asterisk (*) appears in front of the HGRH Valve Req signal displayed on the Hot Gas Reheat Request status screen. Comp On/Off Request Compressor operation can be overridden temporarily by enabling the override and turning the compressor on or off. The compressor status displayed, when the override is off, is the current operating status of each compressor. Modulating Comp Signal The Modulating Compressor Signal for the Digital Scroll Compressor can be overridden temporarily by enabling the override and setting the value to the percentage of the desired capacity of the Digital Scroll Compressor. The value displayed, when the override is off, is the current operating capacity of the compressor. The DSC must be on for the override of the signal to affect the compressor speed. When the Modulating Comp Signal is being overridden, an asterisk (*) appears in front of the Digital Scroll Compressor capacity displayed on the Refrigerant Circuit status screen. Cond Press Control/WSHP Valve Control The Condenser Pressure Control can be overridden temporarily when active head pressure control (AHPC 1.0 or AHPC 2.0) is on the unit or the unit is a WSHP. The compressors must be overridden off for the condenser fans or water valves to be overridden. Enable the override and set the value to the percent of the condenser fan or open position of the water valve(s). If AHPC 1.0 is installed, the additional fan stages can also be overridden by turning the stages on or off. The values displayed, when the override is off, are the current positions and stages. When the Condenser Pressure Control is being overridden, an asterisk (*) appears in front of the VFD or valve percent on the status screen. Reversing Valve The position of a heat pump Reversing Valve can be overridden temporarily by enabling the override and changing the valve position to heating or cooling. The position being displayed, when the override is off, is the current position of the reversing valve. When the Reversing Valve position is being overridden, an asterisk (*) appears in front of the heating/cooling control on the status screens. ASHP Defrost Active The Defrost Cycle of an ASHP can be overridden temporarily by enabling the override and activating the defrost cycle. When activating the defrost cycle, the unit reversing valves switch to the cooling position and the compressor request is 100.0% to enable all compressors. The override request for the defrost cycle has a timer associated with it that is two minutes less than the Max Defrost Time. When the timer expires, the Defrost override returns to off. The state of the defrost cycle displayed, when the override is off, is the current state. The override timer in seconds is displayed on the screen when the override is active. When the ASHP Defrost Active is overridden, an asterisk (*) appears in front of the control line on the status screens. Page 34

36 Global Alarm The Global Alarm output can be overridden temporarily by enabling the override and changing the state of the output to alarm. This override is the alarm signal output to a third-party device. It does not affect the alarm button LED of the Valent controller. The state of the Global Alarm output displayed, when the override is off, is the current state of the output. Alarm Menu The Alarm menu allows the user to view and reset Active Alarms, view Alarm History, clear the Alarm History, and Export Alarm Log. The following selections are available to the user by pressing the Up/Down arrow buttons ( / ). Press Enter ( ) to select the highlighted menu option. Active Alarms The Active Alarms screen allows the user to view any active alarms in the unit. Pressing the Alarm ( ) button is another way to view the Active Alarms. Each alarm screen contains the alarm that occurred, the alarm number, and the time and date of the alarm. Use the Up/Down arrow buttons to scroll through the Active Alarms. If no alarms are active, the screen displays NO ALARMS and provides a shortcut to the Alarm History by pressing the Enter button. Resetting Active Alarms A screen appears after the last active alarm to reset all alarms or go to the Alarm History. Pressing and holding the Alarm button for three seconds resets all active alarms that are capable of being manually reset. Pressing the Enter button from this screen takes the user to the Alarm History. Alarms that can be manually reset can also be individually reset by pressing and holding the Alarm button for three seconds on the Active Alarm screen. Alarm History The Alarm History is a record of all the alarms that have occurred. Each alarm record includes the alarm, the alarm number, the time and date of the alarm event (start/stop) and any additional information that may have been recorded for the alarm. Each alarm has two events when the alarm occurred (start) and when the alarm was reset (stop) whether manually or automatically. The Alarm History holds up to 99 records. Clear History The Clear History selection allows the user to clear all information held in the Alarm History. Export Alarms The Export Alarms selection allows the user to export the Alarm Logs from the Alarm History. Select either USB Drive or NAND Memory to save the exported Alarm Log file. The file is called Alarm_Log.csv and can be opened with Microsoft Excel or Notepad. If USB Drive is selected, a USB flash drive is inserted into the USB-A port (See Figure 30) on the controller before selecting the Save box. If the drive is missing, the status line on the screen will display Error found. Exporting the Log Files to the internal memory of the controller requires the user to either FTP to the controller or connect the controller to the computer as an external drive using a USB-A to USB-B cable. For more information on connecting to the controller via FTP or USB, refer to Appendix J Connecting to the Controller. Page 35

37 Alarms and Safeties Alarms and Safeties are broken into three categories; Digital Inputs and Sensor Failures, Non-Adjustable Alarms and Safeties, and Adjustable Alarms and Safeties. Refer to Appendix F Cutouts and Definitions for cutouts, ranges, and defaults for the different types of alarms and safeties. Digital Inputs and Sensor Failures Digital Inputs and Sensor failures occur without any adjustable setting from the user. Either the controller is receiving an expected signal from the input or it is not. Supply Fan Alarm The Supply Fan Status is required to provide a closed status (24 VAC) within a Fan Alarm Delay (60 seconds, adj.) of the unit being enabled and compressor operation requested. A Supply Fan Alarm occurs whenever the supply fan is off for more than the Fan Alarm Delay when the unit is enabled and compressors requested. This alarm is an auto resetting alarm. If compressors are running when the supply fan status opens (0 VAC), the compressor operation is stopped. When status of supply airflow is regained, the controls are enabled for cooling or heating operation after ten seconds. Low Press Sw Alm A/B The Low Pressure Switch Alarm is generated from a mechanical pressure switch located on the low side of each refrigerant circuit. The switch for the air-cooled condensing units opens if the refrigerant pressure falls below 75 psi (+/-5 psi) and closes when the pressure rises above 95 psi (+/- 7 psi). The switch for the heat pumps opens when the pressure falls below 25 psi (+/- 5 psi) and closes when the pressure rises above 50 psi (+/- 5 psi). When the low pressure switch opens, the compressors in that circuit are not available to operate. Any operating compressors in that circuit will be turned off. This alarm resets automatically unless the alarm occurs three times in one hour in which it becomes a manual reset. High Press Sw Alm A/B The High Pressure Switch Alarm is generated from a mechanical pressure switch located on the high side of each refrigerant circuit. The switch opens when the refrigerant pressure rises above 610 psi (+/- 25 psi). This switch has a manual reset button on the switch to reset (close) the switch. When the high pressure switch opens, the compressors in that circuit are not available to operate. Any operating compressors in that circuit will be turned off when the switch opens. After the pressure has dropped and the switch has been reset, the controller will automatically reset the fault and the compressors in that circuit are available to restart. Ref Press Trans Alm A/B The Refrigerant Pressure Transducer is a VDC input for each refrigerant circuit when AHPC 1.0 or 2.0 is installed. The transducer reading outside of the range 25.0 to psi for more than five seconds results in a Refrigerant Transducer Alarm. Any operating compressors in that circuit will be turned off at the time of the failure. The controller automatically resets the fault when the transducer reads within the valid range. This alarm resets automatically unless the alarm occurs three times in one hour in which it becomes a manual reset. Shutdown Input Alm The Shutdown Input is used by the third-party device to send any external alarms or conditions to the unit when the unit is to be disabled. The input is closed (24 VAC) for the unit to operate. If the input is not utilized in the field, a jumper is installed to close the input. An open input (0 VAC) results in the unit being disabled. This alarm is automatically reset when the input is closed. Page 36

38 Clg Coil LAT Sens Alm The Cooling Coil Leaving Air Temperature Sensor Alarm is controlled by the c.pco operating system. When the sensor is open or shorted, the system issues a probe error. This alarm is a manual reset after the probe error has been addressed. Any operating compressors in the unit will be turned off when the alarm occurs. The compressors remain unavailable until the probe error has cleared and the alarm has been manually reset. OA Temp Sens Alm The Outdoor Air Temperature Sensor Alarm is controlled by the c.pco operating system. When the sensor is open or shorted, the system issues a probe error. This alarm is an auto reset. Any operating compressors in the unit will be turned off when the alarm occurs. The compressors remain unavailable until the probe error has cleared and automatically reset. OA Humidity Sens Alm The Outdoor Air Humidity Sensor Alarm occurs when the sensor reads less than 1.0% or more than 99.0% for five seconds. Any operating compressors in that circuit will be turned off at the time of the alarm. The controller automatically resets the alarm when the sensor reads within the valid range. Non-Adjustable Alarms and Safeties The Non-Adjustable Alarms and Safeties have a set value for the minimum or maximum limit where the unit or certain parts of the unit are not available. Defrost 3 Strike An Air-Source Heat Pump s ability to heat using the packaged refrigeration of the unit is disabled and all operating compressors are turned off when any of the following conditions occur: The ASHP has been in Defrost Mode for the ASHP Defrost Max Time; OR The ASHP goes into Defrost Mode three times in an hour. The Defrost 3 Strike is automatically reset when any one of the following occurs: The Defrost 3 Strike is active for one hour; OR The OAT is 5.0 F greater than the OAT recorded when heating was disabled; OR The OAH is 20.0% greater than the OAH recorded when heating was disabled. High T-Memory Writes The High T-Memory Writes is controlled by the c.pco operating system. This warning indicates that the last sample of the application demonstrated 200 writes to the retained memory (permanent) within a four-minute period. This warning is logged as part of the Alarm History. The warning is automatically reset when a sample is lower than 200 writes. Retain Mem Write Error The Retained Memory Write Error is controlled by the c.pco operating system. This error is a warning that the application software is writing to retained variables in the application over 200 times within a four minute period. This error is logged as part of the Alarm History. Page 37

39 Adjustable Alarms and Safeties The Adjustable Alarms and Safeties allow the user to adjust when an alarm or safety may occur. There are set ranges that the user has to stay within for each variable. See the Unit Cutouts and Definitions Table in Appendix F for cutouts, ranges, and defaults for the different types of alarms and safeties. Cooling Ambient Lockout The Cooling Ambient Lockout setpoint is compared to the OAT. When the OAT is less than the Cooling Ambient Lockout and the unit is in cooling mode, the unit is locked out because the ambient temperature is too low to allow the unit to provide cooling. Any operating compressors at this time will turn off. The cooling low ambient condition automatically resets when the OAT rises above the lockout temperature plus 2.0 F. The compressors are available to resume operation after the auto reset occurs. Heating Ambient Lockout The Heating Ambient Lockout setpoint is compared to the OAT. When the OAT is greater than the Heating Ambient Lockout and the unit is in heating mode, the unit is locked out because the ambient temperature is too high to allow the unit to provide heating. Any operating compressors at this time will turn off. The high ambient condition automatically resets when the OAT falls below the lockout temperature minus 2.0 F. The compressors are available to resume operation after the auto reset occurs. HP Heating Lockout The HP Heating Lockout affects only ASHPs and WSHPs during operation in heating mode. Low Ambient Lockout (ASHP) If the unit is configured as an ASHP, the HP Heating Low Ambient Lockout setpoint is compared to the OAT. When the OAT is less than the HP Heating Low Ambient Lockout and the unit is in heating mode, packaged refrigeration heating is locked out because the ambient temperature is too low to allow the unit to provide heating with compressor operation. Any operating compressors are then turned off. The low ambient condition automatically resets when the OAT rises above the lockout temperature plus 5.0 F. Low SST Lockout (WSHP) If the unit is configured as a WSHP, the HP Heating Low SST Lockout setpoint is compared to the SST of each refrigeration circuit. When the SST of a refrigeration circuit is less than the HP Heating Low SST Lockout and the unit is in heating mode, packaged refrigeration heating in that circuit is locked out. Any operating compressors in that circuit are then turned off. The low SST condition automatically resets when the SST rises above the lockout temperature plus 3.0 F. The compressors of the circuit are available to resume operation after the condition is reset. The lockout in the WSHP is a freeze protection lockout. When both circuits are locked out, the unit is not available to heat with the packaged refrigeration. Cooling Coil Staging Safety When the CLT falls below the Cooling Coil Staging Safety setpoint, a Cooling Coil Safety Ramp is used to back off the modulating compressor and keep any additional compressors from starting. During this time compressors are available to stage off but not on. This safety condition helps prevent the unit from going into a Cooling Coil Low Limit. This condition automatically resets when the CLT rises above setpoint plus 4.0 F. Low Clg Coil LA Temp When the CLT falls below the Cooling Coil Low Limit for three minutes, a Low Cooling Coil Temp lockout occurs. Any operating compressors at this time are turned off. During this time, no compressors are available to stage on regardless of the third party s Compressor Control Request. The Low Clg Coil LA Temp automatically resets when the CLT rises above the lockout temperature plus 4.0 F for three minutes. This alarm is logged as part of the Alarm History. Page 38

40 High Sat Disch Temp A/B The SDT is converted from the discharge pressure and then compared to the setpoint. If the SDT exceeds the setpoint, the fixed compressor(s) in the circuit are turned off while the modulating compressor backs off to minimum. If the SDT falls below setpoint minus 5.0 F, the condition resets. Low Sat Suct Temp A/B The SST is converted from the suction pressure and then compared to the setpoint. If the SST falls below the setpoint for 45 seconds or more, the fixed compressor(s) in the circuit are turned off while the modulating compressor backs off to minimum. If the SST rises above the setpoint plus 5.0 F, the condition resets. A counter is incremented for every 30 seconds that the SST condition remains true and does not reach the reset point. When the counter reaches three within an hour, the circuit is locked out for an hour or can be manually reset. The Low Sat Suct Temp is only available in WSHP units. Page 39

41 IOM Appendices Page 40

42 Appendix A Terminal Strip Wiring TB5 Third-Party Wiring The following table/diagram is the terminal strip wiring of TB5 for Controls Lite. This terminal board is the wiring point for the third-party device. indicates that 24VAC power is supplied by a third party. indicates that 10.0 VDC power is + supplied by a third party. Please refer to the unit s wiring diagram to properly interface the third-party inputs and outputs with the Valent terminal strip. 5 Page 41 POWER BY 3 RD PARTY TERMINAL TERMINAL 3 DESCRIPTION RD PARTY # TYPE I/O VAC Supply Fan Start DO VAC Exhaust Fan Start DO VAC Pre-Heater Enable DO 103C Common Common VAC Gas Furnace Htg Stage 1 Enable DO VAC Gas Furnace Htg Stage 2 Enable DO VAC Gas Furnace Htg Stage 3 Enable DO 106C Common Common 107 Energy Recovery Wheel Start DO 107C Common Common 201 Energy Recovery Status** DI 202 OA/RA Damper End Switch DI 202C Common Common VAC Power 24 VAC VDC OA/RA Damper Position Input AO VDC Supply Fan Speed Input AO VDC Exhaust Fan Speed Input AO 304C Common Common VDC Heating Capacity Input AO VDC Aux Electric Heat Capacity Input AO VDC Energy Recovery Capacity Input AO 307C Common Common VDC* Compressor Control Request AO VDC* Hot Gas Reheat Request AO 309C Common Common VAC Shutdown(0) Input DO VAC Cooling(0)/Heating(1) Control Mode *** DO 402P 24 VAC Power 24 VAC VAC Global Alarm Output (Refrigeration Alarms) DI VAC ASHP Defrost Active *** DI 404C Common Common 901 Filter Pressure Switch** DI 902 Low Temperature Protection Output** DI 902C Common Common VAC Power 24 VAC VDC Supply Airflow Measuring Station** AI VDC Exhaust Airflow Measuring Station** AI VDC Outdoor Airflow Measuring Station** AI 906C Common Common * Request Signals can be selected via application software to be VDC or 4-20 ma ** Optional Devices installed *** Heat Pumps Only Indicates third-party supplied 24VAC power Indicates third-party supplied 10VDC power +

43 Appendix B Controls Lite Furnace Limitations Heatco Gas Furnace Capacity When modulating the gas furnace heating capacity, Valent recommends a maximum temperature rise and a minimum airflow for constant volume and variable air volume units. The following criteria must be met when controlling the staging/modulation of the gas furnaces in order to prevent improper combustion and damage to the unit. 1. All gas furnaces need to be limited to the maximum temperature rise; 100 F for bottom discharge furnaces and 60 F for side discharge furnaces. 2. Locate the unit casing size, the correct furnace MBH, the furnace discharge direction and whether the unit is constant or variable for the minimum airflow in CFM. UNIT CASING SIZE FURNACE MBH MAX TEMP RISE F BOTTOM DISCHARGE CONSTANT VOLUME MIN AIRFLOW CFM VARIABLE AIR VOLUME MIN AIRFLOW CFM MAX TEMP RISE F SIDE DISCHARGE CONSTANT VOLUME MIN AIRFLOW CFM VARIABLE AIR VOLUME MIN AIRFLOW CFM , , ,852 1, ,852 1, ,469 1, ,852 1, ,469 1, ,315 1, ,086 2, ,788 1, ,704 2, ,241 2, ,321 2, ,704 2, ,938 3, ,963 1, ,938 3, ,704 2, ,173 4, ,444 2, ,407 4, ,186 3, ,642 5, ,926 3, ,876 6, ,938 3, ,407 4, ,174 4, ,258 6, ,407 4, ,112 7, ,643 5, ,963 8, ,876 6, ,814 9,777 NOTE: Information included in the table above for constant volume airflow obtained from Heatco website on 9/01/2015. All information should be verified with the nameplate installed on the furnace. The variable volume airflow is calculated from the constant volume. Please refer to the unit s submittal information for the exact gas furnace performance data. Page 42

44 Appendix C Compressor Staging Digital Scroll Units The following tables show the staging sequence based on the number of compressors in a unit for units with a Digital Scroll compressor (DSC) and up to three fixed scroll compressors, and whether the unit is in dehumidification mode. Listed below are the analog input values where each compressor stages on or off based on the Compressor Control Request. In a heat pump, the cooling and heating requests for compressor operation utilize the same Compressor Control Request analog input. One Compressor Unit with Digital Scroll COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma On 5.0% 0.50 VDC 2.40 VDC 4.80 ma 1 1(DSC/HGRH) Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma Two Compressor Unit with Digital Scroll COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 2 1 (DSC) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 1 2 (HGRH) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma Two Compressor Unit with Digital Scroll (when Dehumidifying) COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 2 2 (DSC) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma Four Compressor Unit with Digital Scroll COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 3 1 (DSC) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 1 2 (HGRH) On 30.0% 3.00 VDC 4.40 VDC 8.80 ma Off 20.0% 2.00 VDC 3.60 VDC 7.20 ma 2 3 (HGRH) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 4 4 On 80.0% 8.00 VDC 8.40 VDC ma Off 70.0% 7.00 VDC 7.60 VDC ma Four Compressor Unit with Digital Scroll (when Dehumidifying) COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 2 2 (HGRH) On 30.0% 3.00 VDC 4.40 VDC 8.80 ma Off 20.0% 2.00 VDC 3.60 VDC 7.20 ma 3 3 (DSC) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 4 4 On 80.0% 8.00 VDC 8.40 VDC ma Off 70.0% 7.00 VDC 7.60 VDC ma NOTE: HGRH indicates that the compressor is part of the circuit that is responsible for dehumidification. Page 43

45 Non-Digital Scroll Units The following tables show the staging sequence based on the number of compressors in a unit for non-digital scroll units with fixed speed compressors. One Compressor Unit COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma On 5.0% 0.50 VDC 2.40 VDC 4.80 ma 1 1 (HGRH) Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma Two Compressor Unit COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 2 2 On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma Two Compressor Unit (when Dehumidifying) COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 2 2 On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma Four Compressor Unit COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 3 2 On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 2 3 (HGRH) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 4 4 On 80.0% 8.00 VDC 8.40 VDC ma Off 70.0% 7.00 VDC 7.60 VDC ma Four Compressor Unit (when Dehumidifying) COMP # STAGE ON/OFF REQUEST % VDC VDC 4-20 ma 1 1 (HGRH) On 5.0% 0.50 VDC 2.40 VDC 4.80 ma Off 2.5% 0.25 VDC 2.20 VDC 4.40 ma 2 2 (HGRH) On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 3 3 On 55.0% 5.50 VDC 6.40 VDC ma Off 45.0% 4.50 VDC 5.60 VDC ma 4 4 On 80.0% 8.00 VDC 8.40 VDC ma Off 70.0% 7.00 VDC 7.60 VDC ma NOTE: HGRH indicates that the compressor is part of the circuit that is responsible for dehumidification. Page 44

46 Appendix D Valent Controller I/O The following is the layout of the inputs and outputs of the Valent Controller. Controller Inputs Analog Inputs U1 Refrigerant Pressure Transducer Circuit A VDC 0.0 to psig U2 Refrigerant Pressure Transducer Circuit B VDC 0.0 to psig U3 U4 Cooling Coil Leaving Air Temperature NTC U5 Outdoor Air Temperature NTC U6 Outdoor Air Humidity VDC % U7 Compressor Control Request BMS Signal VDC % U8 Hot Gas Reheat Request BMS Signal VDC % Digital Inputs ID1 Supply Fan Status Closed = Fan On ID2 High Pressure Switch Circuit A Closed = Normal ID3 Low Pressure Switch Circuit A Closed = Normal ID4 ID5 ID6 Shutdown Input BMS Input Closed = Run ID7 High Pressure Switch Circuit B 4 Closed = Normal ID8 Low Pressure Switch Circuit B 4 Closed = Normal ID9 ID10 ID11 ID12 ID13H ID13 ID14 Heating/Cooling Control Mode BMS Input 5 Closed = Heating ID14H 1 Units with Active Head Pressure Control 2 Units with AHPC and more than 1 Compressor 3 User Selectable Input Type: VDC, VDC, or 4-20 ma 4 Units with more than 1 Compressor 5 Heat Pump Units Only 6 WSHP Units Only Casing with AHPC 2.0 Only 8 WSHP Units with more than 1 Compressor 9 Units with 4 Compressors 10 When Defrost is Active, an auxiliary heat source should be enabled. Page 45

47 Controller Outputs Analog Outputs Y1 Digital Scroll Compressor Output VDC % Y2 Condenser Fan VFD Output (Circ A) 1 or Water Valve Output Circ A VDC % Y3 Hot Gas Reheat Valve Output VDC % Y4 Condenser Fan VFD Output (Circ B) 7 or Water Valve Output Circ B VDC % Digital Outputs NO1 Compressor 1 Start 24VAC = Start Comp NO2 Compressor 2 Start 4 24VAC = Start Comp NO3 Compressor 3 Start 9 24VAC = Start Comp NO4 Compressor 4 Start 9 24VAC = Start Comp NO5 NO6 NO7 NO8 Global Alarm Output BMS Output 24VAC = Unit Alarm NC8 NO9 Condenser Fan VFD Start 24VAC = Start Cond Fan NO10 Condenser Fan Stage 2 Start 24VAC = Start Cond Fan NO11 Condenser Fan Stage 3 Start 24VAC = Start Cond Fan NO12 ASHP Defrost Active BMS Output 10 24VAC = Defrosting NC12 NO13 Reversing Valve Output 5 24VAC = Heating NC13 1 Units with Active Head Pressure Control 2 Units with AHPC and more than 1 Compressor 3 User Selectable Input Type: VDC, VDC, or 4-20 ma 4 Units with more than 1 Compressor 5 Heat Pump Units Only 6 WSHP Units Only Casing with AHPC 2.0 Only 8 WSHP Units with more than 1 Compressor 9 Units with 4 Compressors 10 When Defrost is Active, an auxiliary heat source should be enabled. Page 46

48 Appendix E LCD Map Controls Lite LCD Map The following is a representation of the screen layout for the User Interfaces. Not all screens are available on every unit. Please see the unit s submittal information for the correct unit configuration. MAIN MENU UNIT ENABLE UNIT STATUS CTRL VARIABLES ALARM MENU UNIT ENABLE CTRL VARIABLES CTRL VARIABLES Enable/Disable Unit Refrigeration (cont'd) Advanced (cont'd) Heat Pump Control (cont'd) Service Info UNIT STATUS ASHP Defrost 7 Unit Information Main Unit Status Screen Cancel Defrost 7 Blackout Information Active Request Signals Max Defrost Time 7 c.pco Board Info Lockout Conditions Heat Pump Htg Low Amb Lockout 5 Compressor Info Outdoor Air Conditions Advanced Export Logs Files Hot Gas Reheat Request Login EOL Test Compressor Request Enter Password Enable EOLT Refrigerant Circuit A Info Adv. Setpoints Manual Overrides Refrigerant Circuit B Info 1 Cooling PID Tuning Manual Override Mode Compressor Command (Std HPC ) 2 Cond Pressure PID Tuning BMS Comp Ctrl Request Condenser Fan Control (AHPC) 3 HGRH Purge Mode 6 BMS HGRH Request 6 WSHP Water Valves 4 Purge Interval 6 Comp On/Off Request Purge Duration 6 Modulating Comp Signal 8 CTRL VARIABLES Digital Scroll Min Mod Signal 8 Cond Press Control 3 Temp Control Login Duration WSHP Valve Control 4 Mode Switch Delay Alarm Management Reversing Valve 5 Cooling Ambient Lockout Alarm Output ASHP Defrost Active 7 Heating Ambient Lockout 5 General Alarms Global Alarm Refrigeration High Sat. Discharge Temp Compressor Control Low Sat. Discharge Temp 4 Cooling Add Delay Fan Alarm Delay ALARM MENU Cooling Sub Delay Unit Save/Restore Active Alarms Heating Add Delay 5 Save Unit Settings Alarm Number Heating Sub Delay 5 Restore USB Settings Time and Date Alarm Occurred Minimum On Time Restore NAND Settings Alarm Text Minimum Off Time Unit Config Stored Text and Value 1 Cooling Coil Staging Safety Unit Configuration Stored Text and Value 2 Cooling Coil Low Limit Cooling Enable Alarm History Condenser Control Heating Enable 5 Alarm Number AHPC Cooling Setpoint ASHP Defrost En 7 Time and Date of Event AHPC Dehumidifying Setpoint 6 Controls Model Number Alarm Text AHPC Clg/Dehum Offset Unit Settings Event (Start/Stop) AHPC Heating Setpoint 5 Unit IP Address Stored Text and Value 1 AHPC Heating Offset 5 Unit of Measure Stored Text and Value 2 Heat Pump Control Unit Altitude Clear Alarm History WSHP Water Valves Min Open 4 Time and Date Export Alarms Cooling On Position 4 BMS Request Signals Save In: Heating On Position 4 Comp Req Type Off Position 4 HGRH Req Type 6 1 Units with more than 1 compressor 2 Units with Standard Head Pressure Control 3 DX or ASHP Units with Active Head Pressure Control 4 WSHP units only 5 Heat Pump Units 6 Units with HGRH Installed 7 ASHP units only 8 Units with a Digital Scroll Compressor Page 47

49 Appendix F Cutouts and Definitions The following table is a quick reference to unit alarms and safeties. Digital Inputs & Sensor Failures Cutout Reset Low Pressure Switch - Air Cooled Dx 75psi (+/- 5) Low Pressure Switch - ASHP & WSHP 25psi (+/- 5) ALARMS AND SAFETIES 95psi (+/- 7) 50psi (+/- 5) Sensor Type Switch Switch High Pressure Switch 610psi (+/- 25) Switch Reset Type Auto Auto Switch Affects Supply Fan Status DI Open DI Closed Auto Shutdown Fan Alarm Delay Refrigerant Pressure Transducer Sensor Alarm 25.0 < > psi VDC Shutdown Input DI Open DI Closed 24 VAC Auto Shutdown Provided by others Auto 3x in 1 hr Circuit Circuit Circuit Circuit Cooling Coil Temp Sensor Alarm From Carel OS NTC 10K Manual General Outside Air Temp Sensor Alarm From Carel OS NTC 10K Auto General Outside Air Humidity Sensor Alarm Defrost 3 Strikes Non-Adjustable Alarms and Safeties High T-Memory Writes Adjustable Alarms and Safeties 1.0% < > 99.0% VDC Auto Cutout Reset Reset Type SST < -5.0 F OR SST > SST < 30.0 F AND 60.0 F SST < OA Dwpt F OS fault regarding frequent writing of permanent/retained memory Warning locations 200 times in 4 minutes Auto Auto Minimum Maximum Default Reset Type 3x in 1 hr Lockout 3x in 1 hr 3x in 1 hr Lockout Lockout General Affects Heating Affects Cooling Ambient Lockout 50.0 F 90.0 F 55.0 F +2.0 F General Heating Ambient Lockout 65.0 F F 80.0 F -2.0 F General HP Heating Low Ambient Lockout 10.0 F 50.0 F 17.0 F +5.0 F Heating ASHP HP Heating Low SST Lockout F 0.0 F 15.0 F +3.0 F Heating WSHP High Saturated Discharge Temperature F F F -5.0 F Circuit Low Saturated Suction Temperature 0.0 F 40.0 F 25.0 F +5.0 F Cooling Coil Low Limit 35.0 F 45.0 F 42.0 F +4.0 F Cooling Coil Staging Safety 35.0 F 55.0 F 46.0 F +4.0 F ASHP Max Defrost 5 min 20 min 10 min 3x in 1 hr OAT > RecOAT F OR OAH < RecOAH % OR Unit Disabled for 1 hour Circuit Comp Ramp Comp Staging Heating Notes Tells if the sensor is opened or shorted Tells if the sensor is opened or shorted Notes ASHP - Minimum SST of 2 circuits WSHP Heating Notes Records and saves the OAT and OAH when the condition occurs Page 48

50 The following table is a quick reference for control variables ranges and defaults. VALENT VARIABLES MIN, MAX, DEFAULT Control Variables Notes Temperature Control Minimum Maximum Default Mode Switch Delay 30 sec 600 sec 60 sec Cooling Ambient Lockout 50.0 F 90.0 F 55.0 F Heating Ambient Lockout 65.0 F F 80.0 F Refrigeration Compressor Control Minimum Maximum Default Cooling Add Delay 10 sec 300 sec 60 sec Cooling Sub Delay 10 sec 300 sec 15 sec Heating Add Delay 10 sec 300 sec 60 sec Heating Sub Delay 10 sec 300 sec 15 sec Compressor Minimum On Time 0 sec 120 sec 0 sec Compressor Minimum Off Time 90 sec 300 sec 180 sec Clg Coil Staging Safety 35.0 F 55.0 F 46.0 F Clg Coil Low Limit 35.0 F 45.0 F 42.0 F Condenser Control Minimum Maximum Default Condenser Pressure Cooling 80.0 F F 90.0 F Condenser Pressure Dehumidifying 80.0 F F F Condenser Pressure Clg/Dehum Offset 1.0 F 20.0 F 5.0 F Condenser Pressure Heating 40.0 F 55.0 F 50.0 F Condenser Pressure Heating Offset 1.0 F 10.0 F 2.0 F Heat Pump Control Minimum Maximum Default WSHP Valve Min Open Position Cooling (On) 0.0% 50.0% 15.0% WSHP Valve Min Open Position Heating (On) 0.0% 50.0% 15.0% WSHP Valve Off Position (Bypass) 0.0% 100.0% 100.0% WSHP Heating SST Lockout F 0.0 F F ASHP Heating Low Ambient Lockout 10.0 F 50.0 F 17.0 F ASHP Cancel Defrost 55.0 F 80.0 F 60.0 F ASHP Max Defrost Time 5 min 20 min 10 min Advanced Menu Password Protected - Read Only, Service, Factory Login Minimum Maximum Default Enter Password Current Access Level Read Only; Service Level; Factory Level Read Only Page 49

51 VALENT VARIABLES MIN, MAX, DEFAULT Manual Overrides Minimum Maximum Default Enable Disabled (0) Enabled (1) Disabled Duration 0 min 480 min 480 min Compressor Control Request Enable Off (0) Override (1) Auto Value 0.0% 100.0% 0.0% Hot Gas Reheat Request Enable Off (0) Override (1) Auto Value 0.0% 100.0% 0.0% Compressor On/Off Enable Off (0) Override (1) Auto Compressors (1-4) Off (0) On (1) Off Modulating Comp Signal Enable Off (0) Override (1) Auto Value 0.0% 100.0% 0.0% Cond Pressure Control (WSHP Water Valves) Enable Off (0) Override (1) Auto Circuits (1-2) 0.0% 100.0% 0.0% Fan Stages (1-3) Off (0) On (1) Off AHPC 1.0 only Reversing Valve Enable Off (0) Override (1) Auto Position Cooling (0) Heating (1) Cooling ASHP Defrost Active Enable Off (0) Override (1) Auto Defrost Inactive (0) Active (1) Active Global Alarm Output Enable Off (0) Override (1) Auto State Normal (0) Alarm (1) Normal Advanced Setpoints Minimum Maximum Default Cooling PID Tuning P Gain I Time 0 sec 1000 sec 120 sec Cond Pressure PID Tuning P Gain I Time 0 sec 1000 sec 25 sec HGRH Purge Mode Purge Interval 60 min 600 min 60 min Purge Duration 1 min 10 min 2 min Digital Scroll Min Mod Signal 15.0% 100.0% 15.0% Digital Scroll Min Mod Signal - Dehum 15.0% 100.0% 50.0% Login Duration 5 min 60 min 10 min Page 50

52 VALENT VARIABLES MIN, MAX, DEFAULT Alarm Management Password Protected - Read Only, Service, Factory Alarm Digital Output Any Alarm Shutdown Any Alarm General Alarms Minimum Maximum Default High Saturated Discharge Temperature F F F Low Saturated Suction Temperature 0.0 F 40.0 F 25.0 F Fan Alarm Delay 30 sec 120 sec 60 sec Unit Save Restore Minimum Maximum Default Unit Setting Save Save in NAND Memory USB Drive NAND Memory Insert USB drive for USB Drive Save Save Do Not Save () Save () Do Not Save () Unit Setting Restore Unit: (Disable Unit Prior to Restore) Disabled Enabled Enabled Restore from Mem (Date of Save) No Restore () Restore () No Restore () Reboot to restore from USB drive Unit Configuration Minimum Maximum Default Cooling Enable Disabled () Enabled () Enabled () Heating Enable Disabled () Enabled () Enabled () ASHP Defrost Enable Disabled () Enabled () Enabled () Controls Model Number Breakout Unit Settings Minimum Maximum Default Unit IP Address Current Ethernet Addressing DHCP Enable Disabled () Enabled () Disabled () IP Address Mask (Subnet Mask) GW (Gateway) DNS Save Changes Do Not Save () Save () Do Not Save () Requires Reboot of controller Unit of Measure UofM Zone USA (0), Canda (1), SI (2) USA Static Pressure "wc Pa "wc Timezone Regions Unit Altitude 0 ft ft 0 ft (1) Australia Time and Date (2) Europe Time 12:00 AM 11:59PM Current Time (3) New Zealand Date Jan 1, 2000 Dec 31, 2099 Current Date (4) USA & Canada Timezone (5) Asia Timezone Region (USA & Canada) (6) Central/South America Current Timezone Region (Central Time) Table available upon request Timezone Rule (CST6CDT) Table available upon request BMS Request Signals Comp Req Type VDC; VDC; 4-20mA VDC HGRH Req Type VDC; VDC; 4-20mA VDC Page 51

53 VALENT VARIABLES MIN, MAX, DEFAULT Service Info Minimum Maximum Default Unit Information Job Name SO# Unit DRC Date Code Rev Code Date Read Only Hardcoded on mask Blackout Information Record # of Total records Power cycled MM/DD/YY HH:MM.SS Power lost for x Days, x Hrs, x Mins c.pco Board Info Cycle Time Cycles (per second) Board Temp Read Only Board Power Compressor Info Run Hours # of Starts Read Only History of power loss to the controller Page 52

54 Appendix G Tables Unit Status Line Table Number Condition Description 1 Unit Disabled The unit is not enabled at the Unit Enable screen at the Valent controller. Waiting for the Supply Fan to prove airflow for the unit to start. The third-party device is 2 Wait for Supply Fan requesting compressor operation. Cooling mode is NOT available but controls are enabled. OAT < Cooling Lockout; OR 3 Cooling Not Available CLT < Clg Coil Low Limit for 3 minutes; OR Cooling mode is disabled. Heat Pump Heating mode is NOT available but controls are enabled. OAT > Heating Lockout; OR OAT < HP Htg Low Ambient Lockout (ASHP); OR 4 HP Htg Not Available Defrost 3 Strikes lockout; OR SST < HP Htg Low SST Lockout Circuit A and Circuit B (WSHP); OR Heating mode is disabled. Heating mode is NOT available but controls are enabled. 5 Heating Not Available OAT > Heating Lockout; OR Heating mode is disabled. 6 Clg Coil LAT Sens Alm The Cooling Coil Leaving Air Temperature sensor is opened or shorted. 7 OA Temp Sensor Alm The Outdoor Air Temperature sensor is opened or shorted. 8 Shutdown Input Alm The Shutdown Input at ID6 is open (0 VAC). Low Cooling Coil Leaving Air Temperature (CLT) 9 Low Clg Coil LA Temp CLT < Cooling Coil Low Limit for 3 minutes o CLT > Cooling Coil Low Limit F for 3 minutes to reset Supply Fan input (ID1) is open (0 VAC) for more than the Fan Alarm Delay when 10 Supply Fan Alarm Controls are enabled; AND A request for compressors. 11 Overrides Active Manual Override is enabled. Cooling Coil Safety is active. 12 Clg Coil Stage Safety CLT < Cooling Coil Staging Safety o CLT > Cooling Coil Staging Safety F to reset Cooling Ambient Lockout 13 Clg Ambient Lockout OAT < Cooling Lockout Heating Ambient Lockout 14 Htg Ambient Lockout OAT > Heating Lockout Heat Pump Heating Low Ambient Lockout for ASHP only 15 HP Htg Low Ambient OAT < HP Htg Low Ambient Lockout Heat Pump Mode Switch Delay indicates that the unit is switching modes of operation from 16 HP Mode Switch Delay cooling to heating or vice versa. All compressor operation is off and not available until the delay has expired. ASHP is currently in a defrost cycle. SST < -5.0 F; OR 17 ASHP Defrost Enabled (SST < 30.0 F) and (SST < (OA Dewpoint 25.0 F)) o SST >= ASHP Cancel Defrost setpoint to complete defrost cycle ASHP is not available to heat due to the defrost cycle creating 3 strikes. Remains in Defrost cycle longer than the Max Defrost Time; OR Enters the Defrost cycle 3 times within any 1 hour. 18 Defrost 3 Strikes o Reset 3 Strikes OAT > Recorded OAT F; OR OAH > Recorded OAH %; OR 3 Strikes lockout for 1 hour. Limiting Digital Scroll compressor output to 20.0% due to High Saturated Discharge or Low 19 Limit Digital Scroll Saturated Suction Temperature conditions Limiting Compressor Control Ramp output to secondary PID control loop when the Cooling 20 Limit Comp Ctrl Ramp Coil Staging Safety is active. 21 Compressor Delay Compressor start being delayed due to the opening of the WSHP water valve for the circuit. Page 53

55 Number Condition Description Hot Gas Reheat Purge Cycle is active. HGRH Circuit has at least 1 compressor operating; AND 22 HGRH Purge Active HGRH valve has NOT been open more than 80.0% for at least 2 minutes in the last hour. HGRH Valve opens to 100.0% for the Purge Duration. 23 Dehumidifying Dehumidification is active. 24 Dehum Not Available Dehumidification is not currently available due to a compressor in the HGRH circuit not being available. 25 Dehum Wait Comp Time Dehumidification is waiting on a compressor run time to reach 2 minutes. Dehumidification has been requested from the third-party device. 26 High Press Sw Alm A High Pressure Switch Alarm Circuit A 27 High Press Sw Alm B High Pressure Switch Alarm Circuit B 28 Low Press Sw Alm A Low Pressure Switch Alarm Circuit A 29 Low Press Sw Alm B Low Pressure Switch Alarm Circuit B 30 Ref Press Trans Alm A Refrigerant Pressure Transducer Alarm Circuit A 31 Ref Press Trans Alm B Refrigerant Pressure Transducer Alarm Circuit B 32 Low Sat Suct Temp A Low Saturated Suction Temperature Circuit A 33 Low SST Strike 3 - A Low Saturated Suction Temperature 3 Strike lockout Circuit A 34 Low Sat Suct Temp B Low Saturated Suction Temperature Circuit B 35 Low SST Strike 3 - B Low Saturated Suction Temperature 3 Strike lockout Circuit B 36 High Sat Dsch Temp A High Saturated Discharge Temperature Circuit A 37 High Sat Dsch Temp B High Saturated Discharge Temperature Circuit B 38 Comp 1 Min Time On Compressor Minimum Time On Compressor 1 39 Comp 2 Min Time On Compressor Minimum Time On Compressor 2 40 Comp 3 Min Time On Compressor Minimum Time On Compressor 3 41 Comp 4 Min Time On Compressor Minimum Time On Compressor 4 42 Comp 1 Min Time Off Compressor Minimum Time Off Compressor 1 43 Comp 2 Min Time Off Compressor Minimum Time Off Compressor 2 44 Comp 3 Min Time Off Compressor Minimum Time Off Compressor 3 45 Comp 4 Min Time Off Compressor Minimum Time Off Compressor 4 46 Waiting for Comp Req Waiting for Compressor Control Request from the third-party device to be > 5.0% (0.5 VDC) 47 Comp Stage Off Wait Wait to stage off a compressor if any compressor is being held on by a Minimum On Timer 48 Comp Stage On Wait Wait to stage on a compressor if any compressor is being held off by a Minimum Off Timer 49 OA Humidity Sens Alm Outdoor Air Humidity Sensor Alarm 50 WSHP Htg Low SST Cir A WSHP Heating Low SST Lockout Circuit A SST < HP Htg Low SST Lockout 51 WSHP Htg Low SST Cir B WSHP Heating Low SST Lockout Circuit B SST < HP Htg Low SST Lockout Page 54

56 Alarm ID Table AL# Alarm 0 High T-Memory Writes 1 Retain mem write error 2 Ref Press Trans Alm A 3 Ref Press Trans Alm B 4 Clg Coil LAT Sens Alm 5 OA Temp Sens Alm 6 OA Humidity Sens Alm 7 High Press Sw Alm A 8 High Press Sw Alm B 9 Low Press Sw Alm A 10 Low Press Sw Alm B 11 Shutdown Input Alm 12 Supply Fan Alarm 13 Low Clg Coil LA Temp 14 High Sat Disch Temp A 15 High Sat Disch Temp B 16 Low Sat Suct Temp A 17 Low Sat Suct Temp B Sensor Error Code Table Error Code Error description 10 No error 0 Unknown error -1 NTC/PTC input is open -2 NTC/PTC input is shorted -3 Voltage input exceed max allowed value -4 Voltage input exceed min allowed value -5 Channel is out of range -6 Channel is not readable due to previous bi-channel probe -8 Scaling variable reference are invalid -9 Out of range probe type selected -100 IO system has not started due to a severe error Page 55

57 Appendix H Trend Logs The following information is available by downloading the logs stored on the Valent controller. The information is logged once every minute for seven days. The time and date of the logs are in the first column to the left when the.csv file is opened in Microsoft Excel. Controls Lite Trend Variable Description Type ASHP_Defrost_Act_Out ASHP Defrost Cycle Active Boolean Ref_Press_A_Trans_In Refrigerant Pressure Transducer Reading A Real Ref_Press_B_Trans_In Refrigerant Pressure Transducer Reading B Real ClgCoil_LAT_In Cooling Coil Leaving Air Temperature Real Outdoor_Air_Temp_In Outdoor Air Temperature Real Outdoor_Humidity_In Outdoor Air Humidity Real Sup_Fan_Status_In Closed (0)= Fan On Boolean HP_Switch_A_In Closed (0)= Normal Boolean HP_Switch_B_In Closed (0)= Normal Boolean LP_Switch_A_In Closed (0)= Normal Boolean LP_Switch_B_In Closed (0)= Normal Boolean Shutdown_BMS_In Closed (0)= Run from BMS Boolean HeatPump_Htg_Clg_Ctrl_BMS_In Closed = Heating(0); Open = Cooling(1) Boolean DSC_Signal_Out Digital Scroll Compressor Signal Output Real Cond_Fan_VFD_Cir_A_Out Condenser Fan VFD Signal Output - Circuit A Real Cond_Fan_VFD_Cir_B_Out Condenser Fan VFD Signal Output - Circuit B Real HGRH_Valve_Out Hot Gas Reheat Valve Signal Output Real Comp_1_Start_Out Compressor Start Signal Boolean Comp_2_Start_Out Compressor Start Signal Boolean Comp_3_Start_Out Compressor Start Signal Boolean Comp_4_Start_Out Compressor Start Signal Boolean Cond_Fan_Start_VFD_Out Condenser Fan VFD Start Signal - Stage 1 AHPC 1.0 or AHPC 2.0 Boolean Cond_Fan_Start_2_Out Condenser Fan VFD Start Signal - Stage 2 AHPC 1.0 or AHPC 2.0 Boolean Cond_Fan_Start_Stg_3_Out Condenser Fan Start Signal - Stage 3 AHPC 1.0 Boolean Reversing_Valve_Out Reversing Valve Signal (0 = Cooling; 1 = Heating) Boolean Ref_Press_Trans_A_Avg Refrigerant Pressure Average Circuit A Real Ref_Temp_A_Avg Refrigerant Temperature Average Circuit A Real Ref_Press_Trans_B_Avg Refrigerant Pressure Average Circuit B Real Ref_Temp_B_Avg Refrigerant Temperature Average Circuit B Real Comp_Capacity Compressor Capacity percentage Real Dehum_Mode_En Dehumidification Mode Enabled Boolean Override_Active Manual Override Active Boolean HGRH_Purge_Act Hot Gas Reheat Purge Cycle Active Boolean DSC_Signal_Disp Digital Scroll Compressor Capacity Output Real Op_Mode_Disp Operating Mode (0=Cooling; 1=Heating; 2=Heating/Defrost) Integer Curr_AHPC_Setpt Current AHPC Setpt Real Act_Ctrl_Temp_1 Active Control Temp - Cond Ramp 1 Circuit A Real Act_Ctrl_Press_1 Active Control Press - Cond Ramp 1 Circuit A Real Act_Ctrl_Temp_2 Active Control Temp - Cond Ramp 2 Circuit B Real Act_Ctrl_Press_2 Active Control Press - Cond Ramp 2 Circuit B Real Comp_Control_Ramp Compressor Control Request Out Real ClgCoil_Safety_Ramp Cooling Coil Safety Ramp Real Limit_DSC_Output Limiting Digital Scroll Compressor Boolean HGRH_Control_Ramp Hot Gas Reheat Control Request Out Real Unit_Status_Number Unit Status Line Enumeration Integer Page 56

58 Controls Lite Trend Reals Ints Variable Description Type Ref_Press_A_Trans_In Refrigerant Pressure Transducer Reading A Real Ref_Press_B_Trans_In Refrigerant Pressure Transducer Reading B Real ClgCoil_LAT_In Cooling Coil Leaving Air Temperature Real Outdoor_Air_Temp_In Outdoor Air Temperature Real Outdoor_Humidity_In Outdoor Air Humidity Real DSC_Signal_Out Digital Scroll Compressore Signal Output Real Cond_Fan_VFD_Cir_A_Out Condenser Fan VFD Signal Output - Circuit A Real Cond_Fan_VFD_Cir_B_Out Condenser Fan VFD Signal Output - Circuit B Real HGRH_Valve_Out Hot Gas Reheat Valve Signal Output Real Ref_Press_Trans_A_Avg Refrigerant Pressure Average Circuit A Real Ref_Temp_A_Avg Refrigerant Temperature Average Circuit A Real Ref_Press_Trans_B_Avg Refrigerant Pressure Average Circuit B Real Ref_Temp_B_Avg Refrigerant Temperature Average Circuit B Real Comp_Capacity Compressor Capacity percentage Real DSC_Signal_Disp Digital Scroll Compressor Capacity Output Real Op_Mode_Disp Operating Mode (0=Cooling; 1=Heating; 2=Heating/Defrost) Integer Curr_AHPC_Setpt Current AHPC Setpt Real Act_Ctrl_Temp_1 Active Control Temp - Cond Ramp 1 Circuit A Real Act_Ctrl_Press_1 Active Control Press - Cond Ramp 1 Circuit A Real Act_Ctrl_Temp_2 Active Control Temp - Cond Ramp 2 Circuit B Real Act_Ctrl_Press_2 Active Control Press - Cond Ramp 2 Circuit B Real Comp_Control_Ramp Compressor Control Request Out Real ClgCoil_Safety_Ramp Cooling Coil Safety Ramp Real HGRH_Control_Ramp Hot Gas Reheat Control Request Out Real Unit_Status_Number Unit Status Line Enumeration Integer Page 57

59 Appendix I Upgrading an Application Program A new application program, controller operating system (OS), or Web UI pages can be uploaded to the Valent controller via FTP, USB connection to a computer (COM port), or USB flash drive. USB Flash Drive Upload The following instructions are for uploading a new file with a USB flash drive. Please see Appendix J for connecting to the Valent controller via FTP or USB to computer. 1. Obtain the latest Valent Controls application program from Valent Service Support, configured with the correct Controls Model Number for the unit(s) requiring the upgrade. The application program will be packaged with the current OS and Web UI pages. 2. Save user settings that may need to be restored after the upgraded application program is installed. See Unit Save/Restore section under the Advanced menu. 3. Prepare a USB flash drive with the FAT32 file system with the application program. a. Insert a USB flash drive into a USB port on the computer. b. Find the Removable Disk drive with Windows Explorer. c. Right click on the drive and go to Format. The current File system of the USB flash drive is displayed (Figure 40). d. If the File system is FAT32, press the Close button. If the File system is not FAT32, use the drop down to select FAT32 and press the Start button. A pop-up box with a WARNING requires the user to click the OK button (Figure 41). If the Figure 40: Format a flash drive flash drive has other files on it, the files should be removed to a different location before the formatting is done. e. After the USB flash drive format is completed, create a folder on the drive called Upgrade. f. Unzip the file obtained from Valent Service Support. The file will be named for according to the application version number, the sales order number, Figure 41: Formatting will erase all data and line item. This application file contains the controls model number for the configuration of the unit along with job information for each unit. If more than one unit is being upgraded, it is important to not mix the files in the case that the configurations and job information will be different. Pay close attention to job sites with multiple units. The application program contains unit configuration information that is unique to the specific unit. g. Put the version_so#_lineitem.ap1 (i.e. VAL_ _ _20.ap1) file in the Upgrade folder on the USB flash drive (Figure 42). Figure 42: Click and drag the file to the USB drive Page 58

60 4. Remove the USB flash drive, with the Upgrade folder and application file saved, from the computer. 5. Insert the USB flash drive into the USB-A slot on the Valent Controller. Refer to Figure 43. a. The LCD hand-held terminal must be connected to the Valent Controller at J10 to upload the new application program. 6. Press the Enter ( ) button to confirm upload of the application program or any other button to cancel the upload (Figure 44). a. Press the Enter button for the controller to upload the application program. b. The upload and install may take a few minutes. The LCD will continue to show the progress of the upload and install. c. When the LCD says Upload successful (Figure 45), remove the USB flash drive and press the Enter button to restart the controller. d. The Valent controller will go through a reboot. Figure 43: Location of USB-A slot Figure 44: Press Enter to upload 7. After uploading a new program, the following steps must be completed to clear the permanent memory variables and reset the default settings of the application. a. Hold the Enter and Alarm buttons simultaneously for 3-5 seconds (refer to Transferring Files, Step 5a). b. When the system menu appears, arrow down to the Application selection and press Enter. Figure 45: Upload completed c. In the Application sub-menu, arrow down to Wipe Retain and press Enter. d. The controller will go through clearing and repopulating the variables of the application with the values and defaults of the newly loaded program. 8. Restore any saved user settings. See Unit Save/Restore section under the Advanced Menu. Note: If the reason for a new program was a controls model number change, the restore should not be completed. This would change the CMN back to the old number. Page 59

61 Appendix J Connecting to the Controller Connecting to the Valent controller can be accomplished via FTP or USB-B to a computer. After connecting to the controller, files can be transferred to or from the controller. FTP Connection Connect the controller to a computer via FTP Client software. The program used in this example is FileZilla, a free internet download FTP Client (Figure 46). 1. Connect the Valent controller to a computer via Ethernet: a. Computer to controller direct connection; OR b. LAN network connection. 2. Open the FTP software. 3. Enter the IP Address of the controller into the Host field. 4. Enter anonymous as the Username. 5. No password is needed. 6. Press the Quick Connect button. User s Computer Valent Controller Figure 46: Example of FTP Client screen 7. Files can now be transferred from the user s computer (local site) to the Valent Controller (remote site). Refer to the Transferring Files section for more information. USB Connection Connect the controller to a computer via a USB cable as a COM port. 1. Using a USB-A to USB-B cable (Figure 47), connect the computer (USB-A) to the controller (USB-B;Figure 48). USB-B USB-A Figure 47: USB-A to USB-B cable Figure 48: Location of USB-B slot 2. Open Windows Explorer a. The controller creates a drive in the computer tree as if it were a flash drive, called Removable Disk and a drive letter (Figure 49). b. Click on the drive so the contents on the controller show in the window. Figure 49: Removable disk drive information Page 60

62 Transferring Files 1. The user can access the UPGRADE and HTTP folders and any files displayed in the main folder after connecting to the controller via FTP or USB. 2. The log files for the Alarm Log and Trends (.csv) that were saved to NAND memory can be transferred from the controller to a computer. 3. The User Backup.txt file that was saved to NAND memory can also be transferred to a computer via FTP. 4. The application program and operating system upgrades (.ap1), and Web UI page changes (HTTP) can be transferred from the computer to the controller and placed in the appropriate folders UPGRADE or HTTP respectively. 5. After placing a file in the UPGRADE folder, the user has to install the upgrade from the hand-held terminal at the unit or via the WEB UI. a. Simultaneously hold the Alarm and Enter ( & ) buttons for 3-5 seconds on the hand-held terminal or use the Multikey Function on the Web UI (Figure 50) and press the Simulate long press button to bring up the System Menu. Figure 50: Multikey function buttons b. Arrow to UPGRADE and press the Enter button. c. The files that were placed into the UPGRADE folder appear on the screen (Figure 51). d. Press Enter on the file for the application program or operating system to be upgraded. e. A confirmation is requested for the upgrade to be completed. f. The Valent Controller will ask for a confirmation key press of the Enter ( ) button to upload the application program or any other Figure 51: Files in the Upgrade folder button to cancel the upload of the upgrade. i. Press the Enter button for the controller to upload the application program. ii. The upload and installation may take a few minutes. The LCD will continue to show progress. iii. When the LCD says Upload successful, press the Enter button to restart the controller. iv. The Valent controller will go through a reboot. g. Uploading the new program also resets all variables to the default settings of the application. h. After uploading a new program, the following steps must be completed to clear the permanent memory variables and reset the default settings of the application. i. Hold the Enter and Alarm buttons simultaneously for 3-5 seconds (refer to Transferring Files, Step 5a). ii. When the system menu appears, arrow down to the Application selection and press Enter. iii. In the Application sub-menu, arrow down to Wipe Retain and press Enter. iv. The controller will go through clearing and repopulating the variables of the application with the values and defaults of the newly loaded program. i. Restore any saved user settings. See Unit Save/Restore section under the Advanced Menu. Page 61

63 Appendix K plan Addresses The plan Addresses of the Valent Controller and the LCD hand-held terminal must be correct in order for them to communicate with each other. Below are instructions for changing/checking the plan addresses of the Valent controller and the LCD hand-held terminal. If the LCD hand-held terminal and the controller are not communicating, please check the addressing as directed. Valent Controller plan The factory default plan Address for the controller is 1. The current plan address of the controller is displayed on the plan address display in the digital display window between terminal blocks J3 and J4 on the controller. If 01 is not displayed in the window, please perform the following to change it to 01. Locate the button (A) next to J3 on the c.pco control boards. This can be accessed using the tip of a controls screwdriver (Figure 52). 1. Press button A for 5 secondsto increase the brightness of the display. 2. Repeatedly press the button to change the address. 3. Release the button; in a few seconds the brightness decreases and the new plan address is saved to memory. 4. Cycle power to the controller. Figure 52: Set plan address hardware LCD Hand-Held Terminal The factory default plan Address for the LCD terminal is 32. Follow these steps to configure or view the address of the terminal. 1. Plug the hand-held terminal into the Valent controller at J10 with the phone cable provided. 2. Press the Arrow buttons, Up and Down, and the Enter button together (,, ) and hold for three seconds. 3. The screen to the right with the LCD s plan Address and the board it is communicating to appears (Figure 53). 4. If the addresses are not correct, 32 and 01, press Enter and use the Arrow buttons to set the LCD Display address setting to 32 and press Enter again. 5. Press the Up/Down/Enter button combination again. 6. Press Enter two times to get to the I/O Board address (controller). 7. Make sure the I/O Board address is 01 (Figure 54). Press Enter to accept if correct or change and press Enter. Figure 53: LCD plan address and I/O board 8. Press Enter again on the next screen to configure the terminal. 9. The sharing of information to terminals is configured on the next page. 10. Trm1 should read 32 and Pr for Private. 11. Make any necessary changes. 12. Enter through to the OK? and change to Yes and press Enter to accept the changes. Figure 54: Board address is 01. Page 62