Johnson Controls YORK YMC2 Operation And Maintenance Manual
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Johnson Controls YORK YMC2 Operation And Maintenance Manual

Johnson Controls YORK YMC2 Operation And Maintenance Manual

Mod b with optiview control center centrifugal liquid chiller with r-134a or r-513a refrigerant
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YMC
Mod B with OptiView Control
2
Center
Centrifugal Liquid Chiller with R-134a or R-513A Refrigerant
Operation and Maintenance
Issue Date: 2024-04-03
Form Number: 160.84-OM1 (424)
Supersedes: 160.84-OM1 (224)

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Summary of Contents for Johnson Controls YORK YMC2

  • Page 1 Mod B with OptiView Control Center Centrifugal Liquid Chiller with R-134a or R-513A Refrigerant Operation and Maintenance Form Number: 160.84-OM1 (424) Issue Date: 2024-04-03 Supersedes: 160.84-OM1 (224)
  • Page 2 Mod B with OptiView Control Center...

  • Page 3: Table Of Contents

    Contents General safety guidelines..........................5 C o n t e n t s Safety symbols............................5 Wiring warning............................6 Refrigerant warning..........................6 YORK Chiller Access Manager - system security statement............. 6 Changeability of this document......................8 Associated literature..........................9 Conditioned based maintenance.......................10 Proactive services..........................10 Nomenclature............................
  • Page 4 Operating inspections........................145 Checking the system for leaks......................146 System pressure test.........................146 System evacuation..........................149 Refrigerant charging......................... 153 Compressor and motor maintenance.....................156 Condensers and evaporator maintenance..................157 Electrical controls..........................160 Automatic battery health test during shutdown................160 Printing................................162 Printing overview..........................162 Acceptable printers........................... 162 Control center setup.........................

  • Page 5: General Safety Guidelines

    General safety guidelines Important: Read before proceeding. This equipment is a relatively complicated apparatus. During rigging, installation, operation, maintenance, or service, individuals might be exposed to certain components or conditions including, but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and both high and low voltage.

  • Page 6: Wiring Warning

    All wiring must be in accordance with the published specifications of Johnson Controls and must be performed only by a qualified electrician. Johnson Controls will not be responsible for damage or problems resulting from incorrect connections to the controls or application of incorrect control signals.
  • Page 7 V12 and later Mod B Customers and contractors must contact their local Johnson Controls office to create an asset and private key and to install the new microboard and new software. This installation and setup is a billable service request and the setup billable time may vary based on vertical market customer and site requirements.

  • Page 8: Changeability Of This Document

    ® information contained in this document is subject to change without notice. Johnson Controls makes no commitment to update or provide current information automatically to the manual or product owner. Updated manuals, if applicable, can be obtained by contacting the nearest Johnson...

  • Page 9: Associated Literature

    50.20-NM5 All Products - Replacement Parts Electrical Connectors 50.20-RP1 All Products - Replacement Parts Fittings 50.20-RP2 Application Data - A2L Refrigerant Supplement for Johnson Controls 160.00-AD10 Chillers YMC2 Centrifugal Liquid Chillers YORK Proactive Service Guide 160.84-PSG1 Mod B with OptiView Control Center...

  • Page 10: Conditioned Based Maintenance

    Conditioned based maintenance Traditional chiller maintenance is based upon assumed and generalized conditions. Instead of the traditional maintenance program, a Johnson Controls YORK Conditioned Based Maintenance (CBM) program can be substituted. This CBM service plan is built around the specific needs for the chiller, operating conditions, and annualized impact realized by the chiller.
  • Page 11 Figure 4: Vessel nomenclature Figure 5: Variable speed drive nomenclature Mod B with OptiView Control Center...

  • Page 12: System Fundamentals

    System fundamentals System components The YORK Model YMC centrifugal liquid chiller is completely factory-packaged including evaporator, condenser, compressor, motor, variable speed drive, battery power panel, OptiView™ control center, and all interconnecting unit piping and wiring. See Figure Figure 6: YMC chiller components Callout Description...
  • Page 13 Motor The compressor motor is a hermetic permanent magnet high speed design with magnetic bearings. The compressor impeller is overhung from the end of the motor shaft and has no bearings of its own. The motor includes angular contact ball bearings only engaged with the rotor shaft during shutdown after rotation is stopped or during shutdown due to loss of power to the magnetic bearings.
  • Page 14 Variable speed drive A variable speed drive will be factory packaged with the chiller. It is designed to vary the compressor motor speed by controlling the frequency and voltage of the electrical power to the motor. The control logic automatically adjusts motor speed as required to suit lift and capacity requirements.
  • Page 15 Figure 7: OptiView Control Center Table 5: OptiView™ Control Center buttons Button Description The decimal button provides accurate entry of setpoint values. A ± button has also been provided to allow entry of negative values and AM/ PM selection during time entry. In order to accept changes made to the chiller setpoints, the check button is provided as a universal enter button or accept symbol.
  • Page 16 SC-EQUIP provides Johnson Controls and YORK mechanical equipment such as the chiller with BAS networking connectivity. The chiller also maintains the standard digital remote capabilities as well. Both of these remote control capabilities allow for the following standard energy management system (EMS) interfaces.

  • Page 17: System Operation Description

    xx: Controls Revision level (00, 01, etc) • • y: Language Package (0=English only, 1=NEMA, 2=CE, 3=NEMA/CE ) zz: Language Package Revision level (00, 01, etc) • Software upgrades must be performed only by a service technician. System operation description In operation, a liquid to be chilled (water or brine) flows through the evaporator tubes, where its heat is transferred to low pressure liquid refrigerant sprayed over and pooled outside the tubes, boiling the refrigerant.
  • Page 18 whether loading or unloading is required to keep Leaving Chilled Liquid Temperature at setpoint. Motor speed is additionally and simultaneously adjusted as necessary to maintain the minimum compressor lift required to prevent surge. The sequence for operation of the control devices is as follows to achieve the best chiller efficiency: •...
  • Page 19 Shutdown setpoint is enabled, when an excess surge condition is detected a safety shutdown is performed and SURGE PROTECTION - EXCESS SURGE displays. Head pressure control The head pressure control feature enables chiller control of a field-mounted facility condenser water temperature control means, if one is necessary for prolonged cold water startup as described OptiView Control Center functions and navigation.
  • Page 20 Figure 8: Refrigerant flow-through chiller Table 6: Refrigerant states Icon Description Icon Description High pressure vapor Low pressure liquid refrigerant High pressure liquid refrigerant Low pressure vapor Callout Description Callout Description Variable speed drive Suction baffle Discharge line Liquid line Optional gas bypass valve Sub-cooler Compressor...

  • Page 21: System Operating Procedures

    System operating procedures Pre-starting Before starting the chiller, make sure that the display reads SYSTEM READY TO START. The panel can boot up only when line power is available to the VSD transformers and the UPS battery in the power panel is present and connected with its disconnect closed. CAUTION After periods of waterside maintenance or prolonged shutdown, vent any air from the chiller water boxes prior to starting the water pumps.

  • Page 22: Chiller Operation

    • Remotely through digital inputs in digital or analog remote mode, but the local keypad start must be pressed initially to enable the run permissive • Remotely using the SC-EQUIP in BAS (ISN) remote mode, but the local keypad start must be pressed initially to enable the run permissive To start the chiller press the start button on the home screen on the display panel.
  • Page 23 Table 8: Temperature setpoint Control source Local chilled liquid temperature setpoint Local leaving chilled liquid temperature setpoint, entered from the panel. It is programmable over the range of 38.0°F to 70.0°F (3.3°C to 21.1°C) for water or 10.0°F to 70.0°F (-12.2°C to 21.1°C) for brine. If Local Smart freeze is enabled, the range is 36.0°F to 70.0°F (2.2°C to 21.1°C) for water.

  • Page 24: Operator Setpoints Quick Reference

    Automatic temperature restart The temperature above the LCHLT setpoint at which the chiller is desired to automatically restart after a low LCHLT shutdown, as above, is programmed from the panel as Leaving Chilled Liquid Temperature Cycling Offset; Restart. This setting defines the temperature offset above the LCHLT setpoint where automatic restart is expected.

  • Page 25: Operating Logs

    50 sheets and may be obtained through the nearest Johnson Controls office. Figure 9: Liquid chiller log sheets Note: A pad of 50 log sheets can be ordered from your local Johnson Controls branch by requesting Form 160.84-MR1.

  • Page 26: Preparing For Prolonged Shutdown

    Preparing for prolonged shutdown If the chiller is to be shut down for an extended period of time, for example over the winter season, complete the following procedure: Test all system joints for refrigerant leaks with a leak detector. If any leaks are found, repair the leaks before allowing the system to stand for a long period of time.

  • Page 27: Optiview Control Center Functions And Navigation

    OptiView Control Center functions and navigation Interface conventions Each screen description in this document begins with a section describing the graphical elements on the screen, along with a short summary of the functions available. Each element on the screen is categorized into three distinct groups: •...
  • Page 28 Generating an access code using YORK Chiller Access Manager web platform Important: For software version V12 and later, all non-Johnson Controls entities will require a Johnson Controls Service Representative to load the private key. Contact your local Johnson Controls branch for service or visit http://www.york.com/chilleraccess/support...
  • Page 29 Figure 10: Selecting chiller region Click Manage Chillers and enter the chiller serial number in the search bar or select a chiller from the list. Figure 11: Selecting a chiller On the chiller asset page, click on the chiller. Figure 12: Chiller asset page Click Access Codes in the lower left area of the page.
  • Page 30 To view a list of your access codes, enter your name in the search bar and click the Search icon. To generate a new access code, click on the blue icon at the far right. Figure 14: List of access codes If your name is not displayed, click Add, search for your name, and click Generate code.
  • Page 31 View the new access code. Figure 17: New access code Generating an access code using YORK Chiller Access Manager app Log on to the YORK Chiller Access Manager app. Figure 18: YORK Chiller Access Manager app Tap the Add icon in the lower-right corner of the screen. Figure 19: Adding a chiller Mod B with OptiView Control Center...
  • Page 32 Scan the QR code on the chiller Login screen or enter the unit serial number. Figure 20: Scanning QR code On the Chiller Details screen, tap Generate Access Code. Figure 21: Chiller details Select a start date, if not today's date, and tap Generate Access Code. Figure 22: Generating access code Mod B with OptiView Control Center...
  • Page 33 View the new access code. Figure 23: New access code Logging on to the OptiView™ panel with YORK Chiller Access Manager To log on to the OptiView panel, press the Login button on the Home screen. Figure 24: Home screen On the Login screen, press the Login button.
  • Page 34 Enter your access code. Press the Enter (✓) button to confirm. Figure 26: Entering access code Change setpoints Some screens containing setpoints are programmable at the operator (V11 and earlier) and enhanced (V12 and later) access level. If the present access level is view, a change setpoints button is visible on the screen.
  • Page 35 Free cursor On screens that contain many setpoints, a specific button may not be assigned to each setpoint value. Instead, a button is assigned to enable the cursor arrow buttons below the numeric keypad, which are used to highlight the setpoint field. At this point, press the enter (✓) button to open a dialog box where you can enter a new setpoint value.

  • Page 36: Languages

    Languages The screens can be displayed in various languages. Language selection is done on the User screen. The desired language is selected from those available. Not all languages are available. English is the default language. If a language other than English is being displayed, an English speaking person should navigate to the User screen, using the preceding navigation chart, and select English.

  • Page 37: Optiview Screens

    OptiView screens Home screen Figure 27: Home screen When the chiller system is powered on, the default display shown in Figure 27 appears. The home screen display depicts a visual representation of the chiller itself. Animation indicates the chilled liquid flow and condenser cooling liquid flow when the flow switch inputs are satisfied. Table 14: Display only fields Field/LED name Description...
  • Page 38 Table 15: Programmable Button Access Description Login View Use this button to change the access level when the correct password is entered at the prompt. Logout Operator This button appears when a user is logged on at any level other than the view level.
  • Page 39 System screen Figure 28: System screen This screen gives a general overview of common chiller parameters for both shells. Table 17: Display only fields Field/LED name Description Discharge Temperature Displays the temperature of the refrigerant in its gaseous state at discharge of the compressor as it travels to the condenser.
  • Page 40 Table 17: Display only fields Field/LED name Description Head Pressure Displays the pressure difference between the condenser and evaporator (condenser minus evaporator). Only appears when Head Pressure Control is enabled. Head Pressure setpoint Displays the active Head Pressure Setpoint to which the head pressure is being controlled. Only appears when Head Pressure Control is enabled.
  • Page 41 Evaporator screen Figure 29: Evaporator screen This screen displays a cutaway view of the chiller evaporator. All setpoints relating to the evaporator side of the chiller are maintained on this screen. Animation of the evaporation process indicates whether the chiller is presently in a Run condition. Animation of the liquid flow indicates chilled liquid flow.
  • Page 42 Table 19: Display only fields Field/LED name Description Leaving Chilled Liquid Displays the value set for leaving chilled liquid temperature restart offset. Temperature Setpoints (Restart) – Offset Evaporator Saturation Displays the present saturation temperature in the evaporator, determined from evaporator Temperature pressure.
  • Page 43 Condenser screen Figure 30: Condenser screen This screen displays a cutaway view of the chiller condenser. All setpoints relating to the condenser side of the chiller are maintained on this screen. Animation indicates condenser liquid flow. This screen also serves as a gateway to controlling the refrigerant level. Table 22: Display only fields Field/LED name Description...
  • Page 44 Heat pump screen This is available for software version C.OPT.18.04.313 and later. Figure 31: Heat pump screen Heat pump is an available option on certain models of YMC chillers. The feature is enabled and disabled on the setup screen, at the service access level. When enabled, the heat pump screen is accessible from the condenser and the evaporator screens.
  • Page 45 Table 23: Display only fields Field/LED name Description Leaving Condenser Liquid Displays the actual offset being used to create the Leaving Condenser Liquid Temperature Temperature setpoints – setpoints – Shutdown temperature. See Leaving Condenser Liquid Temperature Cycling Effective Offset Offset – Shutdown setpoint description.
  • Page 46 Table 24: Programmable Button Access Description Leaving Condenser Liquid Operator Use this setpoint to specify the leaving condenser liquid temperature at Temperature Cycling Offset – which the heat pump shuts down on Leaving condenser liquid – high Shutdown temperature cycling shutdown in heating mode. This is done by defining an offset above the leaving condenser liquid temperature setpoint.
  • Page 47 Compressor screen Figure 32: Compressor screen This screen displays a cutaway view of the chiller compressor, revealing the impeller, and shows all conditions associated with the compressor. Animation of the compressor impeller indicates whether the chiller is presently in a Run condition. This screen also serves as a gateway to subscreens for navigating to capacity control and displaying MBC, surge, and VGD and power panel detail.
  • Page 48 Magnetic bearing controller screen Figure 33: Magnetic bearing controller screen This screen displays the orientation of the magnetic bearing axes relative to the compressor driveline. Pertinent parameters transmitted to the control panel from the Magnetic Bearing Controller (MBC) are displayed on this screen. Many parameters are shown in the diagram in the locations they represent.
  • Page 49 Table 28: Display only fields Field/LED name Description V2 (Current) Displays the magnetizing current to the upper bearing on the radial axis designated “V” for the opposite impeller end. V4 (Current) Displays the magnetizing current to the lower bearing on the radial axis designated “V” for the opposite impeller end.
  • Page 50 Magnetic bearing controller details screen Figure 34: Magnetic bearing controller details screen This screen displays the orientation of the magnetic bearing axes relative to the compressor driveline similar to the MBC screen. Additional pertinent parameters transmitted to the control panel from the MBC are displayed on this screen. Many parameters are shown in the diagram in the locations they represent.
  • Page 51 Table 30: Display only fields Field/LED name Description Motor Speed Indicates the compressor motor rotational speed. DC Bus Voltage Indicates the voltage of the DC Bus, which supplies the MBC. MBC Operation Time Indicates the cumulative time of operation of the MBC since initial power up. MBC Amplifier Temp Displays the temperature measured at the MBC bearing current amplifier board.
  • Page 52 Surge screen Figure 35: Surge screen overview This screen displays the chiller compressor and all parameters relating to the surge protection feature. All setpoints relating to this screen are maintained on this screen. Table 32: Display only fields Field/LED name Description Delta P/P A parameter that represents the system differential or head pressure.
  • Page 53 Table 33: Programmable Button Access Description Shutdown (Enabled/Disabled) Operator Allows the user to select whether the chiller will shut down or continue to run when an excess surge situation has been detected. Count Window Operator Allows the user to define the period of time (1 to 5 minutes; default 3) in which the number of surge events (Surge Window Count) are compared to the maximum allowed (Count Limit), for the purpose of detecting an excess surge situation.
  • Page 54 Variable geometry diffuser screen Figure 36: Variable geometry diffuser screen This screen displays information pertinent to the VGD operation. Table 35: Display only fields Field/LED name Description Active Stall Voltage Displays the stall detector output voltage (x.xxVdc), as received by the microboard, from the stall board.
  • Page 55 Power panel screen Figure 37: Power panel screen This screen displays information pertaining to the power panel, which includes the uninterruptable power supply (UPS) and storage battery for essential loads necessary for shutdown during a line power loss. Table 37: Display only fields Field/LED name Description Control Voltage (LED)
  • Page 56 Table 39: Navigation Button Description Home Causes an instant return to the Home screen. Compressor Causes an instant return to the Compressor screen. Causes an instant return to the VSD screen. Mod B with OptiView Control Center...
  • Page 57 Capacity control screen Figure 38: Capacity controls screen This screen displays the pertinent parameters associated with capacity control in relation to Leaving Chilled Liquid temperature, current and pressure overrides, and anti-surge control. This screen also provides a means for a service technician to control VGD, speed, and optional hot gas bypass valve manually for maintenance or service.
  • Page 58 Table 40: Display only fields Field/LED name Description Delta T Displays the difference between the temperature of the chilled liquid leaving the evaporator and the Leaving Chilled Liquid Active setpoint. Control State Displays the present source controlling the command to the capacity control devices, based on conditions as follows: •...
  • Page 59 Variable speed drive screen Figure 39: Variable speed drive screen This screen displays information pertaining to the VSD. Table 42: Display only fields Field/LED name Description Motor Run (LED) Indicates whether the digital output from the controls is commanding the motor to run. VSD Fault (LED) Indicates the VSD is reporting a fault over the communications link or by logic low at the hardwired digital input.
  • Page 60 Table 42: Display only fields Field/LED name Description Voltage Total Harmonic Displays the total harmonic distortion (THD) for each of the voltage lines as calculated by the Distortion - (L1, L2, L3) VSD. Input Current Total Demand Displays the total dynamic distortion (TDD) for each of the supply current lines as calculated Distortion - (L1, L2, L3) by the VSD.
  • Page 61 Variable speed drive details screen Figure 40: Variable speed drive details screen This screen displays more detailed parameters associated with the VSD. This screen also provides a means for a service technician to access setpoints or control the DC bus manually for maintenance or service.
  • Page 62 Table 45: Display only fields Field/LED name Description Input Current Limit (LED) Indicates the chiller input current is at the job FLA limit. Cooling System (LED) Indicates the relay controlling the VSD water pump output is energized. Precharge Active (LED) Indicates the VSD is pre-charging the DC bus.
  • Page 63 Motor details screen Figure 41: Motor details screen This screen displays information pertinent to the motor temperature monitoring feature. The feature consists of motor winding temperature and motor housing temperature. The individual winding temperature sensors can be disabled on this screen. Table 47: Display only fields Field/LED name Description...
  • Page 64 Table 47: Display only fields Field/LED name Description Ambient Dew Point When the optional Ambient Dew Point Temperature sensor is enabled, its reading is Temperature indicated here. Motor Cooling Valve Output to the motor cooling valve in percent from 0%, closed, to 100% opened. Command Motor Cooling Control State Displays whether the motor cooling valve is in auto or manual control.
  • Page 65 Setpoints screen Figure 42: Setpoints screen This screen provides a convenient location for programming the most common setpoints involved in the chiller control. This screen also serves as a gateway to a subscreen for defining the setup of general system parameters. Table 49: Display only fields Field/LED name Description...
  • Page 66 Table 50: Programmable Button Access Description Local Leaving Chilled Liquid Operator This is the range over which an analog signal or a digital signal (PWM) can Temperature - Range reset the Leaving Chilled Liquid Temperature setpoint above the operator programmed Base setpoint. Programmable as either 10°F, 20°F, 30°F or 40°F (5.5°C, 11.1°C, 16.6°C, or 22.2°C), with a default of 10°F (5.5°C), it is added to the base value to create a range over which the remote device can reset the setpoint.
  • Page 67 Setup screen Figure 43: Setup screen This screen is the top level of the general configuration parameters. It allows programming of the time and date, along with specifications as to how the time will be displayed (12 or 24 hour format). In addition, the chiller configuration, as determined by the state of the microboard program jumpers and program switches is displayed.
  • Page 68 Table 53: Programmable Button Access Description Auxiliary VSD Cooling Control Service Enables or disables optional VSD cooling control. Optimizer Control Admin Enables or disables optional optimizer control. Present Date Operator Allows the user to specify the present date. This value is critical to logging system shutdowns accurately and for utilizing the scheduling capabilities.
  • Page 69 Schedule screen Figure 44: Schedule screen The schedule screen contains more programmable values than a normal display screen. As such, each programmable value is not linked to a specific button. Instead press the select button to enable the cursor arrows, which you can use to highlight the day and the start or stop time that you need to modify.
  • Page 70 Table 55: Programmable Button Access Description Reset All Exception Days Operator Deletes all programming for exception days in the next six weeks. Select Operator Places a selection box around a start time for a given day. Use ◄ , ► , ▲, or ▼...
  • Page 71 User screen Figure 45: User screen On this screen, you can define custom user IDs and matching passwords. This allows the building administrator to assign custom passwords to those who are authorized to maintain the chiller. This screen displays attributes assigned to user IDs. There are no other display options. Table 57: Programmable Button Access...
  • Page 72 Comms screen Figure 46: Comms screen This screen allows definition of the necessary communications parameters. See Printing for details on the printer connections and setup. Presently, there are no COM 2 communications features available. This screen displays attributes assigned to COMMS IDs. There are no other display options. Table 59: Programmable Button Description...
  • Page 73 Printer screen Figure 47: Printer screen This screen allows definition of the necessary communications parameters for the printer. See Printing for details on printer connections and setup. Table 61: Display only fields Field/LED name Description Time Remaining Until Next Displays the time until the next print log will occur, if the function is enabled. Print Table 62: Programmable Button...
  • Page 74 This screen allows definition of the sales order parameters. The commissioning date is entered by the YORK/Johnson Controls service technician at the time of chiller commissioning. These values should never be changed or entered by anyone other than a qualified service technician. Entry instructions are included in the YORK YMCService Manual (Form 160.84-M2).
  • Page 75 Operations screen Figure 49: Operations screen This screen allows definition of general parameters having to do with the operation of the chiller. Table 66: Display only fields Field/LED name Description Chiller Run Time Displays the amount of time the chiller has been running since the last start signal was received.
  • Page 76 Maintenance screen Figure 50: Maintenance screen This screen displays the parameters associated with maintenance. The technician can use this screen to view, set, and acknowledge the maintenance schedule and tasks. Table 69: Display only fields Field/LED name Description Day Since Last Quarterly Displays the number of days that passed since the quarterly maintenance was performed.
  • Page 77 Table 70: Programmable Button Access level Description Condenser Small Displays the condenser small temperature difference warning threshold Test Op to enable or Temperature Difference setpoint. This allow you to adjust the setpoint range, from 6.0°F (-14.4°C) disable feature. Warning Threshold minimum to 30.0°F (-1.1°C) maximum, with a default of 6.0°F (-14.4°C).
  • Page 78 History screen Figure 51: History screen This screen allows the user to browse through the faults. For a more thorough reporting of the system conditions at the time of the recorded shutdown, use the History Details subscreen. Table 72: Display only fields Field/LED name Description Last Normal Shutdown...
  • Page 79 History details screen Figure 52: History details screen This screen allows the user to see an on-screen printout of all the system parameters at the time of the selected shutdown. Not all screens are shown above. The number of screens required to display all of the data varies according to type of motor starter and options applied.
  • Page 80 Custom screen Figure 53: Custom screen This screen allows up to 10 service technician selected parameters to be displayed. These parameters are selected from a list on the Custom view setup screen. This allows the service technician to display parameters pertinent to a particular problem during troubleshooting. At completion of the service call, the display can be cleared or the parameters can be left there for monitoring by operations personnel.
  • Page 81 Custom setup screen Figure 54: Custom setup screen This screen allows the service technician to select up to 10 parameters for display on the custom view screen. Table 80: Display only fields Field/LED name Description Slot Numbers Lists the available parameters that can be displayed. The preferred parameters for display are selected from this list.
  • Page 82 Trend screen Figure 55: Trend screen As many as six operator selected parameters (data points) can be plotted in an X/Y graph format. The X-axis is scaled to the selected data collection interval and displayed in a time of day or elapsed time format, as selected with the X-axis toggle button.
  • Page 83 Table 83: Programmable Button Access Description Start Operator Pressing this button clears the graph, starts a new graph, sets the time of day to the present clock time, and begins the trending. This button is only available if trending is stopped. If the selected chart type is triggered and trigger action is set to start, data collection does not begin until the triggers are satisfied and any selected trigger delay has elapsed.
  • Page 84 Trend setup screen Figure 56: Trend setup screen This screen is used to configure the trending screen. The parameters to be trended are selected from the common slots screen or common slots master list and entered as slot numbers for data points 1 through 6.
  • Page 85 Table 85: Programmable Button Access Description This is only displayed if the associated slot number is not 0. This is the maximum value displayed for the y-axis. Selecting a parameter for a data point sets this to the default value, which is the highest value allowed for that parameter.
  • Page 86 Advanced trend setup screen Figure 57: Advanced trend setup screen The preferred data collection start/stop triggers are setup on this screen. The trend data collection can be set to start or stop based upon the status of up to two selected triggers. The triggers can consist of digital events or analog parameters compared to thresholds.
  • Page 87 Table 87: Programmable Button Access Description Primary Trigger Operator Selects the first parameter to be evaluated. Selection is made from the slot numbers listing on the Common slots screen Master slot numbers list Setting this slot number to 0 disables the primary trigger. Primary Operator Operator Selects the comparator for the primary trigger’s relationship to the primary...
  • Page 88 Common slots screen Figure 58: Common slots screen This screen displays the slot numbers of the commonly monitored parameters. The slot numbers for the remainder of the available parameters are listed on the Master Slot Numbers List that follows. From these lists, select up to six parameters to be trended. Return to the Trend setup screen and enter the parameters Slot Numbers into Data Points 1 through 6.

  • Page 89: Master Slot Numbers List

    Master slot numbers list The master slot numbers list is for use with the trend feature. See Trend setup screen. Table 92: Master slot numbers Slot number Description System Chiller Operating State Coastdown Time Remaining Safety Relay Cycling Relay Warning Relay Operating Hours Run Time (in seconds) Number Of Starts...
  • Page 90 Table 92: Master slot numbers Slot number Description 2054 Condenser Small Temperature Difference 2057 High Pressure Switch 28716 Heating Shutdown Temperature 28718 Heating Delta T 28719 Active Heating Setpoint Subcooling 2059 Sub Cooling Temperature Drop leg refrigerant 2061 Drop Leg Refrigerant Temperature Head pressure control 19108 Head Pressure...
  • Page 91 Table 92: Master slot numbers Slot number Description 8338 VGD Stroke Calibration Command 8355 VGD Fault Code 8353 VGD Actuator Fault 8354 VGD Shutdown Command 17408 Discharge Pressure Variable speed drive 2305 Motor Run 2306 Motor % FLA 3047 VSD Fault 18085 Input % Full Load Amps 2823...
  • Page 92 Table 92: Master slot numbers Slot number Description 3029 Internal Ambient Temperature 1 3030 Internal Ambient Temperature 2 Motor monitoring 3059 Motor Winding Phase A Temp Z1 End 3060 Motor Winding Phase A Temp Z2 End 3061 Motor Winding Phase B Temp Z1 End 3062 Motor Winding Phase B Temp Z2 End 3063...
  • Page 93 Table 92: Master slot numbers Slot number Description 21006 Position Z12 21010 Current V1 21011 Current V2 21012 Current V3 21013 Current V4 21014 Current W1 21015 Current W2 21016 Current W3 21017 Current W4 21018 Current Z1A 21019 Current Z2A 21020 Z1 Temperature 21021...

  • Page 94: Display Messages

    Display messages The status bar of the display contains a status line and, beneath it a details line. The status line contains a message that describes the operating state of the chiller. For example, whether it is stopped, running, starting, or shutting down. The details line displays warning, cycling, safety, start inhibit, and other messages that provide further details of the status bar messages.
  • Page 95 Table 93: Status messages Message Description The chiller is performing a Soft Shutdown. Simultaneously, the Hot Gas Bypass Valve is commanded to 100% open (if Hot Gas Bypass is enabled), the compressor VGD commanded to close rapidly. The motor drive speed is slowed from its initial speed to the minimum required to prevent surge.
  • Page 96 Run messages Table 94: Run messages Message Description The chiller is running, controlling the Leaving Chilled Liquid to the LEAVING CHILLED Leaving Chilled Liquid Temperature Setpoint. Or if the unit is a LIQUID CONTROL Heatpump and the Control Mode is Cooling. The chiller is running, controlling the Leaving Condenser Liquid to LEAVING CONDENSER the Leaving Condenser Liquid Temperature Setpoint.
  • Page 97 MBC startup messages Table 95: MBC startup messages Message Description The chilled liquid or condenser flow switch input is not reading voltage indicating no presence of flow from the flow switch. Indication of flow is WAITING FOR FLOW required during the MBC Startup state to allow transition to chiller run. The OptiView has issued a MBC Levitate command to the MBC and is waiting for confirmation from the MBC that De-levitated mode is OFF, WAITING FOR MBC...
  • Page 98 Table 97: Warning messages Message Description The Evaporator pressure Transducer is indicating a higher pressure than the Condenser pressure Transducer after the chiller has been WARNING – CONDENSER running for 10 minutes. This is indicative of a Condenser or Evaporator OR EVAPORATOR XDCR Transducer failure.
  • Page 99 Table 97: Warning messages Message Description The chiller is running greater than 30 minutes and the Subcooler Effectiveness value decreased less than 0.400 (admin programmable) at any drop leg refrigerant temperature or increased greater than 1.50 (admin programmable) when the drop leg refrigerant temperature WARNING - LOSS OF is at least 0.5 °F (0.27°C) below or any amount above the Entering SUBCOOLER LIQUID...
  • Page 100 Table 97: Warning messages Message Description The chiller motor current is greater than or equal to the Motor Overload current limit. The Motor Overload current limit is predetermined from the motor model and Maximum VSD Output WARNING – MOTOR – Current.
  • Page 101 Table 97: Warning messages Message Description WARNING – UPS This manual reset warning is set when Battery Voltage > 16.0 V. – CHECK BATTERY (Indicates only the UPS output is connected to the battery leads). It is CONNECTION released when Battery Voltage < 16.0 V. This auto reset warning is set when all of the following are true: •...
  • Page 102 Cycling shutdown messages For cycling shutdown messages, the chiller will automatically restart when the cycling condition clears. Table 99: Cycling shutdown messages Message Description The Chilled Liquid Flow Switch has remained open for 5 continuous seconds while the chiller was running, in soft shutdown, or at least 45 CHILLED LIQUID –...
  • Page 103 Table 99: Cycling shutdown messages Message Description The evaporator pressure, as sensed by the Evaporator Transducer, has decreased to the shutdown threshold. For water cooling applications, the shutdown threshold is a fixed value. For Brine cooling applications, the shutdown threshold varies according to the concentration of the Brine solution.
  • Page 104 Table 99: Cycling shutdown messages Message Description The MBC has shutdown the chiller and the control center has not yet received the cause of the fault from the MBC via the serial communications link. The MBC shuts down the chiller by opening the MBC Fault contacts (located on the MBC control board and connected MBC SHUTDOWN –...
  • Page 105 Table 99: Cycling shutdown messages Message Description The MBC has measured shaft displacement is greater than 90 micron from center in the orthogonal radial axis designated V at the opposite- impeller end radial magnetic bearing during Levitation or Rotation MBC – V24 mode over a 7 second window (approximately 2/3 of the air gap LOW FREQUENCY space to the touchdown bearing).
  • Page 106 Table 99: Cycling shutdown messages Message Description The MBC has measured shaft displacement is greater than 100 micron from center in the orthogonal radial axis designated W at the opposite- impeller end radial magnetic bearing during Levitation or Rotation mode (approximately 2/3 of the air gap space to the touchdown MBC –...
  • Page 107 Table 99: Cycling shutdown messages Message Description The Multiunit Cycling contacts connected to I/O Board TB4-9, have opened to initiate a cycling shutdown. If the chiller is running when this MULTIUNIT CYCLING – occurs, the Pre-rotation Vanes are driven fully closed prior to shutting CONTACTS OPEN down the chiller.
  • Page 108 Table 99: Cycling shutdown messages Message Description The variable speed drive contains two temperature sensors, which monitor the unit’s internal ambient temperature. This shutdown is generated when the higher of the two ambient temperatures exceeds a high limit of 158°F (70°C). The unit’s fan(s) and water pump(s) remain energized until the internal temperature drops below 148°F (64°C), VSD –...
  • Page 109 Table 99: Cycling shutdown messages Message Description Upon application of power, all boards go through the initialization process. At this time, memory locations are cleared, program jumper positions are checked and serial communications links are established. If this process is not completed the OptiView panel will indicate this fault.
  • Page 110 Table 99: Cycling shutdown messages Message Description VSD – LOW PHASE C INPUT BASEPLATE VSD – LOW PHASE A INPUT BASEPLATE TEMPERATURE. TEMPERATURE The OptiView panel will determine this fault when the temperature of the motor baseplate phase A has decreased below the low limit of 37°F VSD –...
  • Page 111 Table 99: Cycling shutdown messages Message Description VSD – PHASE C MOTOR VSD – PHASE A MOTOR GATE DRIVER. GATE DRIVER During pre-charge, the DC Bus voltage must exceed the minimum threshold which is determined by Line Voltage Setpoint within 4 seconds after the pre-charge signal has been commanded.
  • Page 112 Table 99: Cycling shutdown messages Message Description The VSD has shutdown the chiller and the control center has not yet received the cause of the fault from the VSD, via the serial communications link. The VSD shuts down the chiller by opening the VSD SHUTDOWN –...
  • Page 113 Table 100: Safety shutdown messages Message Description The condenser pressure exceeded 170 psig for shells with 235 psig DWP and 264 psig for shells with 350 psig DWP while the chiller was stopped. The control determines the shell DWP by the condenser model number on the Sales Order CONDENSER –...
  • Page 114 Table 100: Safety shutdown messages Message Description The evaporator pressure, as sensed by the Evaporator Transducer, has decreased to the shutdown threshold and caused cycling shutdown three times in a 90 minute period. For water cooling applications, the shutdown threshold is a fixed value.
  • Page 115 Table 100: Safety shutdown messages Message Description A possible defective Evaporator pressure Transducer or Refrigerant Temperature Sensor has been detected. The control center converts the evaporator pressure to a Saturated Temperature value and compares this value to the optional Evaporator Refrigerant Temperature Sensor. If the difference between these temperatures is greater than 3.0°F (5.4°C), continuously for 1 min, this shutdown is performed.
  • Page 116 Table 100: Safety shutdown messages Message Description This Safety Shutdown is set when the MBC determines a lapse in internal microprocessor activity on the Amplifier Board through its Watchdog device. The MBC Fault contacts open. The MBC will not react to a levitation mode MBC –...
  • Page 117 Table 100: Safety shutdown messages Message Description This Safety Shutdown is set when OptiView software is commanding MBC Levitation Mode ON but the MBC is not reporting Levitated within 15 seconds. MBC – NO This fault is prohibited when the MBC Alive input is not high, indicating the MBC LEVITATION unavailable.
  • Page 118 Table 100: Safety shutdown messages Message Description This Safety Shutdown is set when the panel boots up after a power loss has occurred and the buffer data prior to the shutdown showed motor speed > 0, indicating the motor was rotating when the UPS power was lost. If the Power Fail Landing Counter on the MBC Details Screen is <...
  • Page 119 Table 100: Safety shutdown messages Message Description This Safety Shutdown is set when the MBC is commanded to Rotation mode while it is not indicating acceptable to rotate. The MBC Fault contacts open. MBC – SPV The MBC remains in Levitation mode with the motor shaft levitated until UNAUTHORIZED commanded to de-levitate over serial comms.
  • Page 120 Table 100: Safety shutdown messages Message Description This safety shutdown is set when the Compressor Model field entered on the Sales Order screen does not conform to the format expected. The format is defined below and the data can be found on the compressor nameplate if it ever needs re-entry in the control: SS/LS SS/LS...
  • Page 121 Table 100: Safety shutdown messages Message Description The Microboard’s software Watchdog initiated a Microprocessor reset because it detected that a portion of the chiller operating program was not being WATCHDOG executed. The result of this reset is a Safety shutdown and re-initialization of the –...
  • Page 122 Table 100: Safety shutdown messages Message Description If the unit fails to complete pre-regulation (due to VSD – DC BUS PRE- REGULATION fault), it shall have to repeat pre-charge in order to attempt another pre-regulation. The VSD shall wait 10 seconds before clearing the DC VSD –...
  • Page 123 Table 100: Safety shutdown messages Message Description The motor/inverter IGBT module temperatures are continuously monitored by the gate driver board where the highest temperature for each phase is read. The highest temperature is sent to the VSD logic board where the temperature is compared against a threshold value.
  • Page 124 Table 100: Safety shutdown messages Message Description The input current overload value is variable based on the Input Job Full Load Amps value programmed at the Control Panel. The input current overload value is 1.16 times the Input Job Full Load Amps value, but not to exceed the value for the given model of drive listed in the following table.
  • Page 125 Table 100: Safety shutdown messages Message Description Each phase of motor current is compared against the average of the three phases of motor current to determine the current imbalance value. If the current imbalance value is greater than 32 amps for a period of 45 seconds, then this shutdown is generated.
  • Page 126 Table 100: Safety shutdown messages Message Description The motor current in each phase of the VSD is measured at the beginning of the run command. The motor current at this time should measure very low. This low value will be used as the zero current value for the rest of this run time. VSD –...

  • Page 127: Vsd Operation

    VSD operation OptiSpeed compressor drive overview The new YORK OptiSpeed Compressor Drive (OSCD) is specifically designed for the application of ® driving a permanent magnet high speed motor with magnetic bearings used on the YORK Model Centrifugal Liquid Chiller. This type of design allows the chiller to be designed as a complete system, and take full advantage of the strengths of each major component within the system.

  • Page 128: Smart Sensor System

    The OSCD can now be configured for many different input voltage levels. Lower input voltages may de-rate the input power rating of the OSCD, but the OSCD produces the same output voltage and uses the same motor. The Harmonic filter is no longer an option, and the function of the Harmonic filter is included in a new rectifier module.
  • Page 129 The following figures show the black flip dot and the red flip dot in the circled area. Figure 59: Black flip dot Figure 60: Red flip dot WARNING A tripped circuit breaker is an indication of a serious fault condition, and must never be reset without an inspection of the drive by a certified technician.
  • Page 130 OptiSpeed compressor drive details (0490 and 0774 amp drives) An electronic circuit breaker or disconnect switch connects the three phase input power to input fuses and then onto the AC line inductor, and input filter. See Figure 61. Three-phase power continues onto the rectifier power modules to the bus capacitor to the inverter, then onto the output filter and the compressor motor.
  • Page 131 the current is limited by the precharge resistors. This 12 s period is called the precharge time. After 12 s has passed, a small relay closes, and cause the supply contactor to close. Shortly, after this time the precharge contactor opens. The drive is now precharged and ready to run. All of the precharge faults remain the same as when the auxiliary power device is used to precharge the drive.
  • Page 132 Figure 61: Left side of drive cabinet (typical for most of the drive models) Note: Variable speed drive model HYP0774 shown. Callout Description Callout Description Line voltage isolation board Voltage transient board Cooling fans Input power fuses Circuit breaker or disconnect switch Mod B with OptiView Control Center...
  • Page 133 Figure 62: Left side of 1278A amp drive cabinet Callout Description Callout Description Cooling fans Drive logic board Cooling coil Line voltage isolation board Circuit breaker Voltage transient board Input power fuses Mod B with OptiView Control Center...
  • Page 134 Figure 63: Right side of drive cabinet HYP0490 Callout Description Callout Description Power unit Output inductor Drive logic board Input filter Note: The power unit includes 3 phrases for the rectifier and the inverter. Mod B with OptiView Control Center...
  • Page 135 Figure 64: Right side of drive cabinet HYP0490A Callout Description Callout Description Power unit Output capacitor assembly Drive logic board Line inductor Output inductor Note: The power unit includes 3 phrases for the rectifier and the inverter. Mod B with OptiView Control Center...
  • Page 136 Figure 65: Right side of drive cabinet HYP0612A Callout Description Callout Description Power unit Output inductor Drive logic board Note: The power unit includes 3 phrases for the rectifier and the inverter. Mod B with OptiView Control Center...
  • Page 137 Figure 66: Right side of drive cabinet HYP0730A Callout Description Callout Description Power unit Output inductor Drive logic board Note: The power unit includes 3 phrases for the rectifier and the inverter. Mod B with OptiView Control Center...
  • Page 138 Figure 67: Right side of drive cabinet HYP0774 Callout Description Callout Description Phase A power unit Drive logic board Phase B power unit Output inductor Phase C power unit Input line inductor Mod B with OptiView Control Center...
  • Page 139 Figure 68: Center and right section of drive cabinet HYP1278A Callout Description Callout Description Phase A power unit Output capacitor assembly Phase B power unit Supply contactor Phase C power unit Mod B with OptiView Control Center...
  • Page 140 Figure 69: Drive logic board Figure 70: Rectifier side of the power unit HYP0490, HYP0490A, HYP0612A, and HYP0730A Mod B with OptiView Control Center...
  • Page 141 Figure 71: Rectifier side of the power unit HYP0774 and HYP1278A Mod B with OptiView Control Center...
  • Page 142 Figure 72: Smart sensor system components location (shown on HYP0490, other models are similar) Callout Description Smart sensor board mounted behind door rail Smart sensors Note: Model HYP1278A has two additional sensors located to the right of the fan upper assembly.
  • Page 143 In April of 2016 the control for the fans and pumps was changed so that they would continue to run 2 minutes after the stop command. This change occurred in software version C.HYP.03.04.01, and C.HYP.04.04.01. During normal chiller run conditions the control panel provides a speed command to the OSCD. The speed command must take into account minimum speed command from the anti-surge control, and the speed required by the leaving chilled liquid temperature control.

  • Page 144: Maintenance

    3. More frequent service may be required depending on local operating conditions. For operating and maintenance requirements listed above, refer to appropriate service literature, or contact your local Johnson Controls Service Office. Mod B with OptiView Control Center...

  • Page 145: Renewal Parts

    Important: If a unit failure occurs due to incorrect maintenance during the warranty period; Johnson Controls will not be liable for costs incurred to return the system to satisfactory operation. Electrical isolation Isolate electrical power supply to the chiller from the facility Isolate the Power Panel battery from the Uninterrupted Power Supply by opening the Power Panel disconnect switch.

  • Page 146: Checking The System For Leaks

    • Verify that the evaporator and condenser water flows are within rated limits. • Check the operation of the motor starter. Monitor at unit start-up for any abnormalities. Annually (or more often if necessary) For the evaporator and condenser, perform the following inspections: a.
  • Page 147 WARNING Take care not to exceed the rated pressure of the unit refrigerant pressure relief valves. Conducting the gas pressure hold test Install a high-quality high-resolution analog pressure gauge on one of the shells to monitor the system pressure over time. Ensure that the pressure gauge has a resolution of 2 psi increments with a dial face at 3 in.
  • Page 148 Figure 73: Leak test hold time Conducting the optional trace gas leak test Install a high-quality high-resolution analog pressure gauge on one of the shells to monitor the system pressure over time. Ensure that the pressure gauge has a resolution of 2 psi increments with a dial face at 3 in.

  • Page 149: System Evacuation

    It is important that a suitable gas detection device is used that can detect the trace gas that is selected. Set the gas detection limit for 10% R-134a based trace gas to 0.078 Oz/Yr R-143a. Add dry nitrogen to the chiller until the pressure reaches 100 psig (690 kPa). To ensure that the concentration of trace gas has reached all parts of the system, slightly open the oil sump drain service valve and test for the presence of the trace gas with a leak detector.
  • Page 150 WARNING If you apply too deep of a vacuum, any trapped moisture might freeze and might not be exhausted as vapor. Failure to remove all of the moisture can create acids in the refrigerant circuit. This may damage internal system components over time causing premature failures of items such as oil pump motors and any other devices sensitive to acid contact.
  • Page 151 Table 102: System pressures Gauge Absolute Boiling temperatures of Inches of mercury (Hg) below Millimeters of mercury water (°F) psia Microns one standard atmosphere (in.) (Hg) 29.882 0.019 1,000 29.901 0.010 –11 29.917 0.002 –38 29.919 0.001 0.05 –50 29.9206 0.0002 0.01 –70...
  • Page 152 5,000 μm. Because vacuum pumps have the capacity to overcome the boiling rate of the trapped moisture, do not go below this pressure at this point. Figure 75: Saturation curve When this point is reached, practically all of the air has been evacuated from the system, but there is still a small amount of moisture left.

  • Page 153: Refrigerant Charging

    6. To determine if it is moisture or a leak, a pressure rise test must be conducted. Evacuate the system to 5,000 μm again and perform another hold test. If the pressure rise goes to 0 psig, that indicates that a leak is present. During the hold period, if moisture is present, the pressure stabilizes at some level below atmosphere and should correspond to the room ambient temperature or the heat being applied to the vessel.
  • Page 154 temperature of the refrigerant recorded in the container indicates that the gas pressure aligns correctly with the corresponding temperature. See Table 103 Table 104. You must only admit refrigerant vapor from the top of the drum or cylinder to the system until the system pressure is raised above the corresponding saturation pressure at the highest freezing point of the chiller liquids.
  • Page 155 Table 103: R-134a pressure to saturated temperature conversion Pressure Dew point Pressure Dew point Pressure Dew point psig (bar) temperature psig (bar) temperature psig (bar) temperature ºF (ºC) ºF (ºC) ºF (ºC) 85.0 (5.86) 79.0 (26.1) 220.0 (15.17) 137.1 (58.4) 355.0 (24.48) 173.3 (78.5) 90.0 (6.21)

  • Page 156: Compressor And Motor Maintenance

    FOF. For older units where they are not seen on the FOF, they would be provided upon request from the chillers sales engineer from the chiller rating program. These depend on tube selection, chilled fluid type, operating head, and operating condition. The following equations define these parameters.

  • Page 157: Condensers And Evaporator Maintenance

    Table 105: Approximate refrigerant and water weight Evaporator Condenser Refrigerant weight, lb (kg) Water weight, lb CB2110 540 (250) 980 (450) EB2510 CB2510 600 (270) 1310 (600) EB2514 CB2514 840 (380) 1680 (770) CB2510 640 (290) 1510 (690) EB2910 CB2910 860 (390) 1760 (800) CB2514...
  • Page 158 Chemical water treatment Since the mineral content of the water circulated through evaporators and condensers varies with almost every source of supply, it is possible that the water being used may corrode the tubes or deposit heat resistant scale in them. Reliable water treatment companies are available in most larger cities to supply a water treating process which will greatly reduce the corrosive and scale forming properties of almost any type of water.
  • Page 159 In many major cities, commercial organizations now offer a specialized service of acid cleaning evaporators and condensers. If acid cleaning is required, Johnson Controls recommends the use of this type of organization. The Dow Industries Service Division of the Dow Chemical Company, Tulsa, Oklahoma, with branches in principal cities is one of the most reliable of these companies.

  • Page 160: Electrical Controls

    Ensure electrical connections are tight and connectors are secure annually. It is important that the factory settings of controls (operation and safety) not be changed. If the settings are changed without Johnson Controls approval, the warranty will be jeopardized. Automatic battery health test during shutdown For periodic maintenance or to diagnose battery faults or warnings, a battery health test can be performed.
  • Page 161 The following constitute a fail result: If the Battery Voltage drops to less than the Inverter Low Battery Voltage Threshold (default 11.0 V) (UPS – Inverter Low Battery Voltage fault threshold), the test fails and ends. If the test takes longer than 75 seconds, the test fails and ends. If the UPS shuts down (OptiView loses power) due to voltage, fuses, disconnect, or any other reason, the test fails and the OptiView displays a fault on next power up stating that the battery health test has failed.

  • Page 162: Printing

    Printing Printing overview A printer can be connected to the Control Center’s Microboard to print the following reports. The screen from which each report can be generated is listed in parenthesis. • Status - Present system parameters (Printer, Home) • Setpoints - Present programmed values of all setpoints (Printer, Setpoints) •...
  • Page 163 2. The primary differences between printers involve the formatting control codes required by the printer. These codes are sent from the Control Center to the printer. For example, Weigh-Tronix printers require a control code to select 40 column width. This same code is interpreted by the OKI Data printer as an instruction to print wide characters.
  • Page 164 Setting up the printer The selected printer must be configured as follows. Refer to the manual provided by the printer manufacturer. OKI Data OKIPOS 441 With the printer power off, remove the two screws that hold the RS232 Interface Module. Pull the RS232 Interface Module out of the printer.

  • Page 165: Control Center Setup

    Control center setup Chiller ID Access level required: operator Using the COMMS Screen, assign an identification number to the chiller. This number will appear atthe top of each report. Printer setup Access level required: operator Using the COMMS Screen, the Control Center must be configured to transmit data in the same format as the printer is configured to receive the data.
  • Page 166 Set up HyperTerminal as follows: a. Go to the Start menu. b. Click All Programs. c. Click Accessories. d. Click Communications. e. Click HyperTerminal. f. In the dialog box, enter a descriptive name and select an icon for the connection. Click OK. g.
  • Page 167 Table 111: RS-232 pin assignments (DB9 PC signal set) for most laptops Description Pin 5 Signal ground Pin 6 Data set ready Pin 7 Request to send Pin 8 Clear to send Pin 9 Ring indicator Figure 78: Communications block diagram A serial cable to go from the OptiView Control Panel to the serial port is available from the parts center (P/N 375-90490-231).
  • Page 168 Table 112: Connections Signal Color Position 2 Black Position 3 Position 4 White Position 5 Green Mod B with OptiView Control Center...
  • Page 169 Figure 80: Sample printout, status or history Mod B with OptiView Control Center...
  • Page 170 Figure 81: Sample printout, status or history, continued Mod B with OptiView Control Center...
  • Page 171 Figure 82: Sample printout (setpoints) Mod B with OptiView Control Center...
  • Page 172 Figure 83: Sample printout (setpoints), continued Mod B with OptiView Control Center...
  • Page 173 Figure 84: Sample printout (schedule) Mod B with OptiView Control Center...
  • Page 174 Figure 85: Sample printout (sales order) Mod B with OptiView Control Center...
  • Page 175 Figure 86: Sample printout (security log report) Mod B with OptiView Control Center...
  • Page 176 Figure 87: Sample printout (trend data new or existing points) Figure 88: Sample printout (custom screen report) Mod B with OptiView Control Center...

  • Page 177: Unit Conversion

    Unit conversion The following factors can be used to convert from imperial to the most common SI metric values. Table 113: SI metric conversion Measurement Multiply imperial unit By factor To obtain metric unit Capacity Tons refrigerant effect (ton) 3.516 Kilowatts (kW) Power Horsepower (hp)
  • Page 178 © 2024 Johnson Controls. 5000 Renaissance Drive, New Freedom, York, PA 17349, USA. Subject to change without notice. All rights reserved.

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