Dometic PGD1 Installation And Operation Instructions Manual
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Dometic PGD1 Installation And Operation Instructions Manual

Marine control units for varc models
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MARINE
CONTROL UNITS
VARC MODELS
VARC Chiller Controls
EN
Installation and Operation Instructions . . . .2
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
L-3499 | Form No. 338208 20200323 | ©2020 Dometic Corporation

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Summary of Contents for Dometic PGD1

  • Page 1 MARINE CONTROL UNITS VARC MODELS VARC Chiller Controls Installation and Operation Instructions ..2 WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov L-3499 | Form No. 338208 20200323 | ©2020 Dometic Corporation...

  • Page 2: Table Of Contents

    8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 40 Visit: www.dometic.com Alarms .

  • Page 3: Supplemental Directives

    This completely variable capacity chiller uses serious injury: an inverter to modulate the speed of the compressor to • Use only Dometic replacement parts and achieve the desired chilled water setpoint. This allows components that are specifically approved for use the compressor to run at a minimum speed of 30 Hz to a with the appliance.
  • Page 4 2 .1 .2 VARC Control Application 2 .1 .3 PGD1 LCD Display The built-in VARC control application supports the The PGD1 provides an LCD display and six buttons for following features: navigating the control software. • Selection and sequencing of up to six chillers •...
  • Page 5 VARC Chiller Controls General Information 2 .1 .5 LCD Buttons 2 .1 .6 Touch Screen The buttons on the PGD1 and PLDPRO operate as This section describes the navigation buttons on the described in the following table: Main screen. Button...

  • Page 6: Inputs And Outputs

    It requires the medium-sized PLC, instead of the standard smaller version. With this (Optional) AI-10 option, you can view the current draw from each pump on the PGD1 display and the touch (SW) screen. The VARC has a proprietary algorithm that keeps the system from turning off immediately for low pressure or high pressure. The VARC gradually reduces its speed...
  • Page 7 VARC Chiller Controls General Information 2 .2 .2 Digital Inputs Digital inputs are used to monitor the status of the VARC protection circuits. At powerup, all discrete inputs are checked before the system is enabled. Any faults detected on startup must be verified and cleared via the VARC before the system will start normal operation.

  • Page 8: Default Parameters

    General Information VARC Chiller Controls Output I/O # Board I/O Description Electric Heat (EH) DO-4 Provides switched power to the contactor coils for electric heat. Not used. DO-5 This output is not used. Not used. DO-6 This output is not used. Fault Alarm DO-7 NO7/NC7...
  • Page 9 CCW Supply CCW Supply CCW Supply Number of Stages Electric Heat Power Cycle Retain Mode Retain Mode Retain Mode Retain Mode Logo Dometic BLK Dometic BLK Dometic BLK Dometic BLK Background Ocean Ocean Ocean Ocean Flow Switch High Pressure Switch...
  • Page 10 General Information VARC Chiller Controls Parameter VARCX48 VARCX60 VARCX72 VARCX120 Data Type Condenser Frost Protection Cond Setpoint Degrees F Cond Band Degrees F Comp Speed Compressor PID Cntrl Chilled Water High Temperature Limit Alarm Setpoint Degrees F Off Band (SP-) Degrees F Retries Retry Timeout...
  • Page 11 VARC Chiller Controls General Information Parameter VARCX48 VARCX60 VARCX72 VARCX120 Data Type Inverter Alarm Retry Retry Timeout Minutes Retry Delay Seconds Configuration Menu Temperature Units Degrees F Degrees F Degrees F Degrees F Pressure Units...

  • Page 12: Intended Use

    Width 7.36 in. (187 mm) Depth 1.77 in. (45 mm) Dometic Corporation reserves the right to modify Increase breaker size to include pump current if running pumps directly appearances and specifications without notice. from the system. Setpoint Ranges...

  • Page 13: Installation And Setup

    VARC Chiller Controls General Information 5 Installation and Setup The VARC can be installed as a stand-alone chiller or as part of a staged system. The factory default setting is as a stand-alone chiller. 337430 Installation for a staged system requires the following steps: 1.

  • Page 14: Multi-Stage Wiring

    General Information VARC Chiller Controls 5 Electrical Connections VARC 60/72 5 .2 Multi-stage Wiring The following diagram shows how to wire multiple VARC stages. Remote PLC Display Touch Screen (optional) (Optional) Modbus Comm 3 Wire 3 Wire Communication 24VAC/DC Cables (one per stage) Pump Outputs from VARC Stage 1 CW L1 VARC...

  • Page 15: Touch Screen Connection

    VARC Chiller Controls General Information 5 .4 Firmware Verification WARNING: ELECTRICAL SHOCK HAZARD . Verify that all units’ power lines are in unison Chillers should come from the factory with the correct phasing, in order to eliminate the potential for a firmware preloaded.

  • Page 16: Networking

    Verify that all stages have the same version number. In the unlikely event that there is a difference between stages, the PCB firmware must be updated by a Dometic-approved technician. 5 .5 Networking 7. Press Enter, then change address to 2 for chiller 2, 3 When setting up the stages for networking, ensure that for chiller 3, and so forth.

  • Page 17: Configuring Display Addresses

    1. Display the configuration screen: a. Press enter once to enter the address of Trm1, and a. PGD1: Press and hold the Up, Enter, and Down then scroll up or down to select the appropriate buttons simultaneously for 6 seconds.

  • Page 18: Varc Standard Wiring Diagram

    General Information VARC Chiller Controls 5 .7 VARC Standard Wiring Diagram The following diagrams show the component connections for the standard VARC 48 and VARC 72. The VARC 60 is not shown. Display Splitter Field Wiring (Under Top Cover) To Remote Display Optional Wiring Display Splitter Power Speed...

  • Page 19: Operation

    VARC Chiller Controls Operation 6 Operation • A stage has a minimum run time of 60 seconds before it can be turned off and a minimum off time of 10 The VARC provides many operational features to seconds before it can be re-enabled. This minimum conserve energy, improve performance, and provide on time is required to ensure that the system is not system control.
  • Page 20 Operation VARC Chiller Controls 6 .1 .2 Pump Operation • If setpoint is reached, the compressor reduces its speed to maintain the water temperature. Once it has The pump modes adjust as required by the system reached temperature and a hysteresis of one degree, operating mode.

  • Page 21: Powerup And Startup

    VARC Chiller Controls Operation 6 .1 .4 Maintenance 6 .2 .3 Compressor Startup Maintenance mode is available for troubleshooting. See The VARC utilizes a BLDC compressor that is capable “Maintenance Mode” on page 39. of operating at a very high frequency which requires that the compressor have a ramped startup to establish 6 .2 Powerup and Startup proper lubrication so as to not damage the compressor.
  • Page 22 Operation VARC Chiller Controls Figure 10 shows the controls on the Chiller Enable • Chilled Water Pump and Sea Water Pump: screen. Tapping this area takes you to the Pump Status screen. • Econo Mode Button: Tapping this button displays the Econo Mode screen, which allows you to select Normal or Econo Mode.
  • Page 23 VARC Chiller Controls Operation 6 .3 .3 Viewing Chiller Status for Each Depending on installed options, different icons appear as hotspots for navigation to open another Stage window. When the system is in run mode, additional The Chiller Summary screen provides chiller status for all icons appear to indicate cooling and heating.
  • Page 24 Operation VARC Chiller Controls 17 Active Alarm Screen 15 Chiller Trends Screen 4. To change the time frame, select a time from the menu. 3. To download performance data, insert a USB drive into the USB port on the VARC, and then tap the USB button.

  • Page 25: Operating The Lcd Screen

    22 MobileVNC Settings Advanced Tab 6 .4 Operating the LCD Screen The following LCD instructions refer to the PGD1 display. For the PLDPRO display, use the corresponding buttons. See “PLDPRO LCD Display” on page 4. 20 Enable Remote Support Screen 6 .4 .1 Understanding the Display Screens...
  • Page 26 Operation VARC Chiller Controls The screens following the main screen contain information for each stage. 1. The first screen displays the CW Supply and CW Return temperatures, flow switch status (Fl) and high pressure status. 5. The final screen displays an image of the refrigerant circuit and showing the valve position.
  • Page 27 VARC Chiller Controls Operation 6 .4 .3 Enabling Electric Heat 7. Press Enter to save. 1. Press the Program button. See “LCD Buttons” on page 5. 6 .4 .4 Setting Time and Date 1. Press the Program button. See “LCD Buttons” on 2.
  • Page 28 Operation VARC Chiller Controls 7. Use the Scroll Up and Scroll Down buttons to select 4. After selecting the desired option, press Enter to the correct hour, then select the minute. return the cursor to the top of the screen. 5.
  • Page 29 VARC Chiller Controls Operation 6 .4 .7 LCD Screen Menu Maps The following diagrams show the menu options for each screen available through the LCD displays. The Main screen is displayed at powerup. It displays the essential system information. An asterisk (*) indicates an option that is available only when activated in the factory settings.
  • Page 30 Operation VARC Chiller Controls The Program menu provides access to user settings, the Factory screen, and the Technician screen. Setpoints Program Heating Temperature ##.# °F Setpoints Cooling Temperature ##.# °F Clock/Scheduler Electric Heat* Input/Output ##°F Alarm History Stg Up Stg Down Board Switch 1 SP - #°F 1 SP + #°F...
  • Page 31 VARC Chiller Controls Operation The Technician menu requires the technician password (3156). Information Commission Service Contact Phone ###-###-#### Enter contact info Version & Date #.## ##/##/## Name #### BIOS & Date #.## ##/##/## Telephone No. ###-###-#### Boot & Date #.## ##/##/## Update info? Yes/No...
  • Page 32 Operation VARC Chiller Controls Control Loops Working Hour Set Superheat Setpoint Set Pt Rst to 0? Run H rs Cool Setpoint ##°F Compressor #### h Yes/No #### h Heat Setpoint ##°F Electric Heat* #### h Yes/No #### h Thermoregulator Chilled Water Pump #### h Yes/No #### h...
  • Page 33 VARC Chiller Controls Operation The Factory menu requires the factory password, which is available only to authorized Dometic personnel. Factory Configuration Temperature Units °F/°C Configuration I/O Configuration I/O Configuration Pressure Units psi/bar See Figure 32 Factory Settings Force clock enable...
  • Page 34 Operation VARC Chiller Controls In the following diagram, the dotted boxes indicate a breakout of the additional information that is contained below that menu category. Factory Settings Compressor Varc Type None/Varc48/ Econo mode SW Yes/No 60/72/96 Minimum On ## s Compressor Scroll to select Minimum Off...
  • Page 35 VARC Chiller Controls Operation Configuration Valve Select Type Main Regulation Select Type Auxiliary Regulation Select Type Probe Configuration Probe S1 Probe S2 Probe S3 Probe S4 Alarm Enable/Disable Enable/Disable Enable/Disable Enable/Disable Type Select Select Select Select Minimum #.# barg #.# barg Maximum #.# barg #.# barg...
  • Page 36 Operation VARC Chiller Controls Power + n1 Custom Configuration Motor Poles # Regulation Motor Control Mode PM Motor/AC Motor Vector/AC Motor Custom Motor base freq. ###.# Hz Motor base vol. ### Vrms Motor rated current ##.# Arms Motor power factor Out current maximum #.#% Regulation Speed profile...
  • Page 37 VARC Chiller Controls Operation In the following diagram, the dotted boxes indicate a breakout of the additional information that is contained below that menu category. An asterisk (*) indicates an option that is available only when activated in the factory settings. Regulation Output frequency min #.# Hz...
  • Page 38 Operation VARC Chiller Controls I/O Configuration Analog Inputs Analog Inputs Digital Inputs Enable Relay Outputs CW Return CW Supply SW Inlet Analog Outputs On/Off On/Off On/Off Channel B001 B002 B003 Normal/High Res. Normal/High Res. Normal/High Res. Input Type Select/(On/Off) Select/(On/Off) Select/(On/Off) On/Off...

  • Page 39: Maintenance Mode

    VARC Chiller Controls Maintenance Mode 7 Maintenance Mode 4. Enter the service password: 3156. In Maintenance mode you can disable any of the stages in the system. This allows for ease of troubleshooting and maintenance on one unit, while maintaining full functionality for the other stages.

  • Page 40: Troubleshooting

    Troubleshooting VARC Chiller Controls 8 Troubleshooting 2. Tap the wrench icon. The following tables describe the VARC alarm characteristics and corrective actions. WARNING: ELECTRICAL SHOCK HAZARD . Failure to obey the following warnings could result in death or serious injury: •...
  • Page 41 VARC Chiller Controls Troubleshooting Alarm Alarm Reset Delay System Action Corrective Actions Relay Alarms Power+ n˚1 Manual Immediate Turns off compressor • Check the load. None • Check the network control 1:Overcurrent devices and cables. 2:Motor Overload • Check the input voltage. 3:Overvoltage 4:Undervoltage •...
  • Page 42 Troubleshooting VARC Chiller Controls Alarm Alarm Reset Delay System Action Corrective Actions Relay Chilled Water Supply Manual Immediate Turns off VARC • Check the sensor for shorts Sensor Failure and opens. • Compare the temperature reading with the digital thermometer. Clock Board Fault or Automatic Immediate...
  • Page 43 VARC Chiller Controls Troubleshooting Alarm Alarm Reset Delay System Action Corrective Actions Relay High Discharge After 3 retries Immediate Turns off VARC • Check for the proper Pressure every 30 mins, refrigerant pressure with the must be reset gauge. If normal, check for a manually defective pressure switch.

  • Page 44: Envelope Zone Status Descriptions

    IF YOU HAVE QUESTIONS, OR TO OBTAIN A COPY provides details. OF THE LIMITED WARRANTY FREE OF CHARGE, CONTACT: Zone Name Description DOMETIC CORPORATION Inside envelope Working point inside limits MARINE CUSTOMER SUPPORT CENTER zone 2000 NORTH ANDREWS AVENUE High compression Low gas density ->...
  • Page 45 VARC Chiller Controls...
  • Page 46 VARC Chiller Controls...
  • Page 47 VARC Chiller Controls...
  • Page 48 YOUR LOCAL YOUR LOCAL DEALER SUPPORT SALES OFFICE dometic .com/dealer dometic .com/contact dometic .com/sales-offices A complete list of Dometic companies, which comprise the Dometic Group, can be found in the public filings of: DOMETIC GROUP AB Hemvärnsgatan 15 SE-17154 Solna Sweden...

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