Maritime Geothermal WH-Series Installation And Service Manual
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Maritime Geothermal WH-Series Installation And Service Manual

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Installation and Service Manual
WH-Series
Single Stage R134a
Model Sizes 25-80
Liquid to Water Heat Pump
Maritime Geothermal Ltd.
Email: info@nordicghp.com
P.O. Box 2555
Web: www.nordicghp.com
Petitcodiac, N.B.
E4Z 6H4
Document Number: 002028MAN-01
Ph. (506) 756-8135
DATE : 1-Oct-2015
1-Oct-2015
Page 1
002028MAN-01

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  • Page 1 Installation and Service Manual WH-Series Single Stage R134a Model Sizes 25-80 Liquid to Water Heat Pump Maritime Geothermal Ltd. Email: info@nordicghp.com P.O. Box 2555 Web: www.nordicghp.com Petitcodiac, N.B. E4Z 6H4 Document Number: 002028MAN-01 Ph. (506) 756-8135 DATE : 1-Oct-2015 1-Oct-2015...

  • Page 2: Safety Precautions

    SAFETY PRECAUTIONS WARNING: Ensure all access panels are in place and properly secured before applying power to the unit. Failure to do so may cause risk of electrical shock. WARNING: Before performing service or maintenance on the heat pump system, ensure all power sources are DISCONNECTED.
  • Page 3 APPLICATION TABLE SIZE FUNCTION REFRIGER- VOLTAGE COMPRESSOR OUTDOOR INDOOR REVISIONS COIL COIL Maritime Geothermal Ltd. has a continuous improvement policy and reserves the right to modify specification data at any time without prior notice . 1-Oct-2015 Page 3 002028MAN-01...

  • Page 4: Table Of Contents

    Table of Contents TABLES, DIAGRAMS & DRAWINGS: ……..……...………….……………………………………………………………… PAGE 6 INSTALLATION INFORMATION: …………………...………….……………………………………………………………… PAGE 7 Unit description: …………………………………………………………………………………………………..…... Page 7 Unpacking the unit: …………………………………………………………………………………………………... Page 7 Optimum Placement: ………...………………………………………………………………………………………. Page 7 Electrical Provisions: ………………………………………………………………………………………………… Page 7 Control Transformer : ……..…………………...………………………..…………………………………………… Page 7 Circulator Pump Module Wiring : ..……………………………………………………...………………………….
  • Page 5 continued Table of Contents— APPENDIX B: PC Application Installation: …………………………………………………………………………………. PAGE 75 APPENDIX C: USB Driver Installer Setup: ………………………………………………………………………………….. PAGE 76 WARRANTY INFORMATION: ………………………………………………………………………………………………….. PAGE 77 1-Oct-2015 Page 5 002028MAN-01...

  • Page 6: Tables, Diagrams & Drawings

    001936SCH-01 - WH-**-H-4S-** Schematic Diagram: ……………..……….…………..…………………..…… Page 64 001937ELB-01 - WH-**-H-4S-** Electrical Box Diagram: ….………………….………………..………………. Page 65 001938SCH-01 - WH-**-H-5S-** Schematic Diagram: ……………..……….…………..…………………..…… Page 66 001939ELB-01 - WH-**-H-5S-** Electrical Box Diagram: ….………………….………………..………………. Page 67 001877RCD –WH-Series Refrigeration Circuit Diagram: ……………………...….…………………………… Page 68 002028MAN-01 Page 6 1-Oct-2015...

  • Page 7: Installation Information

    The connections to the heat pump MUST CON- The 50°F requirement means that the WH-series may use FORM TO LOCAL CODES. a water well or ground loop source only in suitably warm cli- mates.

  • Page 8: Circulator Pump Module Wiring

    CIRCULATOR PUMP MODULE WIRING TABLE 3 - Aquastat Connections (GROUND LOOP ONLY) Signal Description The heat pump has provisions for connecting the circulator 24VAC common (ground) pump module so that the pumps will be turned on whenever the 24VAC hot compressor operates.
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  • Page 10: Sizing And Hydronic Information

    Sizing and Hydronic Information HEAT PUMP SIZING HYDRONIC SYSTEMS - GENERAL TABLE 5 depicts a rough guideline as to the size of home Hydronic systems typically provide heat through two differ- each heat pump size can handle. ent types of media: ...
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  • Page 14: Ground Water System Information

    IMPORTANT NOTE: The 50°F temperature require- on the lines when the heat pump is operating. However in some ment means the WH-series may use a water well cases a well can supply a heat pump only if the minimum source only in suitably warm climates.
  • Page 15 A return well should be a minimum of 80 ft. from the supply off and the water valve closes. When snow comes it will usually well for residential applications. The water returned to the well cover the entire process much like a small spring. It is recom- will not necessarily be pumped into the same aquifer, depend- mended that the pipe be below the frost line when possible for ing on underground conditions.
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  • Page 17: Ground Loop System Information

    This is different from standard geother- mal heat pumps which use R410a refrigerant. IMPORTANT NOTE: The 50°F temperature require- ment means the WH-series may use a ground loop source only in suitably warm climates. Remember that WH units are heating-only, so only extract heat from (never reject heat to) the ground loop.

  • Page 18: Antifreeze Solution

    You will be able to visibly tell when all air is removed. ANTIFREEZE SOLUTION Since the WH-series requires a minimum ELT of 50°F, a ground loop should not be used as a source if there is any expectation that the loop will fall below this temperature, even after prolonged operation.
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  • Page 20: Pc Application (Pc App)

    PC Application (PC APP) NOTE: Before using the PC Application refer to Appendices B and C for installation instructions for the PC Application and USB driver for the com port. Both must be installed in order to run the PC APP and communicate with the control board. Connect a USB cable between the PC and the control board USB connector located at the bottom center of the board.
  • Page 21 View Menu: This menu handles all of the operational viewing screens. Clicking on the View submenus will open the page in the PC APP’s frame. The next few pages of the manual show screenshots of each of the pages along with some descriptions of what is on each page.
  • Page 22 View—Alarms: The alarms page has three tabs, the first shows the current alarm status, number of alarms, high and low refrigeration alarm cutout values as well as the short cycle timer. The second tab shows a list of alarms that have occurred since the PC APP has been operating (this will be lost when the PC is disconnected from the controller board.) The third tab is a list of board hardware faults.
  • Page 23 Operation Mode Indicator Master Alarm occurs when any alarm occurs. This button will erase all alarms and alarm counters, including a permanent alarm. Low Pressure Cutout. High Pressure Cutout. Greyed out alarms are not applicable to the system. Short Cycle Timer counts This button will reduce the down time until the next com- short cycle timer value to 9...
  • Page 24 BOARD FAULTS Tab: This tab shows hardware faults that could occur. If one of these faults occurs there may be a problem with the control board hardware or with the LCD Display and buttons. NOTE: If a Board Fault occurs, try cycling the power to the heat pump. Turn the power off for 10 seconds and then back on again.
  • Page 25 View—Setpoint Control : Shows the on-board aquastat control screen. This screen is only available when Control Source HYD on the Configuration Page is set to Setpoints. This screen is described in detail in the Setpoint Control section of the manual. The screens below show a two-stage model on the left and a single stage model on the right.
  • Page 26 View—Digital Inputs: Shows the digital inputs and their individ- View—Digital Outputs: Shows the digital outputs and their indi- ual status (ON/OFF). They may be individually controlled when vidual status (ON/OFF). They may be individually controlled in Manual Override Mode in order to facilitate trouble shooting. when in Manual Override Mode in order to facilitate trouble shooting.
  • Page 27 Graphs Menu: This menu is a list of the available graphs. Graphs are real-time and show a time stamp of when the recording start- ed as well as a current time which will show when the graph was Screen Printed. Each graph has a CLEAR button which will erase the stored data and restart the graph.
  • Page 28 Below is an example of a typical graph screen. Items that are checked will be plotted, unchecked items will not. The graph screens show the time the graph started as well as the current time to time stamp the graph when screen printed. Graph Name.
  • Page 29 Tools Menu: This is a list of the various tools are used for system setup and monitoring. Tools—Configuration: This is where the system setup is done. THIS SHOULD BE DONE ONLY BY A QUALIFIED INSTALLER. Improper settings could cause the system to operate poorly or not at all. WARNING: Selecting the wrong Fluid Type and/or Fluid mixture can cause the heat exchanger to freeze, possibly rup- turing it and destroying the heat pump, VOIDING THE WARRANTY.
  • Page 30 The following describes each item on the Configuration Tab of the Configuration Page . IMPORTANT NOTE: System setup is done at the factory. Normally, only the control source, optional alarms and fluid type / fluid mix may need to be changed. Note that items that become unavailable or are automatic will be greyed out. Model Configuration: These are used to select the type of heat pump the control board is installed in.
  • Page 31 The screenshot below shows the Alarms and Delays tab of the Configuration Page. Click on the UP/DOWN arrows to change the value, note that values have both a low and high limit. Once values have been selected, click on APPLY to save the changes, a con- firmation window will appear (see below), click on OK.

  • Page 32: Lcd Display And Menus

    LCD DISPLAY AND MENUS Below are three pictures of the LCD Display and menu buttons. The screenshots are examples of the unit status and operating data displayed when at the message display level (top level). Pressing ENTER will enter into the menu levels beginning with the Main Menu.
  • Page 33 Main Menu: This is a list of the various tools are used for system setup and monitoring. They are each described below. 1-Oct-2015 Page 33 002028MAN-01...

  • Page 34: Setpoint Control

    SETPOINT CONTROL Units are shipped the Control Source set to Signals as shown in the screenshot of the Configuration Page below in RED—heating order to prevent the compressor from starting when the power is BLUE—cooling first turned on. Change Control Source HYD to Setpoints and the set- tings should now look like the screenshot below.

  • Page 35: Indoor Circulator Operation

    INDOOR CIRCULATOR OPERATION ments where originally. The Outdoor Reset Table row in use based on outdoor temperature will turn red. The Indoor Circulator will operate anytime the compressor is on. When Setpoints Method is set to Indoor Loop (default), The Outdoor Reset Table is created by subtracting the the circulator will also cycle on and off when the compressor is value of the Outdoor Reset Factor from the original setpoints not operating in order to sample the water temperature of the...

  • Page 36: Bacnet Interface

    BACNet INTERFACE The BACNet interface is an MS/TP connection via RS-485 twisted pair. There is a termination jumper if required to terminate the con- nection. It is located just above the BACNet connector., marked as TERM on the control board. The connector on the control board is a three wire removable screw connector.

  • Page 37: Table 10 - Bacnet Objects-Alarms (Read Only)

    TABLE 10 - BACNet OBJECTS - ALARMS (READ ONLY) Name Data Type BIT # BIT NAME Description ALARMS1 Integer Value ALARMS1 bit description is given below. Master permanent alarm (occurs when any alarm occurs) Low pressure alarm (suction pressure) High pressure alarm (discharge pressure) Loss of charge alarm Phase monitor alarm (ACCESORY for 3-phase models) Status alarm (must have current sensor ACCESORY)

  • Page 38: Startup Procedure

    The following steps describe how to perform the startup of the heat pump. The WH-Series Startup Record located in this manual is used in conjunction with this startup procedure to provide a detailed rec- ord of the installation. A completed copy should be left on site, a copy kept on file by the installer, and a copy should be sent to Mari- time Geothermal Ltd.

  • Page 39: Unit Startup

    1. The startup personnel shall sign and date the Startup Record and have the startup witness or appropriate site personnel sign as well. The startup personnel shall leave the Startup Record with the homeowner, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration. 1-Oct-2015...

  • Page 40: Startup Record

    Cooling S1 Setpoint, S1 Delta °F °C Date: Startup Personnel Witness/Site Signature: Signature: A total of three copies are required, one for the site, one for the installer/startup and one to be sent to Maritime Geothermal Ltd. 002028MAN-01 Page 40 1-Oct-2015...

  • Page 41: General Maintenance

    General Maintenance GENERAL MAINTENANCE SCHEDULE Item Interval Procedure Contactor 1 year Inspect for pitted or burned points. Replace if necessary. Heat exchanger As required* Clean as per HEAT EXHCANGER FLUSING PROCEDURE below. *Generally not required for closed loop systems. Whenever system performance is reduced for open loop. COAXIAL HEAT EXCHANGER FLUSHING PROCEDURE—GROUNDWATER Isolate the heat exchanger by closing the valves in the IN and OUT ports to the heat exchanger.

  • Page 42: Troubleshooting Guide

    Troubleshooting Guide The following steps are for troubleshooting the heat pump. Repair procedures and reference refrigeration circuit dia- grams can be found at the end of the troubleshooting guide. STEP 1: Verify that the LCD Display is functioning . If it is not, proceed to POWER SUPPLY TROUBLE SHOOTING, otherwise pro- ceed to STEP 2.
  • Page 43 THIS PAGE INTENTIONALLY LEFT BLANK 1-Oct-2015 Page 43 002028MAN-01...
  • Page 44 COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Compressor will Faulty Measuring from C on the terminal Replace control board control board not start strip, verify there is voltage at Y, HP1, HP2, LP1, LP2, and both flow pins but no voltage present at out- put.
  • Page 45 OPERATION TROUBLESHOOTING Fault Possible Cause Verification Recommended Action High Discharge Low Indoor Loop flow rate. Verify that Indoor Delta T is within 8- Increase flow rate if new installa- Pressure 12°F (4 to 7°C) tion, check for fouled heat ex- changer if existing installation.
  • Page 46 OPERATION TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Compressor See Low Suction frosting up Pressure in this section. EEV frosting up EEV stuck almost closed Manually adjusting the EEV does Go to EEV troubleshooting section. or partially blocked by for- not affect the superheat or the suc- eign object.

  • Page 47: Repair Procedures

    The heat pump is now ready for repairs. Always ensure nitrogen is flowing through the system during any soldering procedures to prevent soot buildup inside the pipes. Maritime Geothermal Ltd. recommends re- placing the liquid line filter-drier anytime the refrigeration system has been exposed to the atmosphere.

  • Page 48: Model Specific Information

    Model Specific Information REFRIGERANT CHARGE CHART SHIPPING INFORMATION Table 11 - Refrigerant Charge Table 12 - Shipping Information SIZE Lbs. MODEL WEIGHT DIMENSIONS in (cm) lb (kg) 285 (129) 34 (86) 34 (86) 35 (89) 310 (141) 34 (86) 34 (86) 35 (89) 370 (168) 34 (86)

  • Page 49: Capacity Ratings

    CAPACITY RATINGS 120°F (49°C) Output WH-25-H Nominal 2 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F BTU/Hr...
  • Page 50 CAPACITY RATINGS (continued) 120°F (49°C) Output WH-45-H Nominal 3 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F...
  • Page 51 CAPACITY RATINGS (continued) 120°F (49°C) Output WH-55-H Nominal 2 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F...
  • Page 52 CAPACITY RATINGS (continued) 120°F (49°C) Output WH-65-H Nominal 2 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F...
  • Page 53 CAPACITY RATINGS (continued) 120°F (49°C) Output WH-75-H Nominal 2 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F...
  • Page 54 CAPACITY RATINGS (continued) 120°F (49°C) Output WH-80-H Nominal 2 Ton R134a 60 Hz Source Data (Outdoor Loop) Sink Data (Indoor Loop) Power / Efficiency Water Water Evap. Cond. Flow Delta T Effective COPh Flow Delta T Output Temp Temp. °F USGPM °F °F...

  • Page 55: Electrical Tables

    ELECTRICAL TABLES Table 15 - Heat Pump Electrical Information Table 16- Heat Pump Electrical Information (208/230-1-60) (208-3-60) In/Outdoor Max Fuse/ Wire In/Outdoor Max Fuse/ Wire Model Compressor Model Compressor Circulators Breaker Size** Circulators Breaker Size** Max A Amps Amps Amps Max A Amps Amps Amps...

  • Page 56: Electrical Diagrams

    ELECTRICAL DIAGRAMS (208/230-1-60) 002028MAN-01 Page 56 1-Oct-2015...
  • Page 57 ELECTRICAL DIAGRAMS (208/230-1-60) - continued 1-Oct-2015 Page 57 002028MAN-01...
  • Page 58 ELECTRICAL DIAGRAMS (220-1-50) 002028MAN-01 Page 58 1-Oct-2015...
  • Page 59 ELECTRICAL DIAGRAMS (220-1-50) - continued 1-Oct-2015 Page 59 002028MAN-01...
  • Page 60 ELECTRICAL DIAGRAMS (208-3-60) 002028MAN-01 Page 60 1-Oct-2015...
  • Page 61 ELECTRICAL DIAGRAMS (208-3-60) - continued 1-Oct-2015 Page 61 002028MAN-01...
  • Page 62 ELECTRICAL DIAGRAMS (380-3-50) 002028MAN-01 Page 62 1-Oct-2015...
  • Page 63 ELECTRICAL DIAGRAMS (380-3-50) - continued 1-Oct-2015 Page 63 002028MAN-01...
  • Page 64 ELECTRICAL DIAGRAMS (460-3-60) 002028MAN-01 Page 64 1-Oct-2015...
  • Page 65 ELECTRICAL DIAGRAMS (460-3-60) - continued 1-Oct-2015 Page 65 002028MAN-01...
  • Page 66 ELECTRICAL DIAGRAMS (575-3-60) 002028MAN-01 Page 66 1-Oct-2015...
  • Page 67 ELECTRICAL DIAGRAMS (575-3-60) - continued 1-Oct-2015 Page 67 002028MAN-01...

  • Page 68: Refrigeration Circuit Diagrams

    REFRIGERATION CIRCUIT DIAGRAMS 002028MAN-01 Page 68 1-Oct-2015...

  • Page 69: Dimensions

    DIMENSIONS (WH-25/45/55) DIMENSIONS (WH-65/75/80) 1-Oct-2015 Page 69 002028MAN-01...

  • Page 70: Appendix A: Gen2 Control Board Description

    APPENDIX A - GEN2 Control Board Description The picture below shows the locations of the connectors and LED indicators of the control board. The control board offers many fea- tures such as short circuit protection on all digital outputs, Real Time Clock with super capacitor for backup power, WiFi capability, relay outputs for plenum heater control (if equipped), USB port, PIC32 microcontroller, etc.

  • Page 71: Table 21 - Control Board Connector Descriptions - Top

    Below is a picture of the control board . The tables following this picture describe the connections starting with the top of the board and working around the board counter clock-wise. TABLE 21 - Control Board Connector Descriptions (Top) Signal Description HPS1 High Pressure Sensor 1...

  • Page 72: Table 22 - Control Board Connector Descriptions - Left Side

    TABLE 22 - Control Board Connector Descriptions (Left Side) Name Description PWM_IN Signal for PWM IN Unused IN_SPARE Spare digital input Unused COM_IN Common for PWM IN Unused PWM4 PWM / 0-10VDC output Unused PWM3 PWM / 0-10VDC output Unused PWM2 PWM / 0-10VDC output Unused...

  • Page 73: Table 23 - Control Board Connector Descriptions - Bottom

    TABLE 23 - Control Board Connector Descriptions (Bottom) Name Description BACNet MS/TP RS-485 BACNet MS/TP RS-485 BACNet MS/TP Ground for shield if required STAGE1 Compressor Stage 1 Starts / stops the compressor STAGE2 Compressor Stage 2 Turns on/off the compressor Stage 2 solenoid RV_#1 Reversing Valve#1 Off in heating mode, on in cooling mode...

  • Page 74: Table 24 - Control Board Connector Descriptions - Right Side

    TABLE 24 - Control Board Connector Descriptions (Right Side) Signal Description DI_1 Digital Input1 Unused DI_0 Digital Input0 Unused Phase Monitor2 Unused Phase Monitor1 Accessory for 3 phase models Y2A* Aquastat Stage2 Used only for external aquastat control Aquastat Power (24VAC) Used only for external aquastat control Y1A* Aquastat Stage1...

  • Page 75: Appendix B: Pc Application Installation

    APPENDIX B - PC Application Installation The PC Application MGL GEN2 PC APP is compatible with the following systems: Windows 8 Windows 7, Windows Vista (32-bit), Windows Vista (64-bit) Windows XP Service Pack 2 Here are the installation steps for the PC APP, with screen- shots from Windows XP.

  • Page 76: Appendix C: Usb Driver Installer Setup

    APPENDIX C - USB Driver Installer Setup The PC Application MGL GEN2 PC APP is compatible with the following systems: Windows 8 Windows 7, Windows Vista (32-bit), Windows Vista (64-bit) Windows XP Service Pack 2 Here are the installation steps for the USB driver, with screen- shots from Windows XP.

  • Page 77: Limited Warranty

    (60) DAYS after the date of shipment, whichever occurs first. This warranty covers all internal components of the heat pump. MARITIME GEOTHERMAL LTD. shall, at its option, repair or replace any part covered by this warranty. Defective parts shall be returned to MARITIME GEOTHERMAL LTD., transportation charges prepaid.

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