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Maritime Geothermal TF Series Installation And Service Manual

Triple function geothermal heat pump gen2, two-stage r410a, sizes 45-80
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Installation and Service Manual
TF-Series
Triple Function Geothermal Heat Pump (Gen2)
Two-stage R410a
Model Sizes 45-80
Maritime Geothermal Ltd.
info@nordicghp.com
P.O. Box 2555, 170 Plantation Road
www.nordicghp.com
Petitcodiac, NB E4Z 6H4
002362MAN-01
(506) 756-8135
15-Jan-2019
Page 1
002362MAN-01
15-Jan-2019

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Summary of Contents for Maritime Geothermal TF Series

  • Page 1 Installation and Service Manual TF-Series Triple Function Geothermal Heat Pump (Gen2) Two-stage R410a Model Sizes 45-80 Maritime Geothermal Ltd. info@nordicghp.com P.O. Box 2555, 170 Plantation Road www.nordicghp.com Petitcodiac, NB E4Z 6H4 002362MAN-01 (506) 756-8135 15-Jan-2019 Page 1 002362MAN-01 15-Jan-2019...
  • Page 2 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 electrical shock. WARNING: Before performing service or maintenance on the system, ensure all power sources are DISCONNECTED.
  • Page 3 S D E This manual applies only to the models and revisions listed in this table. Maritime Geothermal Ltd. has a continuous improvement policy and reserves the right to modify specification data at any time without prior notice . 15-Jan-2019...

  • Page 4: Table Of Contents

    Pressure Drop Data .............. 80 Domestic Hot Water (Desuperheater) Connections ....18 Standard Capacity Ratings ........... 82 002238PDG - Typical Loop Connections - TF Series .... 19 Performance Tables .............. 84 002366PDG - Recommended Hydronic Buffer Tank Piping .. 20 Electrical Specifications ............

  • Page 5: Tables & Documents

    001822CDG - Dual Flow Groundwater (Open Loop) Installation for 2-Stage Heat Pumps ......35 000619INF - Ground Water Disposal Methods ....................36 002222PDG - Typical Duct & Condensate Connections - TF Series ..............38 002368SCH - TF Series Schematic Diagram 208/230-1-60 ................96 002369ELB - TF Series Electrical Box Diagram 208/230-1-60 .................

  • Page 6: Tf System Description

    TF System Description 1. Air Heating Mode General Overview In air heating mode, the heat pump heats warm air in a The Nordic TF-series, a unique product with a more than duct system when heat is called for by the ducted air thermo- 20-year history of reliable operation, is a package water source stat.

  • Page 7: Mode & Priority Selection

    Mode and Priority Selection Auxiliary Hydronic Heat The heat pump can be set to Air or Hydronic priority. Units If the heating system is fully backed up through the ducted are shipped set up for air priority. This is normally a good set- air system, hydronic backup heat may not be required.

  • Page 8: Tf-Series Sizing

    TF-Series Sizing Heat Pump Sizing heating season, in order to take advantage of the latent heat of groundwater (at least in northern climates). Hence, the Stand- The following table is a rough guideline as to the size of ard Capacity Ratings for Ground Loop Heating should apply in home each heat pump size can handle for ground loop (closed all northern climates.

  • Page 9: Installation Basics

    (groundwater) installation: FROM MARITIME GEOTHERMAL FROM MARITIME GEOTHERMAL • TF SERIES HEAT PUMP (L OR R RETURN) • TF SERIES HEAT PUMP (L OR R RETURN) • PLENUM HEATER __kW • PLENUM HEATER __kW •...

  • Page 10: Unpacking The Unit

    Air Outlet Orientation Unpacking the Unit The unit has a field configurable blower position, resulting When the heat pump reaches its destination it should be in top or side air discharge. Its default location from the factory unpacked to determine if any damage has occurred during is in the top of the unit, providing a “ninety”...

  • Page 11: 001915Inf - Internal Plenum Heater Installation

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  • Page 12: Wiring

    Wiring Indoor Loop Circulator Pump Wiring Power Supply Connections There are provisions for connecting the indoor circulator Power supply for the heat pump from the breaker panel is pump (between the heat pump and buffer tank) so that it will be supplied to the unit via concentric 1.093”...

  • Page 13: Open/Closed Loop Wiring

    Thermo2000 EcoUltra tank that is Domestic Hot Water (Desuperheater) available from Maritime Geothermal as an accessory. If not using Setpoint Control, backup device may use its The desuperheater function for domestic hot water heating own controls, provided they are accurate (i.e. devices with a is pre-wired and no field connections are necessary.

  • Page 14: 002071Cdg - Typical Gen2 Thermostat Connections

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  • Page 15: 002374Cdg - Typ. Tf Auxiliary Heat & Circulator Wiring

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  • Page 16: 002067Cdg - Typ. Heating Only Zone Wiring (Setpoint)

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  • Page 17: 002069Cdg - Typ. Htg. Only Zone Wiring (Signals/Hardw)

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  • Page 18: Piping

    Piping Domestic Hot Water Indoor Loop (Desuperheater) Connections The connections for the Indoor Loop circuit are 1” The port connections for the DHW circuit are 1/2” brass FPT brass female NPT. They are labelled as INDOOR IN and fittings. They are marked as DHW IN and DHW OUT. INDOOR OUT.

  • Page 19: 002238Pdg - Typical Loop Connections - Tf Series

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  • Page 20: 002366Pdg - Recommended Hydronic Buffer Tank Piping

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  • Page 21: 002367Pdg - Auxiliary Boiler Piping

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  • Page 22: 000530Pdg - Typical Zone Types

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  • Page 23: 001055Pdg - Connection To On-Demand Dhw Tank

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  • Page 24: 000970Pdg - Desup. Connection To Dhw Pre-Heat Tank

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  • Page 25: Ground Loop Installations

    FPT fittings. They are marked as OUTDOOR IN and Figure 1: Ground Loop Accessories & Tools OUTDOOR OUT. Circulator Pump Module Maritime Geothermal Ltd. offers compact pump modules with built in three way valves to facilitate filling and purging the ground loop. Refer to drawing 000906CDG at the end of this section.

  • Page 26: Adding Antifreeze Solution

    Once the lines have been filled and no more air bubbles are TABLE 12 - Volume of fluid per 100 ft. of pipe appearing in the line, adjust the circulator pump module valves to circulate water through the heat pump using the same Volume /100ft.

  • Page 27: 000608Inf - Typical Horiz. Ground Loop Configuration

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  • Page 28: 000609Inf - Typical Vert. Ground Loop Configuration

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  • Page 29: 000906Cdg - Circulator Pump Module Installation

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  • Page 30: 001823Cdg - Dual Flow Pump Module Installation

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  • Page 31: Open Loop Installations

    Open Loop Installations Well Water Temperature tween the pumping fluid level and the pump intake) would con- tribute linearly to the flow rate should a larger pump be installed. The temperature of the well water should be a minimum of 41°F (5°C), and should normally be 45+°F (7°C+).

  • Page 32: Water Valve

    will not necessarily be pumped into the same aquifer, depend- Figure 2: Open Loop Accessories & Tools ing on underground conditions. The return well must be able to supply at least the same quantity of water as the amount you Cumulative Water wish to inject into it, preferably much more, since injection ca-...

  • Page 33: Submersible Pump Selection

    Plumbing the Heat Pump Dole valves can emit a ‘whistling’ sound if the pressure drop through them is high. Therefore, they should be placed The port connections for the outdoor loop are 1” brass where the noise will not cause a nuisance, e.g. outside the FPT fittings.

  • Page 34: 000907Cdg - Typical Open Loop Installation

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  • Page 35: 001822Cdg - Dual Flow Open Loop Installation

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  • Page 36: 000619Inf - Ground Water Disposal Methods

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  • Page 37: Ductwork

    A duct system capable of supplying the required air flow is that promotes even heat distribution, such as one at each end of of utmost importance. Maritime Geothermal Ltd. recommends the room. It is always a good idea to place a damper in each...

  • Page 38: 002222Pdg - Typical Duct & Condensate Connections

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  • Page 39: Duct Sizing Guide

    TABLE 15 - Duct Sizing Guide (external static of 0.20” H Minimum Return Air Airflow Diameter Airflow Duct Area Rectangular Equivalents (in) Diameter (cfm) (in) (L/s) (sq.in) (in) 2.25 x 10 3 x 8 3.5 x 6 4 x 5.5 5 x 5 2.25 x 10 3 x 8...

  • Page 40: Operation

    Operation BACnet Control lator is ON, OFF or SAMPLING. The default sampling times are 2 minutes ON and 6 minutes OFF. The LCD display will also If controlling the system via the BACnet interface, skip the indicate when the ICR is sampling (ON). The Timer Override entire Operation section.

  • Page 41: Outdoor Reset

    Setpoint Control screen looks like this for both Method 1 (Indoor Loop) and Method 2 (HTS/CTS). Set indoor circulator ON/ OFF sampling intervals Reduce countdown timer to 10s Set units (STANDARD or METRIC) Outdoor Reset Measured water temperature When Control Source HYD is set to Setpoints, an optional Outdoor Reset control algorithm is available for heating mode.

  • Page 42: Pc Application (Pc App)

    PC Application (PC App) NOTE: Before using the PC Application, refer to Appendices 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 43 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. The main control panel window will open, shown below.
  • Page 44 View-->Alarms, Limits and Faults (ALARMS Tab): NOTE: Greyed out Alarms in the PC APP are not applicable to the system setup and are not monitored by the control board. NOTE: Refer to Alarms and Faults screenshot below to see which alarms have a count. Alarms without a count: These alarms only occur one time at which point they immediately create a Permanent Alarm.
  • Page 45 View-->Alarms, Limits and Faults (ALARMS LIST Tab): This tab show a history of alarms that have occurred since the PC APP was connected to the control board. This list will be lost when the PC APP is disconnected. Each alarm that occurs while This button will erase the the PC APP is connected to alarm events in the Alarm List.
  • Page 46 View-->Alarms, Limits and Faults (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 hard- ware, with LCD Display and buttons, or with a sensor. If a fault occurs, some things to try: ...
  • Page 47 View-->Water Lines Shows the water line temperatures. View-->Digital Inputs Shows the digital inputs and their individual status (ON/OFF). They may be individually controlled when in Manual Override Mode in order to facilitate troubleshooting. View-->Digital Outputs Shows the digital outputs and their individ- ual status (ON/OFF).
  • Page 48 Graphs Menu: This menu is a list of the available graphs. Graphs are real-time and show a time stamp of when the recording started as well as a current time which will show up if the graph is screen captured. Each graph has a CLEAR button which will erase the stored data and restart the graph.
  • Page 49 Tools Menu: This is where various tools for system setup and monitoring are located. Tools-->Configuration (System Configuration tab): This is where the system setup is done. Settings should only be changed by a person who has a good understanding of system oper- ation.
  • Page 50 Tools-->Configuration (Alarms and Delays tab): Click on the UP/DOWN arrows to change the value, noting that values have both a low and high limit. The number of minutes before the The minimum off unit can start again after various time when switching Count Reduce Time is alarm shutdowns between heating and...
  • Page 51 Tools-->Calibration: Generally there is no need for calibration. The suction and discharge pressures may be calibrated in increments of 1 psi if there is a discrepancy in the readings when compared to a known good reference. Temperature sensors may be adjusted in increments of 0.1°F. There is an AUTO CALIBRATION routine in the program that continu- ally calibrates the temperatures sensors against an on board reference resistor by applying an offset to the temperature sensors.
  • Page 52 Tools-->Datalogging (Datalog tab): The datalog rate is set via the dropdown box at the top right of the PC App main window. Starting with firmware version 2.85, a log will be recorded at the datalog rate whenever the heat pump is powered on, making it easy to compare datalogs from multiple units . The maximum number of datalog records is 32,224, which will take 45 days to fill up at the default recording rate of 2 minutes.
  • Page 53 Tools-->Parameters: WARNING! The Parameters page is for advanced use only. Changing parameter values can cause the system to stop functioning properly. The parameters page shows all configurable memory spaces with their name and current value and allows them to be edited directly. To change a parameter value type in the new value and press ENTER.

  • Page 54: Lcd Display & Menus

    LCD Display & Menus These 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. Pressing OK will toggle between message auto scroll and manual scroll modes.
  • Page 55 Main Menu Continued ENTER ENTER ENTER ENTER Description (From Main) (First Press) (Second Press) (Third Press) Do not enter Service Mode. Service Mode — Service Mode? — No Enter into Service Mode. — Yes Puts EEV in Auto mode EEV Control —...

  • Page 56: Bacnet Interface

    Communications line (-) (middle pin) C: Ground connection (left pin) Vendor: Maritime Geothermal Ltd. Vendor ID: Model Name: MGT GEN2 Control Board The following parameters can be set via the LED Display Configuration Menu or via the PC APP Configuration Page.

  • Page 57: Table 19 - Bacnet Objects - Data (Read Only)

    TABLE 19 - BACnet OBJECTS - DATA (Read Only) Name Property Units Description Data—Type Analog Input AI0 (Comp1_Current) Present Value Amps Compressor current draw (AI0) - requires accessory AI1 (Comp2_Current) Present Value User User defined (0-5VDC or 4-20mA) AI_2 Present Value User User defined (0-5VDC or 4-20mA) AI_3...

  • Page 58: Table 20 - Bacnet Objects - Alarm Descriptions (Read Only)

    TABLE 20 - BACnet OBJECTS - ALARM Descriptions (Read Only) Name Data Type Description AI0 (Comp1 Current) Analog Input Stage 1 Status alarm (Start / Stop Failure) - requires accessory AI1 (Comp2 Current) Analog Input LPS1 Analog Input Low pressure alarm HPS1 Analog Input High pressure alarm...

  • Page 59: Table 21 - Bacnet Objects - Fault Descriptions (Read Only)

    TABLE 21 - BACnet OBJECTS - FAULT Descriptions (Read Only) Name Data Type Description AI4 (Cold Tank) Analog Input AI5 (Hot Tank) Analog Input Tank temperature sensor faulty or disconnected - requires accessory LPS1 Analog Input Low pressure sensor faulty or disconnected HPS1 Analog Input High pressure sensor faulty or disconnected...

  • Page 60: Startup Procedure

    A completed copy should be left on site, a copy kept on file by the installer and a copy should be sent to Maritime Geothermal Ltd. Check the boxes or fill in the data as each step is completed. For data boxes, circle the appropriate units.
  • Page 61 Startup Record: 1. Sign and date the Startup Record and have the homeowner sign as well. Leave the Startup Record with the homeowner, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration. 15-Jan-2019...

  • Page 62: Startup Record

    °F °C Compressor L1 (black wire) current Date: Installer Signature: Homeowner Signature: A total of three copies are required: one for the homeowner, one for the installer, and one to be sent to Maritime Geothermal Ltd. 002362MAN-01 Page 62 15-Jan-2019...

  • Page 63: General Maintenance

    General Maintenance GENERAL MAINTENANCE SCHEDULE Item Interval Procedure Air Filter 6 months Inspect for dirt. Replace if necessary. Contactor 1 year Inspect for pitted or burned points. Replace if necessary. Condensate Drain 1 year Inspect for clogs. Remove and clean if necessary. Loop Coils As required* Clean as per HEAT EXCHANGER FLUSHING PROCEDURE below.

  • Page 64: Troubleshooting Guide

    Troubleshooting Guide The following steps are for troubleshooting the heat pump. If the problem is with the domestic hot water or the plenum heat- er, proceed to those sections at the end of the troubleshooting guide. Repair procedures and reference refrigeration circuit diagrams can be found later in this manual.
  • Page 65 ALARMS AND FAULTS TROUBLESHOOTING Alarm/Fault Description Recommended Action The data logging function of the GEN2 Control Board is a very useful tool for troubleshooting alarms. It provides a histo- ry of the unit operation up to and including the time at which the alarm(s) occurred. Note that some alarms require ac- cessory components.
  • Page 66 COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Compressor will Faulty control board. No 24vac output on STAGE1 when Replace control board. not start compressor should be operating. Faulty run capacitor. Check value with capacitance meter. Replace if faulty. (Single phase only) Should match label on capacitor.
  • Page 67 OPERATION TROUBLESHOOTING - WATER HEATING MODE Possible Cause Verification Recommended Action Fault High or low suc- Faulty sensor Compare pressure sensor reading Check wiring, replace sensor. If tion or discharge against a known reference such as a problem persists, replace control pressure new refrigeration manifold set.
  • Page 68 OPERATION TROUBLESHOOTING - WATER HEATING MODE Possible Cause Verification Recommended Action Fault Low suction Leaking NC solenoid Check for temperature difference Replace solenoid or valve if faulty. pressure valve. across valve, which should be closed in this mode. (continued) Low refrigerant charge. Superheat is high, EEV position is Locate the leak and repair it.
  • Page 69 OPERATION TROUBLESHOOTING - WATER HEATING MODE (Signals Method Only) Fault Possible Cause Verification Recommended Action No display on Transformer breaker 230VAC is present across L1 and L3 Push breaker back in. If it trips aquastat. tripped. of the compressor contactor but again locate cause of short circuit 24VAC is not present across R and and correct.
  • Page 70 OPERATION TROUBLESHOOTING - AIR HEATING MODE Possible Cause Verification Recommended Action Fault High or low Faulty sensor Compare pressure sensor reading Check wiring, replace sensor. If suction or dis- against a known reference such as a problem persists, replace control charge pressure new refrigeration manifold set.
  • Page 71 OPERATION TROUBLESHOOTING - AIR HEATING MODE Possible Cause Verification Recommended Action Fault Low suction Faulty NC solenoid valve Verify solenoid by removing it from Replace solenoid or valve if pressure or coil. the shaft while the unit is running. faulty. There should be an audible click (continued) sound if the solenoid is working.
  • Page 72 OPERATION TROUBLESHOOTING - AIR COOLING MODE Fault Possible Cause Verification Recommended Action Heating instead Thermostat not set up Verify that there is 24VAC across O Correct setup. of cooling properly. and C of the terminal strip when calling for cooling. Faulty reversing valve so- Verify solenoid by removing it from Replace solenoid if faulty.
  • Page 73 OPERATION TROUBLESHOOTING - AIR COOLING MODE Fault Possible Cause Verification Recommended Action High suction EEV stuck open. Manually adjusting the EEV does Go to EEV troubleshooting section. pressure not affect the superheat or the suc- (may appear to tion pressure. Low superheat and not be pumping) discharge pressure.
  • Page 74 FAN/BLOWER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Low airflow Dirty air filter. Inspect. Replace. Dirty air coil. Inspect. Clean. Poor ductwork. Measure delta T between supply The ECM fan will provide proper and return ducts at the unit. In airflow up to 0.5 inH O.
  • Page 75 EEV TROUBLESHOOTING If there is a refrigeration problem such as low charge, plugged filter-dryer, EEV stuck, or any other kind of restriction in the refrigeration system, the apparent EEV position will work its way towards 100% (full open). High superheat is also a symptom.
  • Page 76 PLENUM HEATER TROUBLE SHOOTING Fault Possible Cause Verification Recommended Action No 230VAC Disconnect switch open. Verify disconnect switch is in the ON Determine why the disconnect across plenum (if installed) position. switch was opened, if all is OK heater L1 and L2 close the switch.
  • Page 77 DOMESTIC HOT WATER (DESUPERHEATER) TROUBLE SHOOTING Fault Possible Cause Verification Recommended Action Insufficient hot Thermostat on hot water Visually inspect the setting. Adjust the setting. water (tank tank set too low. Should problem) be set at 120°F to 140°F. Breaker tripped, or fuse Check both line and load sides of Correct problem, and replace blown in electrical supply...

  • Page 78: Repair Procedures

    The heat pump is now ready for repairs. Always ensure nitrogen is flowing through the system during any brazing procedures to prevent oxidation inside the pipes. Maritime Geothermal Ltd. recommends replacing the liquid line filter-dryer any time the refrigeration system has been exposed to the atmosphere.

  • Page 79: Model Specific Information

    Model Specific Information Table 22 - Shipping Information Table 24 - Required Loop Flow Rates WEIGHT DIMENSIONS in (cm) OUTDOOR LOOP INDOOR LOOP MODEL MODEL lb. (kg) TF-45 520 (236) 44 (112) 36 (91) 68 (173) TF-45 0.63 0.63 TF-55 575 (261) 44 (112) 36 (91)

  • Page 80: Pressure Drop Data

    Pressure Drop Data Table 26: Loop Pressure INDOOR OUTDOOR OUTDOOR OUTDOOR Drop Data (water 104°F) (water 50°F) (15% methanol 32°F) (35% prop. glycol 32°F) 0.25 0.32 0.38 0.44 0.50 0.57 TF-45 0.63 0.69 0.76 0.82 0.88 11.3 0.95 12.5 0.38 0.44 0.50 0.57...
  • Page 81 Table 26: Loop Pressure INDOOR OUTDOOR OUTDOOR OUTDOOR (cont’d) Drop Data (water 104°F) (water 50°F) (15% methanol 32°F) (35% prop. glycol 32°F) 0.38 0.44 0.50 0.57 0.63 0.69 TF-75 0.76 0.82 0.88 0.95 1.01 1.07 0.57 0.63 0.69 0.76 0.82 TF-80 0.88 0.95...

  • Page 82: Standard Capacity Ratings

    Standard Capacity Ratings Standards C13256-1 / ISO13256-1 / ARI 13256-1 Table 27 - Standard Capacity Ratings - Ground Loop Heating* 60Hz STAGE 1 - ELT 41°F (5°C) EAT 68°F (20°C) * 15% NaCl by Weight Ground Loop Fluid STAGE 2 - ELT 32°F (0°C) Nominal Pressure Input...

  • Page 83: Table 31 - Standard Capacity Ratings - Ground Loop Hydronic Heating 60Hz

    Standard Capacity Ratings Standards C13256-1 / ISO13256-1 / ARI 13256-1 Table 31 - Standard Capacity Ratings - Ground Loop Hydronic Heating* 60Hz STAGE 1 - ELT 41°F (5°C) EWT 104°F (40°C) * 15% NaCl by Weight Ground Loop Fluid STAGE 2 - ELT 32°F (0°C) Nominal Liquid Flow Outdoor...

  • Page 84: Performance Tables

    Performance Tables - TF-45 Air Heating Mode R410a 60 Hz TF-45-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts Watts...
  • Page 85 Performance Tables - TF-45 Hydronic Heating Mode R410a 60 Hz TF-45-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 86 Performance Tables - TF-55 Air Heating Mode R410a 60 Hz TF-55-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 87 Performance Tables - TF-55 Hydronic Heating Mode R410a 60 Hz TF-55-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 88 Performance Tables - TF-65 Air Heating Mode R410a 60 Hz TF-65-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 89 Performance Tables - TF-65 Hydronic Heating Mode R410a 60 Hz TF-65-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 90 Performance Tables - TF-75 Air Heating Mode R410a 60 Hz TF-75-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 91 Performance Tables - TF-75 Hydronic Heating Mode R410a 60 Hz TF-75-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 92 Performance Tables - TF-80 Air Heating Mode R410a 60 Hz TF-80-HACW-P-1S Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Compressor Fan* Effective COPh Delta T Temp Temp. Flow Output °F °F °F °F Btu/hr Watts Amps Watts...
  • Page 93 Performance Tables - TF-80 Hydronic Heating Mode R410a 60 Hz TF-80-HACW-P-1T Source Data (Outdoor Loop) Power Consumption Sink Data (Indoor Loop) Evap. Cond. Flow Delta T Total Effective COPh Flow Delta T Temp Temp. Output °F °F °F °F Btu/hr Watts Amps Watts...

  • Page 94: Electrical Specifications

    Electrical Specifications TABLE 33 - TF-Series Electrical Data Max. Min. Power Supply Compressor Circulators Breaker Wire Code V-ø-Hz Max A Amps Amps Amps 230-1-60 15.6 24.9 28.8 #8-2 * 208-3-60 11.6 20.9 23.8 #10-3 * TF-45 460-3-60 15.0 16.4 #12-4 220-1-50 12.4 21.9...

  • Page 95: Airflow Data

    Airflow Data TABLE 35 - Airflow Range for STAGE 2 (Full Load) Nominal Range AR - 20% AR - 15% AR - 10% AR - 5% Model 1150 900-1400 430-660 1040 1090 1500 1200-1800 570-850 1200 1280 1350 1430 1900 1500-2300 710-1090 1520...

  • Page 96: Wiring Diagram (208/230-1-60)

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  • Page 97: Electrical Box Layout (208/230-1-60)

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  • Page 98: Wiring Diagram (208-3-60)

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  • Page 99: Electrical Box Layout (208-3-60)

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  • Page 100: Wiring Diagram (460-3-60)

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  • Page 101: Electrical Box Layout (460-3-60)

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  • Page 102: Tf-Series Refrigeration Circuit - Air Heating Mode

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  • Page 103: Tf-Series Refrigeration Circuit - Air Cooling Mode

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  • Page 104: Tf-Series Refrigeration Circuit - Hydronic Heating Mode

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  • Page 105: Dimensions

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  • Page 106 Dimensions: TF-45 Right Return 002362MAN-01 Page 106 15-Jan-2019...
  • Page 107 Dimensions: TF-55/65/75/80 Left Return 15-Jan-2019 Page 107 002362MAN-01...
  • Page 108 Dimensions: TF-55/65/75/80 Right Return 002362MAN-01 Page 108 15-Jan-2019...

  • Page 109: Appendix A: 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 110: Table A1 - Control Board Connector Descriptions (Top)

    The tables describe the connections starting with the top of the board and working around the board counter clock-wise. TABLE A1 - Control Board Connector Descriptions (Top) Name Description HPS1/HI1 High Pressure Sensor 1 Measures discharge pressure. LPS1/LO1 Low Pressure Sensor 1 Measures suction pressure.

  • Page 111: Table A3 - Control Board Connector Descriptions (Bottom)

    TABLE A3 - Control Board Connector Descriptions (Bottom) Name Description BACnet MS/TP Ground for shield if required. BACnet MS/TP RS-485. BACnet MS/TP RS-485. STAGE1 Compressor Stage 1 Starts / stops the compressor. STAGE2 Compressor Stage 2 Turns the compressor Stage 2 solenoid on/off. RV_#1 Reversing Valve#1 Off in heating modes, on in air cooling mode.

  • Page 112: Table A4 - Control Board Connector Descriptions (Right Side)

    TABLE A4 - Control Board Connector Descriptions (Right Side) Name Description DI_1 Digital Input1 Unused. DI_0 Digital Input0 Low pressure select from open/closed loop harness (0=open loop, 1=closed loop) Phase Monitor2 Unused. Phase Monitor1 Accessory for 3 phase models. Y2A* Aquastat Stage2 Optional water heat stage 2 24VAC input for use with Signals/Hardwired control.

  • Page 113: Appendix B: Usb Driver Installation

    Appendix B - USB Driver Installation The first step in connecting a Windows laptop computer to the 3. Choose “Open with Windows Explorer”, and hit “OK”: control board is to install the USB driver. Any version of Windows from XP and onwards is compatible, including 7 &...

  • Page 114: Appendix C: Pc App Installation

    Appendix C - PC App Installation The second step in connecting a Windows laptop computer to 3. Choose “Open with Windows Explorer”, and hit “OK”: the control board is to install the PC App. Be sure USB driver is already installed. Any version of Windows from XP and onwards is compatible, including 7 &...

  • Page 115: Appendix D: Updating Firmware

    Appendix D - Updating Firmware METHOD 1: Updating Firmware Using PC App The following provides step by step instructions to update the firmware in the control board to the latest release. The firmware comes as a ZIP file named: MGT GEN2 Bootload Firmware Vxxx.zip where xxx is the version reference, e.g. 254 (version 2.54, this will be used for the remainder of this procedure).
  • Page 116 14. Programmed and verified. Click on Run Application. Click on Connect. The messages should read: The messages should read: If device fails to connect and an error message is displayed, the board’s bootloader may be older than v2.0. It will be necessary to instead update the firm- ware via jumper pins, as per the next section.
  • Page 117 METHOD 2: Updating Firmware Using Jumper Pins The following provides step by step instructions to update the 6. Turn the power back on. The control board is now in boot firmware in the control board to the latest release. loader mode and is ready to be programmed. The firmware comes as a ZIP file named: Run PIC32UBL.exe.

  • Page 118: Warranty

    Should the installer be unavailable, contact any MG recognized distributor, dealer or service organization. If assistance is required in obtaining warranty performance, write or call: Maritime Geothermal Ltd • Customer Service • PO Box 2555 • Petitcodiac, New Brunswick E4Z 6H4 • (506) 756 8135 • or e-mail to info@nordicghp.com NOTE: Some states or Canadian provinces do not allow limitations on how long an implied warranty lasts, or the limitation or exclusions of consequential or incidental damages, so the foregoing exclusions and limitations may not apply to you.

This manual is also suitable for:

Tf-45Tf-55Tf-65Tf-80Tf-75

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