Maritime Geothermal ATF Series Installation And Service Manual
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Maritime Geothermal ATF Series Installation And Service Manual

Triple function central air source heat pump
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Installation and Service Manual
ATF-Series
Triple Function Central Air Source Heat Pump
Two-stage R410a 60Hz
Model Sizes 45-75
Maritime Geothermal Ltd.
info@nordicghp.com
P.O. Box 2555, 170 Plantation Road
www.nordicghp.com
Petitcodiac, NB E4Z 6H4
002000MAN-02
(506) 756-8135
ECO 000266/000274: 1-Mar-2020
Page 1
002000MAN-02
ECO 000266/000274: 1-Mar-2020

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Summary of Contents for Maritime Geothermal ATF Series

  • Page 1: Average Max. Snow Depth Map - Canada

    Installation and Service Manual ATF-Series Triple Function Central Air Source Heat Pump Two-stage R410a 60Hz Model Sizes 45-75 Maritime Geothermal Ltd. info@nordicghp.com P.O. Box 2555, 170 Plantation Road www.nordicghp.com Petitcodiac, NB E4Z 6H4 002000MAN-02 (506) 756-8135 ECO 000266/000274: 1-Mar-2020 Page 1...
  • 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 Version MGT GEN2 Bootload Firmware V3.26+ MGT GEN2 PC APP V1.70+ Maritime Geothermal Ltd. has a continuous improvement policy and reserves the right to modify specification data at any time without prior notice . ECO 000266/000274: 1-Mar-2020 Page 3 002000MAN-02...

  • Page 4: Table Of Contents

    Table of Contents Tables & Documents ........... Duct Systems - Grill Layout ..............34 Thermostat Location ................34 ATF System Description ........Plenum Heater ..................34 002249PDG - Typical Duct & Condensate Connections ..... 35 General Overview ................. 6 Duct Sizing Guide ................36 1.

  • Page 5: Tables & Documents

    Tables & Documents Tables Table 1 - Heat Pump Size vs. Heated Area ........................8 Table 2 - Plenum Heater Sizing ............................. 8 Table 3 - Power Supply Connections .......................... 14 Table 4 - Outdoor Unit Power Supply Connections ..................... 14 Table 5 - Plenum Heater Signal Connections ......................

  • Page 6: Atf System Description

    ATF System Description General Overview Auxiliary Air Heat An electric resistance plenum heater, placed inside the The ATF-Series heat pump is an air source heat pump heat pump but ordered separately, is required. This is because that can heat or cool via a forced air duct system, as well as the capacity of air source heat pumps fall as the outdoor tem- heat water for hydronic application like in-floor heating.

  • Page 7: Air Cooling Mode

    3. Air Cooling Mode to hydronic priority, so that the heat pump will heat in-floor water first and any shortfall in heating capacity on cold days will be In air cooling mode, the heat pump cools air through the covered by the air plenum heater. duct system.

  • Page 8: Atf Sizing

    ATF Sizing Air Source Heat Pumps Even in northern heating dominant climates, it should be ensured that 100% of the cooling load will be covered Since it is harder to extract heat from colder outdoor air, when sizing the heat pump. any air source heat pump will have its lowest heating capacity on cold days when building heat load is the highest.

  • Page 9: Installation Basics

    Any visible damage should be noted on the FROM MARITIME GEOTHERMAL carrier's freight bill and a suitable claim filed at once. • ATF SERIES HEAT PUMP (L OR R RETURN) W/ACE OUTDOOR UNIT Indoor Unit Placement • PLENUM HEATER __kW •...

  • Page 10: Indoor Unit Air Outlet Orientation & Air Return Orientation

    Indoor Unit Air Outlet Orientation Air Return Orientation The heat pump can be ordered as left or right air return The indoor unit has a field configurable blower position, from the factory. This must be specified at time of order as the resulting in top or side air discharge.

  • Page 11: 001915Inf - Internal Plenum Heater Installation

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  • Page 12: Outdoor Unit Placement

    30” (76 cm) of additional height are available as an accessory from Maritime Geothermal Ltd. IMPORTANT NOTE: The line set between the To attach the legs, first remove the three bolts with flat indoor and outdoor units must not exceed 70 washers that hold each foot plate in place.
  • Page 13 Average Maximum Snow Depth - Canada (1979-1997) Source: Natural Resources Canada ECO 000266/000274: 1-Mar-2020 Page 13 002000MAN-02...

  • Page 14: Wiring

    Wiring Indoor Unit Power Supply Connections Plenum Heater: Power Connections Power supply for the heat pump from the breaker panel is Auxiliary air heat will usually be provided by an electric supplied to the indoor unit. The unit has a concentric 1.093” / duct heater (plenum heater).

  • Page 15: Control Transformer

    Resettable breaker on transformer used for the Thermo2000 EcoUltra tank that is available from Maritime Geothermal as an accessory; see the setup (4) 460-3-60 Primary / Secondary fuses instruction sheet that comes with tank and on following page. (6) 220-1-50...

  • Page 16: Outdoor Unit: Signal Connections

    Outdoor Unit: Signal Connections Air Thermostat Connections The speed of the fan and the heating mode expansion A three-stage heating and two stage cooling heat pump valve (EEV) in the outdoor unit are controlled by the control configurable thermostat is required. The stages are S1 = stage board in the indoor ATF unit, and a temperature sensor is read.

  • Page 17: 002071Cdg - Typical Gen2 Thermostat Connections

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  • Page 18: 002304Cdg - Typical Atf Wiring

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  • Page 19: 002375Qss - Eco Ultra Tanks: Getting Started

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  • Page 20: 002067Cdg - Typ. Heating Only Zone Wiring (Setpoint)

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  • Page 21: 002069Cdg - Typ. Htg. Only Zone Wiring (Hardwired)

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  • Page 22: Piping

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

  • Page 23: 002305Pdg - Typical Piping Connections - Atf

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  • Page 24: 002366Pdg - Recommended Buffer Tank Piping

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  • Page 25: 000538Pdg - Buffer Tank Piping - Multiple Units

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  • Page 26: 002367Pdg - Auxiliary Boiler Piping

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  • Page 27: 000530Pdg - Typical Zone Types

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  • Page 28: 001055Pdg - Connection To On-Demand Dhw Tank

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  • Page 29: 000970Pdg - Desup. Conn. To Dhw Pre-Heat Tank

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  • Page 30: 002384Pdg - Dhw Pre-Heat Tank - Multiple Units

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  • Page 31: Outdoor Unit Line Set

    Outdoor Unit Line Set Line Set Interconnect Tubing TABLE 15a - 3-way Service Valve Tooling Once both the indoor and outdoor units have been Line set Hex key to Charging Nominal Valve cap mounted, the line set may be run between them. The line set connection open/ port cap...

  • Page 32: Pipe Insulation

    Pipe Insulation Charging the System All line set piping between the indoor and outdoor units The indoor unit is pre-charged for line sets up to 20 ft long. should be insulated with 3/8” thick closed cell pipe insulation to Once the system has been vacuumed, if extra refrigerant is prevent condensation and dripping onto floors or walls during required due to the length of the line set, it may be added before the heating season.

  • Page 33: 002250Cdg - Typical Line Set Connections

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  • Page 34: Ductwork

    A duct system capable of supplying the required airflow is use one larger return grill if it can be centrally positioned oppo- of utmost importance. Maritime Geothermal Ltd. recommends site of the supply grills, however it is preferred to have one re-...

  • Page 35: 002249Pdg - Typical Duct & Condensate Connections

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  • Page 36: Duct Sizing Guide

    TABLE 19 - 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 37: Operation

    Operation BACnet Control is displayed in the Hot Tank box on the PC App’s View --> Set- point Control screen. If this temperature shows NC, then If controlling the system via the BACnet interface, skip the either the probe is not connected to the board or there is a prob- entire Operation section.

  • Page 38: Top Up S1 Function

    The 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) Measured water temperature The maximum water temperature setpoint is 120°F / 49°C.

  • Page 39: Outdoor Reset

    2. Hydronic Heating: Signals Control Outdoor Reset As mentioned earlier, lower heating setpoints will translate directly into a higher COP (efficiency). PC APP: Tools-->Configuration When Control Source HYD is set to Setpoints, an optional Outdoor Reset control algorithm is available for heating mode, which reduces the heating temperature setpoints at warmer outdoor temperatures as measured by the outdoor unit.

  • Page 40: Pc Application (Pc App)

    PC Application (PC App) NOTE: Before using the PC Application, refer to Appendix B & 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 41 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 42 View-->Alarms, Limits and Faults The alarms page has four tabs: ALARMS - Current alarm status, alarm count, high and low refrigeration alarm cutout values, and short cycle timer. ALARMS LIST - List of alarms that have occurred since the PC APP has been operating (this will be lost when the PC is discon- nected from the control board.) LIMITS - Limits in effect which prevent compressor operation but that do not cause an alarm.
  • Page 43 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 44 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 45 View-->Indoor Fan Shows the settings screen for the indoor fan/blower. Airflow may be adjusted up or down by the user within the allowed range. See Indoor Airflow Data section in the Model Specific Information chapter for airflow ranges. NOTE: This screen may also be accessed from the SET button of the Indoor Fan section of the Control Panel screen.
  • Page 46 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 47 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 48 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 time when unit can start again after various switching between heating and Count Reduce Time is alarm shutdowns...
  • Page 49 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 50 Tools-->Datalogging (Datalog tab): The datalog rate is set via the dropdown box at the top right of the PC App main window. 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 51 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 52: Lcd Interface & Menus

    LCD Interface & 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 53 ...continued from previous page ENTER ENTER ENTER ENTER Description (From Main) (First Press) (Second Press) (Third Press) Summer Setback — Enable Setback? Enable summer setback. — Enable (only if using Disable summer setback. — Disable Setpoint Control) Disable compressor, auxiliary and ICR. System EN/DIS —...

  • Page 54: Bacnet Interface

    GND pin of the last unit. The shield grounds for intermediate units should be connected together. The shield ground should be left unconnected at the building controller end for all cases. Vendor: Maritime Geothermal Ltd. Vendor ID: Model Name:...

  • Page 55: Table 24 - Bacnet Objects - Data (Read Only)

    TABLE 24 - 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) Present Value User User defined (0-5VDC or 4-20mA) Present Value...

  • Page 56: Table 25 - Bacnet Objects - Alarm Descriptions (Read Only)

    TABLE 25 - 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 57: Table 26 - Bacnet Objects - Fault Descriptions (Read Only)

    TABLE 26 - BACnet OBJECTS - FAULT Descriptions (Read Only) Name Data Type Description AI4 (Cold Tank) Analog Input AI5 (Hot Tank) Analog Input Hot 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 58: 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 59 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. ECO 000266/000274: 1-Mar-2020...

  • Page 60: Startup Record

    Compressor L1 (black wire) current 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. ECO 000266/000274: 1-Mar-2020 Page 60 002000MAN-02...

  • Page 61: General Maintenance

    General Maintenance GENERAL MAINTENANCE SCHEDULE Item Interval Procedure Air Filter 6 months Inspect for dirt. Replace if necessary. Compressor Contactor 1 year Inspect for pitted or burned points. Replace if necessary. Condensate Drain 1 year Inspect for clogs. Clean if necessary. Outdoor Unit Weekly Inspect for and clear away debris or leaves in air coil intake, and ice buildup...

  • Page 62: Troubleshooting Guide

    Troubleshooting Guide WARNING: WHEN SERVICING THE OUTDOOR UNIT, BE SURE TO TURN OFF POWER TO THE INDOOR UNIT. The outdoor disconnect switch will not cut low voltage power, and damage to the control board will occur if the main heat pump breaker is not turned off during service. The following steps are for troubleshooting the heat pump.
  • Page 63 ALARM 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 64 FAULT TROUBLESHOOTING Alarm/Fault Description Recommended Action Digital Inputs Digital Outputs Analog Inputs Cycle the power a few times; if the A failure has occurred and the indicated section of the fault persists replace the control control board may no longer work properly. MODBUS Comms board.
  • Page 65 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 66 OPERATION TROUBLESHOOTING - WATER HEATING MODE Possible Cause Verification Recommended Action Fault Outdoor temper- Outdoor EEV is mechani- Verify EEV operation (EEV2) - see Replace outdoor EEV if faulty. ature reading is cally faulty and causing EEV Troubleshooting section incorrect by a electromagnetic interfer- large amount ence...
  • Page 67 OPERATION TROUBLESHOOTING - WATER HEATING MODE Fault Possible Cause Verification Recommended Action High suction Outdoor unit’s EEV stuck Manually adjusting the outdoor EEV Go to EEV troubleshooting sec- pressure open does not affect the superheat or the tion. (may appear to suction pressure.
  • Page 68 OPERATION TROUBLESHOOTING - HEATING MODE Possible Cause Verification Recommended Action Fault Outdoor temper- Outdoor EEV is mechani- Verify EEV operation (EEV2) - see Replace outdoor EEV if faulty. ature reading is cally faulty and causing EEV Troubleshooting section incorrect by a electromagnetic interfer- large amount ence...
  • Page 69 OPERATION TROUBLESHOOTING - AIR HEATING MODE Fault Possible Cause Verification Recommended Action High suction Outdoor unit’s EEV stuck Manually adjusting the outdoor EEV Go to EEV troubleshooting sec- pressure open does not affect the superheat or the tion. (may appear to suction pressure.
  • Page 70 OPERATION TROUBLESHOOTING - DEFROST & COOLING MODES Fault Possible Cause Verification Recommended Action High suction Indoor unit’s EEV stuck Manually adjusting the indoor EEV Go to EEV troubleshooting section. pressure open does not affect the superheat or the (may appear to suction pressure.
  • Page 71 INDOOR FAN/BLOWER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Low indoor unit Dirty air filter Inspect. Replace. airflow 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 an external static heating mode, it should not be backpressure of 0.5 inH...
  • Page 72 OUTDOOR FAN TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Outdoor fan not Fan power connections. Check for 230VAC across L1 and L2 If no voltage present, verify that operating or of the outdoor unit. Proceed to next the connections are tight in both operating step if voltage present.
  • Page 73 (contact ing elements (only if in- positioned after duct elbow. Maritime Geothermal). stalled in ductwork outside heat pump) Faulty overload Reset thermal overload. Replace if faulty.
  • Page 74 DOMESTIC HOT WATER (DESUPERHEATER) TROUBLE SHOOTING Fault Possible Cause Verification Recommended Action Insufficient hot Thermostat on final hot Visually inspect the setting. Adjust the setting. water (tank water tank set too low. problem) Should be set at 120°F to 140°F Breaker tripped, or fuse Check both line and load sides of Correct problem, and replace...

  • Page 75: Repair Procedures

    Repair Procedures WARNING: WHEN SERVICING THE OUTDOOR UNIT, BE SURE TO TURN OFF POWER TO THE INDOOR UNIT. The outdoor disconnect switch will not cut low voltage power, and damage to the control board will occur if the main heat pump breaker is not turned off during service. Pumpdown Procedure 1.

  • Page 76: Compressor Replacement Procedure

    Compressor Replacement Procedure 1. Pump down the unit as per the Pumpdown Procedure above. If there was a compressor burn out (motor failure), the refrigerant cannot be reused and must be disposed of according to local codes. 2. Disconnect piping. 3.

  • Page 77: Control Board Replacement Procedure

    Control Board Replacement Procedure 1. Turn the power off to the unit. 2. Take a picture of the control board and connectors for reference. The picture in Appendix A may also be helpful. 3. Carefully remove all green terminal strips on the left side, the right side and the bottom of the control board. They pull straight off the board, with no need to disconnect wires from their screw terminals.

  • Page 78: Lcd Interface (Display) Board Replacement Procedure

    LCD Interface (Display) Board Replacement Procedure 1. Turn the power off to the unit. 2. Remove the display board cable connector from the control board. 3. Using a sharp utility knife with a long blade, slice each of the display board standoff heads off, taking care to not damage the lexan cover.

  • Page 79: Model Specific Information

    Model Specific Information Table 27 - Shipping Information - Indoor Unit Table 28 - Shipping Information - Outdoor Unit WEIGHT DIMENSIONS in (cm) WEIGHT DIMENSIONS in (cm) MODEL MODEL lb. (kg) lb. (kg) ATF-45 450 (205) 44 (112) 36 (91) 66 (167) ACE-45 230 (104)

  • Page 80: Pressure Drop Data

    Pressure Drop Data Table 34: Hydronic Loop Water 104°F Pressure Drop Data ATF-45 ATF-55 ATF-65 ATF-75 0.32 0.38 0.44 0.50 0.57 0.63 0.69 0.76 0.82 0.88 0.95 1.01 Standard Capacity Ratings < Preliminary > Standard CSA C656 (ARI 210-240). 60 Hz Table 35 - Standard Capacity Ratings - Air Heating Indoor Air...

  • Page 81: Performance Tables: Atf-45

    Performance Tables - ATF-45 < Preliminary > Air Heating Mode R410a 60 Hz ATF-45-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Heating Airflow Delta T COPh Temp Temp Current Power Temp Capacity °F °F Btu/hr Amps Watts °F °F...
  • Page 82 Performance Tables - ATF-45 Hydronic Heating Mode R410a 60 Hz ATF-45-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Liquid Heating Delta T COPh Temp Temp Current Power Temp Flow Capacity °F °F Btu/hr Amps Watts °F °F °F °F...

  • Page 83: Performance Tables: Atf-55

    Performance Tables - ATF-55 < Preliminary > Air Heating Mode R410a 60 Hz ATF-55-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Heating Airflow Delta T COPh Temp Temp Current Power Temp Capacity °F °F Btu/hr Amps Watts °F °F...
  • Page 84 Performance Tables - ATF-55 Hydronic Heating Mode R410a 60 Hz ATF-55-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Liquid Heating Delta T COPh Temp Temp Current Power Temp Flow Capacity °F °F Btu/hr Amps Watts °F °F °F °F...

  • Page 85: Performance Tables: Atf-65

    Performance Tables - ATF-65 < Preliminary > Air Heating Mode R410a 60 Hz ATF-65-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Heating Airflow Delta T COPh Temp Temp Current Power Temp Capacity °F °F Btu/hr Amps Watts °F °F...
  • Page 86 Performance Tables - ATF-65 Hydronic Heating Mode R410a 60 Hz ATF-65-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Liquid Heating Delta T COPh Temp Temp Current Power Temp Flow Capacity °F °F Btu/hr Amps Watts °F °F °F °F...

  • Page 87: Performance Tables: Atf-75

    Performance Tables - ATF-75 < Preliminary > Air Heating Mode R410a 60 Hz ATF-75-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Heating Airflow Delta T COPh Temp Temp Current Power Temp Capacity °F °F Btu/hr Amps Watts °F °F...
  • Page 88 Performance Tables - ATF-75 Hydronic Heating Mode R410a 60 Hz ATF-75-HACW-P-1T Outdoor Unit Electrical Heating Data (Indoor Unit) Evaporating Compressor Input Condensing Liquid Heating Delta T COPh Temp Temp Current Power Temp Flow Capacity °F °F Btu/hr Amps Watts °F °F °F °F...

  • Page 89: Electrical Specifications

    Electrical Specifications TABLE 38 - ATF-Series Electrical Specifications Indoor Indoor Outdoor Max. Min. Power Supply Compressor Circulators Unit Breaker Wire Code V-ø-Hz Max A Max A Amps Amps Amps 230-1-60 15.6 24.5 28.4 #8-2* ATF-45 208-3-60 11.6 20.5 23.4 #10-3* 460-3-60 14.6 16.0...

  • Page 90: Indoor Airflow Data

    Indoor Airflow Data TABLE 40 - Indoor Airflow Range for STAGE 2 (Full Load) Airflow Reduction Airflow Reduction Airflow Reduction Airflow Reduction Nominal Range Model - 20% - 15% - 10% - 5% Size 600-900 280-425 1150 900-1400 430-660 1040 1090 1500 1200-1800...

  • Page 91: Wiring Diagram (208/230-1-60)

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  • Page 92: Electrical Box Layout (208/230-1-60)

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  • Page 93: Wiring Diagram (208-3-60)

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  • Page 94: Electrical Box Layout (208-3-60)

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  • Page 95: Wiring Diagram (460-3-60)

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  • Page 96: Electrical Box Layout (460-3-60)

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  • Page 97: Ace (Outdoor Unit) Wiring Diagrams

    ACE-45/55 Wiring Diagram ACE-65/75 Wiring Diagram ECO 000266/000274: 1-Mar-2020 Page 97 002000MAN-02...

  • Page 98: Refrigeration Circuit - Air Heating Mode

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  • Page 99: Refrigeration Circuit - Air Cooling / Defrost Mode

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  • Page 100: Refrigeration Circuit - Hydronic Heating Mode

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  • Page 101: Dimensions

    Dimensions: ATF-45 (with Left Return Indoor Unit) INDOOR All dimensions in inches UNIT OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 101 002000MAN-02...
  • Page 102 Dimensions: ATF-45 (with Right Return Indoor Unit) INDOOR All dimensions in inches UNIT OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 102 002000MAN-02...
  • Page 103 Dimensions: ATF-55 (with Left Return Indoor Unit) INDOOR All dimensions in inches UNIT OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 103 002000MAN-02...
  • Page 104 Dimensions: ATF-55 (with Right Return Indoor Unit) INDOOR All dimensions in inches UNIT OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 104 002000MAN-02...
  • Page 105 Dimensions: ATF-45/55 (Leg Kit for Outdoor Unit) All dimensions in inches ECO 000266/000274: 1-Mar-2020 Page 105 002000MAN-02...
  • Page 106 Dimensions: ATF-65/75 (with Left Return Indoor Unit) INDOOR UNIT All dimensions in inches OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 106 002000MAN-02...

  • Page 107: Updating Firmware Via Pc App

    Dimensions: ATF-65/75 (with Right Return Indoor Unit) INDOOR All dimensions in inches UNIT OUTDOOR UNIT ECO 000266/000274: 1-Mar-2020 Page 107 002000MAN-02...
  • Page 108 Dimensions: ATF-65/75 (Leg Kit for Outdoor Unit) All dimensions in inches ECO 000266/000274: 1-Mar-2020 Page 108 002000MAN-02...

  • Page 109: Updating Firmware Via Jumper Pins

    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: Warranty

    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 Mounted in Indoor Unit, measures discharge pressure. LPS1/LO1 Low Pressure Sensor 1 Mounted in Indoor Unit, 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 Unused. 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. Aquastat Power (24VAC) Optional 24VAC output for aquastat used 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 This method can be used when updating newer control boards 7. Click on YES. The following message box will appear: with bootloader version 2.0. This method will not work for older control boards with bootloader version 1.0 (approx.
  • Page 116 12. Click on Load Hex File. Select the 16. Close the PIC32 program. MGL_GEN2_V326.production.hex (or higher version num- ber) file, which is in the folder you created on the Desktop. 17. WAIT APPROXIMATELY 10 SECONDS. This gives the control board time to reset, initialize and re-connect to the PC USB port.
  • Page 117 METHOD 2: Updating Firmware Using Jumper Pins This method should be used when updating older control boards 6. Turn the power back on. The control board is now in boot that have bootloader version 1.0, or where the PC App has trou- loader mode and is ready to be programmed.
  • Page 118 2. The installer must complete the “Installation Data Sheet”, have it endorsed by the owner and return it to Maritime Geothermal Ltd. within 21 days of installation of the unit. 3. It is the responsibility of the building or general contractor to supply temporary heat to the structure prior to occupancy.

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