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Maritime Geothermal ATF-45 Installation And Service Manual

Air source triple function heat pump two-stage r410a 60hz model sizes 45-75 atf-series;
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Installation and Service Manual
ATF-Series
Air Source Triple Function 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-01
(506) 756-8135
1-Jun-2018
Page 1
002000MAN-01
1-June-2018

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  • Page 1 Installation and Service Manual ATF-Series Air Source Triple Function 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-01 (506) 756-8135 1-Jun-2018 Page 1 002000MAN-01 1-June-2018...

  • 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 electrical shock. WARNING: Before performing service or maintenance on the system, ensure all power sources are DISCONNECTED.
  • Page 3 ACE-65 ACE-75 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 . 1-Jun-2018 Page 3...

  • Page 4: Table Of Contents

    Table of Contents Tables & Documents Operation ..........5 ............... 32 BACnet Control ..............32 ATF System Description ........6 Air Thermostat Operation ............32 General Overview ..............6 Hydronic Temperature Control ..........32 1. Air Heating Mode ..............6 1.

  • Page 5: Tables & Documents

    Tables & Documents Tables Table 1 - Heat Pump Sizing ..........................8 Table 2 - Plenum Heater Sizing ........................... 8 Table 3 - Power Supply Connections ........................ 13 Table 4 - Outdoor Unit Power Supply Connections ................... 13 Table 5 - Plenum Heater Signal Connections ....................13 Table 6 - Indoor Loop Circulator Connections ....................

  • Page 6: Atf System Description

    ATF System Description 2. Hydronic (Water) Heating Mode General Overview In hydronic heating mode, the heat pump heats hot water The ATF-Series heat pump is an air source heat pump in the buffer tank. EEV, outdoor fan, and defrost operation are that can heat or cool via a forced air duct system, as well as the same as in air heating mode.

  • Page 7: Mode & Priority Selection

    Mode and Priority Selection Factory Options The indoor unit can be ordered as a left or right hand re- The heat pump can be set to Air or Hydronic priority. Units turn from the factory. This must be specified at time of order as are shipped set up for air priority.

  • Page 8: Atf Sizing

    ATF Sizing Heat Pump Sizing Plenum Heater Sizing TABLE 1 contains a guideline to the size of home each Plenum heaters are available as accessories in 5, 7, 10, air source heat pump size can handle. 15 and 20kW sizes. Choose a size that covers 100% of the coldest day heat load, according to the heat loss analysis men- tioned in the last section.

  • Page 9: Installation Basics

    A heating system cannot be expected to produce an even temperature throughout the house when it is OPTIONAL FROM MARITIME GEOTHERMAL located at one end of the structure and the air is transmitted with • ANTI-VIBRATION PAD FOR UNDER UNIT uninsulated metal ductwork.

  • Page 10: Indoor Unit Blower Outlet Orientation

    Two different leg kits which add either 15” (38 cm) or 30” (76 cm) of additional height are available as an accessory from Maritime Geothermal Ltd. To attach the legs, first remove the three bolts with flat washers that hold each foot plate in place. Leaving the foot...

  • Page 11: Average Max. Snow Depth Map - Canada

    Average Maximum Snow Depth - Canada (1979-1997) Source: Natural Resources Canada 1-Jun-2018 Page 11 002000MAN-01...

  • Page 12: 001915Inf - Internal Plenum Heater Installation

    002000MAN-01 Page 12 1-Jun-2018...

  • Page 13: Wiring

    Wiring Indoor Unit Power Supply Connections the size of wire for the connections, as well as the recommend- ed breaker size. Power supply for the heat pump from the breaker panel is supplied to the indoor unit. The unit has a concentric 1.093” / Auxiliary Plenum Heater: 0.875”...

  • Page 14: Outdoor Unit: Signal Connections

    TABLE 7 - Control Transformer TABLE 9 - Air Thermostat Connections Voltage Low Voltage Circuit Protection Signal Description (1) 208/230-1-60 Resettable breaker on transformer 24VAC common (ground) (2) 208-3-60 Resettable breaker on transformer 24VAC hot (4) 460-3-60 Primary / Secondary fuses Fan low speed (for air recirculation) IMPORTANT NOTE: For 208/230VAC-1-60 Heat pump stage 1...

  • Page 15: 002071Cdg - Typical Gen2 Thermostat Connections

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  • Page 16: 002304Cdg - Typical Atf Wiring

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  • Page 17: 002067Cdg - Typ. Heating Only Zone Wiring (Setpoint)

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  • Page 18: 002069Cdg - Typ. Htg. Only Zone Wiring (Hardwired)

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  • Page 19: Piping

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

  • Page 20: 002305Pdg - Typical Piping Connections - Atf

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  • Page 21: 001046Pdg - Typical Buffer Tank Configuration: 4 Port

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  • Page 22: 001981Pdg - Typical Buffer Tank Configuration: 2 Port

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  • Page 23: 000530Pdg - Typical Zone Types

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  • Page 24: 001055Pdg - Connection To On-Demand Dhw Tank

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  • Page 25: 000970Pdg - Connection To Dhw Pre-Heat Tank

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  • Page 26: 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 27: 002249Pdg - Typical Duct & Condensate Connections

    1-Jun-2018 Page 27 002000MAN-01...

  • Page 28: Duct Sizing Guide

    TABLE 13 - 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 29: Ace-Series Outdoor Unit Line Set

    ACE-Series Outdoor Unit Line Set Line Set Interconnect Tubing Pipe Insulation The indoor unit connections for the interconnect line set All line set piping between the indoor and outdoor units are brass service valves with flared fittings. should be insulated with 3/8” thick closed cell pipe insulation to prevent condensation and dripping onto floors or walls during Copper flare to solder adapters are included with the the heating season.

  • Page 30: Charging The System

    Charging the System The indoor unit is pre-charged for linesets up to 20 ft long. Once the system has been vacuumed, if extra refrigerant is required due to the length of the lineset, it may be added before opening the access valves. Close off the charge valve on the refrigeration manifold set and disconnect the vacuum pump.

  • Page 31: 002250Cdg - Typical Outdoor Unit Line Set Connections

    1-Jun-2018 Page 31 002000MAN-01...

  • Page 32: 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 33: Top Up S1 Function

    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 To stay in the compressor’s operating envelope, the actual maximum water temperature will be reduced at colder outdoor temperatures: TABLE 19 - Maximum Output Temperature...

  • Page 34: Hydronic Heating: Signals Control

    2. Hydronic Heating: Signals Control In this control method, hydronic heating demand comes from an external device, like a 2-stage aquastat, combination of aquastats, or other controller with a dry contact that relays a 24VAC signal. See Wiring section. The following table shows typical settings for the aquastat. With these settings, stage 1 will activate when the tank tempera- ture reaches the activation point.

  • Page 35: 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 36 This menu handles all of the operational viewing screens. Clicking on the View submenus will open the page in View Menu: 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 37 View—Alarms: The alarms page has three tabs; the first shows the current alarm status, number of alarms, high and low re- frigeration 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 hard- ware faults.
  • Page 38 Master Alarm occurs when any alarm occurs. This button will erase all alarms and alarm counters, including a permanent alarm. Low Pressure cut out. High Pressure cut out. Greyed out alarms are not applicable to the system. Short Cycle Timer counts down time until the next com- pressor start is allowed.
  • Page 39 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 40 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. Hit the Outdoor Reset button (shown here by the red arrow) to expand screen to show the right-hand panel.
  • Page 41 View—Digital Inputs: Shows the digital inputs and their in- View—Digital Outputs: Shows the digital outputs and their dividual status (ON/OFF). They may be individually controlled individual status (ON/OFF). They may be individually controlled when in Manual Override Mode in order to facilitate trouble when in Manual Override Mode in order to facilitate trouble shooting.
  • Page 42 This menu is a list of the available graphs. Graphs are real-time and show a time stamp of when the recording start- Graphs Menu: 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 43 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. Refresh Graph Start Graph Printed...
  • Page 44 This is a list of the various tools are used for system setup and monitoring. Tools Menu: 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. Model Configura- Enable/Disable the compres- Firmware Revision can...
  • Page 45 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 automatically selected will be greyed out. Model Configuration: These are used to select the type of heat pump the control board is installed in.
  • Page 46 The screenshot below shows the Alarms and Delays tab of the Configuration Page. Click on the UP/DOWN arrows to change the value, noting that values have both a low and high limit. Once values have been selected, click on APPLY to save the changes. A confirmation window will appear (see below);...
  • Page 47 NOTE: Generally there is no need for calibration. Tools—Calibration: The suction and discharge pressures may be calibrated in increments/decrements 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/decrements of 0.1F. There is an AUTO CALIBRATION routine in the program that continually calibrates the temperatures sensors against an on board reference by applying an offset to the temperature sensors.
  • Page 48 Tools—Datalogging: This will display the on-board datalogging screen. The datalog rate is set via the dropdown box at the top right of the PC App. A log will be taken at the datalog rate whenever the system is operating or the system is off and the SC Timer is counting down.
  • Page 49 Tools—MODBUS: For Future Use. WARNING! The Parameters page is for advanced use only. Changing parameter values can cause the Tools—Parameters: 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 50 This page shows all internal timers by name along with their current values. Tools—SYSTEM TIMERS: 002000MAN-01 Page 50 1-Jun-2018...

  • Page 51: 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 52 Main Menu Continued ENTER ENTER ENTER ENTER Description (From Main) (First Press) (Second Press) (Third Press) Puts EEV in Auto mode EEV Control — EEV1 (Local) — Auto/Manual — Auto Puts EEV in Manual mode — Manual Sets EEV to manual position —...

  • Page 53: 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 54: Table 22 - Bacnet Objects - Data (Read Only)

    TABLE 22 - BACnet OBJECTS - DATA (READ ONLY) Name Data Type Property Units Description LPS1 Analog Input Present Value PSIG (kPa) Low pressure value (suction pressure) HPS1 Analog Input Present Value PSIG (kPa) High pressure value (discharge pressure) EVAP1 Analog Input Present Value degF (degC)

  • Page 55: 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 56 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. 002000MAN-01...

  • Page 57: 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. 1-Jun-2018 Page 57 002000MAN-01...

  • Page 58: 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 59: 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 60 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 61: Compressor Troubleshooting

    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 62 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 63 OPERATION TROUBLESHOOTING - WATER HEATING MODE Fault Possible Cause Verification Recommended Action High suction EEV stuck open. Manually adjusting the EEV does Go to EEV troubleshooting sec- pressure not affect the superheat or the suc- tion. (may appear to tion pressure. Low super heat and not be pumping) discharge pressure.
  • Page 64 OPERATION TROUBLESHOOTING - AIR 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 65 OPERATION TROUBLESHOOTING - AIR HEATING MODE Fault Possible Cause Verification Recommended Action High suction EEV stuck open. Manually adjusting the EEV does Go to EEV troubleshooting sec- pressure not affect the superheat or the suc- tion. (may appear to tion pressure. Low super heat and not be pumping) discharge pressure.
  • Page 66 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 67 INDOOR FAN/BLOWER TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Low indoor 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 0.5 inH2o for 1/2HP heating mode, it should not be motors and 0.7 inH2o for 1HP...
  • Page 68 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 69 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 70: Troubleshooting Tools

    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 71: 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 72: Model Specific Information

    Table 25 - Shipping Information (ACE 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) 36 (91) 70 (178) 45 (114)

  • Page 73: Standard Capacity Ratings

    Standard Capacity Ratings < Preliminary > Standard CSA C656 (ARI 210-240). 60 Hz Table 31 - Standard Capacity Ratings - Air Heating Indoor Air - Outdoor Air 47°F (8.3°C) - Outdoor Air 35°F (1.7°C) - Outdoor Air 17°F (-8.3°C) 70°F (21°C) db / 60°F (15.6°C) wb Indoor Input Input...

  • Page 74: Performance Tables

    < Preliminary > Performance Tables - ATF-45 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...
  • Page 75 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...
  • Page 76 < Preliminary > Performance Tables - ATF-55 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 77 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 78 < Preliminary > Performance Tables - ATF-65 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 79 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 80 < Preliminary > Performance Tables - ATF-75 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 81 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 82: Electrical Specifications

    Power Supply Compressor Circulators Unit Breaker Wire Code V-ø-Hz Max A Max A Amps Amps Amps 230-1-60 15.3 24.2 28.0 #8-2* ATF-45 208-3-60 11.6 20.5 23.4 #10-3* 460-3-60 14.6 16.0 #12-4 230-1-60 21.2 31.6 36.9 #8-2* ATF-55 208-3-60 14.0 24.4 27.9...

  • Page 83: Airflow Data

    Airflow Data TABLE 36 - Airflow Range for STAGE 2 (Full Load) Nominal Range AR - 20% AR - 15% AR - 10% AR - 5% Model 600-950 283-448 1200 950-1400 448-661 1020 1080 1140 1500 1200-1700 566-802 1200 1275 1350 1425 1900...

  • Page 84: Wiring Diagram (208/230-1-60)

    Wiring Diagram (208/230-1-60) 002000MAN-01 Page 84 1-Jun-2018...

  • Page 85: Electrical Box Layout (208/230-1-60)

    Electrical Box Layout (208/230-1-60) 1-Jun-2018 Page 85 002000MAN-01...

  • Page 86: Wiring Diagram (208-3-60)

    Wiring Diagram (208-3-60) 002000MAN-01 Page 86 1-Jun-2018...

  • Page 87: Electrical Box Layout (208-3-60)

    Electrical Box Layout (208-3-60) 1-Jun-2018 Page 87 002000MAN-01...

  • Page 88: Wiring Diagram (460-3-60)

    Wiring Diagram (460-3-60) 002000MAN-01 Page 88 1-Jun-2018...

  • Page 89: Electrical Box Layout (460-3-60)

    Electrical Box Layout (460-3-60) 1-Jun-2018 Page 89 002000MAN-01...

  • Page 90: Ace-45/55 Wiring Diagram

    ACE-45/55 Wiring Diagram ACE-65/75 Wiring Diagram 002000MAN-01 Page 90 1-Jun-2018...

  • Page 91: Atf-Series Refrigeration Circuit - Air Heating Mode

    1-Jun-2018 Page 91 002000MAN-01...

  • Page 92: Atf-Series Refrigeration Circuit - Air Cooling Mode

    002000MAN-01 Page 92 1-Jun-2018...

  • Page 93: Atf-Series Refrigeration Circuit - Hydronic Heating Mode

    1-Jun-2018 Page 93 002000MAN-01...

  • Page 94: Dimensions

    Dimensions: ATF-45 Left Return OUTDOOR UNIT (ACE-45) INDOOR UNIT 002000MAN-01 Page 94 1-Jun-2018...
  • Page 95 Dimensions: ATF-45 Right Return OUTDOOR UNIT (ACE-45) INDOOR UNIT 1-Jun-2018 Page 95 002000MAN-01...
  • Page 96 Dimensions: ATF-55 Left Return OUTDOOR UNIT (ACE-55) INDOOR UNIT 002000MAN-01 Page 96 1-Jun-2018...
  • Page 97 Dimensions: ATF-55 Right Return OUTDOOR UNIT (ACE-55) INDOOR UNIT 1-Jun-2018 Page 97 002000MAN-01...
  • Page 98 Dimensions: ATF-65/75 Left Return OUTDOOR UNIT (ACE-65/75) Note: ACE-65 may be a 1-fan version of that shown here. INDOOR UNIT 002000MAN-01 Page 98 1-Jun-2018...
  • Page 99 Dimensions: ATF-65/75 Right Return OUTDOOR UNIT (ACE-65/75) Note: ACE-65 may be a 1-fan version of that shown here. INDOOR UNIT 1-Jun-2018 Page 99 002000MAN-01...
  • Page 100 ACE-45/55 ACE-65/75 002000MAN-01 Page 100 1-Jun-2018...

  • Page 101: 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 102: 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 Mounted in Indoor Unit, measures discharge pressure. LPS1/LO1 Low Pressure Sensor 1 Mounted in Indoor Unit, measures suction pressure.

  • Page 103: 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 104: 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 105: 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 106: 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 107: 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 108 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 109: Updating Firmware Via Jumper Pins

    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 110: Warranty

    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.

This manual is also suitable for:

Atf-65Atf-55Atf-75

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