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Geostar Aston Series Operation & Maintenance Manual

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OPERATION & MAINTENANCE
Aston Series
Indoor Split
OMW5-0021G
R-454B / 60HZ

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Summary of Contents for Geostar Aston Series

  • Page 1 OPERATION & MAINTENANCE Aston Series Indoor Split OMW5-0021G R-454B / 60HZ...

  • Page 2: For The User

    Definition of Warnings and Symbols WARNING Indicates a situation that results in death or DANGER serious injury. WARNING: Before performing service or maintenance Indicates a situation that could result in operations on the system, turn off main power switches WARNING death or serious injury.

  • Page 3: Table Of Contents

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Table of Contents General Installation Information............4 Nomenclatures .

  • Page 4: General Installation Information

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE General Installation Information NOTICE: Do not store or install units in corrosive environments No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any or in locations subject to temperature or humidity extremes.

  • Page 5: Installation Space Requirements

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE General Installation Information Installation Space Requirements WARNING Ventilated Area: ensure that the area is in the open or that it NOTE: Equipment with refrigerant charge less than 62 oz does is adequately ventilated before breaking into the system of not require have a minimum floor area requirement and does not conducting any hot work.

  • Page 6: Nomenclatures

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Nomenclature Brand Brand G – GeoStar G – GeoStar IntelliStart Model Model 0 – None 5 – Aston 5 – Aston 1 – Yes Type Type Mitigation S – Split Water to Ref S –...

  • Page 7: Ahri Data

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE AHRI Data The performance standard AHRI/ASHRAE/ISO 13256-1 became effective January 1, 2000 and replaces ARI Standards 320, 325, and 330. This new standard has three major categories: Water Loop (comparable to ARI 320), Ground Water (ARI 325), and Ground Loop (ARI 330).
  • Page 8 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE AHRI Data cont. Ground Water Heat Pump Ground Loop Heat Pump Cooling Brine Heating Brine Flow Rate Cooling EWT 59°F Heating EWT 50°F Full Load 77°F Full Load 32°F Capacity Model Part Load 68°F Part Load 41°F Modulation Capacity...

  • Page 9: Physical Data

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Physical Data Model Compressor (1 each) Dual Capacity Scroll Factory Charge R-454B, oz [kg] [0.96] [1.25] [1.70] [1.76] [1.76] Coax and Water Piping Water Connections Size - Swivel- in [mm] [25.4] 1/2” HWG Connection Size - Stub - in [mm] [12.7] 3/8"...

  • Page 10: Dimensional Data

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Dimensional Data Cabinet Dimensions and Refrigerant Piping Connections Service Valve Water Water External Line Knock Knock Height Width Depth Voltage Pump Voltage Models Liquid 19.30 22.50 26.50 1.93 6.93 15.20 16.80 9.40 11.90 12.10 14.30...

  • Page 11: Electrical Information

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Electrical Information WARNING WARNING Do not apply any permanent inductive or capacitance During repairs to sealed components, all electrical loads to the circuit with out ensuring that this will not supplies shall be disconnected from the equipment being exceed the permissible voltage and current permitted for worked upon prior to any removal of sealed covers, etc.

  • Page 12: Air Handler Nomenclature

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Nomenclature - Air Handler 14-15 14-15 Brand Brand W – WFI W – WFI Model Model Future Option 5 – 5 Series 5 – 5 Series F – Future Type Type Mitigation B –...

  • Page 13: Physical Data - Air Handler

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Physical Data - Air Handler Air Handler Model Number (Refrigerant) Air Coil Total Face Area, ft2 [m2] 3.89 [0.36] 4.86 [0.45] 5.83 [0.54] 6.81 [0.63] 6.81 [0.63] Tube outside diameter - in. [mm] 3/8 [9.52] 3/8 [9.52] 3/8 [9.52]...

  • Page 14: Air Handler Electrical Data

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Electrical Data - Air Handler Electric Heat Minimum Heater Maximum Aux. Heat Voltage Capacity Motor Total Unit FLA Circuit Supply Rated Ampacity Fuse/HACR Model Minimum Min/ Ampacity Circuit Voltage BTUH 240v 240v 208v 240v 208v...

  • Page 15: A5D Coil Nomenclature

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Nomenclature - A5D Brand Brand Model Model Future Option F – Future Type Type Mitigation D – DX Coil D – DX Coil 1 – Sensor Mitigation* Cabinet Configuration Cabinet Configuration Future Option C –...

  • Page 16: Refrigerant Coil Compatibility

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Refrigerant Coil Compatibility Encased/ Indoor Split Outdoor Split Recommended Uncased Coil Model Model Airfl ow (CFM) A5D*024 A5D*036 1200 A5D*048 1500 A5D*060 1800 A5D*060 2000 11/11/24 Antifreeze Corrections Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given. Antifreeze Type Antifreeze % by wt Heating...

  • Page 17: Correction Factor Tables

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Correction Factor Tables Air Flow Corrections (Dual Capacity Part Load) Airflow Cooling Heating cfm Per Ton % of Nominal Total Cap Sens Cap Power Heat of Rej Htg Cap Power Heat of Ext of Clg 0.922 0.778...

  • Page 18: Heat Of Extraction/Heat Of Rejection

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Heat of Extraction/Heat of Rejection - Dual Capacity Heat of Extraction (kBtuh) Heat of Rejection (kBtuh) Model 30°F 50°F 70°F 90°F 30°F 50°F 70°F 90°F 110°F 12.3 16.3 19.4 23.3 22.2 20.8 12.9 17.0 20.7...

  • Page 19: Water Quality

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Water Quality In ground water situations where scaling could be heavy with extremely hard water, the owner should be informed or where biological growth such as iron bacteria will be that the heat exchanger may require occasional flushing. present, a closed loop system is recommended.

  • Page 20: Operating Parameters

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Operating Parameters Dual Capacity Models First Stage Operation Cooling -- No Hot Water Generation Entering Water Water Flow Suction Discharge Water Temp Air Temp Temp °F gpm/ton Superheat Subcooling Pressure psig Pressure psig Rise °F Drop °F DB 105 - 120...

  • Page 21: Pressure Drop

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Pressure Drop Dual Capacity Pressure Drop (psi) Model 30°F 50°F 70°F 90°F 110°F full load part load full load part load full load part load full load part load full load part load 9/20/24 Compressor and Thermistor Resistance Thermistor...

  • Page 22: Aurora Control System

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Aurora ‘Base’ Control Aurora ‘Advanced’ Control The Aurora ‘Advanced’ The Aurora ‘Base’ Control Control expands on the (ABC) System is a complete capability of the Aurora residential and commercial ‘Base’...
  • Page 23 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Service Device Description Aurora 'Advanced' Allows setup, monitoring and troubleshooting of any Aurora Control. For Service NOTE: Although the ABC has basic compatibility with all go to Aurora Aurora, new product features may not be available on older Toolbox for latest AID Tools.

  • Page 24: Other Control Features

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Aurora ‘Base’ Control Field Selectable Options via Hardware DIP Switch (SW1) – Test/Configuration Button (See SW1 Operation Table) Test Mode The control is placed in the test mode by holding the push button switch SW1 for 2 - 5 seconds.

  • Page 25: Safety Features

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Cycle with Blower - The accessory relay will cycle with Lockout With Emergency Heat - if the control is locked out the blower output. in the heating mode, and a Y2 or W input is received, the control will operate in the emergency heat mode while the Cycle with Compressor - The accessory relay will cycle compressor is locked out.

  • Page 26: Operation Description

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Over/Under Voltage Shutdown - An over/under voltage Emergency Heat (W) - The blower will be started on “G” condition exists when the control voltage is outside the speed, 10 seconds later the first stage of electric heat will range of 18 VAC to 30 VAC.
  • Page 27 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Aurora ‘Base’ Control LED Displays Aurora Interface and Diagnostics (AID) Tool These three LEDs display the status, configuration, and The Aurora Interface and fault codes for the control. These can also be read in plain Diagnostics (AID) Tool is English via the Aurora AID Tool.
  • Page 28 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System mode, loop temperatures may be too low to allow proper Aurora ‘Advanced’ Control Features heating of water. The control will monitor water and refrigerant The Aurora ‘Advanced’ Control system expands on the temperatures to determine if conditions are satisfactory for capability of the Aurora ‘Base’...
  • Page 29 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System • No Action Modulating Water Valve • Home Automation Fault [no lockout info only] This output is provided to drive a modulating water valve (only - Output from home automation system compatible with our 4MWVK or WWKVS) Through advanced •...
  • Page 30 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Special Modes and Applications Dual Capacity Power Adjustment Communicating Digital Thermostats Voltage Model Unit Capacity The Aurora controls system also features either mono- chromatic or color touch screen graphic display thermostats Full Load 0.99 0.99...
  • Page 31 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System entire length of the appropriate delay to be recognized as a Aurora now expands the Fault/Alarms in to several groups. fault. This fault will be ignored for the initial 2 minutes of the Faults are system critical faults to the heat pump and will compressor run time.
  • Page 32 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Aurora Control System Aurora Alarm Codes E82, ASB Sensor Problem - The gas sensor has lost communi- cation with the ASB board or has an internal error. These alarms are planned to alert the homeowner and the ser- vice personnel but will NOT effect system operation and are E97, Invalid System Configuration - ABC has not been config- for information only.

  • Page 33: Refrigerant Circuit Guideline

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Refrigerant Circuit Guideline Head Suction Compressor Air Temp. Water Temp. Symptom Superheat Subcooling Pressure Pressure Amp Draw Differential Differential Under Charged System (Possible Leak) High Over Charged System High High High Normal High Normal/Low Normal...

  • Page 34: Electrical Connections

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Electrical Connections General Accessory Relay Be sure the available power is the same voltage and phase A set of “dry” contacts has been provided to control as that shown on the unit serial plate. Line and low voltage accessory devices, such as water solenoid valves on open wiring must be done in accordance with local codes or the loop installations, electronic air cleaners, humidifiers, etc.

  • Page 35: Electronic Thermostat Installation

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Electrical Connections Pump Power Wiring Figure 11: Pump Wiring 208-230/60/1 See Figure 14 for electrical connections from control box Wire Nuts to pumps. FC1/FC2 style flow centers with fixed speed pumps connect to PB1 in the control box. If using a variable speed Optional External pump it should be connected to L1 and L2 on the AXB.
  • Page 36 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Electronic Thermostat Installation cont. Field low voltage point to point wiring: AHB Controls From Communicating To Air Handler AHB P9 To Compressor Section ABC P7 Thermostat Connection Connection Air Handler transformer must be 100VA. 1/17/17 Field low voltage point to point wiring: ASB Board to RDS Air Handler...

  • Page 37: Reference Calculations And Legend

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Reference Calculations Heating Calculations: Cooling Calculations: LWT = EWT - LWT = EWT + gpm x 500 gpm x 500 LAT = EAT + LAT(DB) = EAT(DB) - cfm x 1.08 cfm x 1.08 LC = TC - SC TH = HC + HWC S/T =...

  • Page 38: Preventative Maintenance

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Preventative Maintenance Water Coil Maintenance Other Maintenance Keep all air out of the water. An open loop system Filters should be checked to ensure that the well head is not Filters must be clean to obtain maximum performance. allowing air to infiltrate the water line.

  • Page 39: Troubleshooting Checklist

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Troubleshooting Checklist • Water flow may be restricted or inadequate. Verify in Equipment will not start or operate accordance with the pressure drop tables shown in product • Follow the troubleshooting flow charts to find root cause. install manual.

  • Page 40: Control Board Troubleshooting Steps

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Steps 1) General Check measurement from the refrigerant line. The temperature should be within +/- 2° F. If not, replace the thermistor. • If any new device was installed, or any wiring was changed, check the connections to ensure the wiring is correct, and Other items to check when troubleshooting a water flow all the wires are in good condition.
  • Page 41 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Steps cont. 4) Other Faults 5) Thermistor ECM Motor Will Not Start Disconnect the thermistor from the board and measure 1. Measure the voltage output between P13-1 and P13-5. ohms.

  • Page 42: Control Board Troubleshooting Flow Charts

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts...

  • Page 43: Compressor Will Not Start

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts Use the following flow charts to aid in troubleshooting the control board. Compressor Will Not Start Without AID Tool Compressor will not start Count the number of Is LED3 (green) lit Is LED1 (red) flashes and compare to...
  • Page 44 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. Put control into test Check 24VAC Check 24VAC Check for correct Check Compressor mode, and wait 1 between CC and across contactor...
  • Page 45 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Compressor Will Not Start With AID Tool Compressor will not start Check current fault. Connect the AID Is the control in Correct fault and try to Tool Lockout? restart.
  • Page 46 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. Check 24VAC Check 24VAC Check for correct Check Compressor In “System between CC and across contactor voltage on T1 and wiring, winding...
  • Page 47 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. ECM Blower Will Not Start Without AID Tool Blower will not start Check for correct voltage Remove P1 and place a Put control into test Is LED3 (green) Lit between orange and jumper between R and mode and wait 1...
  • Page 48 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. There is a problem Does the blower with the thermostat or start thermostat wiring Check 24VAC Is the DC voltage on P13-1 Is the low volt ECM...
  • Page 49 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. ECM Blower Will Not Start With AID Tool Blower will not start Check for correct voltage Connect AID Tool. Put control in test Is LED3 (green) Lit between orange and Remove P1 and put a mode and wait 1...
  • Page 50 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. Put control into test Check 24VAC Check 24VAC Check for correct Check Compressor mode, and wait 1 between CC and across contactor...
  • Page 51 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Loop Pump Will Not Start Variable Speed Pump Loop Pump will not start Check pump wiring to Is AXB LED1 Is AXB LED1 AXB. Check (Green) Flashing flashing fast? communication wiring from ABC to AXB.
  • Page 52 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 2. When measuring 240VAC actual value may be between 190 and 250 VAC. Check 240 VAC Did the loop pump Is voltage on VS PMP...
  • Page 53 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Loop Pump Will Not Start Non Variable Speed Pump Loop Pump will not start Check pump wiring to Is AXB LED1 Is AXB LED1 AXB. Check (Green) Flashing flashing fast? communication wiring...
  • Page 54 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 2. When measuring 240VAC actual value may be between 190 and 250 VAC. Check 240 VAC Check for 240 VAC Did the loop pump...

  • Page 55: Communicating Thermostat Troubleshooting Guide

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Communicating Thermostat Troubleshooting Guide TPCC32U01*, TPCM32U03A* and TPCM32U04A* Thermostat not (*GSR, GSM, E, YRK) communicating Wire non- Are you using a communicating 8 Is this a variable communicating wire thermostat speed unit? thermostat? to P1 terminal on the ABC board...
  • Page 56 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Communicating Thermostat Troubleshooting Guide cont. Are all Remove what is applicable not needed or add devices present what is needed. Is Issue resolved on Configure the thermostat Aurora System communicating? screen TPCM32U03A*/TPCM32U04A* Thermostat P7 on ABC Board Green Plug...

  • Page 57: Control Board Signals

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Signals To Check for 24VAC between R and C a signal and the contactor is not pulled in, check voltage across the contactor coil. If you have voltage across the contractor coil, replace the contactor.
  • Page 58 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Signals cont. To Check Operation of the Accessory Relay Put gauges on the unit to monitor high/low pressure. Place a jumper between “R” and “CC” as shown. This will bypass the safety circuit and the compressor will run whether the board is calling for it or not.
  • Page 59 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Control Board Signals cont. To Check the Condensate Sensor To Check the ECM Blower Motor Enable Signal 24 VAC VOLTS VOLTS OHMS With the AID Tool go to the “Thermostat Inputs” Menu under “Diagnostics”...

  • Page 60: Jumping The Control Board

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Jumping the Control Board Stage 1 Heating Stage 2 Heating With the AID Tool go to the “Thermostat Inputs” Menu under With the AID Tool go to the “Thermostat Inputs” Menu under “Diagnostics”...

  • Page 61: Emergency Heat

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Jumping the Control Board cont. Emergency Heat Stage 1 Cooling With the AID Tool go to the “Thermostat Inputs” Menu under With the AID Tool go to the “Thermostat Inputs” Menu under “Diagnostics”...

  • Page 62: Reheat Mode

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Jumping the Control Board cont. Reheat Mode With the AID Tool go to the “Thermostat Inputs” Menu under “Diagnostics” and over-ride the “DH” input to ON. If an AID Tool is not available remove the P1 connector to disconnect the thermostat from the board.

  • Page 63: Troubleshooting

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Troubleshooting Water Leaving Water Thermistor Coax Flow Sensor Water Flow Meter Entering Water Thermistor Premium Controls Only Water Line View of Coax Suction Suction Service Pressure Line Valves Transducer Thermistor Premium Controls Only Rev.

  • Page 64: Refrigerant Systems

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Troubleshooting cont. Aurora Control System Refrigerant Systems NOTE: Refer to the Aurora Base Control Application and To maintain sealed circuit integrity, do not install service Troubleshooting Guide and the Instruction Guide: Aurora gauges unless unit operation appears abnormal.
  • Page 65 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Troubleshooting cont. Heating Cycle Analysis Measure suction temperature here at TXV bulb in heating modes. Measure suction temperature here Volts ____ Suct PSI____ at TXV bulb in cooling modes. Amps ____ Suct sat temp____ Suct temp____ Super heat____ Lineset...
  • Page 66 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Troubleshooting cont. Single Speed/Dual Capacity Startup/Troubleshooting Form 1. Job Information Model # Job Name: Loop: Open / Closed Serial # Install Date: Hot Water Generator: Y / N 2. Flow Rate in gpm SOURCE COAX LOAD COAX (Water-to-Water) HEATING...

  • Page 67: Performance Data

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data 024 Part Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended Operation not recommended...
  • Page 68 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 024 Full Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 69 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 036 Part Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 70 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 036 Full Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow EWT °F Airfl ow Power Airfl ow Power TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh...
  • Page 71 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 048 Part Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 72 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 048 Full Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 73 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 060 Part Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow °F Airfl ow Power Airfl ow Power TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 74 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 060 Full Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh Operation not recommended...
  • Page 75 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 066 Part Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow Airfl ow Power Airfl ow Power °F TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh 10.0...
  • Page 76 INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Performance Data cont. 066 Full Load HEATING - EAT 70°F COOLING - EAT 80/67 °F Flow °F Airfl ow Power Airfl ow Power TC kBtuh SC kBtuh kBtuh kBtuh °F kBtuh Ratio kBtuh kBtuh 12.0...

  • Page 77: Service Parts List

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Service Parts List Dual Capacity Split Units Compressor 34P749-01 34P751-01 34P753-01 34P755-01 34P756-01 Run Capacitor 16P008D18K 16P008D21K 16P008D31K 16P008D32K 16P008D34K Power Harness 11P781-01 Solenoid Harness 11P782-02 Accumulator 36P509-02 36P509-01 Coax 62P594-01 62I638-01 62I628-01 62P555-01 33P628-06...

  • Page 78: Decommissioning

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refriger- ants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant.

  • Page 79: Refrigerant Recovery

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Refrigerant Recovery When removing refrigerant from a system, either for servicing The recovered refrigerant shall be processed according to or decommissioning, it is recommended good practice that all local legislation in the correct recovery cylinder, and the refrigerants are removed safely.

  • Page 80: Charging Procedures

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Charging Procedures In addition to conventional charging procedures, the following requirements shall be followed. • Ensure that contamination of different refrigerants does not occur when using charging equipment. • Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.

  • Page 81: Revision Guide

    INDOOR SPLIT GEOTHERMAL HEAT PUMP OPERATION AND MAINTENANCE Revision Guide Pages: Description: Date: Document Creation 4 March 2024...
  • Page 82 *OMW5-0021G* Product: Aston Series - Indoor Split Type: Geothermal Heat Pumps Size: 2-6 Ton Dual Capacity Document Type: Operation & Maintenance Part Number: OMW5-0021G Release Date: 012/24 ©2024 The manufacturer has a policy of continual product research and development and reserves the right to change design and specifi cations without notice.

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