WaterFurnace Versatec 500 084 Operation & Maintenance Manual
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WaterFurnace Versatec 500 084 Operation & Maintenance Manual

WaterFurnace Versatec 500 084 Operation & Maintenance Manual

7-30 ton 60hz
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OPERATION & MAINTENANCE
Versatec 500 7-30 Ton
OMV5-0005W
60HZ
All Versatec 500 Series models are safety listed under UL 60335-2-40 through ETL, and
performance listed with AHRI in accordance with ASHRAE/ANSI/AHRI/ISO Standard 13256-1.

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Summary of Contents for WaterFurnace Versatec 500 084

  • Page 1 OPERATION & MAINTENANCE Versatec 500 7-30 Ton OMV5-0005W 60HZ All Versatec 500 Series models are safety listed under UL 60335-2-40 through ETL, and performance listed with AHRI in accordance with ASHRAE/ANSI/AHRI/ISO Standard 13256-1.

  • 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 WARNING operations on the system, turn off main power switches death or serious injury.

  • Page 3: Table Of Contents

    Table of Contents UNIT OVERVIEW Nomenclatures ............... .6 Electrical Availability .

  • Page 4: General Installation Information

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE General Installation Information NOTICE: Do not store or install units in corrosive environments No person carrying out work in relation to a REFRIGERATING or in locations subject to temperature or humidity extremes. SYSTEM which involves exposing any pipe work shall use any Corrosive conditions and high temperature or humidity can sources of ignition in such a manner that it may lead to the risk of...

  • Page 5: Installation Space Requirements

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 64 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

    Nomenclatures Nomenclature: Versatec 500 Series Water-to-Air 7-30 Ton (V5) Drawing Number: 96D674-01 Rev: A V5AV120BD3*N5CTLAANN31NSSS 24-26 Brand Non-Standard Options V – WaterFurnace SSS – None Versatec Future Option Model N – Future 5 – 500 Series Air Coil Option Option Type 1 –...

  • Page 7: Electrical Availability

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Electrical Availability Two Stage Compressor Voltage ● ● ● 208-230/60/3 ● ● ● 460/60/3 575/60/3 ● ● ● Single Stage Compressor, Two Circuits Voltage ● ● ● ● ● 208-230/60/3 ● ● ●...

  • Page 8: Physical Data

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Physical Data Dual Capacity Compressor and Fan Two Compressors and Fan Two Compressors and Two Fans Model Compressor Scroll (1 each) Scroll (2 each) Scroll (2 each) Factory Charge R454B, oz [kg] (each circuit), Vertical Factory Charge R454B, oz [kg] (each circuit), Horizontal...

  • Page 9: Dimensional Data

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data LEFT RETURN SHOWN "N" "J" "M" "B" 2' SERVICE ACCESS "L" "H" 2' SERVICE ACCESS TOP DISCHARGE 2' SERVICE ACCESS FIELD REMOVABLE BLOWER PANEL INSERT 1.00 "G" "L" "M" "N" BLOWER ACCESS PANEL...
  • Page 10 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. "H" LEFT RETURN "F" END DISCHARGE SHOWN FIELD REMOVABLE BRACKETS AND DUCT FLANGES 2' SERVICE ACCESS DRAIN CONNECTION "J" "J" "K" "N" DUCT FLANGE "G" "L" 2' SERVICE ACCESS AIR COIL "M"...
  • Page 11 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. V*240-360 240-360 RIGHT RETURN POWER SUPPLY RIGHT RETURN 16.88 LEFT RETURN SHOWN SHOWN 3.40 8.10 1.50 16.08 48.08 71.90 2' SERVICE ACCESS 2' SERVICE ACCESS 2' SERVICE ACCESS POWER SUPPLY 20.00 RIGHT RETURN 8.10 REF...
  • Page 12 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. "H" L E F T R E T U R N "F" END DISCHARGE S H O W N FIELD REMOVABLE BRACKETS AND SIDE DISCHARGE DRAIN CONNECTIONS DUCT FLANGES FIELD REMOVABLE "J"...
  • Page 13 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. "H" R I G H T R E T U R N END DISCHARGE S H O W N FIELD REMOVABLE BRACKETS AND DUCT FLANGES "J" SIDE DISCHARGE FIELD REMOVABLE BRACKETS AND DUCT FLANGES "J"...
  • Page 14 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. U D V 0 8 4-1 8 0 T O P F L O W E C O N O M I Z E R O P T I O N L R "N"...
  • Page 15 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. U D V 0 8 4-1 8 0 T O P F L O W E C O N O M I Z E R O P T I O N R R "N"...
  • Page 16 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Dimensional Data cont. U D V 2 4 0-3 6 0 POWER SUPPLY R I G H T R E T U R N 16.88 LEFT RETURN S H O W N 3.40 8.10 1.50...

  • Page 17: Electrical Data

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

  • Page 18: Unit Weight

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Unit Weight Vertical Shipping Horizontal Shipping Model Weight Weight (318) (343) (318) (343) (336) (422) 1,060 1,101 (481) (499) 1,066 1,107 (484) (502) 1,816 (824) 1892 (858) 1970 (894) Weights are listed in lbs. (kg). 2/8/2023...

  • Page 19: Blower Performance Data

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Blower Performance Data Integrated EC Backward Curved Plenum Fan Performance Model 084 Airflow [cfm] at External Static Pressure [in. wg.] Speed 1395 1315 1215 1090 940 1100 1725 1640 1570 1485 1400 1280 1150 1015 1300 2055 1985 1925 1865 1800 1725 1645 1550 1435 1315...
  • Page 20 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Blower Performance Data cont. Model 150 Airflow [cfm] at External Static Pressure [in. wg.] Speed 900 2780 2665 2545 2400 2230 2055 1880 1650 1000 3095 2990 2885 2780 2675 2515 2345 2175 2005 1830 1590 1100 3415 3325 3230 3135 3045 2905 2795 2680 2570 2460 2155 1985 1200 3750 3660 3565 3470 3370 3275 3165 3055 2935 2805 2680 2530 2375 2195 1995 1300 4055 3980 3905 3815 3725 3635 3540 3445 3335 3215 3100 2975 2845 2700 2545 2385 2190 1995...
  • Page 21 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Blower Performance Data cont. Model 240 Airflow [cfm] at External Static Pressure [in. wg.] Speed 900 5755 5525 5290 5005 4725 5045 4075 3645 3205 2635 1000 6610 6345 6080 5815 5550 5285 5020 4725 4425 4035 3640 3155 1100 7465 7165...
  • Page 22 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Blower Performance Data cont. Setting Blower Speed - Variable Speed ECM ECM Speed Setup - These screens allow the technician to select the G, low, high, and auxiliary heat blower speed for The ABC board’s Yellow Config LED will flash the current the ECM blower motor.

  • Page 23: Antifreeze Corrections

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Antifreeze Corrections Catalog performance can be corrected for antifreeze use. Please use the following table and note the example given. Antifreeze Cooling Heating Antifreeze Type Pressure Drop % by wt Capacity Capacity EWT - degF [DegC] 90 [32.2] 30 [-1.1]...

  • Page 24: Correction Factor Tables

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Correction Factor Tables Air Flow Corrections (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 0.956...

  • Page 25: Water Quality Guidelines

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Water Quality Material Copper 90/10 Cupronickel 316 Stainless Steel Acidity/Alkalinity 7 - 9 7 - 9 7 - 9 Calcium and (Total Hardness) (Total Hardness) (Total Hardness) Scaling Magnesium Carbonate less than 350 ppm less than 350 ppm less than 350 ppm Less than 0.5 ppm (rotten egg...

  • Page 26: Operating Limits

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Operating Limits Cooling Heating Fluid Limit Min Entering Water Min Entering Brine -1.1 -6.7 Min Leaving Brine 20.0 -9.4 Min Leaving Water 20.0 Max Entering Water/Brine 50.6 32.2 Max Leaving Water/Brine 54.4 29.4 Min Differential Temperature Max Differential Temperature...

  • Page 27: Pressure Drop

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Operating Parameters cont. Second Stage Operation Cooling -- No Hot Water Generation Entering Water Water Flow Suction Pressure Discharge Water Temp Rise Superheat Subcooling Air Temp Drop °F DB Temp °F gpm/ton psig Pressure psig °F...

  • Page 28: Operation Logic Data Table

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Operation Logic Data Table Heating Cooling Operation Logic Table STG1 STG2 STG3 EMERG Fan Only STG1 STG2 Reheat Fan Only Compressor Reversing Valve Aux Heat Staged Staged Acc Relay Fan Relay (PSC) Loop Pump Hot Water 5-Speed ECM Speed...

  • Page 29: Aurora Controls Operation

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System Aurora Controls The Aurora Control System is a complete commercial comfort system that can bring all aspects of the HVAC system into one cohesive module network. The Aurora System is available in two configurations: Aurora Base Control and Aurora Advanced and Aurora Premium Control both with optional Aurora UPC for DDC applications.

  • Page 30: Other Control Features

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Aurora ‘Base’ Control Control Features Software ABC Standard Version 4.0 Single or Dual Capacity Compressors Either single or dual capacity compressors can be operated. Variable Speed ECM Blower Motor Option (If Applicable) A Variable Speed ECM blower motor can be driven directly using the onboard PWM output.
  • Page 31 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Field Selectable Options via Hardware DIP Switch (SW2) SW2-1 FP1 Selection – Low water coil temperature limit DIP Switch (SW1) – Test/Configuration Button (See SW1 setting for freeze detection. On = 30°F; Off = 15°F. Operation Table) SW2-2 FP2 Selection –...

  • Page 32: Safety Features

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Field Selectable Options via Software removed, all of the emergency heat outputs will turn off, and the ECM blower will shift to “G” speed and PSC blower motor (Selectable via the Aurora AID Tool) output will remain on.

  • Page 33: Operation Description

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Operation Description Single Compressor Cooling, 2nd Stage (Y1, Y2, 0) The compressor will be staged to full capacity 20 seconds Power Up - The unit will not operate until all the inputs and after Y2 input was received.
  • Page 34 Red (69) Red (66) Yellow (63) Yellow (70) Yellow (67) Black (71) Bro wn (64) LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Black (68) Gray (65) Black Black/White Aurora Control System cont. Blue Yellow Aurora ‘Base’ Control LED Displays Aurora Interface and Diagnostics (AID) Tool Black/White (16) Black/White (17)
  • Page 35 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Aurora Advanced and Aurora Premium Aurora Advanced And Aurora Premium Control Features Controls The Aurora ‘Advanced’ Control system expands on the capability of the Aurora ‘Base’ Control (ABC) by adding the Aurora Expansion Board (AXB).
  • Page 36 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Variable Speed Pump Performance Monitoring (Standard with Premium Controls) This input and output are provided to drive and monitor Performance Monitoring Kit includes three temperature a variable speed pump. The VS pump output is a PWM sensors, entering and leaving water, leaving air signal to drive the variable speed pump.
  • Page 37 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Aurora Control System cont. Aurora ‘Advanced’ Control LED Displays These three LEDs display the status, configuration, and fault codes for the control. These can also be read in plain English via the Aurora AID Tool.

  • Page 38: Refrigerant Circuit Guideline

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 39: System Cleaning And Flushing

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE System Cleaning and Flushing Cleaning and Flushing Refill the system with clean water. Test the system water for acidity and treat as required to leave the water slightly Prior to start up of any heat pump, the water circulating alkaline (pH 7.5 to 8.5).

  • Page 40: Open Loop Ground Water Systems

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Open Loop Ground Water Systems Typical open loop piping is shown below. Always maintain differences in flow rate from low to high, only one solenoid water pressure in the heat exchanger by placing water valve should be used.

  • Page 41: Reference Calculations

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 42: Compressor And Thermistor Resistance

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Compressor and Thermistor Resistance Compressor Resistance Chart Model 208-230/60/3 460/60/3 460/60/3 0.47-0.55 2.07-2.39 3.33-3.83 0.47-0.54 1.85-2.13 3.33-3.83 0.33-0.39 1.28-1.48 2.17-2.49 0.68-0.78 2.09-2.41 4.01-4.61 0.47-0.54 1.66-1.92 2.57-2.95 0.33-0.39 1.28-1.48 2.17-2.49 0.26-0.30 0.47-0.54 1.76-2.02 0.83 1.32 1/17/2021...

  • Page 43: Troubleshooting Checklist

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Troubleshooting Checklist Equipment will not start or operate • Return air temperature may be below 50°F. Block off air coil temporarily to improve flow of refrigerant through the system. Air • Follow the troubleshooting flow charts to find root cause. below 50°F cannot be tolerated on a continuing basis.

  • Page 44: Control Board Troubleshooting Steps

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Steps 1) General Check Other items to check when troubleshooting a water flow lockout are superheat, water flow through the coaxial heat exchanger and • If any new device was installed, or any wiring was changed, antifreeze composition.

  • Page 45: Other Faults

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Steps cont. 4) Other Faults Auxiliary Heater Does Not Function – Measure the voltage output between P3-1, P3-2, and P3-3, P3-4. The output should be 24 VDC. If ECM Motor Will Not Start voltage is not present, check thermostat operation and wiring.

  • Page 46: Control Board Troubleshooting Flow Charts

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 Put control into te Is LED3 (green) lit Is LED1 (red)
  • Page 47 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 1. When measuring 24VAC actual value may be between 18 and 30VAC. Put control into test Check 24VAC Check 24VAC...
  • Page 48 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 49 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 1. When measuring 24VAC actual value may be between 18 and 30VAC. Check 24VAC Check 24VAC Check for correct...
  • Page 50 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 Does the b jumper between R and...
  • Page 51 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 1. When measuring 24VAC actual value may be between 18 and 30VAC. There is a problem Does the blower with the thermostat or...
  • Page 52 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 53 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. 1. When measuring 24VAC actual value may be between 18 and 30VAC. Put control into test Check 24VAC Check 24VAC...

  • Page 54: Variable Speed Pump

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 55 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. Notes: 2. When measuring 240VAC actual value may be between 190 and 250VAC. 1.
  • Page 56 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 57 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Control Board Troubleshooting Flow Charts cont. Notes: 1. When measuring 24VAC actual value may be between 18 and 30VAC. Notes: 2. When measuring 240VAC actual value may be between 190 and 250VAC. 1.

  • Page 58: Continue To Next Page

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Communicating Thermostat Troubleshooting Guide Communicating Troubleshooting Guide Communicating Troubleshooting Guide TPCC32U01*, TPCM32U03A* and TPCM32U04A* TPCC32U01*, TPCM32U03A* and TPCM32U04A* (*GSR, GSM, E, YRK) Thermostat not (*GSR, GSM, E, YRK) Thermostat not communicating communicating Wire non- Wire non- Are you using a...
  • Page 59 Which of these do you have LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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...

  • Page 60: Control Board Signals

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 61 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 62 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 63: Jumping The Control Board

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 64: Emergency Heat

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 65: Reheat Mode

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 66: Preventative Maintenance

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Preventative Maintenance Water Coil Maintenance Other Maintenance Filters 1. Keep all air out of the water. An open loop system should be checked to ensure that the well head is not allowing air to Filters must be clean to obtain maximum performance.

  • Page 67: Troubleshooting

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Troubleshooting Should a major problem develop, refer to the following information for possible causes and corrective steps. If compressor won’t run: The fuse may be open or the circuit breaker is tripped. Check electrical circuits and motor windings for shorts or grounds. Investigate for possible overloading.
  • Page 68 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Troubleshooting Checklist Company Name: _________________________________ Company Phone No: ______________________________ Technician Name: ________________________________ Date: __________________________________________ Model No: ______________________________________ Serial No:_______________________________________ Owner’s Name: __________________________________ Open or Closed Loop: _____________________________ Installation Address: ______________________________ Installation Date: _________________________________ Check One Start up/Check-out for new installation Troubleshooting...

  • Page 69: Decommissioning

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 70: Refrigerant Recovery

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 71: Charging Procedures

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & 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 72 LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Notes...

  • Page 73: Revision Guide

    LARGE CAPACITY WATER-SOURCE/GEOTHERMAL HEAT PUMP OPERATION & MAINTENANCE Revision Guide Pages: Description: Date: Document Creation 29 Aug 2024...
  • Page 74 7-30 Tons Document: Operation & Maintenance Manual OMV5-0005W 10/24 ©2024 WaterFurnace International, Inc., 9000 Conservation Way, Fort Wayne, IN 46809-9794. WaterFurnace has a policy of continual product research and development and reserves the right to change design and specifications without notice.

This manual is also suitable for:

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