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Troubleshooting
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Summary of Contents for Enertech WD240
- Page 1 Installation & Operations Manual WD 20, 30 TON MODELS WATER-TO-WATER HEAT PUMPS Revision D 20D814-10NN 20D814-10NN...
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Page 2: Table Of Contents
Troubleshooting Tips ..............................24-26 Refrigeration Troubleshooting ............................27 Superheat/Subcooling Conditions ............................ 27 Typical R-410A Unit Superheat/Subcooling Values ......................27 Section 11: Warranty Forms & Revision Table Claim Form ..................................28 Registration Form ................................29 Revision Table ................................30 Enertech Global IOM, WD Models... -
Page 3: Section 1: Model Nomenclature And Ahri Performance Data
AHRI Ground Loop and Ground Water Heat Pump Performance Data HEATING COOLING MODELS APPLICATION Mbtu/hr Mbtu/hr ENERTECH GLOBAL, LLC 2506 S. ELM STREET Ground Loop Full Load 222,400 240,700 15.2 20 TON GREENVILLE, IL 62246 ... -
Page 4: Section 2: Installation Introduction
Removal and Disposal Note: Notify Enertech Global, LLC shipping department of all damages within 15 days. It is the responsibility of the purchaser All Geothermal units removed from service should have to file all necessary claims with the freight company. -
Page 5: Pre-Installation Steps
⚠ CAUTION ⚠ Before drilling or driving any screws into cabinet, check to be sure the screw will not hit any internal parts or refrigerant lines. IOM, WD Models Enertech Global... -
Page 6: Section 3: Installation Considerations
Pre-Installation Before you fully install the geothermal equipment, it is Enertech Global has set forth this policy to ensure installations recommended you go through this quick checklist before of Enertech Global geothermal systems are done safely and placing the equipment. -
Page 7: Guidelines For Heating Mode Operation
The illustration below shows the parameters which are safe for compressor operation. Based on the leaving load Enertech recommends the aquastat setting not be set above water of 120°F, the loop would have to maintain 35°F to 110°F for the storage tank temperature. Excessive vibration... -
Page 8: Section 4: Unit Data Information
2.0 MPT 2.0 MPT 2.0 MPT 30 Ton 2.0 MPT 2.0 MPT 2.0 MPT 2.0 MPT Physical Data 20 Ton 30 Ton Compressor Compliant Scroll Expansion Device Thermostatic Transformer (VA) 50 or 55 Weight (lbs) 1010 Enertech Global IOM, WD Models... -
Page 9: Unit Electrical Data
Section 4: Unit Data Information Unit Electrical Data 20D237‐19NN: WD240/WD360 Electrical Data Ext. 60 Hz OR (50 Hz Voltage Compressor Loop Total Power Model Code/ HWG Pump Circuit Brkr Pump Unit FLA Option AMPS HACR Volts Phase 208/230 239.0 ea. 33.3 ea. 66.6 74.9... -
Page 10: Section 5: Unit Piping Installation Water Quality
Secondary heat exchangers are required for applications not meeting the requirements shown above. 4. Saltwater applications (approx. 25,000 ppm) require secondary heat exchangers due to copper piping between the heat exchanger and the unit fittings. 5. Filter for maximum of 600 micron size. Enertech Global IOM, WD Models... -
Page 11: Section 6: Antifreeze Antifreeze Overview
Convenience: Is the antifreeze available and easy to transport hydrometer and specific gravity chart (Figure 6) to determine if and install? the correct amount of antifreeze was added. Codes: Will the brine meet local and state/provincial codes? IOM, WD Models Enertech Global... -
Page 12: Antifreeze Percentages By Volume
100% alcohol solutions. (Ethanol) Methanol Propylene Glycol Geothermal Mix according to manufacturer’s directions Transfer Fluid on container label (GTF) Antifreeze solutions are shown in pure form - not premixed GTF is a premixed Methanol solution Enertech Global IOM, WD Models... -
Page 13: Section 7: Controls Features
Features Changeover from heating to cooling can be achieved in two ways: Enertech Global geothermal heat pump controls leverage a 1. A manual toggle switch to select the heating or the modular approach for controlling heat pump operation. The cooling hydronic control (Aquastat), or. - Page 14 28.61 0.59 next page for Warning and Alert Codes, as well as the DIP 10.00 0.54 Switch Settings for these modules. Additional information can be found on AE Bulletin 1408 on the Emerson-Climate web- site. Enertech Global IOM, WD Models...
- Page 15 FLASH DGT > 220F LOCKOUT FLASH FLASH‐18 PULSES LOCKOUT BOARD DIP SWITCHES DIP SWITCH LCT & SCT SENSORS AND 'FS' TERMINALS FS' TERMINALS MONITORED FOR FLOW MONITORED FOR FLOW OPEN LOOP MODE‐ 30F SETTING FOR AFRZ CLOSED LOOP MODE‐ 12F SETTING FOR SCT OPERATES IN NORMAL MODE WITH OPERATES IN TEST MODE WITH DELAYS SPED UP TEST STANDARD DELAYS O/ U FEATURE IS INACTIVE FEATURE IS ACTIVE NOTES: 1. WHEN TEST MODE DIP SWITCH IS 'ON', GREEN STATUS LED WILL BE OFF. 2. THE LOAD/ AIR COIL FREEZE PROTECTION SENSOR IS LOCATED BETWEEN THE TXV AND LOAD COAX IN WATER‐TO‐WATER UNITS, AND BETWEEN THE TXV AND AIR COIL IN WATER‐TO‐AIR UNITS. 3. NOT ALL MODELS HAVE THIS FEATURE. 4. THIS FAULT INDICATES A BAD SENSOR (OPEN, SHORTED, DISCONNECTED, OR INVALID VALUE). 5. THE CHECK TO DETERMINE IF THE LCT AND SCT SENSORS ARE SWAPPED, OCCURS IN TEST MODE ONLY, 120 SECONDS AFTER THE 'CC' TERMINAL IS ENERGIZED. 6. THIS FAULT/ LOCKOUT INDICATES THAT THE DISCHARGE GAS TEMPERATURE IS ABOVE 220°F. 7. UNITS WITHOUT DESUPERHEATER (HWG) HAVE A 10K RESISTOR IN POSITION T3 (DLWT). 8. CONNECT A MULTIMETER ACROSS THE 'L' AND 'C' TERMINALS TO CHECK FOR 24 VAC LOCKOUT SIGNAL. THERMOSTAT TURNS ON/FLASHES 'CALL FOR SERVICE' INDICATION. 9. THE 'L' TERMINAL CONTROLS A FAULT LED AT THE THERMOSTAT OR DRIVES AN AUXILLIARY FAULT RELAY. 10. UNITS THAT DO NOT CONTAIN A FLOW SWITCH, WILL CONTAIN A JUMPER BETWEEN THE 'FS1' AND 'FS2' TERMINALS. 11. FSW DIP SWITCH SHOULD NOT BE MODIFIED IN THE FIELD. FACTORY SETTING SHOULD BE MAINTAINED (OFF). REV D. 03/19/18 IOM, WD Models Enertech Global...
- Page 16 FLOW SWITCH under adverse conditions, and therefore should not be turned OVERFLOW off without contacting Enertech technical services. An over/ Load/Source Temperature Sensing (FSW) under voltage condition could cause premature component When the DIP switch FSW is OFF, the board operates in failure or damage to the unit controls.
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Page 17: Sequence Of Operation
Components are sequenced and delayed for reduction in surge current, and to reduce startup noise of the system. The WD240 and 360 have staged compressors controlled with separate Y1 and Y2 inputs. The CC output of the controller energizes the first compressor contactor and begins the time-out relay (adjustable 10 to 1000 seconds;... -
Page 18: Wd 240 Series Wiring Diagram
Section 8: Wiring Diagrams WD 240 Series Wiring Diagram Enertech Global IOM, WD Models... -
Page 19: Wd 360 Series Wiring Diagram
Section 8: Wiring Diagrams WD 360 Series Wiring Diagram IOM, WD Models Enertech Global... -
Page 20: Section 9: Equipment Start-Up Procedures
Auxiliary Heat Electrical Data Heating Line Voltage Total Amperage (Full kW - All Stages) Wire Size Breaker Size CFM = (Watts X 3.413) ÷ (Air Temp. Difference X 1.08) Watts = Volts X Auxiliary Heater Amps Installer/Technician:____________________________________________ Date:________________________ Enertech Global IOM, WD Models... -
Page 21: Equipment Start-Up Process
5. Check the source water difference. temperature in and out at the P/T ports (use insertion probe). Allow 10 minutes of operation before recording temperature drop. 6. Calculate the heat of extraction or heat of rejection. IOM, WD Models Enertech Global... -
Page 22: Pressure Drop Table
110 °F 90 °F 70 °F 50 °F 110 °F 90 °F 70 °F 50 °F 25 °F 110 °F 90 °F 70 °F 50 °F 25 °F 110 °F 90 °F 70 °F 50 °F 25 °F 37.5 Source Pressure 52.5 Drop WD240 37.5 Load 52.5 Pressure Drop... -
Page 23: Heating & Cooling Calculations Table
2. Extrapolation data down to 25°F for heating and interpolation between EST & GPM data is permissible. 3. EWT (Entering Water Temperature) is also called EST (Entering Source Temperature). 4. Load flow rate is the same as the nominal source flow rate, approximately 3 GPM per ton. IOM, WD Models Enertech Global... -
Page 24: Section 10: Troubleshooting
ECM Temporary Motor Replacement Heat Of Extraction and Rejection ECM Motor Troubleshooting Measuring Subcooling and Superheat Troubleshooting a TXV Compressor Troubleshooting Variable Speed Flow Centers Return Conversion for a XT or CT Enertech Global IOM, WD Models... - Page 25 F: Water Heat Exchanger Freezes In Heating Mode Water flow Low water flow. Increase flow. See F. No water flow. Flow Switch Check switch. If defective, replace. G: Excessive Head Pressure In Cooling Mode Inadequate water Low water flow, increase flow. flow IOM, WD Models Enertech Global...
- Page 26 't p u m p o f th e re v e rs in g re p la c e c o m p re s s o r. v a lv e . Enertech Global IOM, WD Models...
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Page 27: Refrigeration Troubleshooting
Pressure Cooling Heat Temperature Temperature (PSIG) (PSIG) Drop (°F-DB) Rise (°F) 220-235 120-130 10-16 12-20 20-26 19-23 190-210 120-130 10-16 12-20 20-26 9-12 280-300 125-135 8-14 10-16 19-24 18-22 250-270 125-135 8-14 10-16 19-24 9-12 IOM, WD Models Enertech Global... -
Page 28: Section 11: Warranty Forms & Revision Table
3) Outsourced warranty replacement parts will be reimbursed in the form of credit for the part only. Credit will be no more than the standard equivalent part cost through Enertech. 4) Factory pre-approval is required for anything outside the scope of this document. -
Page 29: Registration Form
How would you rate your overall satisfaction with your installing geothermal contractor? 1 (Very Dissatisfied) 10 (Very Satisfied) MAIL THIS FORM TO: EMAIL THIS FORM TO: FAX THIS FORM TO: ENERTECH GLOBAL LLC WARRANTY@ENERTECHGEO.COM ENERTECH GLOBAL LLC 2506 SOUTH ELM STREET 618.664.4597 GREENVILLE, IL 62246 REGISTER ONLINE AT: warranty-registration.enertechgeo.com... -
Page 30: Revision Table
Section 11: Warranty Forms & Revision Table Revision Table Date Description of Revision Page WD240-360 Wiring Diagram updated 18, 19 WD 240-360 Rev. D, Nomenclature added 06JUL2020 WD 240-360 IOM created Enertech Global IOM, WD Models... - Page 31 This Page Intentionally Left Blank IOM, WD Models Enertech Global...
- Page 32 Customer Service department at info@enertechgeo.com. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely Enertech Global’s opinion or commendation of its products.
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