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hydron WT036 Engineering Data And Installation Manual

Water-to-water heat pumps & hydronic air handlers
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Engineering Data and

Installation Manual

WT MODELS WATER-TO-WATER HEAT PUMPS & HYDRONIC AIR HANDLERS
REVISION: B
20D082-08NN
20D082-08NN

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  • Page 1: Installation Manual

    Engineering Data and Installation Manual WT MODELS WATER-TO-WATER HEAT PUMPS & HYDRONIC AIR HANDLERS REVISION: B 20D082-08NN 20D082-08NN...

  • Page 3: Table Of Contents

    Table of Contents: Section 1: Model Nomenclature Model Nomenclature........................4 - 5 Section 2: Installation Introduction Introduction, Pre-Installation, Components ................6 - 7 Section 3: Installation Considerations Installation Considerations ......................8 Heating Mode Operation Considerations...................9 Buffer Tank Sizing and Usage.......................10 Section 4: Installation Unit and Air Handler Placement ....................11 Unit Dimensional Data ......................12 - 14 (Water-to-Water Units, Hydronic Air Handlers/”A”...

  • Page 4: Model Nomenclature

    Section 1: WT Water-To-Water Unit Model Nomenclature Section 1: Air Handler Model Nomenclature Enertech Global WT Models, Rev.: B...
  • Page 5 Section 1: Uncased ”A” Coil Model Nomenclature Section 1: Cased”A” Coil Model Nomenclature WT Models, Rev.: B Enertech Global...

  • Page 6: Section 2: Installation Introduction

    Section 2: Installation Introduction INTRODUCTION equivalent protective covering. Cap or recap This geothermal heat pump provides heated unit connections and all piping until unit is water and chilled water as well as optional installed. Precautions must be taken to avoid domestic water heating capability.
  • Page 7 Section 2: Installation Introduction Components Before unit start-up, read all manuals and become familiar with unit components and operation. Thoroughly check the unit Master Contactor: Energizes Compressor before operating. and optional Hydronic Pump and/or For A-Coil installations, it is recommended Desuperheater pump package.

  • Page 8: Section 3: Installation Considerations

    Section 3: Installation Considerations Consumer Instructions: Dealer should Thermostat: Thermostats should be installed instruct the consumer in proper operation, approximately 54 inches off the floor on an maintenance, filter replacements, thermostat inside wall in the return air pattern and where and indicator lights.

  • Page 9: Heating Mode Operation Considerations

    Section 3: Operation Considerations Guidelines For Heating Mode Operation For Water-To-Water Units Using Scroll Compressors Enertech recommends the aquastat setting not be set above 110°F for the storage tank temperature. Excessive vibration and part failure can occur at higher than recommended temperature settings.

  • Page 10: Buffer Tank Sizing And Usage

    Section 3: Buffer Tanks BUFFER TANKS stage. Requirements for storage are less Virtually all water-to-water heat pumps used according to the manufacturer of the HSS series for hydronic applications require a buffer tank non-pressurized buffer tank. Using the same to prevent equipment short cycling, and to conditions for maximum heating and cooling allow lower flow rates through the water-to- capacity mentioned above, non-pressurized...

  • Page 11: Unit And Air Handler Placement

    Section 4: Unit Placement UNIT PLACEMENT UPFLOW APPLICATION When installing a geothermal heating and In an upflow installation the discharge outlet cooling unit, there are several items the installer is at the top. Care should be taken to insure should consider before placing the equipment. unit is level to permit proper condensate drainage.
  • Page 12 Section 4: Air Handler Dimensional and Physical Data FRONT VIEW FRONT VIEW Water Connections, Hydronic (Sweat) Water Connections, Hydronic (Sweat) Primary Drain Alternate Drain Primary Drain Connection Return Alternate Drain Connection Connection Return (Horizontal) Connection (Horizontal) (Horizontal) (Horizontal) Primary Drain Supply Alternate Drain Primary Drain...

  • Page 13: Section 4: Installation

    Section 4: Cased and Uncased “A” Coil Dimensional and Physical Data Drain Pan Drain Pan PAN REMOVED FOR CLARITY Front Side Back All Dimensions In Inches Water Size Weight Connection Model (Tons) (lbs) Size (Sweat, “L” Copper) 16.63 19.00 18.5 16.00 4.00 8.67...

  • Page 14: Unit Dimensional Data

    Section 4: Unit Dimensional Data Out (Source Loop) 16.000 7.500 Out (Load Loop) 2.000 Out (Load Loop) Out (Source Loop) In (Source Loop) In (Load Loop) H & I HWG Water Out HWG Water In In (Load Loop) FRONT VIEW F &...

  • Page 15: Section 5: Unit Piping Installation

    Section 5: Unit Piping Installation Open Loop Piping velocity noise. Always double check flow rate Placement of the components for an open at the P/T ports to make sure the ball valve loop system are important when considering adjustments have not lowered water flow too water quality and long term maintenance.

  • Page 16: Section 5: Unit Piping Installation

    Section 5: Unit Piping Installation Water Quality ionizing removes both corrosive and hardness The quality of the water used in geothermal ions. Distilled water and zeolite softened water systems is very important. In closed loop systems are also acceptable. Softened water, although the dilution water (water mixed with antifreeze) free of hardness ions, may actually have must be of high quality to ensure adequate...

  • Page 17: Section 5: Unit Piping Installation

    Section 5: Unit Piping Installation Interior Piping Typical Pressurized Flow Center Installation All interior piping must be sized for proper flow The flow centers are insulated and contain rates and pressure loss. Insulation should be all flushing and circulation connections for used on all inside piping when minimum loop residential and light commercial earth loops temperatures are expected to be less than...
  • Page 18 Section 5: Unit Piping Installation Typical Non-Pressurized Flow Center Installation flushed with a purge cart. The non-pressurized Standing column flow centers are designed to flow center needs to be isolated from the flush operate with no static pressure on the earth cart during flushing because the flow center loop.

  • Page 19: Section 5: Unit Piping Installation

    Section 5: Unit Piping Installation Figure 5: Typical Storage Tank Piping For Radiant Floor Heating Water to Water Storage Heat Pump Tank Out (Load Loop) Shutoff Valves In (Load Loop) Check Valves Installed APSMA PUMP SHARING MODULE Figure 11: APSMA Module Layout Figure 1: Board Layout The pump sharing module, part number APSMA, is designed to allow two units to share...

  • Page 20: Section 6: Antifreeze Overview

    Section 6: Antifreeze Antifreeze Overview Convenience: Is the antifreeze available and In areas where minimum entering loop easy to transport and install? temperatures drop below 40°F, or where piping Codes: Will the brine meet local and state/ will be routed through areas subject to freezing, antifreeze is required.
  • Page 21 Section 6: Antifreeze Figure 6: Antifreeze Specific Gravity 1.0500 1.0400 1.0300 1.0200 1.0100 1.0000 0.9900 0.9800 0.9700 0.9600 Freeze Protection (deg F) Procool Methanol Propylene Glycol Notes: Consult with your representative or distributor if you have any questions regarding antifreeze selection or use.

  • Page 22: Anitfreeze Charging

    Section 6: Antifreeze Antifreeze Charging Calculate the total amount of pipe in the system and use Table 3a to calculate the amount of volume for each specific section of the system. Add the entire volume together, and multiply that volume by the proper antifreeze percentage needed (Table 3b) for the freeze protection required in your area.

  • Page 23: Section 7: Desuperheater Installation

    Section 7: Desuperheater Installation Desuperheater Installation PLUMBING INSTALLATION Units that ship with the desuperheater function must be connected to the water heater/ NOTE: All plumbing and piping connections storage tank with the optionally offered must comply with local plumbing codes. Desuperheater Connection Kit or (as supplied by others) shown on the following sections of this TIP: Measure the distance above the floor or...

  • Page 24: Section 7: Desuperheater Installation

    Section 7: Desuperheater Installation 14. Install an air vent fitting at the highest point 18. Loosen the screw on the end of the of the line from step 13 (assuming it’s the despuerheater pump to purge the air from higher of the two lines from the heat pump the pump’s rotor housing.

  • Page 25: Section 7: Desuperheater Installation

    Section 7: Desuperheater Installation Figure 8: Typical Desuperheater Installation Cold Water Supply Hot Water Air Vent Shutoff Located at Valves System High Point Water Heater (or Storage Tank) Heat Pump Shutoff Desuperheater Out 2” Polyethylene Equipment Pad Drain Valves Desuperheater In Valve Figure 9: Desuperheater Installation in Preheat Tank Cold Water...

  • Page 26: Section 8: Controls

    Section 8: Controls MICROPROCESSOR FEATURES AND OPERATION solenoid valve, or a 24VAC solenoid valve Enertech Global geothermal heat pump with an end switch. Additional field wiring is no controls provide a unique modular approach longer required for operation of the end switch. for controlling heat pump operation.
  • Page 27 Section 8: Controls period. All four fault LEDs will flash (HP + LP All faults are retried twice before finally locking the unit out. The fault retry feature is designed to + FS + CO) and the thermostat “Call For prevent nuisance service calls.
  • Page 28 Section 8: Controls Hot Water Pump Control include power company transformer selection, Controls for high water temperature and low insufficient entrance wire sizing, defective compressor discharge line temperature prevent breaker panel, incorrect transformer tap (unit the hot water (desuperheater) pump from control box), or other power-related issues.
  • Page 29 Section 8: Controls SEQUENCE OF OPERATION: SEQUENCE OF OPERATION: Water-to-Water Units, Dual Two-Stage Water-to-Water Units, Dual Single Stage Compressors (WT092 Only) Compressors (WT120 & WT144 Only) Heating first stage (Y1) Heating first stage (Y1) Compressor A is energized in first stage 10 Compressor A is energized 10 seconds after seconds after the “Y1”...

  • Page 30: Hydronic Air Handler Airflow Settings

    Model Number Jumper Jumper Jumper .40” .60” .80” .40” .60” .80” .40” .60” .80” Norm Norm WT036 with MPH024A Norm Change to: Norm COOL Jumper B HEAT Jumper B ADJUST Jumper Norm Norm 1556 1556 1508 1448 1448 1428 Norm...

  • Page 31: Wiring Diagrams

    Section 8: Controls Water-to-Water Unit, Two-Stage, Single Compressor Wiring Diagram Note: On units lower 2 STAGE AQUASTAT than 8 tons, load side pumping is handled via connection to the loop pump terminals (i.e. the loop and load pumps can be powered from the unit as long as no more than three UP26-116 pumps are connected total (loop...
  • Page 32 Section 8: Controls Water-to-Water Unit, Two-Stage, Dual Two-Stage Compressor Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit Enertech Global WT Models, Rev.: B...
  • Page 33 Section 8: Controls Water-to-Water Unit, Two-Stage, Dual Single Stage Compressor Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit WT Models, Rev.: B Enertech Global...
  • Page 34 Section 8: Controls Water-to-Water Unit, Single, Two Stage Compressor, Three Phase, 460V, 60 HZ Wiring Diagram 2 STAGE AQUASTAT Enertech Global WT Models, Rev.: B...
  • Page 35 Section 8: Controls Water-to-Water Unit, Two-Stage or Single Stage Compressor, Three Phase , 60HZ Wiring Diagram WT Models, Rev.: B Enertech Global...
  • Page 36 Section 8: Controls Water-to-Water Unit, Dual Two Stage Compressors, Three Phase, 60 HZ Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit Enertech Global WT Models, Rev.: B...
  • Page 37 Section 8: Controls Water-to-Water Unit, Dual Single Stage Compressors, Three Phase , 60HZ Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit WT Models, Rev.: B Enertech Global...
  • Page 38 Section 8: Controls Water-to-Water Unit, Dual Two-Stage Compressors, Three Phase , 460V, 60HZ Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit Enertech Global WT Models, Rev.: B...
  • Page 39 Section 8: Controls Water-to-Water Unit, Dual Single Stage Compressors, Three Phase, 460V, 60 HZ Wiring Diagram Note: Units 8 tons and larger are considered “commercial” size units and all pumping is handled from a separate electrical circuit outside of the unit WT Models, Rev.: B Enertech Global...

  • Page 40: Section 9: Equipment Start-Up Procedures Equipment Start-Up Checklist And Form

    EQUIPMENT START-UP FORM Customer Name:_________________________________________________________________ Customer Address:_____________________________________________________________________________________ Model #:__________________________________________ Serial #:____________________________________________ Dealer Name:__________________________________________________________________________________________ Distributor Name:_____________________________________________ Start-up Date:____________________________ Loop Type: Open Closed (Circle One) Flow Rate Cooling Heating Unit Electrical Data Cooling Heating Source Water Pressure In Line Voltage Source Water Pressure Out Total Unit Amps Source Water Pressure Drop Compressor Amps...
  • Page 41 Equipment Start-Up Process Check the following before power is applied to the equipment Caution: Do not start-up the unit until the new structure is ready to be occupied Electrical: Plumbing: Geothermal unit high voltage Pipe and pump sizes are correct wiring is installed correctly Air is purged from all lines Geothermal unit high voltage...

  • Page 42: Section 10: Troubleshooting

    Section 10: Troubleshooting PERFORMANCE CHECK: A 10% variance from Spec Manual is allowed. Heat of Extraction(HE)/Rejection(HR) Always use the same pressure gauge & Record information on the Unit Start-up Form temperature measuring device. Water flow must be in range of Specification Equipment should be in operation for a Manual.
  • Page 43 Section 10: Troubleshooting A: UNIT WILL NOT START IN EITHER CYCLE Set thermostat on heating and highest temperature setting. Unit should run. Set thermostat on cooling and lowest temperature setting. Unit should run. Set fan to On position. Fan should run. If unit does not run in Thermostat any position, disconnect wires at heat pump terminal block and jump R, G, Y. Unit should run in heating. If unit runs, replace thermostat with correct thermostat only.
  • Page 44 Section 10: Troubleshooting H: EXCESSIVE HEAD PRESSURE IN HEATING MODE Load Side Flow See E: Noisy blower and low air flow. I: WATER DRIPPING FROM UNIT Unit not level Level unit. Condensation drain line plugged Unplug condensation line. Too much airflow. Duct work not completely installed. If duct work is not completely installed, finish duct Water sucking off the air coil in work. Check static pressure and compare with air flow chart in spec manual under specific models section. cooling mode If ductwork is completely installed it may be necessary to reduce CFM.
  • Page 45 Section 10: Troubleshooting J: COMPRESSOR WON’T START Check for proper Does Compressor draw Are the suction & Check the wiring, compressor nameplate current when voltage is discharge pressures capacitor & contactor voltage. applied. balanced. operation. (See Note A) Allow to start the compressor while Attempt to restart Check voltage supply...

  • Page 46: Superheat/Subcooling Conditions

    Section 10: Troubleshooting Table 6: Refrigeration Troubleshooting Discharge Suction Compressor System Faults Mode Superheat Subcooling Air TD Water TD Pressure Pressure Amps Heat High Under Charge Cool High Heat High High/Normal Normal High High Normal High Over Charge Cool High High/Normal Normal High Normal...
  • Page 47 Section 10: Troubleshooting Table 4: Typical R-410A Unit Superheat/Subcooling Values Full Load Heating-No Hot Water Generation Source Source Load Load Source Water Load Water Flow Flow Discharge Suction Subcooling Superheat Temp Drop Temp Rise °F GPM/Ton GPM/Ton °F PSIG PSIG °F °F °F...

  • Page 48: Troubleshooting Form

    Section 10: Forms - Troubleshooting Customer/Job Name:____________________________________________ Date:________________________________ Model #:__________________________________________ Serial #:____________________________________________ HE or HR = GPM x TD x Fluid Factor Antifreeze Type:____________________________________ (Use 500 for water; 485 for antifreeze) °F SH = Suction Temp. - Suction Sat. °F °F Liquid line (heating) Load IN...

  • Page 49: Section 11: Engineering Data Unit And Air Handler Electrical Data

    Option AMPS HACR Volts Phase 208/230 104.0 21.2 21.2 26.5 208/230 104.0 21.2 21.7 27.0 208/230 104.0 21.2 25.2 30.5 WT036 208/230 104.0 21.2 25.7 31.0 208/230 83.1 14.0 14.0 17.5 208/230 83.1 14.0 14.5 18.0 30/35 41.0 208/230 152.9 27.1...
  • Page 50 Section 11: Hydronic Air Handler Unit Electrical Data Electric Heater Data Minimum Circuit Ampacity Maximum Overcurrent Protection 60 HZ Power Motor Amps Amps Amps Amps Amps MOCP MOCP MOCP MOCP MOCP Model Single Amps / # of 115V 208V 208V 240V 240V 115V 208V 208V...

  • Page 51: Glossary & Flow Rate Calculations

    Section 11: Specification Glossary, Calculations Glossary COP = Coefficient of Performance = BTU Output / BTU Input HR = Total Heat Of Rejection, Btu/hr DH = Desuperheater Capacity, Btu/hr KW = Total Power Unit Input, Kilowatts EER = Energy Efficiency Ratio = BTU output/Watts input LWT = Leaving Source Water Temperature, Fahrenheit EST = Entering Source Water Temperature, Fahrenheit LLT = Leaving Load Water Temperature, Fahrenheit ELT = Entering Load Water Temperature, Fahrenheit TC = Total Cooling Capacity, Btu/hr GPM = Water Flow, Gallons Per Minute...

  • Page 52: Ahri Performance Data

    Ground Loop and Ground Water Heat Pump TYPE F/L COOL F/L EER F/L HEAT F/L COP P/L COOL P/L EER P/L HEAT P/L COP MODEL 44,300 20.6 44,900 34,600 24.5 33,300 WT036 42,000 16.0 36,400 33,300 20.6 29,200 54,300 19.8...

  • Page 53: Extended Unit Performance Data

    Section 11: Model 036 Performance Data: 3.0 Ton, Part Load Capacity GWT036B LOW STAGE Load GPM set to max Heating Cooling Load Load Source ELT °F ELT °F °F Mbtuh Mbtuh °F Mbtuh Mbtuh Mbtuh °F Mbtuh 24.1 16.7 93.0 2.18 3.24 23.9...
  • Page 54 Section 11: Model 036 Performance Data: 3.0 Ton, Full Load Capacity GWT036B HIGH STAGE Load GPM set to max Heating Cooling Load Load Source ELT °F ELT °F °F Mbtuh Mbtuh °F Mbtuh Mbtuh Mbtuh °F Mbtuh 30.9 21.6 91.9 2.74 3.31 30.4...
  • Page 55 Section 11: Model 048 Performance Data: 4.0 Ton, Part Load Capacity GWT048B LOW STAGE Load GPM set to max Heating Cooling Load Load Source ELT °F ELT °F °F Mbtuh Mbtuh °F Mbtuh Mbtuh Mbtuh °F Mbtuh 30.3 21.2 91.7 2.67 3.33 29.4...
  • Page 56 Section 11: Model 048 Performance Data: 4.0 Ton, Full Load Capacity GWT048B HIGH STAGE Load GPM set to max Heating Cooling Load Load Source ELT °F ELT °F °F Mbtuh Mbtuh °F Mbtuh Mbtuh Mbtuh °F Mbtuh 41.1 29.8 91.9 3.32 3.63 12.0...
  • Page 57 Section 11: Model 060 Performance Data: 5.0 Ton, Part Load Capacity GWT060B LOW STAGE Load GPM set to max Heating Cooling Load Load Source ELT °F ELT °F °F Mbtuh Mbtuh °F Mbtuh Mbtuh Mbtuh °F Mbtuh 36.4 25.4 91.1 3.22 3.31 12.0...
  • Page 58 Section 11: Model 060 Performance Data: 5.0 Ton, Full Load Capacity GWT060B HIGH STAGE Load GPM set to max Heating Cooling Load Source Load ELT °F ELT °F Mbtuh °F Mbtuh Mbtuh °F Mbtuh Mbtuh °F Mbtuh 12.1 49.2 35.8 91.6 3.94 3.66...
  • Page 59 Section 11: Model 092 Cooling Performance Data: 8.0 Ton, Full Load Capacity Source Water Load Water Cooling Flow Flow Discharge Suction Subcooling Superheat °F PSID °F °F PSID °F MBtuh MBtuh Btuh/W PSIG PSIG °F °F 57.7 32.5 89.6 103.3 4.02 22.3 182.3...
  • Page 60 Section 11: Model 092 Heating Performance Data: 8.0 Ton, Full Load Capacity Source Water Load Water Heating Flow Flow Discharge Suction Subcooling Superheat °F PSID °F °F PSID °F MBtuh MBtuh PSIG PSIG °F °F 19.5 92.2 86.3 63.5 6.68 3.79 308.7 65.9...
  • Page 61 Section 11: Model 120 Cooling Performance Data: 10.0 Ton, Full Load Capacity Source Water Load Water Cooling Flow Flow Discharge Suction Subcooling Superheat °F PSID °F °F PSID °F MBtuh MBtuh Btuh/W PSIG PSIG °F °F 54.7 14.1 33.9 91.5 106.7 4.44 20.6...
  • Page 62 Section 11: Model 120 Heating Performance Data: 10.0 Ton, Full Load Capacity Source Water Load Water Heating Flow Flow Discharge Suction Subcooling Superheat °F PSID °F °F PSID °F MBtuh MBtuh PSIG PSIG °F °F 20.3 11.6 91.2 93.4 68.7 7.24 3.78 306.7...
  • Page 63 Section 11: Model 144 Performance Data: 12.0 Ton, Part Load Capacity Heating Cooling 58.8 42.2 5.13 96.7 3.36 10.0 57.1 39.7 5.40 106.4 3.10 55.3 37.4 5.66 121.0 2.86 60.5 44.0 5.18 93.7 3.42 14.0 58.9 41.3 5.46 103.4 3.16 Operation Not Recommended 57.3 38.9...
  • Page 64 Section 11: Model 144 Performance Data: 12.0 Ton, Full Load Capacity Heating Cooling 117.5 84.3 10.26 98.2 3.36 14.6 17.8 114.2 79.4 10.81 107.8 3.10 15.1 110.6 74.8 11.33 122.4 2.86 15.5 121.1 87.9 10.37 94.7 3.42 15.1 24.9 10.1 117.7 82.7 10.92...

  • Page 65: Air Handler & "A" Coil Performance Data

    Section 11: Air Handler and “A” Coil Performance Data Air Handler / “A” Coil Capacities Air Handler / “A” Coil Corrections Hot Water Heating Capacity -- 68°F EAT (DB) Airflow Correction Factors Heating Tot Cooling Sensible Htg Cap Model Model Capacity Capacity Capacity...
  • Page 66 WARRANTY ORDER & CLAIM PHONE : 618.664.9010 FAX : 618.664.4597 EMAIL : WARRANTY@ENERTECHGEO.COM ALL WARRANTY REGISTRATIONS SHOULD BE SUBMITTED WITHIN 10 DAYS OF INSTALLATION COMPANY NAME ____________________________________________________ DATE ___________________ (Form submitter) PHONE _________________ FAX _________________ EMAIL ________________________________________ ORDERED BY _____________________________________ JOB NAME/PO # ____________________________ UNIT Model # _____________________________________ Serial # ____________________________________ FAILURE DATE ____________________ SHIP TO...

  • Page 67: Warranty Registration

    WARRANTY REGISTRATION NOW REGISTER ONLINE AT WARRANTY REGISTRATION.ENERTECHGEO.COM WARRANTY REGISTRATIONS SHOULD BE SUBMITTED WITHIN 60 DAYS OF INSTALLATION Model Number _________________________Serial Number __________________________ Install Date _______________ This unit is performing Satisfactorily Not Satisfactorily (please explain) _______________________________________ ______________________________________________________________________________________________________ Purchaser/User Name _____________________________________________________ Phone ________________________ Address ____________________________________________ City __________________________ State/Prov _________ Postal Code ___________________ Email __________________________________________________________________ Installer Company Name ________________________________________________________________________________...
  • Page 68 Greenville, IL - Mitchell, SD info@enertechgeo.com MEMBER Rev Tab Enertech Global is continually working to improve its products. As a result, the pricing, design and specifications of each product may change without notice and may not be as described herein. For the most up-to-date information, please visit our website, or contact our Customer Service department at info@enertechgeo.com.

This manual is also suitable for:

Wt048Wt060Wt144Wt092Wt120

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