Enertech CT024 Engineering Data And Installation Manual
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Enertech CT024 Engineering Data And Installation Manual

Ct models combination water-to-air multi-positional heat pumps
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Engineering Data and

Installation Manual

CT MODELS COMBINATION WATER-TO-AIR MULTI-POSITIONAL HEAT PUMPS
REVISION: A
*20D082-04NN*
20D082-04NN

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Summary of Contents for Enertech CT024

  • Page 1: Installation Manual

    Engineering Data and Installation Manual CT MODELS COMBINATION WATER-TO-AIR MULTI-POSITIONAL HEAT PUMPS REVISION: A *20D082-04NN* 20D082-04NN...

  • 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 Section 4: Installation Unit Placement ..........................9 Unit Dimensional and Physical Data..................10 - 11 Unit Conversion ..........................12 Ductwork Installation ......................13 - 14 Section 5: Unit Piping Installation...

  • Page 4: Section 1: Model Nomenclature

    Section 1: GeoComfort Model Nomenclature ® Section 1: Air Handler Model Nomenclature Enertech Global CT Models, Rev.: A...
  • Page 5 Section 1: Uncased “A” Coil Model Nomenclature Section 1: Cased “A” Coil Model Nomenclature CT Models, Rev.: A Enertech Global...

  • Page 6: Section 2: Installation Introduction

    If not filed within 15 days the freight company for servicing and filter replacement. can deny all claims. Pre-Installation Steps: Note: Notify Enertech Global’s shipping Compare the electrical data on the unit department of all damages within 15 days. It nameplate with packing slip and ordering...
  • Page 7 It also efficiency and life expectancy. Shown in provides fault indicator(s). refrigerant circuit illustration on page 65. CT Models, Rev.: A Enertech Global...

  • Page 8: Section 3: Installation Considerations

    For these reasons, only qualified standard on all residential units (units may be technicians should install a Enertech Global built ordered without). It uses excess heat, during geothermal system. both heating and cooling cycles, to provide hot water for domestic needs.

  • Page 9: Section 4: Installation Unit Placement

    ⧠ Locate the Unit Start-Up form from this manual and have it available as the unit installation proceeds. ⧠ Clean the air coil with soap and water solution to remove any oil or dirt. CT Models, Rev.: A Enertech Global...

  • Page 10: Unit Dimensional And Physical Data

    For the source water loop, GeoComfort residential models use 1” double o-ring fittings. GeoComfort commercial, Hydron Module & TETCO models use 1” FPT fittings All models use 1” FPT fittings for load water loop connection. All Desuperheater connections are 3/4” FPT. All measurements are in inches. Enertech Global CT Models, Rev.: A...
  • Page 11 35.9 x 24.7 x 1.26 Number Of Rows N/A - Micro-Channel 28 x 30 28 x 30 28 x 30 28 x 34 28 x 34 Filter 1” Thick Unit Weight (nominal) - lbs CT Models, Rev.: A Enertech Global...

  • Page 12: Unit Conversion

    NOTE: Do not pry on the "belly band" that runs across the front of the unit to hide the access panel screws. Slight pressure on the rounded portion of the "belly band" will release the catch. (GeoComfort & Hydron Module units only) Enertech Global CT Models, Rev.: A...

  • Page 13: Ductwork Installation

    Table 1: Maximum Air Velocities Location Supply Return Main Ducts 900 FPM 600 FPM Branch Ducts 700 FPM 600 FPM Grills, Registers, Diffusers 750 FPM 600 FPM CT Models, Rev.: A Enertech Global...
  • Page 14 Return Air damper Damper at least 24" to 36" Flex Connector past any reducer. Flex Connector shown Accessible Filter/Rack Note: A bypass damper is almost always required for zoning systems. Enertech Global CT Models, Rev.: A...

  • Page 15: Section 5: Unit Piping Installation

    Exchanger 3 ton and smaller. Use Maintenance *Hose kit is used for piping single solenoid and (2 required) isolation, and includes flow regulator. fittings for P/T ports. **See product specification catalog for flow rates. CT Models, Rev.: A Enertech Global...

  • Page 16: Section 5: Unit Piping Installation

    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. Enertech Global CT Models, Rev.: A...
  • Page 17 • Pressurized buffer tanks are sized differently than non-pressurized tanks (see guidelines Source Water In listed below). Equipment Pad 2” Polyethylene Foam Note: P/T ports should be angled away from the unit for ease of gauge reading. CT Models, Rev.: A Enertech Global...

  • Page 18: Section 5: Unit Piping Installation

    Check Valve Storage Tank Out (Load Loop) To Flow Center Shutoff Valves PT Port Out (Load Loop) In (Load Loop) PT Port Out (Ground Loop) In (Ground Loop) Strainer Drain In (Load Loop) (Provided) Valve Enertech Global CT Models, Rev.: A...

  • Page 19: Section 5: Unit Piping Installation

    Figure 9d: Right Overflow Sensor Connection Note: Connect the drain through the trap to the condensation drain system in conformance to local plumbing codes. Part Number Description ACDT1A EZ-Trap ¾” Kit ACDT2A EZ-Trap 1” Kit CT Models, Rev.: A Enertech Global...

  • Page 20: Section 6: Antifreeze Overview

    Corrosiveness: The brine must be compatible which causes leaks through most mechanical with the system materials. fittings. This brine is not recommended for use in earth loop applications. Stability: Will the brine require periodic change out or maintenance? Enertech Global CT Models, Rev.: A...

  • Page 21: Antifreeze Charging

    UNDILUTED ANTIFREEZES AND VAPORS. USE ONLY IN A WELL VENTILATED AREA. DO NOT SMOKE WHEN HANDLING FLAMMABLE SOLUTIONS. FAILURE TO OBSERVE SAFETY PRECAUTIONS MAY RESULT IN FIRE, INJURY, OR DEATH. NEVER WORK WITH 100% ALCOHOL SOLUTIONS. CT Models, Rev.: A Enertech Global...
  • Page 22 Tap water may include chemicals that could react with the antifreeze solution. Figure 10: 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 Enertech Global CT Models, Rev.: A...

  • Page 23: Section 7: Desuperheater Installation

    13. Run interconnecting ½” copper pipe from LEVELS, HIGH TEMPERATURE WATER FROM the HOT WATER IN on the heat pump, to the THE DESUPERHEATER COULD RAISE TANK copper tee in the cold water line. TEMPERATURES TO UNSAFE LEVELS. CT Models, Rev.: A Enertech Global...

  • Page 24: Installation

    NOTE: Drawing shown vertically for detail. Fitting installs horizontally into hot water tank. Connection to Hot Water Tank Copper Tee For Domestic Cold Water In Line Drain Brass Tee Adapter to Unit Water Line Enertech Global CT Models, Rev.: A...
  • Page 25 Hot Water Out Water Heater No. 2 Water Heater No. 1 Hot Water In (or Storage Tank) (or Storage Tank) 3/4” Copper Adapter Fitting Shutoff Drain HWG Out Drain Valves Valve Valve HWG In CT Models, Rev.: A Enertech Global...

  • Page 26: Controls

    Section 8: Controls MICROPROCESSOR FEATURES AND OPERATION Test Mode Enertech Global geothermal heat pump The microprocessor control allows the controls provide a unique modular approach technician to shorten most timing delays for for controlling heat pump operation. The faster diagnostics by changing the position of a control system uses one, two, or three printed jumper located on the lockout board.

  • Page 27: Controls

    If power is interrupted to the will be interrupted, and the control will go into board, the fault memory will be cleared. fault retry mode. At startup, the flow switch CT Models, Rev.: A Enertech Global...
  • Page 28 However, removal of the jumper could cause the unit to run under adverse conditions, and therefore should not be removed without contacting technical services. An over/under Enertech Global CT Models, Rev.: A...
  • Page 29 For example, if a high pressure lockout has occurred, the top green light will be on. The orange, red, and yellow lights will be off. 4. Status lights will be off when in test mode. 5. Flashes alternately with the fault LED. CT Models, Rev.: A Enertech Global...
  • Page 30 1. To enter dehumidification mode, ODD input should be 0 VAC; for normal cooling CFM, ODD input should be 24VAC. 2. Heating CFM is not affected by dehumidification mode. When in dehumidification mode, cooling CFM is 85% of normal cooling CFM. Enertech Global CT Models, Rev.: A...
  • Page 31 (i.e. compressor). The thermostat inputs will determine the operating mode. CT Models, Rev.: A Enertech Global...
  • Page 32 ‘G’ call Shared Priority Fan every time there (check every 30 min) is a ‘G’ call Shared Priority Fan every time there (check every 40 min) is a ‘G’ call Factory settings are ON/OFF/OFF/ON Enertech Global CT Models, Rev.: A...
  • Page 33 ON in the case of a unit lock out in the heating mode. 3 If the hot water mode is used for radiant floor or other hydronic heating applications, there would normally not be a HW IN (aqua-stat call) in the cooling mode. CT Models, Rev.: A Enertech Global...
  • Page 34 CFM in all heating stages, but all cooling operation will be 85% of the current stage CFM level, which lowers the CFM through the evaporator coil, improving latent capacity. In ODD mode, a humidistat or a thermostat with a dehumidification Enertech Global CT Models, Rev.: A...

  • Page 35: Unit Operation Modes, Forced Air & Hydronic Operation

    2nd stage heating; “W” is energized if the thermostat calls for 3rd stage heating. If the thermostat is calling for emergency heat, only “W” and “G” are energized. All other inputs are de-energized in emergency heat. CT Models, Rev.: A Enertech Global...
  • Page 36 (always disconnect during solenoid) troubleshooting) In air cooling mode, “O” is energized; “HW-1” and “HW-2” are de-energized; “G” is energized; “Y1” is energized. “Y2” is energized if the thermostat calls for 2nd stage cooling. Enertech Global CT Models, Rev.: A...
  • Page 37 “W” is de-energized. If the control is set to “hot water priority with electric heat,” “W” and ”G” may be energized if there is a simultaneous heating call from the thermostat and the aqua-stat. The refrigerant circuit is not capable of chilled water operation. “O” is never energized during water heating mode. CT Models, Rev.: A Enertech Global...

  • Page 38: Wiring Diagrams

    Section 8: Controls Enertech Global CT Models, Rev.: A...
  • Page 39 Section 8: Controls CT Models, Rev.: A Enertech Global...
  • Page 40 Section 8: Controls Enertech Global CT Models, Rev.: A...

  • Page 41: Section 9: Accessories

    # of Length (ft) NEC 240.4(B) (AWG) (AWG) Wires 240 208 240 208 240 208 3.75 AHTR151CC* Single 11.25 62.5 54.1 78.1 67.6 7.50 7.50 AHTR201CC* Single 83.3 72.1 104.2 90.1 7.50 *Single Point Connection CT Models, Rev.: A Enertech Global...

  • Page 42: Apsma Pump Sharing Module

    Please see the Field-Installed Electric Heat IOM, part number 20D156-01NN for detailed instructions on the installation and wiring of auxiliary electric heaters. Bridge 24VAC input 240VAC input Diode from unit #1 24VAC input Diode 240VAC to pump(s) from unit #2 Enertech Global CT Models, Rev.: A...

  • Page 43: Section 10: Equipment Start Up Procedures

    Section 10: Eqipment Start up Procedures 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...
  • Page 44 Section 10: Eqipment Start up Procedures 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...

  • Page 45: Section 11: Troubleshooting

    Manual. Then read the GPM column in Spec Manual to determine flow in GPM. 2. Check leaving water temperature of unit. FORMULA: GPM x water temp diff, x 485 (antifreeze) or 500 (fresh water) = HE or HR in BTU/HR CT Models, Rev.: A Enertech Global...
  • Page 46 Thermostat is getting a draft of cold or warm air. Make sure that the wall or hole used to run thermostat Thermostat wire from the ceiling or basement is sealed, so no draft can come to the thermostat. Faulty Thermostat (Replace). Enertech Global CT Models, Rev.: A...

  • Page 47: Section 11: Troubleshooting

    If ductwork is completely installed it may be necessary to reduce CFM. Water sucking out of the Install an EZ-Trap or P-Trap on the drain outlet so blower cannot suck air back through the drain outlet. drain pan CT Models, Rev.: A Enertech Global...

  • Page 48: Section 11: Troubleshooting

    '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 CT Models, Rev.: A...
  • Page 49 Restricted TXV Cool High High High Heat High/Normal High TXV Stuck Open Cool High/Normal High Heat High High/Normal Low/Normal Inadequate Compression Cool High High/Normal Low/Normal Oil Separator: Location in Refrigerant Circuit (CT 024 example) eparatOr CT Models, Rev.: A Enertech Global...

  • Page 50: Normal Operation

    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 Enertech Global CT Models, Rev.: A...
  • Page 51 Section 11: 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) SH = Suction Temp. - Suction Sat. °F °F Heating Supply Air Return Air...
  • Page 52 Page Left Intentionally Blank...

  • Page 53: Unit Electrical Data

    Option AMPS HACR Volts Phase 208/230 58.3 11.7 15.6 18.5 208/230 58.3 11.7 16.1 19.0 208/230 58.3 11.7 19.6 22.5 CT024 208/230 58.3 11.7 20.1 23.0 208/230 55.4 10.4 12.0 208/230 55.4 10.9 12.5 30/35 28.0 208/230 83.0 15.3 19.2 23.0...
  • Page 54 BETWEEN THE NEUTRAL AND ONE HOT LEG OF THE CIRCUIT. SOURCE WIRING MUST BE WYE (STAR) CONFIGURATION. 3-PHASE DELTA CONNECTIONS WILL NOT PROVIDE THE CORRECT WIRING AND WILL CAUSE THE UNIT NOT TO OPERATE. Enertech Global CT Models, Rev.: A...

  • Page 55: Water Flow And Heating/Cooling Calculations And Correction Factors

    GPM = Water Flow, Gallons Per Minute TC = Total Cooling Capacity, Btu/hr HC = Total Heating Capacity, Btu/hr WPD = Water Pressure Drop, PSI & Feet of Water HE = Total Heat Of Extraction, Btu/hr CT Models, Rev.: A Enertech Global...
  • Page 56 2. Desuperheater capacity is based upon 0.4 GPM Flow per nominal ton at 90°F entering hot water temperature. 3. Interpolation between above categories is permissible; ex- trapolation is not. 4. See Flow Rate Selection above for proper application. Enertech Global CT Models, Rev.: A...

  • Page 57: Ahri, Full Load And Hydronic Heat Extended Data Tables

    Section 12: AHRI Performance Data Ground Loop Heat Pump HEATING COOLING Model CAPACITY Btu/hr Btu/hr Full Load 19,700 26,500 20.0 CT024 Part Load 15,700 20,900 27.3 Full Load 28,600 38,600 18.3 CT036 Part Load 22,400 29,100 26.8 Full Load 38,000 49,000 17.1...
  • Page 58 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 59 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 60 LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 61 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 62 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 63 LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 64 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 65 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 66 LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 67 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 68 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 69 LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 70 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 71 LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F CT Models, Rev.: A Enertech Global...
  • Page 72 LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F Enertech Global CT Models, Rev.: A...
  • Page 73 0.9404 0.9431 0.9547 0.855 0.998 1.140 0.9701 0.9715 0.9774 0.797 0.952 1.106 1.261 1.0000 1.0000 1.0000 0.624 0.812 1.000 1.188 1.343 1.0446 1.0425 1.0335 0.697 0.820 0.944 1.067 1.1179 1.1124 1.0878 0.637 0.817 0.983 CT Models, Rev.: A Enertech Global...

  • Page 74: Section 13: Warranty And Revision Table Warranty Registrationm And Claim Forms

    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...
  • Page 75 How would you rate your overall satisfaction with your installing geothermal contractor? 1 (Very Dissatis ed) 10 (Very Satis ed) 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 76: Revision Tables

    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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