Models GH & EH
Contents
1. All values are typical refer to antifreeze manufacturer data sheets for actual values 12 GEO16 504 2 START UP PROCEDURE Unit Startup Procedure The Startup Troubleshooting form found on page 23 of this manual may be used to assist during unit startup 1 Put aquastat in standby or off mode 2 Turn on line power to heat pump 3 Slowly raise the aquastat set point until a heating call is generated and the compressor energizes 4 After a few minutes check the load out temperature and verify warm water delivery 5 Verify water flow by comparing pressure drop across the coaxial coil to values in Table 13 1 6 Monitor ground water supply GWI and return GWO temperatures If temperature drop is within expected operating range as shown in Table 14 1 continue with testing 7 If temperature drop is outside of expected operating range check refrigerant pressures and compare to values in Table 14 1 8 Check for vibration noise and leaks 9 Lower aquastat set point below tank temperature and verify that compressor and flow center deactivate 10 Initiate a control signal to place the unit in the cooling mode Cooling set point must be set below room temperature 11 Cooling will energize after a time delay 12 Be sure that the compressor and flow center are activated 13 Monitor ground water supply GWI and return GWO temperatures If temperature rise is within expected operating range in Table 12. L Control M 11 57 11 57 11 57 11 57 Approx Shipping Weight Ibs CoiliConnection Size 1 NPT 1 NPT 1 NPT 1 NPT Female Swivel GEO16 504 2 UNIT DIMENSIONS Figure 5 1 Dimensional Drawings Models 096 132 CONTROL WIRING B er FS HYD LOAD IN lt UNIT POWER lt at DK SOURCE RN IN w p E mee m PUMP POWER M y DHW IN N NIS q DHW OUT ro Or HYD LOAD OUT N R gt GEO ru NI L SOURCE e N OUT Q1 d A EN UsT T ii bet st M UIII t Hn prey 8 FRONT VIEW RIGHT SIDE VIEW Table 5 1 Dimensions inches Models 096 132 Overall Cabinet Electrical Bottom Unit Geo Hyd amp DHW Control Electrical Top Unit Geo Hyd amp DHW ajom Jizoj jvuo siri ciroimmjou Control Approx Shipping Weight Ibs 655 884 885 Coil Connection Size Female Swivel 1 NPT 1 NPT 1 NPT GEO16 504 2 UNIT LOCATION INSTALLATION Table 6 1 SI Metric Conversion Factors Multiply By To Obtain Multiply By To Obtain 0 24 kPa CFH 1 699 m min 6 893 kPa Btu ft 0 0374 mJ m F 32 x 0 555 C pound 0 453 kg inches 25 4 mm Btu hr 0 000293 kW hr feet 0 305
3. Pede br ed idm 17 serial number and company address Any substitution of Serial Plate Example EAD aiia Miele ane a nad 17 parts or controls not approved by the factory will be at the Troubleshoollng cuin ereeres pietre xr Ree wet Ren 19 owner s risk Start Up Troubleshooting Form 23 Warianty PERPE Back Page GEO16 504 2 MODEL NOMENCLATURE Figure 3 1 Model Number Designations 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 MT UC MBH DS cc SV CT AC GM HM HWG MT SA RA 1 2 Model Type MT 11 Controls Type CT GH Residential Hydronic Water to Water 4 Modine Controls System EH Commercial Hydronic Water to Water 12 Air Coil AC 3 Unit Configuration UC N None R Reversible W Non Reversible 13 Geo Source Coaxial Coil Material GM C Copper 4 5 6 Nominal Cooling Capacity MBH N Cupronickel 036 36 000 Btu hr 048 48 000 Btu hr 14 Hydronic Load Coaxial Coil Material HM 060 60 000 Btu hr C Copper 066 66 000 Btu hr N Cupronickel 096 96 000 Btuh hr 120 120 000 Btuh hr 15 Hot Water Generator or Desuperheater HWG 132 132 000 Btuh hr 0 None 1 HWG with Factory Installed Pump 7 Development Sequence Designation DS C Current 16 Motor Type MT N None 8 Compressor Configuration CC 1 Single Stage 17 Supply Air Configuration SA 3 Single Stage with Soft Start N None
4. Low High Load Water Temp Heating High High Normal High Low Normal Low High Load Water Temp Cooling High High High Low High Restricted TXV High Low Normal High High Low TXV Bulb Failure Loss of Charge High Low High High Low Restricted Filter Drier High Low Normal High High Low Inefficient Compressor Low Low High High Low Scaled Fouled Load Heat Exchanger Heating High High High Low Low Scaled Fouled Load Heat Exchanger Cooling Low Normal Scaled Fouled Source Heat Exchanger Heating Low Normal Scaled Fouled Source Heat Exchanger Cooling High Restricted filter drier will have symptoms similar to restricted TXV Check temperature drop across filter driver to verify a restriction PHYSICAL DATA Table 15 2 Physical Data Reversible H Non Reversible W Factory Charge R 410A 67 oz per Unit Factory Charge R 410A oz per Unit w HWG Ww 10 0 67 101 100 112 rT om we os os e me oe os Stacked Unit Copeland Scroll Unit Style Compressor Single Unit GEO16 504 2 15 MAINTENANCE MAINTENANCE A WARNING When servicing or repairing this equipment use only factory approved service replacement parts A complete replacement parts list may be obtained by contacting Modine Manufacturing Company Refer to the rating plate on the appliance for complete appliance model number serial num
5. Air Coil 5H0834010006 Source Coil 5H0834080016 Control Board 5H0B835950001 Control Display 5H0835950002 DHW Pump 5H0834230001 Wiring Diagram SHO834743001 or ly 17 CONFORMS TO UL STD 1995 CERTIFIED TO CAN CSA STD C22 2 NO 236 tnos oron 01 GEO16 504 2 17 REPLACEMENT PARTS Table 18 1 Common Replacement Parts Part Description Compressor Code Compressor 5H1028043611 5H1028045111 5H1028045711 5H1028047211 5H1028045111 5H1028045711 5H1028047211 01 03 m 5H1036890003 591036890007 5H1036890008 5H1036890010 5H1036890007 5H1036890008 5H1036890010 Soft Start 5H0834140002 Hot Water Generator 1 Desuperheater DHW 5H0834230001 Pump Power Code Control Transformer 5H0749490001 Contactor 5H0834310001 Compressor Code 01 03 Compressor 5H1028043612 5H1028045112 5H1028045712 5H1028047212 5H1028045112 5H1028045712 5H1028047212 Control Transformer 5H0749490001 Contactor 5H0834310003 Expansion Valve 5 0834040004 5H0834040005 5H0834040006 5H0834040006 5H0834040005 5H0834040006 5H0834040006 Filter Drier 5H0834050002 5H0834050002 5H0834050003 5H0834050003 5H0834050002 5H0834050003 5H0834050003 Reversing Valve 5H1028300001 5H1028300001 5H1028300005 5H1028300005 5H1028300001 591028300005 5H1028300005 All Models Water Line Fitting G
6. COMPRESSOR DISCHARGE PSIG SAT F FILTER DRIER EXPANSION VALVE F E GR F SUPERHEAT UNIT TOTAL AMP DRAW GPM LIQUID LINE FD EXIT FLASH GAS SUBCOOLING COMPRESSOR AMP DRAW i m LINE VOLTAGE HEAT OF EXTRACTION SOURCE FLOW GPM X AT FX 500 FOR WATER 485 ANTIFREEZE BTU HR Note In order to maintain optimal performance DO NOT hook up pressure gauges during start up procedures When troubleshooting conduct water side analysis first If water side performance is poor use of pressure gauge and refrigerant side analysis may be required Technician Notes GEO16 504 2 23 COMMERCIAL WARRANTY For Residential Warranty see GEO16 510 Seller warrants its products to be free from defects in material and workmanship EXCLUSIVE HOWEVER of failures attributable to the use of materials substituted under emergency conditions for materials normally employed This warranty covers replacement of any parts furnished from the factory of Seller but does not cover labor of any kind and materials not furnished by Seller or any charges for any such labor or materials whether such labor materials or charges thereon are due to replacement of parts adjustments repairs or any other work done This warranty does not apply to any equipment which shall have been repaired or altered outside the factory of Seller in any way so as in the judgment of Seller to affect its stabilit
7. Evacuate and recharge to factory recommended charge Restricted TXV Verify superheat and subcooling values Replace if necessary Non condensables in system Verify superheat and subcooling values GEO16 504 2 Evacuate and recharge to factory recommended charge 21 TROUBLESHOOTING Table 22 1 Troubleshooting Unit will not operate in cooling mode Insufficient cooling or heating Noisy unit 22 Possible Cause Loss of control signal In cooling mode verify 24VAC at RV coil and at REV terminals Action If 24VAC exists troubleshoot RV and coil If no control signal troubleshoot aquastat signals Defective reversing valve Verify operation of reversing valve and solenoid coil Replace if defective When it is necessary to replace the reversing valve wrap it with a wet cloth and direct the heat away Excessive heat can damage the valve Aquastat setup wiring Verify aquastat setup and wiring Repair wiring if needed Aquastat operation Verify proper aquastat signals to unit Replace if necessary No water flow high pressure cutout Unit undersized Check flow with flow meter Verify load calculations and unit selection Check pump operation If excessive it may possible to rectify with shading and insulation Defective reversing valve Verify operation of reversing valve and solenoid coil Defective reversing valve
8. 3 8 closed cell insulation 11 Refer to Start Up Procedure for DHW setup and start up GEO16 504 2 INSTALLATION Wiring A WARNING Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage All appliances must be wired strictly in accordance with the wiring diagram furnished with the appliance Any wiring different from the wiring diagram could result in a hazard to persons and property Any original factory wiring that requires replacement must be replaced with wiring material having a temperature rating of at least 105 C Ensure that the supply voltage to the appliance as indicated on the serial plate is not 5 greater than rated voltage A CAUTION Ensure that the supply voltage to the appliance as indicated on the serial plate is not 5 less than the rated voltage Installation of wiring must conform with local building codes or in the absence of local codes with the National Electric Code ANSI NFPA 70 Latest Edition Unit must be electrically grounded in conformance to this code In Canada wiring must comply with CSA C22 1 Part 1 Electrical Code Electric wiring must be sized to carry the full load amp draw of the motor starter and any controls that are used with the unit See Table 11 1 for electrical data Any damage to or failure of units caused by incorrect wiring of the units is not covered by warranty Terminal Strip Connections The te
9. meters gallons 3 785 liters CFM 0 028 m min psig 27 7 W C UNIT LOCATION DANGER Appliances must not be installed where they may be exposed to potentially explosive or flammable atmosphere Handling Each unit will be shipped to the site on a wood skid Whenever possible all lifting and handling of the unit should be done with the packing and skid in position When slinging or using a forklift to lift the unit the support points should be sufficiently apart to give stability when lifting Unless otherwise noted the lifting points should be equidistant from the centerline Extreme care should be taken not to drop the unit Considerable damage can occur to the unit during positioning in particular to the paneling and exterior paint Use an adequate number of personnel and the correct tools when moving the unit The unit is designed to remain upright so care should be taken when lifting the unit up steps The use of torque screwdrivers on panel cover or component mounting screws is not recommended Hand start all screws If electric drills are used set at the lowest possible torque Storage Equipment should be stored in clean dry area and in its original packaging Do not store or install units in corrosive environments or in locations subject to temperature or humidity extremes Performance reliability and service life can be significantly reduced Transport and store units in an upri
10. temperature and pressure GEO16 504 2 7 INSTALLATION Hot Water Generator Desuperheater Installation If Equipped DANGER Water temperatures over 125 can cause severe burns instantly resulting in severe injury or death Feel water before showering or bathing Ensure that the primary water heating Source setpoints are higher than the heat pump water discharge temperature of 120 F IMPORTANT All piping and connections must be made in accordance with local plumbing codes A minimum 50 gallon water heater is recommended with the Desuperheater DHW option Higher demand applications may use either one 80 gallon water heater or two 50 gallon water heaters piped in series The hot water tank should be allowed to stratify by lowering the bottom element setpoint to 100 F and setting the top element setpoint to 125 F Operation of the DHW is controlled by a sensor located on the domestic water in line which must not be removed Hot water will only be produced when the unit is running a conditioning cycle The desuperheater pump is disabled on delivery from the factory It must be enabled by wiring the pump in the unit control panel after the DHW piping has been completed and purged This is to prevent the domestic hot water pump from running before the DHW tank is piped to the heat pump DHW option must not be enabled until all piping is complete and the DHW loop has been purged and bled or damage can occur Poor domes
11. that low pressure cut out occurs in heating mode and not in cooling mode Replace filter if necessary Restricted TXV Verify superheat and subcooling values Replace if necessary Defective low pressure switch Reduced water flow Monitor suction pressure while operating verify low pressure cut out pressure 25 5 psig Check flow center operation Replace if defective Troubleshoot flow center Manually open water valve and measure water flow Adjust to proper flow rate Plugged water strainer or filter Clean or replace Water supply too hot Scaled or plugged coaxial coil Verify GEO IN with temperature probe Check temperature drop across coaxial coil Verify loop sizing bring water temperature within design parameters Clean if necessary Reduced water low Verify hydronic pump operation Troubleshoot pump operation Manually open water valve and measure water flow Adjust to proper flow rate Plugged water strainer or filter Replace or clean if dirty Water temperature out of range Measure return water temperature should be below 90 F Bring return water temperature within design parameters Defective high pressure switch Monitor discharge pressure while operating verify high pressure cut out pressure 600 25 psig Replace if defective Overcharged with refrigerant Verify superheat and subcooling values
12. 100 110 315 345 9 13 7 9 104 114 320 350 134 144 355 395 138 148 360 390 50 Cooling No Desuperheater Suction Discharge Pressure Pressure Ec E Eco Temperature Rise psig psig F 1 5 122 130 220 235 13 19 10 16 19 23 3 120 128 190 210 13 19 10 16 7 12 1 5 127 136 280 210 11 15 8 14 19 23 3 125 134 250 270 11 15 8 14 7 12 1 5 132 144 360 380 10 14 8 14 18 22 3 130 142 330 350 10 14 8 14 7 12 Entering Water Temperature CF Water Flow Source Water gpm ton 50 70 Table 14 2 Operating Limits Operating Limits Cooling F Heating F NOTE Limits are acceptable for start up conditions only Min max limits are intended for bringing the space up down Min Entering Water to normal temperatures Units are not designed to operate at t Normal Entering Water the min max conditions on a continual or regular basis The operating limits are dependent upon three primary factors o Max Entering Water 1 entering source temperature 2 entering load temperature Min Entering Water and 3 flow rate gpm When any of the factors are at the Q minimum or maximum levels the other two factors must be at Normal Entering Water the normal level for proper and reliable unit operation Max Entering Water Table 14 3 Compressor Winding Resistance ZP16K5E PFV ZP21K5E PFV ZP25K5E PFV ZP29K5E PFV ZP34K5E PFV ZP36K5E PFV Z
13. 4 1 continue with testing 14 If temperature drop is outside of expected operating range check refrigerant pressures and compare to Table 14 1 15 Check for vibration noise and leaks 16 Adjust the cooling set point above the tank temperature and verify that the compressor and flow center deactivate 17 If unit fails to operate as described see troubleshooting section If the unit still does not operate properly contact Modine at the number listed on the back of this manual 18 When testing is complete set system to normal operating mode DHW Startup Procedure 1 If the DHW was wired the DHW pump will run whenever the heat pump is running and the DHW Supply temperature is below 120 F and the discharge temperature is above 100 F 2 To verify operation of the DHW pump ensure that the heat pump is running and the DHW temperature is below 120 F and the discharge temperature is above 100 F 3 The temperature rise across the desuperheater should be 5 10 F Sequence of Operation The unit s controller will monitor calls for heat or cooling by aquastat Cool When the temperature increases above the cooling aquastat s set point and the dead band the compressor and reversing valve will be energized The compressor will be limited by a timer that will provide anti cycle protection Heat When the temperature falls below the heating aquastat s set point and the dead band the compressor will be energized and the r
14. 5 Modine Manufacturing Company 1500 DeKoven Avenue Racine WI 53403 Phone 1 877 679 4436 4GEO www modinehvac com
15. 9 10 Supply Voltage SV 18 Return Air Configuration RA 02 208 60 1 N None 03 208 230 60 1 04 208 60 3 05 208 230 60 3 Figure 3 2 Serial Number Designations WARRANTY TERM 1 1 Years Parts Commercial 2 10 Years Parts 5 Years Labor Residential YEAR OF SPO 8 10 Years Parts 10 Years Labor Extended Residential MANUFACTURE NUMBER Serial Number S 0 40 20 1 2 11 14 1234 12345 SPO MODEL COMPRESSOR 1 Copeland STACKED UNIT 0 Standard 1 Stacked BLOWER SUPPLIER 20 Morrison 00 None MOTOR SUPPLIER 40 AO Smith 51 Genteq 00 None SEQUENTIAL NUMBER Number varies from 0000 to 9999 Each unit within the same week of manufacture is to have unique number WEEK OF MANUFACTURE GEO16 504 2 UNIT DIMENSIONS Figure 4 1 Dimensional Drawings Models 036 066 HYD LOAD IN UNIT POWER PUMP POWER AS An B m CONTROL WIRING ENTRY i uu rur GEO SOURCE IN m Y j NN DHW OUT BA i 6 D rt b i L E K F QT M G lets v rts Y E 1 ej H E C HYD LOAD OUT IN FRONT VIEW GEO SOURCE OUT RIGHT SIDE VIEW Table 4 1 Dimensions inches Models 036 066 Overall Cabinet Electrical Geo Hyd amp DHW
16. Compressors Condensing Units for Cassettes FIVE YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER WITHIN FIVE YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER WITHIN FIVE YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION OR WITHIN SIXTY SIX MONTHS FROM DATE OF SHIPMENT FROM SELLER WHICHEVER OCCURS FIRST Burners Low Intensity Infrared Units TWO YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER WITHIN Other TWO YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION OR WITHIN Components excluding Heat Exchangers Coils Condensers Burners Sheet Metal THIRTY MONTHS FROM DATE OF SHIPMENT FROM SELLER WHICHEVER OCCURS FIRST Heat Exchangers Coils Indoor and Outdoor Duct Furnaces and System Units Steam Hot Water Units Oil Fired Units Electric Units Cassettes Vertical Unit Ventilators Geothermal Units Compressors Vertical Unit Ventilators Geothermal Units Burners High Intensity Infrared Units Sheet Metal Parts All Products ONE YEAR FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER WITHIN ONE YEAR FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION OR WITHIN EIGHTEEN MONTHS FROM DATE OF SHIPMENT FROM SELLER WHICHEVER OCCURS FIRST As Modine Manufacturing Company has a continuous product improvement program it reserves the right to change design and specifications without notice PT MODINE Modine Manufacturing Company 201
17. GEO16 504 2 DINE 5H0835730000 August 2015 INSTALLATION AND SERVICE MANUAL bow al 9 E 9 22 al ME A WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death and could cause exposure to substances which have been determined by various state agencies to cause cancer birth defects or other reproductive harm Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment hydronic ground source heat pumps models GH and EH lb LISTED NOTE Energy Star only Intertek ENERGY STAR A WARNING This unit contains R 410A high pressure refrigerant Hazards exist that could result in personal injury or death Installation maintenance and service must only be performed by an HVAC technician qualified in R 410A refrigerant and using proper tools and equipment Due to much higher pressure of R 410A refrigerant DO NOT USE service equipment or tools designed for refrigerants other than R 410A IMPORTANT The use of this manual is specifically intended for a qualified installation and service agency A qualified installation and service agency must perform all installation and service of these appliances GH EH units contain the refrigerant R 410A Review the R 410A Material Safety Data Sheet MSDS for hazards and first aid measures Refrigerant cha
18. OUBLESHOOTING Table 20 1 Troubleshooting No power to unit Clg Possible Cause Power Failure No voltage at line side of compressor contactor Action Check disconnect switch and power distribution panel Open disconnect Switch At heat pump disconnect voltmeter shows voltage on the line side but not on the load side Determine why the disconnect switch was opened Close disconnect if safe to do so Blown fuse circuit breaker tripped Check fuses and circuit breaker Reset circuit breaker or replace fuses with proper size and type Verify total load on system and proper fuse circuit breaker sizing Low supply voltage Voltmeter shows abnormally low voltage at heat pump disconnect switch below 95 of serial plate voltage Call power company Compressor not operating Unit short cycles 20 Aquastat wiring Verify wiring at unit and signals at unit Repair wiring if needed Transformer Check primary and secondary transformer voltages If no primary verify wiring If no or low secondary check transformer wiring If wiring ok replace transformer Check transformer secondary voltage circuit breaker Reset breaker if tripped Power wiring defect Check for loose or broken wires at compressor contactor and capacitor Repair wiring if needed Locked out on safety controls Check for fault Address lockout and cycle power to unit to rese
19. P39K5E PFV ZP51K5E PFV ZP57K5E PFV ZP72KCE PFV 14 GEO16 504 2 START UP PROCEDURE PHYSICAL DATA Table 15 1 Refrigerant Circuit Malfunctions and Probable Causes The following chart will assist in troubleshooting and diagnosing causes of a problematic unit The chart provides general guidance for system measurements relative to typical operating conditions Undercharged System Symptom Head Press Low Comp Amp Draw Low Superheat High Subcool Low Load Temp Diff Water Source Temp Diff Low Overcharged System High High Normal High Normal Low Load Water Flow Heating High High High Low Low Low Load Water Flow Cooling Low Low Low Normal High Low Low Source Water Flow Heating Low Low Low High High Low Source Water Flow Cooling High High High Low High High Load Water Flow Heating Low Low Low High Normal High High Load Water Flow Cooling Normal High Normal High High Low Normal High High Source Water Flow Heating Normal High Normal High High Low Normal Low High Source Water Flow Cooling Low Low Low High Low Low Load Water Temp Heating Low Low Low Normal High Normal High Low Load Water Temp Cooling Low Low Low Normal High
20. PORTANT Indicates a situation which if not avoided MAY result in a potential safety concern A DANGER 1 Appliances must not be installed where they may be exposed to potentially explosive or flammable atmosphere 2 Water temperatures over 125 F can cause severe burns instantly resulting in severe injury or death Feel water before showering or bathing Ensure that the primary water heating Source setpoints are higher than the heat pump water discharge temperature of 120 F A WARNING Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage All appliances must be wired strictly in accordance with the wiring diagram furnished with the appliance Any wiring different from the wiring diagram could result in a hazard to persons and property Any original factory wiring that requires replacement must be replaced with wiring material having a temperature A CAUTION Ensure that the supply voltage to the appliance as indicated on the serial plate is not 5 less than the rated voltage Do not overcharge the refrigeration system This can lead to elevated compressor discharge pressure and possibly flooding the compressor with liquid Do not attempt to reuse any mechanical or electrical component which has been wet Such component must be replaced IMPORTANT Start up and adjustment procedures must be performed by a qualified service agency All refrigeration
21. TIAL OR INCIDENTAL DAMAGES OF ANY KIND RESULTING FROM THE ORDER OR USE OF ITS PRODUCT WHETHER ARISING FROM BREACH OF WARRANTY NONCONFORMITY TO ORDERED SPECIFICATIONS DELAY IN DELIVERY OR ANY LOSS SUSTAINED BY THE BUYER Component Applicable Models Heat Exchangers Gas Fired Units BUYER S REMEDY FOR BREACH OF WARRANTY EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW IS LIMITED TO REPAIR OR REPLACEMENT AT THE FACTORY OF SELLER ANY COMPONENT WHICH SHALL WITHIN THE APPLICABLE WARRANTY PERIOD DEFINED HEREIN AND UPON PRIOR WRITTEN APPROVAL BE RETURNED TO SELLER WITH TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY BUYER AS A COMPONENT PART OF EQUIPMENT MANUFACTURED BY BUYER BUYER S REMEDY FOR BREACH AS LIMITED HEREIN SHALL BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER FOR GAS FIRED PRODUCTS INSTALLED IN HIGH HUMIDITY APPLICATIONS AND UTILIZING STAINLESS STEEL HEAT EXCHANGERS BUYER S REMEDY FOR BREACH AS LIMITED HEREIN SHALL BE LIMITED TO TEN YEARS FROM DATE OF SHIPMENT FROM SELLER These warranties are issued only to the original owner user and cannot be transferred or assigned No provision is made in these warranties for any labor allowance or field labor participation Seller will not honor any expenses incurred in its behalf with regard to repairs to any of Seller s products No credit shall be issued for any defect
22. asket Spacer Set 3H0387930000 High Pressure Switch 5H0834070001 Low Pressure Switch 5H0834070002 18 GEO16 504 2 TROUBLESHOOTING General When encountering a unit with operational faults complete these preliminary system checks before utilizing the troubleshooting charts In order to maintain system integrity performance and efficiency do not install service gauges unless unit operation appears abnormal and all other diagnostic checks are normal Verify water source and load side temperatures changes against typical operating data If the performance is within the ranges in the table and the water flows have been verified then gauges may be installed in order to check subcooling and superheat 1 Verify that the unit and flow center power supplies are on 2 Verify that all fuses or disconnects switches are intact 3 Inspect unit for obvious defects e g leaking connections loose or damaged wiring etc 4 Verify field inputs and outputs refer to wiring diagram a Aquastat inputs Aquastat inputs are 24VAC signals and can be verified using a volt meter b Outputs Compressor and reversing valve output relays are 24VAC and can be verified using a voltmeter The flow center and DHW pump are powered through 240V relays Operation can be verified using a voltmeter or clamp on ammeter 5 After completing these checks refer to the troubleshooting tables on the next pages GEO16 504 2 19 TR
23. ates the likelihood of scaling reduces However flow rates over 3 gpm per ton can produce water or debris velocities that can erode the heat exchanger wall and ultimately produce leaks Desuperheater Coils If potable water is hard or not chemically softened the high temperature of the desuperheater can lead to scaling This results in more scheduled maintenance A buffer tank may be installed to help prevent scaling Extreme hard water conditions should not use the desuperheater option Should periodic coil cleaning be necessary use coil cleaning procedures that are compatible with the heat exchanger material and copper water lines Compressor Conduct annual amperage checks to insure that amp draw is no more than 1096 greater than indicated on the operating data 16 GEO16 504 2 MAINTENANCE Cabinet If a flood occurs try to expel water as soon as possible Water contact for any duration will cause corrosion on the cabinet finish All units mounted on the ground should be installed on an absorption pad This also helps prevent water from entering the cabinet If the cabinet is dirty do not spray with water use a damp rag with mild detergent and wipe the system clean Refrigerant System The refrigerant circuit is sealed service gauges should not be used unless the system is not operating correctly The operational charts show correct pressures flow and temperature Before servicing the refrigerant circuit ensure that the
24. ber and company address Any substitution of parts or controls not approved by the factory will be at the owner s risk A CAUTION Do not attempt to reuse any mechanical or electrical component which has been wet Such component must be replaced IMPORTANT To check most of the possible remedies in the troubleshooting guide listed in Tables 20 1 22 1 refer to the applicable sections of the manual The routine care and maintenance of this unit will increase longevity provide for the proper operational performance and reduce the probability of failure Once the unit is operational it will be necessary to perform certain routine maintenance service checks Following is a maintenance schedule with the recommended checks If your unit is equipped with special features there may be additional checks that are required Consult Modine for assistance The use of torque screwdrivers on panel cover or component mounting screws is not recommended Hand start all screws If electric drills are used set at the lowest possible torque Coaxial Coil Maintenance Ground Water Applications If the system is installed in an area with a known high mineral content 125 P P M or greater best practice is to establish a periodic maintenance schedule with the owner so the coil can be checked on a regular basis Should periodic coil cleaning be necessary use coil cleaning procedures that are compatible with the heat exchanger material and
25. checks must be made by a qualified R 410A refrigeration technician Do not release refrigerant to the atmosphere When adding or removing refrigerant all national state province and local laws must be followed The ground heat exchanger open or closed loop or water source to be connected to the unit must be designed constructed and prepared in accordance with industry guidelines IGSHPA ASHRAE NGWA etc and best practices and any more restrictive local codes and regulations by a qualified service agency Failure to properly size install or prepare the source could result in reduced performance a reduction in the normal life of the units and a hazard to persons and property Units selected for open loop ground source applications should have a cupronickel source coaxial heat exchanger to reduce mineral buildup and scaling Open loop systems should have the source coaxial coil flushed periodically to maintain peak performance All piping and connections must be made in accordance with local plumbing codes To check most of the Possible Remedies in the troubleshooting guide listed in Tables 20 1 22 1 refer to the applicable sections of the manual Table of Contents rating of at least 105 C General Information 1 Ensure that the supply voltage to the appliance as Inspection on Arrival jg ae P Re e dur aged ee d adis dod d 1 indicated on the serial plate is not 596 greater t
26. copper water lines Generally with greater water flow rates the likelihood of scaling reduces Therefore the recommended minimum water flow is 1 5 gpm per ton Recommended minimum flow rate for entering water temperatures below 50 F is 2 0 gpm per ton 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 infiltrate the water line Lines should always be airtight Keep the system under pressure at all times It is recommended in open loop systems that the water control valve be placed in the discharge line to prevent loss of pressure during off cycles Closed loop systems must have positive static pressure Coaxial Coil Maintenance Ground Loop Applications Generally coaxial coil maintenance is not needed for closed loop systems However if the piping is known to have high dirt or debris content best practice is to establish a periodic maintenance schedule with the owner so the coil can be checked on a regular basis Dirty installations are typically the result of deterioration of iron or galvanized piping or components in the system Open cooling towers requiring heavy chemical treatment and mineral buildup through water use can also contribute to higher maintenance Should periodic coil cleaning be necessary use standard coil cleaning procedures that are compatible with the heat exchanger material and copper water lines Generally with greater water flow r
27. creating bypass of refrigerant from discharge to suction side of compressor Replace if defective When it is necessary to replace the reversing valve wrap it with a wet cloth and direct the heat away Excessive heat can damage the valve Reduced water flow Verify hydronic pump operation Troubleshoot pump operation Manually open water valve and measure water flow Replace or clean if dirty Plugged water strainer or filter Replace or clean if dirty Ambient losses Check for losses gains due to ambient air infiltration through doors and windows Address issue Low refrigerant charge Check superheat and subcooling values Check for refrigerant leaks If leaks found evacuate repair and recharge to factory recommended charge Scaled or plugged coaxial coil Check temperature drop across coaxial coil Clean if necessary Reduced water flow Check flow center operation Troubleshoot flow center Manually open water valve and measure water flow Adjust to proper flow rate Plugged water strainer or filter Replace or clean if dirty Water supply too hot Verify GEO IN with temperature probe Verify loop sizing bring water temperature within design parameters Water supply too cold Verify GEO IN with temperature probe Verify loop sizing bring water temperature within design parameters Restricted TXV Verify superheat and subcool
28. d water inlet pipe Also install a shutoff valve on the supply line to the unit as well as an air vent at the highest point of the system 6 Run DHW piping using a minimum of 1 2 OD copper tubing See Table 8 1 for recommended line sizes 7 Use a tee to connect the unit DHW out connection to the water heater drain connection Be sure to install a shutoff valve on the pipe as near to the water heater as possible 8 Reinstall the drain valve on one side of the tee Figure 8 1 Typical DHW Piping Diagram COLD HOT WATER WATER IN OUT X ro VENT gt lt n Fa e DHW OUT gt lt DRAIN CONNECTION DRAIN VALVE Figure 8 2 Typical DHW Piping Diagram with Two Tanks COLD HOT WATER WATER IN OUT AIR VENT HOT COLD K y WATER WATER OUT IN gt lt t D gt lt gt 1 HEATING SOURCE DISABLED N DHW OUT e len 3 ra gt Y DRAIN DRAIN VALVE Table 8 1 DHW Pipe Sizes Models DHW Flow gpm 1 2 Copper 3 4 Copper 036 1 2 50 E 048 amp 096 1 6 45 50 060 amp 120 2 0 25 50 066 amp 132 2 4 10 50 096 120 and 132 are stacked units data is for individual unit 9 Open all valves except the system drain valve and fill the system with water Bleed all air and check for leaks 10 Insulate all piping with
29. ded to ground and load loops as required Isolation valves are open water control valves or loop pumps wired DHW piping is complete all air purged from system and charged with water IMPORTANT Ensure all valves in the DHW circuit are fully open and pump is wired correctly Service access panels are in place Entering water temperatures are within operating limits in Table 14 1 A CAUTION Verify that ALL water control valves are open and allow water flow prior to engaging the compressor Freezing of the coax or water lines can permanently damage the heat pump A CAUTION To avoid equipment damage DO NOT leave system filled in a building without heat during the winter unless antifreeze is added to the water loop Heat exchangers never fully drain by themselves and will freeze unless winterized with antifreeze Controller Setup GH EH systems are pre programmed from the factory for easy installation no installer setup is required for the unit to function The DHW pump is not wired from the factory on all units This is done to protect the pump during installation and startup If a DHW pump is in the system it must be wired IMPORTANT Ensure that the freeze protection setpoint is properly set approximately 10 F above the fluid freeze point for the type and percentage of fluid used in the ground loop Table 12 1 Freeze Point of Pure Antifreeze Solutions F Propylene 5 0
30. efer to the control manual for instructions on enabling the pump Transformer Wiring The system supplies the power to the controller via a 24V transformer On 208V systems the transformer is factory wired and is ready for operation On 208 230V systems the transformer comes factory wired for 230V operation If the unit is to be powered with 208V the transformer must be wired for 208V A terminal strip with a jumper is provided for easy field configuration see Figure 10 1 Refer to the wiring diagram provided with the unit for details GEO16 504 2 9 INSTALLATION Figure 10 1 208 230V Transformer Wiring TRANSFORMER VOLTAGE JUMPER ORANGE 208 RED COM YELLOW BLACK YELLOW 24N BLUE L AS Hydronic Pump Wiring The hydronic pump must be connected to the terminal blocks in the electrical box The pumps will automatically be cycled as required by the unit Be sure to wire the pump prior to turning the system on Aquastat Wiring The aquastat wires are connected directly to the terminal blocks in the electrical box Flow Center Wiring The flow center must be connected to the terminal blocks in the electrical box The pumps will automatically be cycled as required by the unit Be sure to wire the flow center prior to turning the system on Sensor Wiring All sensors are factory wired and installed Open Loop Control Valve Wiring Always maintain water pressure in t
31. er Connection Breakdown Water Connections 1 All units utilize swivel pipe fittings for water connections that are rated for 150 psi 2 The connections have a rubber gasket seal similar to a garden hose gasket which when mated to the flush end of most 1 threaded male pipe fittings MPT provides a leak free seal without the need for thread sealing tape or joint compound 3 The water piping system should include pressure temperature taps for serviceability 4 Install the brass spacer and rubber gasket in swivel connector prior to attempting any connection as shown in Figure 7 1 rubber gasket and brass spacer kits are shipped with unit To make the connection mate the field supplied male pipe thread fitting against the rubber gasket in the swivel connector and thread the female locking ring onto the pipe threads while maintaining the brass elbow in the desired direction Tighten the connectors by hand and then gently snug the fitting with pliers to provide a leak proof joint 5 DO NOT OVERTIGHTEN as leaks may occur 6 NOTE Never use flexible hose smaller than 1 inside diameter on the unit Limit the length to 10 per connection in one direction Check carefully for leaks Factory installed Snap ring in this groove Swivel adaptor hand tighten lt Brass snap ring lt t Brass spacer mus 4 Rubber gasket Swivel adaptor hand tighten rex 474 P T Port access for
32. eversing valve de energized The compressor will be limited by a timer that will provide short cycle protection Open Loop Sysiems An optional valve can be fitted to stop water flow when the compressor is not energized This allows the variable pumping system to work more efficiently Table 13 1 Water Pressure Drop psi Based on Entering Water Temperature Pressure drop is for individual unit Table 13 2 Antifreeze Pressure Drop Corrections Antifreeze Solution Antifreeze Type Percent by Weight 15 1 12 Correction Factor Ethylene Glycol Propylene Glycol Ethanol Methanol Equation 13 1 Coaxial Coil Pressure Drop Antifreeze Correction To find actual pressure drop through either coaxial coil when the unit is operated with an antifreeze solution rather than water WPD WPD x ACF Where WPD Water Pressure Drop at Actual Conditions WPD Water Pressure Drop at Standard Conditions water from Table 18 1 Antifreeze Correction Factor from Table 18 2 GEO16 504 2 13 START UP PROCEDURE Table 14 1 Typical Operating Conditions Heating No Desuperheater Suction Discharge Source Water ossia Pressure Pressure E ee Temperature Drop psig psig F Entering Water Temperature CF 30 1 5 68 76 285 310 8 12 5 7 3 72 80 290 315 8 12 3 5
33. ght position Tilting units greater than 60 beyond horizontal may result in damage to the compressor If the unit is tilted past 60 do not energize the compressor until the unit has been upright for a minimum of 6 hours to prevent compressor damage Unit Protection To prevent damage keep the unit in its original packaging or cover with an equivalent protective covering while on the job site Cover open water connections to prevent debris from entering the system Take extra precautions to protect the unit from damage or contamination when in an area where spraying plastering and or painting has not been completed Physical damage or contamination from foreign debris may prevent proper start up and costly equipment clean up Examine all fittings valves or pipes and remove all dirt or debris before installing unit Preparation 1 Before installation ensure that the correct electrical power supplies are available for the unit 2 Each unit requires an independently fused and isolated power supply 3 Check to make sure that the units will have adequate installation clearance for easy access to remove all panels and access all internal components Provide ample area to access external components in and around the unit and System including water valves fittings and all electrical connections 4 Remove any accessory kits and shipping support material from the mechanical compartment 5 Check refrigerant piping for dents or
34. han rated Special PIeCautloris sucus dressed ord b eden dud 2 voltage Model Serial Number Designations 3 This unit contains R 410A high pressure refrigerant Unit DIMENSIONS e senare ede Rx ERR rH 4 Hazards exist that could result in personal injury or SI Metric Conversion Factors 6 death Installation maintenance and service must only Unit LOCATON 5 iud eise 6 be performed by an HVAC technician qualified in R 410A Installation 536b ERPRPRINR ted idedes 6 refrigerant and using proper tools and equipment Due Water lt 7 to much higher pressure of R 410A refrigerant DO NOT Hot Water Generator 8 USE service equipment or tools designed for refrigerants roter eleven apes aera don uus eee ee 9 other than R 410A Electri DE gs a a ectrical Specifications 11 When servicing or repairing this equipment use only Start Up 12 factory approved service replacement parts A complete Physical Dat 15 ysical Data verre eU Pure end replacement parts list may be obtained by contacting Maint 16 Modine Manufacturing Company Refer to the rating plate aintenance i iss al weed then wes on the appliance for complete appliance model number Replacement PAMS os aoa ate ail goa
35. he heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation during the off cycle Pilot operated slow closing valves are recommended to reduce water hammer If water hammer persists an expansion tank can be mounted on the piping to help absorb the excess hammer shock Slow closing valve must have an end switch that enables disables the compressor See Figure 10 2 for proper wiring Figure 10 2 Optional Open Loop Valve Wiring 1 Existing wire do not remove 2 Remove WHITE wire from CC LOW terminal on printed circuit board and splice to terminal 3 on valve 3 Wire CC LOW terminal to terminal 2 on valve 4 Wire Contactor to terminal 1 on valve 10 GEO16 504 2 ELECTRICAL SPECIFICATIONS Table 11 1 Electrical Ratings 9 amp 10 Power Code Rated Voltage 208 230 1 60 208 230 3 60 208 230 1 60 Voltage min max 197 258 197 258 197 258 Compressor RLA LRA Control 208 230 3 60 208 230 1 60 197 258 197 258 208 230 3 60 208 230 1 60 197 258 197 258 208 230 3 60 208 230 1 60 197 258 197 258 208 230 3 60 208 230 1 60 197 258 197 258 208 230 3 60 208 230 1 60 197 258 197 258 208 230 3 60 Stacked unit electrical data is for individual unit 197 258 GEO16 504 2 11 START UP PROCEDURE START UP PROCEDURE IMPORTANT S
36. ing values Replace if necessary Compressor Non condensables in system Compressor Troubleshoot compressor operation Verify superheat and subcooling values Make sure the compressor is not in direct contact with the base or sides of the cabinet Cold surroundings can cause liquid slugging increase ambient temperature If discharge pressure is too low and suction pressure too high compressor is not pumping properly Replace compressor Evacuate and recharge to factory recommended charge Remove compressor mounting bolts Rattles and vibrates Check for loose screws panels or internal components Tighten and secure Piping could be hitting the metal surfaces Add insulation between the contact Pump cavitation Purge air from closed loop system GEO16 504 2 START UP TROUBLESHOOTING FORM Customer Name Date Address Loop Type Model Serial Antifreeze Startup Troubleshooting Complaint COOLING CYCLE ANALYSIS GPM LOAD FLOW COMPRESSOR DISCHARGE SAT F EXPANSION FILTER VALVE DRIER F SUPERHEAT UNIT TOTAL AMP DRAW GPM FLASH GAS FD LIQ EXIT LIQUID LINE SUBCOOLING COMPRESSOR AMP DRAW SOURCE FLOW LINE VOLTAGE HEAT OF REJECTION SOURCE FLOW GPM X AT x 500 FOR WATER 485 ANTIFREEZE BTU HR HEATING CYCLE ANALYSIS PSIG SAT F GPM LOAD FLOW F
37. ive part returned without proper written authorization including but not limited to model number serial number date of failure etc and freight prepaid OPTIONAL SUPPLEMENTAL WARRANTY Provided a supplemental warranty has been purchased Seller extends the warranty herein for an additional four 4 years on certain compressors Provided a supplemental warranty has been purchased Seller extends the warranty herein for an additional four 4 years or nine 9 years on certain heat exchangers EXCLUSION OF CONSUMABLES amp CONDITIONS BEYOND SELLER S CONTROL This warranty shall not be applicable to any of the following items refrigerant gas belts filters fuses and other items consumed or worn out by normal wear and tear or conditions beyond Seller s control including without limitation as to generality polluted or contaminated or foreign matter contained in the air or water utilized for heat exchanger condenser cooling or if the failure of the part is caused by improper air or water supply or improper or incorrect sizing of power supply APPLICABLE WARRANTY PERIOD TEN YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER WITHIN TEN YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER WITHIN TEN YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION OR WITHIN ONE HUNDRED TWENTY SIX MONTHS FROM DATE OF SHIPMENT FROM SELLER WHICHEVER OCCURS FIRST Heat Exchangers Low Intensity Infrared Units
38. kinks 6 Inspect all electrical connections Connections must be clean and tight at the terminal Electrical Electrical wiring should be done in accordance with all applicable national and local codes It is the responsibility of the electrical contractor to adhere to such codes The warranty will be voided if wiring is not in accordance with the specifications of the unit Modine recommends using copper conductors only All power supply wiring must be capable of carrying the maximum current load under no fault conditions at the stipulated voltages Care should be taken to avoid significant voltage drops A knockout for power connection is provided on the access side of the unit See unit dimensions INSTALLATION IMPORTANT 1 The ground heat exchanger open or closed loop or water source to be connected to the unit must be designed constructed and prepared in accordance with industry guidelines IGSHPA ASHRAE NGWA etc and best practices and any more restrictive local codes and regulations by a qualified service agency Failure to properly size install or prepare the source could result in reduced performance a reduction in the normal life of the units and a hazard to persons and property Units selected for open loop ground source applications should have a cupronickel source coaxial heat exchanger to reduce mineral buildup and scaling Open loop systems should have the source coaxial coil flushed periodically to
39. maintain peak performance Installation of these units is to be INDOORS only The instructions detailed below are for the Installation of a Standard unit Accommodations and adjustments will be required for the usage of additional unit accessories Should assistance be required for the installation of these additional items consult Modine at the phone number listed on the back cover of this manual GEO16 504 2 INSTALLATION Unit Installation 1 Units should be mounted on a vibration absorbing pad slightly larger than the base of the unit See Table 7 1 below for Modine vibration pad part numbers If the unit isn t mounted on a vibration absorbing pad it must be raised off the floor to prevent damage due to accidental flooding It is not necessary to anchor the unit to the floor Table 7 1 Vibration Absorbing Pads High ones Plastic 32 X 32 36 X 36 5H0835220000 5H0835230000 048 132 2 Check to ensure that the unit is level in both directions and also plumb If adjustment is necessary Modine recommends the placement of metal shims in the outermost corners of the base 3 Provide adequate clearance for all access panels 4 Provide easy access for servicing water valves fittings and compressor 5 Provide access to the controller and all electrical connections 6 Provide a clear physical path to the unit Adequate space should be provided to allow removal of the unit if necessary Figure 7 1 Wat
40. rging should only be carried out by an EPA certified air conditioning contractor Inspection On Arrival 1 Inspect unit upon arrival In case of damage report it immediately to transportation company and your local factory sales representative 2 Check rating plate on unit to verify that power supply meets available electric power at point of installation 3 Inspect unit received for conformance with description of product ordered including specifications where applicable THIS MANUAL IS THE PROPERTY OF THE OWNER PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB SPECIAL PRECAUTIONS SPECIAL PRECAUTIONS THE INSTALLATION AND MAINTENANCE INSTRUCTIONS IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE SAFE EFFICIENT AND TROUBLE FREE OPERATION IN ADDITION PARTICULAR CARE MUST BE EXERCISED REGARDING THE SPECIAL PRECAUTIONS LISTED BELOW FAILURE TO PROPERLY ADDRESS THESE CRITICAL AREAS COULD RESULT IN PROPERTY DAMAGE OR LOSS PERSONAL INJURY OR DEATH THESE INSTRUCTIONS ARE SUBJECT TO ANY MORE RESTRICTIVE LOCAL OR NATIONAL CODES HAZARD INTENSITY LEVELS 1 DANGER Indicates an imminently hazardous situation which if not avoided WILL result in death or serious injury 2 WARNING Indicates a potentially hazardous situation which if not avoided COULD result in death or serious injury 3 CAUTION Indicates a potentially hazardous situation which if not avoided MAY result in minor or moderate injury 4 IM
41. rminal strip connections are designed to clamp down on the wires To properly connect the wires to the terminal strip 1 Push a small flat head screwdriver into the square hole on the terminal Press firmly until the screwdriver hits the back stop and opens the terminal see Figure 9 1 2 Remove approximately 3 8 of insulation from the end of the wire and push the stripped wire into the oval hole in the terminal 3 Remove the screwdriver Pull on the wire to make sure that it is securely clamped in the terminal 4 Make sure that the terminal clamp is in contact with bare wire insulation removed Figure 9 1 Terminal Strip Unit Power Connection Refer to the unit serial plate for unit voltage and phase Available power must be the same as indicated on serial plate Remove access panel and electrical box cover Using unit power knockout route power lines through unit and into main electrical panel Connect line voltage wires to the L1 and L2 amp 13 if three phase voltage lugs of the contactor Consult the unit electrical data on the serial plate for correct overcurrent protection sizing Connect ground wire to ground lug in electrical panel Replace electrical box cover and access panel prior to unit startup Hot Water Generator Pump Wiring The domestic hot water pump is not wired in the factory to prevent pump burnout in case the unit is powered before the domestic hot water tank is plumbed or full of water R
42. t controller Defective compressor overload Ensure that compressor is cool and overload has had sufficient time to reset Ohmmeter shows a resistance across R amp S terminals and OPEN or infinite resistance between C amp R or C amp S terminals If windings are open or overload is faulty replace compressor Compressor motor burn out or open windings Ohmmeter shows no resistance or OPEN between common and run terminals NOTE Make sure the compressor is rested Troubleshoot cause and replace motor Defective compressor contactor Voltage on line side and contactor pulled in but no voltage on one or both terminals on the load side Points damaged Replace contactor Voltage on line side 24VAC across contactor coil and no voltage on load side Bad coil replace contactor Loss of compressor run signal Voltage on line side of contactor verified and contactor won t pull in No 24VAC on compressor contactor coil when 24VAC is present at controller and controller fuse is intact Replace controller Defective run capacitor Unit is oversized Measure resistance across capacitor terminals If shorts exist capacitor is defective Verify load calculations and unit selection Replace if faulty Defective compressor overloads Ensure that compressor is cool and overload has had sufficient time to reset Ohmmeter shows a resistance across R amp S terminals and OPEN or infini
43. tart up and adjustment procedures must be performed by a qualified service agency The unit has been factory tested and set for proper operation but a full unit start up is recommended NOTE If any abnormal operation occurs during the startup procedure refer to the troubleshooting section NOTE Always start the system in heating mode Pre Start Checks Before applying power to heat pump use the following checklist to ensure a complete and proper installation Check that the supply voltage matches the unit supply voltage listed on the unit serial plate Verify that all wiring is secure and properly protected All high voltage wiring is correct including fuses breakers and wire sizes Trace circuits to insure that the unit has been wired according to the wiring diagram Check that the unit has no visible damage and that all the components are secure Check that all field electrical and mechanical work has been performed according to all applicable Federal State and Local codes Check the supply voltage to the unit is within 5 of the voltage on the unit serial plate Low voltage wiring for aquastat control wiring and the freeze protection setpoint completed Transformer wiring is correct Water supply to and load piping from heat pump is completed Piping completed water system cleaned and flushed of debris Air and debris are purged from ground and load loops Antifreeze ad
44. te resistance between C amp R or C amp S terminals If windings are open or overload is faulty replace compressor Wiring and controls Examine all wiring points GEO16 504 2 Tighten all wiring points TROUBLESHOOTING Table 21 1 Troubleshooting Low pressure cutout High pressure cutout Possible Cause Reduced water flow Check flow center operation Troubleshoot flow center Manually open water valve and measure water flow Adjust to proper flow rate Plugged water strainer or filter Replace or clean if dirty Scaled or plugged coaxial coil Water supply too cold Check temperature drop across coaxial coil Verify GEO IN with temperature probe Clean if necessary Verify loop sizing verify that all air has been purged from ground heat exchanger bring water temperature within design parameters Entering water too cold Measure return water temperature should be above 50 F Bring return water temperature within design parameters Reduced water flow Verify hydronic pump operation Troubleshoot pump Manually open water valve and measure water flow Adjust to proper flow rate Plugged water strainer or filter Replace or clean if dirty Low refrigerant charge Check for refrigerant leaks If leaks found evacuate repair and recharge to factory recommended charge Plugged bi flow filter drier Verify
45. tic water quality may result in debris buildup in the system A water softener is recommended with hard water greater than 10 grains or 170 total hardness Extreme hard water will require additional maintenance and should be considered with the DHW option as maintenance costs may outweigh potential savings Make sure all local electrical and plumbing codes are met for installing a hot water generator The installing contractor is responsible for performing the installation accordingly Water piping lengths must be kept at a minimum DO NOT use one way length greater than 50 Coaxial drain tees that provide an inlet and outlet to the heat pump from the drain connection are not recommended The decreased diameter of the inlet and outlet pipes to the heat pump make it possible for debris build up and completely stop the flow of water to and from the desuperheater All components should be located in a conditioned space that is maintained above 50 F at all times 1 Turn off power or fuel supply to the water heater 2 Close cold water supply valve to heater 3 Drain and flush the tank then remove the drain valve 4 Inspect the water heater cold water inlet pipe for a check valve and remove if present Failure to do so will result in damage to the unit 5 Use a tee to connect the cold water supply pipe to the DHW in connection on the unit Be sure to install a check valve rated for at least 1 2 PSI and a shutoff valve on the col
46. water flows are correct Replacement Parts For ease of identification when ordering replacement parts or contacting the factory about your unit please provide the complete model number and unit serial number This information can be found on the serial plate attached to your unit see Figure 17 1 When a component part fails a replacement part should be obtained by contacting your local distributor or Modine Sales Representative Your sales representative can assist with Return Material Authorizations RMAs and potential warranty claims The following details are required to process parts orders and warranty claims 1 Full description of part required including unit s model number 2 The complete unit s serial number 3 Completed Return Material Authorization RMA 4 An appropriate purchase order number For further information email modinegeothermal ccsportal com or call 1 877 679 4436 4GEO Figure 17 1 Serial Plate EXAMPLE Medi ne 1500 DeKoven Avenue Racine WI 53403 2552 Phone 1 866 823 1631 MODINE MAE IN 0 5 4 Ser al Number 111111 04020114212 1234 Hoge eee EET e Power Supply 208V 10 60Hz 10 X 48 is Supply Hater FLC Amps 4 2 1 2 Factory Charge 3 1 Lbs 1 4 Ka Design Pressure High 450psi Low 150psi Unit FLA Unit MCA Unit 17A 19 COMMON REPLACEMENT PARTS Compressor 5H102804 1611 Supply Motor 9F050090 Supply Blower 5H0834250001
47. y nor which has been subjected to misuse negligence or operating conditions in excess of those for which such equipment was designed This warranty does not cover the effects of physical or chemical properties of water or steam or other liquids or gases used in the equipment BUYER AGREES THAT SELLER S WARRANTY OF ITS PRODUCTS TO BE FREE FROM DEFECT IN MATERIAL AND WORKMANSHIP AS LIMITED HEREIN SHALL BE IN LIEU OF AND EXCLUSIVE OF ALL OTHER WARRANTIES EITHER EXPRESS OR IMPLIED WHETHER ARISING FROM LAW COURSE OF DEALING USAGE OF TRADE OR OTHERWISE THERE ARE NO OTHER WARRANTIES INCLUDING WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE WHICH EXTEND BEYOND THE PRODUCT DESCRIPTION CONFIRMED BY BUYER AND SELLER AS OF THE DATE OF FINAL AGREEMENT This warranty is void if the input to the product exceeds the rated input as indicated on the product serial plate by more than 5 on gas fired and oil fired units or if the product in the judgment of SELLER has been installed in a corrosive atmosphere or subjected to corrosive fluids or gases been subjected to misuse negligence accident excessive thermal shock excessive humidity physical damage impact abrasion unauthorized alterations or operation contrary to SELLER S printed instructions or if the serial number has been altered defaced or removed BUYER AGREES THAT IN NO EVENT WILL SELLER BE LIABLE FOR COSTS OF PROCESSING LOST PROFITS INJURY TO GOODWILL OR ANY OTHER CONSEQUEN
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