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Blomberg WNF 7341 AE20 Washer User Manual

1. xoa TIVOTHLLOH T3 ONVO S TIONIS 5 CT Idld LNCYON SNOLLVENDISANOD CIZPIOVIS MO TJHZLENCYOO ANY 3579 HONOYWHL O INI YOLDANNOD YANO Ig OM 1d SNOILO3NNOO H3MOd pins m o9 e di e gt APPLICATION AND LOCATION GENERAL The GT Series Geothermal Heat Pumps feature three sections GTA Air Coil Section GTB Blower Section and GTC Compressor Section which cover upflow bottom right left side return counterflow and horizontal left and right hand discharge applications The individual sections are shipped internally wired requiring duct connections thermostat wiring 230 208 volt AC power wiring refrigerant line connections and water piping The equipment covered in this manual is to be installed by trained experienced service and installation technicians For installations requiring the continued use of an existing gas or oil fired furnace add on cased
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3. 49 Figure 23 Winding ener cn 49 Figure 24 Drip ree tee 49 Figure 25 Control Connector Motor Half 50 Tables Table 1 Indoor Blower Performance 5 Table 2 Flow Rates for Various Fluids 5 Table 3 SpecifiCatiOnis 5 Table 4 Water Coil Pressure 6 Table 5 Electrical Heat Specifications 19 Table 6 Filter Sizing Chart Table 7 Control Circuit WING 22 Table 8 Constant Flow Valves aree 27 Table 9 Pre Charged Line Set Qty 42 Quick Reference Troubleshooting Chart 46 ETTIN These publications can help you install the air conditioner or heat pump You can usually find these at your local library or purchase them directly from the publisher Be sure to consult current edition of each standard National Electrical Code ANSI NFPA 70 Standard for the Installation ANSI NFPA 90A of Air Conditioning and Ventilating Systems Standard for Warm Air ANSI NFPA 90B Heating and Air Conditioning Systems Load Calculation for Residential ACCA Manual J Winter and Summer Air Conditioning Duct Design for Residential
4. Z Z Z AA LAKE Z za 222270 12 Z Z Z X ISU SINS SISSON AI 22 2 lt 7777770 BR SNES t 2 lt ZZ Z iii 0 SU RL R EEE POND ZX Z e ZZ ZZ Z A 15 Z Z ILD Z SUBMERSIBLE LE 2 lt Z x Z BUMP l 5 222202200222 4 _ 4 22 ZZ 7 y MIS 1607 X ZX Z2222 22222222 e SSSR 2 ARR 2100 5371 31 of 54 Manual Page DESUPERHEATER 0 9 5 DESCRIPTION The system is designed to heat domestic water using heat recovered from a water source unit s hot discharge gas LOCATION Because of potential damage from freezing or condensation the unit must be located in a conditioned space therefore the unit must be installed indoors Locate the storage tank as close to the geothermal heat pump and pump module as the installation permits Keep in mind that water lines should be a maximum of 25 feet long measured one way Also the vertical lift should not exceed 20 feet This is to
5. 1213 4 4PIN UNIT PLUG 7 5 PIN MOTOR m POWER PLUG 6m 2 gt 111 2 154 BLACK MODEL SR STCOOSYGTCRSYGTCIEY 1 OFF ON OFF 2 OFF OFF ON 3 5 OFF ON OFF 6 OFF ON CIRCUIT x BREAKER NONE 410 10 NONE 3A 3 OFF ON OFF ON 4 OFF OFF ON R NOTE SWITCH 4 MUST TURNED BLACKMHITE ON WHEN BLOWER IS CONVERTED TO COUNTERFLOW OR HORIZONTAL 9 u RIGHT DISCHARGE 8 1 x gt 5 5 5 5 mt 3 54 24VAC NR E 4 lt 12345873881 ONS SEC m 8 g w gt u m m 1 Of G Wi R ODDW2 Y2 C QO ECM 2 Q p CONTROL 3 2 8 s m FIELD CONNECTIONS TO THERMOSTAT m 5 AND CONDENSING SECTION ORANGE FOR 208V OPERATION MOVE THIS RED WRE TO 208V TRANSFORMER TAP 4117 100B Manual 2100 5371 Page 53 of 54 D TOTTE n peneuruuunir 14 ANE pes 54 V sapamo uonedo puou IM GST eS uei seS papune uam paeuun pane ueo s d71 Y TTA GL HOLS SM CIS Papur peeucurqi i aneno anej usse X
6. 1V3H XNV JOVLS LSul J TM 310N 2009 OOOO 1V3H 2 3983 3 39715 Y pees de 090 lt 0re 00D 2 UOQDSUUIOD 01 ONIHIM 1V LSOINH3H L 9 I e dm om gt GROUND LOOP EARTH COUPLED WATER LOOP APPLICATIONS NOTE Unit shipped from factory with 75 PSIG low pressure switch wired into control circuit and must be rewired to 55 PSIG low pressure switch for ground loop applications This unit is designed to work on earth coupled water loop systems however these systems operate at entering water without antifreeze temperature with pressures well below the pressures normally experienced in water well systems THE CIRCULATION SYSTEM DESIGN Equipment room piping design is based on years of experience with earth coupled heat pump systems The design eliminates most causes of system failure The heat pump itself is rarely the cause Most problems occur because designers and installers forget that a ground loop earth coupled heat pump system is NOT like a household plumbing system Most household water systems have more than enough water pressure either from the well pump of the municipal water system to overcome the pressure of head loss in 1 2 inch or 3 4 inch household plumbing A closed loop earth coupled heat pump system h
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9. Excessive Water Usage Liquid Refrigerant Flooding Back Compressor Liquid Refrigerant Flooding Back Reversing Valve Does Not Shift Compressor Compressor Runs Continuously Compressor Runs Continuously No Heating No Cooling Aux Heat on I D Blower Off Excessive Operation Costs Ice in Water Coil epo SERVICE HINTS 1 Caution owner to maintain clean air filters at all times Also not to needlessly close off supply and return air registers This reduces airflow through the system which shortens equipment service life as well as increasing operating costs 2 Check all power fuses or circuit breakers to be sure that they are the correct rating UNBRAZING SYSTEM COMPONENTS If the refrigerant charge is removed from a scroll equipped unit by bleeding the high side only it is sometimes possible for the scrolls to seal preventing pressure equalization through the compressor This may leave low side shell and suction line tubing pressurized If the brazing torch is then applied to the low side while the low side shell and suction line contains pressure the pressurized refrigerant and oil mixture could ignite when it escapes and contacts the brazing flame To prevent this occurrence it is important to check both the high and low side with manifold gauges before unbrazing ECM MOTOR This unit is equipped with an ECM motor It is important tha
10. SALON JINN SDYNOS YUMA 55200 uad SATA SSVdAd WNOLLdO Wadd SINTA CIHLOSNNOO JJOLnHS DINVL 2 5 I1LVAA LOH 5 SS v d c f BY 10 SVD ONLLSTXG SANTA 33r 1 4 55 HOIH CIHTNZLSNI AHOLOV 4 SA LVA 55 IN31SAS ANVL YALVAHYAdNSAG Manual 2100 5371 36 of 54 Page DESUPERHEATER CONTROL BOARD 1 If temperature difference is greater than 3 F SEQUENCE OF OPERATION then the control will continue to energize pump relay 2 If temperature difference is less than 3 F then the control will de energize the pump relay The desuperheating control board will make a determination whether or not to energize the pump relay inclusive on the control board 3 The control will next wait 10 minutes A It will constantly monitor inputs from two before repeating Step 1 above temperature sensors Inlet amp Outlet water sensors 15 The Over Temperature Limit Switch is placed in B It will constantly monitor the Y signal series with the line voltage Therefore continuity between L of line voltage and L of pump output is forced broken whe
11. VN gt NN Tw ueg L NN wep dog N Meos N N J x Z e b A X N x X x pi N X U Aptins 25 B 5 T T LORISOd E zu ONILONG 8 IVLNOZIHOH BLOWER CONVERSION FROM UPFLOW TO COUNTERFLOW OR HORIZONTAL RIGHT DISCHARGE Following the directions on Figure 3 for counterflow and horizontal right discharge the indoor blower must be removed and turned over in its mounting configuration e Step1 Remove both front service panels from the GTBI A Remove two screws securing blower at top of GTB1 A See Figure 3 and slide the blower forward and out of the chassis Step 2 Step3 Remove two screws from front fill plate on bottom of GTB1 A and slide both pieces of metal forward and out of chassis Step4 Dip switch 4 on blower tap select control must be turned Refer to Wiring Diagram 4117 100 While turning on tap 4 above adjust the other taps accordingly for the tonnage of unit being applied Refer to Wiring Diagram 4117 100 Turn blower over and slide into rails of bottom rear of the GTBI A front fill plate that was removed in Step 3 above Step 5 Step 6 Step7 Remove bottom rear fill plate from bottom front fill plate discard rear and rese
12. GENERAL All wiring must be installed in accordance with the National Electrical Code and local codes In Canada all wiring must be installed in accordance with the Canadian Electrical Code and in accordance with the regulations of the authorities having jurisdiction Power supply voltage must conform to the voltage shown on the unit serial plate A wiring diagram of the unit is attached to the inside of the electrical cover The power supply shall be sized and fused according to the specifications supplied A ground lug is supplied in the control compartment for equipment ground The unit rating plate lists a Maximum Time Delay Fuse or type circuit breaker that is to be used with the equipment The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor CONTROL CIRCUIT WIRING The minimum control circuit wiring gauge needed to insure proper operation of all controls in the unit will depend on two factors 1 The rated VA of the control circuit transformer 2 The maximum total distance of the control circuit wiring Table 6 should be used to determine proper gauge of control circuit wiring required For low voltage connections see Figure 6 There are multiple options based upon the type of installation in regards to low voltage electrical connections and what options are selected
13. GT A UD Geo Trio 3600 3 Ton Revision A E Coated Coils 4860 4 amp 5 Ton Level A Coil Section Series Option Fossil Fuel A Coil Section GT ADP _ 3642 _ Geo Trio 3642 3 Ton B 17 50 Wide Furnace C 21 00 Wide Furnace ADP Advanced 3080 5 8 S Distributor Products Blower Section GT B A Geo Trio Revision A 230 Volt 1 Phase B Blower Section Option Compressor Section GT 36 5 2 5 Step Capacity D Desuperheater X Future Option Use Nominal Capacit Compressor 36 der 27 230 Volt 1 Phase Section 48 48K eve 60 60K Manual 2100 5371 4of54 N Cupronickel Coil TABLE 1 INDOOR BLOWER PERFORMANCE RATED CFM 9 Mild Climate Tm MODEL Rated MAX Continuous Operation Part Load Pod Electric Heat ESP ESP Airflow in Part Load Airflow Airflow Area Ft 2 Cooling GTC36S2 0 15 0 60 600 700 850 1200 1300 2 6 GTC48S2 0 20 0 60 750 875 1075 1500 1600 3 2 GTC60S2 0 20 0 60 900 1050 1300 1800 1800 3 6 Motor will automatically step through the various airflows with thermostatic control ESP External Static Pressure inches of water Maximum allowable duct static Continuous airflow is the CFM being circulated with manual fan operation without any additional function occurring Will occur automatically for first 5 minutes of Part Load Cool
14. 4 Check system airflow for obstructions A Move thermostat fan switch to ON Blower runs B Be sure all registers and grilles are open C Move thermostat fan switch to AUTO Blower should stop 5 Fully open the manual inlet and outlet valves 6 Check water flow A Connect a water flow meter to the drain cock between the constant flow valve and the solenoid valve Run a hose from the flow meter to a drain or sink Open the drain cock B Check the water flow rate through constant flow valve to be sure it is the same as the unit is rated for Example 6 GPM for a GTC36S2 C When water flow is okay close drain cock and remove the water flow meter The unit is now ready to start 7 Start the unit in cooling mode by moving the thermostat switch to cool Fan should be set for AUTO A Check to see the solenoid valve opened 8 Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated water flow and entering water temperatures If the refrigerant pressures do not match check for airflow problem and then refrigeration system problem 9 Switch the unit to the heat mode by moving the thermostat switch to heat Fan should be set for AUTO A Check to see the solenoid valve opened again 10 Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual Once again if they do not match check for airflow pr
15. A coils are available Two 3 ton coils designed to fit standard B and C width furnaces and one 4 5 ton coil designed for a cabinet are available Refer to Page 4 of this manual for the model nomenclature and the specification sheet for performance data For top discharge oil furnaces the coil drain pan MUST be located a minimum of 6 inches above the top of the furnace cabinet Two coil spacer accessories are available to fit Bard oil furnaces CSADP2220 22 x 20 x 6 All models except 140 000 Btu Low Boy CASDP2520 25 x 20 x 6 140 000 Btu Low Boy only For all other brands a coil support system must be field fabricated to maintain the 6 spacing These instructions and any instructions packaged with any separate equipment required to make up the entire heat pump system should be carefully read before beginning the installation Note particularly any tags and or labels attached to the equipment While these instructions are intended as a general recommended guide they do not in any way supersede any national and or local codes Authorities having jurisdiction should be consulted before the installation is made SHIPPING DAMAGE Upon receipt of the equipment the carton should be checked for external signs of shipping damage If damage is found the receiving party must contact the last carrier immediately preferably in writing requesting inspection by the carrier s agent APPLICATION
16. 2100 537I 29 of 54 Manual Page 4 Scale Formation Of all the water problems the formation of scale by ground water is by far the most common Usually this scale is due to the formation of calcium carbonate but magnesium carbonate or calcium sulfate may also be present Carbon dioxide gas CO the carbonate of calcium and magnesium carbonate is very soluble in water It will remain dissolved in the water until some outside factor upsets the balance This outside influence may be a large change in water temperature or pressure When this happens enough carbon dioxide gas combines with dissolved calcium or magnesium in the water and falls out of solution until a new balance is reached The change in temperature that this heat pump produces is usually not high enough to cause the dissolved gas to fall out of solution Likewise if pressure drops are kept to a reasonable level no precipitation of carbon dioxide should occur REMEDIES OF WATER PROBLEMS Water Treatment Water treatment can usually be economically justified for water loop systems However because of the large amounts of water involved with a ground water system water treatment is generally too expensive Acid Cleaning the Water Coil or Heat Pump Recovery Unit If scaling of the coil is strongly suspected the coil can be cleaned up with a solution of Phosphoric Acid food grade acid Follow the manufacturer s directions for mixing use etc Refer to the Cleanin
17. 265 280 304 328 351 375 399 422 446 470 75 Low Side 109 111 113 115 117 119 121 122 124 125 127 128 129 130 131 132 133 62 WB High Side 148 162 176 191 205 220 234 249 263 285 306 328 349 371 392 413 435 GTC48S2 80 DB Low Side 117 119 121 123 125 127 129 131 133 134 135 137 138 139 140 141 142 67 WB High Side 151 166 181 196 211 226 240 255 270 292 314 336 358 380 402 424 446 85 DB Low Side 126 128 130 132 134 137 139 141 143 144 145 147 148 149 151 152 153 72 WB High Side 157 172 187 203 218 233 249 264 279 302 325 348 371 393 416 439 462 75 DB Low Side 116 117 117 117 117 118 118 118 119 120 122 123 125 127 128 130 131 62 WB High Side 139 154 169 183 198 213 228 243 257 278 298 318 338 358 378 398 419 GTC60S2 80 DB Low Side 124 125 125 125 126 126 126 127 127 129 130 132 134 135 137 139 140 67 WB High Side 143 158 173 188 203 219 234 249 264 285 305 326 347 367 388 409 429 85 Low Side 134 134 134 135 135 135 135 136 137 138 140 142 144 145 147 149 151 72 WB High Side 148 163 179 195 210 226 242 258 273 295 316 337 359 380 402 423 444 FULL LOAD HEATING Fluid Temperature Entering Water Coil F Temperature 10 15 GTC36S2 70 DB Low Side 45 52 59 66 72 79 86 93 99 106 117 129 140 151 162 174 185 High Side 242 2
18. Feel the Water to Unit and Water from Water Heater tubes for noticeable difference in temperature Turn OFF the system and verify that the circulating pump stops NOTE When checking the refrigerant operating pressures of the ground source heat pump The desuperheater must be turned off With the desuperheater operating a wide variance in pressures can result giving the service technician the indication there is a charge problem when the unit is operating correctly MAINTENANCE CLEANING THE HEAT EXCHANGER If scaling of the coil is strongly suspected the coil can be cleaned with a solution of phosphoric acid food grade acid Follow the manufacturer s directions for the proper mixing and use of cleaning agent Manual 2100 5371 Page 33 of 54 GTC LOW VOLTAGE TER FIGURE 14 WIRING DIAGRAM COMPRESSOR CONTACTOR SIGNAL FROM GEOTHERMAL LOGIC CONTROL Manual Page DESUPERHEATER I PUMP CONTROL RED TD BLACK Ree LOGIC j BLACK 2 THERMISTOR e BLACK BLACK ME RED BLACK LINE VOLTAGE OVER TEMP LIMIT DESUPERHEATER 2 3 PUMP PLU 1111 MIS 2844 Y BS Bg PUMP EX MOTOR BI
19. These options include a motorized valve or motorized valve with end switch for ground water applications and optional electric duct heater connections NOTE Review the lettered triangles and the corresponding notes on the lower right hand corner of Figure 6 When options are not used the wires will need attached to the reference points accordingly Example 1 Control Circuit transformer rated at 50 VA 2 Maximum total distance of control circuit wiring 85 feet From Table 7 minimum of 16 gauge wire should be used in the control circuit wiring Manual 2100 5371 Page 220f54 TABLE 7 CONTROL CIRCUIT WIRING Rated VA of Control Circuit Transformer Maximum Total Distance of Control Circuit Wiring in Feet Transformer Secondary FLA 24V 20 gauge 45 18 gauge 60 16 gauge 100 14 gauge 160 12 gauge 250 WALL THERMOSTAT SELECTION The wall thermostat selection is important in that it needs to be minimally 2 stage heat and 2 stage cool for applications without electric heat For applications with electric heat the thermostat will need to minimally be 3 stage heat and 2 stage cool The second bank of electric heat when equipped should be wired through a secondary relay for operation only in Emergency Heat Mode at which point compressor operation should be disabled Refer to Figure 6 on the following page for typcial thermostat connections Low Voltage Connection These units use a grounded 24
20. irregularities unconsciousness and ultimate death can result from breathing this concentration 5 Do not burn R 410A This decomposition produces hazardous vapors Evacuate the area if exposed Use only cylinders rated DOT4BA 4BW 400 7 Never fill cylinders over 80 of total capacity 8 Store cylinders in a cool area out of direct sunlight 9 Never heat cylinders above 125 F 10 Never trap liquid R 410A in manifold sets gauge lines or cylinders R 410A expands significantly at warmer temperatures Once a cylinder or line is full of liquid any further rise in temperature will cause it to burst FIGURE 21 PRESSURE TABLES MUS Return Air DES FULL LOAD COOLING Fluid Temperature Entering Water Coil F Temperature 30 F 35 F 40 F 45 F 50 F 55 F 60 65 F 70 F 75 80 85 F 90 F 95 F 100 105 110 F 75 DB Low Side 108 111 113 116 118 121 123 126 128 129 129 130 131 131 132 132 133 62 WB High Side 148 163 177 192 206 221 235 250 264 286 309 331 353 376 398 420 442 GTC36S2 80 DB Low Side 116 118 121 124 126 129 132 134 137 138 138 139 140 140 141 142 142 67 WB High Side 152 167 182 196 211 226 241 256 271 294 317 340 362 385 408 431 454 85 DB Low Side 124 127 130 133 136 139 142 144 147 148 149 149 150 151 152 152 153 72 WB High Side 157 173 188 203 219 234 250
21. 5 minutes before opening motor Symptom Motor won t start No movement Motor rocks but won t start Motor oscillates up load amp down while being tested off of blower Motor starts but runs erratically Varies up and down or intermittent Hunts or puffs at high CFM speed Stays at low CFM despite system call for cool or heat CFM Stays at high CFM Blower won t shut off Excessive noise Air noise Manual 2100 5371 Page 48 of 54 Cause Procedure e This is normal start up for ECM e Check blower turns by hand Check power at motor Check low voltage 24 Vac R to C at motor Check low voltage connections G Y W R C at motor Check for unseated pins in connectors on motor harness Test with a temporary jumper between 6 Check motor for tight shaft Perform motor control replacement check Perform Moisture Check Check for loose or compliant motor mount Make sure blower wheel is tight on shaft Perform motor control replacement check It is normal for motor to oscillate with no on shaft Check line voltage for variation or sag Check low voltage connections G Y W R C at motor unseated pins in motor harness connectors Check for erratic CFM command in variable speed applications Check out system controls Thermostat Perform Moisture Check Does remov
22. LOW PRESS LIQUID DISTRIBUTOR h lt lt J acm SERVICE EQUALIZER TUBE EQUALIZER lt B EXPANSION m EN VALVE BULB i I i MRESSIP N M pue IL REVERSING i wE 1 EXPANSION VALVE BULB h EXPANSION VALVE 2 EQUALIZER TUBE i 1 LL 1 1 1 1 1 SS tt FILTER DRIER i 1 Mc E WATER COIL 57 7 ES 1 EXPANSION VALVE MIS 2822 HIGH PRESS VAPOR LOW PRESS VAPOR PRESS LIQUID n LOW PRESS LIQUID I ere EQUALIZER TUBE EQUALIZER n EXPANSION N VALVE BULB Jl i i COMPRESSOR 2 i i x Eumene REVERSING VALVE i EXPANSION 541 i VALVE BULB EXPANSION VALVE EQUALIZER TUBE S BIR FILTER DRIER f EXPANSTON VALVE MIS 2823
23. Manual Page 2100 5371 41 of 54 REFRIGERANT CHARGE ________________ LINE SET INSTALLATION GTA COIL SECTIONS CHARGE ADJUSTMENT All supplied line sets with threaded refrigerant connections are factory evacuated and charged with R 410A refrigerant at the quantity required to optimize system performance Refer to Table 9 to see this charge quantity if you need to reprocess the charge due to repairing damage or replacement of a defective component For those using Stub Kits GTLS SK2 1 or GTLS SK4 1 you will first need to braze up both ends of your line set to the point that it is sealed Ports are provided on the GTLS SK 1 kits so that you can pull a vacuum on the line set and pre charge with refrigerant before screwing on the refrigerant fittings onto the pre charged condenser and evaporator if using one with threaded connectors For charge quantity use Table 9 as a good general reference to the required R 410A refrigerant required based upon your line set length Or you can specifically measure your line set length and add 1 4 ounces of R 410A refrigerant per 1 of line set length REFRIGERANT FITTING ATTACHMENT 1 Coat all mating surface including o rings with R 410A refrigerant oil Polyol Ester 2 Attach female fittings to coil condensing unit portion by hand threading initially Be careful not to cross thread assembly For the pre manufactured 3 line set used with a vertical stacked configuration the fit
24. There are 10 adjustments that are enabled on the tap select control that will allow you to increase or decrease the air volume plus or minus 10 Increasing the air volume may help with some slightly increased capacity and increased duct velocity if there is an air distribution issue Decreasing the air volume with help improve latent capacity in a humid application and will help to lower air distribution sound levels Please see Wiring Diagram Page 53 which details the required dip switch changes for this adjustment PART LOAD COOLING When thermostat system switch is placed in COOL it completes a circuit from R to O energizing the reversing valve solenoid On a call for cooling the thermostat completes a circuit from to 1 sending the signal to both the Tap Select Control located in the blower section and to the Geothermal Logic Control located in the compressor section The tap select control uses the input signal versus the motor program and the dip switch settings to determine the proper air volume rate to operate The Geothermal Logic Control verifies that the High Pressure Switch the Low Pressure Switch and the Freeze Stat controls are all in the closed position It then energizes the A terminal ouput to start the flow center Ground Loop Applications or energizes the water solenoid Ground Water Water Loop Applications Following 10 seconds of the terminal energization the compre
25. against the heating refrigerant pressure table in installation manual Once again if they do not match check for airflow problems and then refrigeration system problems NOTE If a charge problem is determined high or low A Check for possible refrigerant leaks B Recover all remaining refrigerant from unit and repair leak C Evacuate unit down to 29 inches of vacuum D Recharge the unit with refrigerant by weight This is the only way to insure a proper charge 2100 5371 25 of 54 Manual Page FIGURE 8 NOTE Slide retaining cap back to expose double o rings Apply petroleum jelly to o rings to prevent damage and aid in insertion Thermometer Dial face pressure guage with guage adaptor Retaining cap hand tighten only MIS 2622 A FIGURE 9 PERFORMANCE MODEL DORFC 1 FLOW CENTER Head Feet 0 5 10 15 20 25 30 35 Flow GPM FIGURE 10 PERFORMANCE MODEL DORFC 2 FLOW CENTER Head Feet 0 5 10 15 20 25 30 35 Flow GPM Manual 2100 5371 Page 26 0154 GROUND WATER WELL SYSTEM APPLICATIONS NOTE Unit shipped from factory with 60 PSIG low pressure switch wired into control circuit for ground water applications WATER CONNECTIONS It is very important that an adequate supply of clean non corrosive water at the proper pressure be provided before the installation is made Insufficient water in the
26. air mover Do Don t Check out motor controls Automatically assume the motor is bad wiring and connections thoroughly before replacing motor Orient connectors down so Locate connectors above 7 and 4 o clock water can t get in positions Install drip loops Use authorized motor and model s for replacement Keep static pressure to a minimum Recommend high efficiency low static filters Recommend keeping filters clean Design ductwork for min static max comfort Look for and recommend ductwork improvement where necessary Replace one motor or control model with another unless an authorized replacement Use high pressure drop filters some have 1 2 H20 drop Use restricted returns Size the equipment wisely Oversize system then compensate with low airflow e Check orientation before Plug in power connector backwards inserting motor connectors Force plugs Moisture Check Connectors are oriented down or as recommended by equipment manufacturer Arrange harness with drip loop under motor condensate drain plugged Check for low airflow too much latent capacity Check for undercharged condition Check and plug leaks in return ducts cabinet Comfort Check Check proper airflow settings Low static pressure for lowest noise Set low continuous fan CFM Use humidistat and 2 speed cooling units Use zoning con
27. gently pulling the connector DO NOT PULL ON THE WIRES GRIP THE PLUG ONLY Refer to Figure 22 6 The control module is now completely detached from the motor Verify with a standard ohmmeter that the resistance from each motor lead in the motor plug just removed to the motor shell is gt 100K ohms Refer to Figure 23 Measure to unpainted motor end plate If any motor lead fails this test do not proceed to install the control module THE MOTOR IS DEFECTIVE AND MUST BE REPLACED Installing the new control module will cause it to fail also 3 7 Verify that the replacement control is correct for your application Refer to the manufacturer s authorized replacement list USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION Orient the control module so that the 3 wire motor plug can be inserted into the socket in the control Carefully insert the plug and press it into the socket until it latches SLIGHT CLICK WILL BE HEARD WHEN PROPERLY INSERTED 8 Reverse the steps 5 4 3 to reconnect the motor control to the motor wires securing the motor control cover plate mounting the control to the bracket and mounting the motor control bracket back into the unit MAKE SURE THE ORIENTATION YOU SELECT FOR REPLACING THE CONTROL ASSURES THE CONTROL S CABLE CONNECTORS WILL BE LOCATED DOWNWARD IN THE APPLICATION SO THAT WATER CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL DO NOT OVERTIGHTEN THE BOLTS 9 Plug the 1
28. heating mode for example will cause the low pressure switch to trip shutting down the heat pump In assessing the capacity of the water system it is advisable that the complete water system be evaluated to prevent possible lack of water or water pressure at various household fixtures whenever the heat pump turns on All plumbing to and from the unit is to be installed in accordance with local plumbing codes The use of plastic pipe where permissible is recommended to prevent electrolytic corrosion of the water pipe Because of the relatively cold temperatures encountered with well water it is strongly recommended that the water lines connecting the unit be insulated to prevent water droplets from condensing on the pipe surface Refer to piping Figure 11 Slow open close with End Switch 2 24V provides on off control of the water flow to the unit Refer to the wiring diagram for correct hookup of the valve solenoid coil Constant Flow Valve 3 provides correct flow of water to the unit regardless of variations in water pressure Observe the water flow direction indicated by the arrow on the side of the valve body Following is a table showing which valve is to be installed with which heat pump TABLE 8 CONSTANT FLOW VALVES Min Available Flow Rate Pressure PSIG GPM 1 The pressure drop through the constant flow valve will vary depending on the available pressure ahead of the valve Unless minimum of 15 psig is available
29. in surface area for each 50 000 BTUs of ground water heat pump capacity or have 2 times the cubic feet size of the dwelling that you are trying to heat includes basement if heated The average water depth should be at least 4 feet and there should be an area where the water depth is at least 12 to 15 feet deep FIGURE 12 CLEANING WATER COIL HOSE BIB B If possible use a submersible pump suspended the dry well casing Jet pumps and other types of suction pumps normally consume more electrical energy than similarly sized submersible pumps Pipe the unit the same as a water well system Size the pump to provide necessary GPM for the ground water heat pump A 12 GPM or greater water flow rate is required on all models when used on this type system A pressure tank should be installed in dwelling to be heated adjacent to the ground water heat pump A pressure switch should be installed at the tank for pump control All plumbing should be carefully sized to compensate for friction losses etc particularly if the pond or lake is over 200 feet from the dwelling to be heated or cooled Keep all water lines below low water level and below the frost line Most installers use 4 inch field tile rigid plastic or corrugated for water return to the lake or pond The drain line discharge should be located at least 100 feet from the dry well location J The drain line should be installed wit
30. of Energy recommends a figure of 16 07 gallons of hot water per day per individual For example a family of four would require 64 3 gallons per day 4 x 16 07 ONE TANK The single hot water tank may be a new hot water heater sized to 100 of daily water requirements or the existing water heater in the case of a retrofit installation The existing water heater should be drained and flushed to remove all loose sediment This sediment could damage the circulating pump The bottom heating element should be disconnected NOTE Make sure water heater thermostats are set below 125 on One Tank Unit WATER PIPING All water piping must adhere to all state and local codes Refer to piping diagrams for recommended one and two tank installations Piping connections are 1 2 inch nominal copper plumbing cleanable type strainer should also be included to collect any sediment DES UPERHEATER OPERATION OF THE HEAT RECOVERY UNIT The pump module is a very simple device containing basic controls and a circulating pump Heat is transferred from the hot refrigerant discharge gas to the cool water The operation of the Desuperheater Pump Module is controlled first by the operation of the Geothermal Heat Pump and secondly by internal controls within the Pump Module A low voltage signal from Thermostat Y is connected to the desuperheater control board and acts as the primary on off switch for the circulating pump Also co
31. removal Purge with small amount of nitrogen when inserting plugs TOPPING OFF SYSTEM CHARGE If a leak has occurred in the system reclaiming evacuating see criteria above and charging to the nameplate charge is recommended Topping off the system charge can be done without problems With R 410A there are no significant changes in the refrigerant composition during multiple leaks and recharges R 410A refrigerant is close to being an azeotropic blend it behaves like a pure compound or single component refrigerant The remaining refrigerant charge in the system may be used after leaks have occurred and then top off the charge by utilizing the charging charts on the inner control panel cover as a guideline REMEMBER When adding R 410A refrigerant it must come out of the charging cylinder tank as a liquid to avoid any fractionation and to insure optimal system performance Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction Manual 2100 5371 Page 44 of 54 SAFETY PRACTICES 1 Never mix R 410A with other refrigerants 2 Use gloves and safety glasses Polyol Ester oils can be irritating to the skin and liquid refrigerant will freeze the skin 3 Never use air and R 410A to leak check the mixture may become flammable 4 Do not inhale R 410A the vapor attacks the nervous system creating dizziness loss of coordination and slurred speech Cardiac
32. volt AC low voltage circuit and require at least a 2 stage heating and a 2 stage cooling thermostat R terminal is 24 VAC hot terminal is 24 VAC grounded terminal is the fan input 1 terminal is the compressor part load input Y2 terminal is the compressor full load input terminal is the reversing valve input The reversing valve must be energized for cooling mode L terminal is the check light output compressor lockout This terminal is activated on high pressure switch low pressure switch condensate overflow or freeze stat trip This is a 24 VAC output W1 terminal is first stage electric heat input If equipped terminal is the emergency heat input This energizes the emergency heat relay and should be utilized to limit the amount of electric heat with the geothermal heat pump operational to limit outlet air temperature W2 terminal is the second stage electric heat input If equipped fuum jeuondo doo Jae punoa ueuw pesn Pinoys DuuW PUB OM JO LAM Ce AM UM RARE yams pug noun peazuqau jou sue jou uam pauu syuiod WAT ONMOOD OL LSNN S O lt pe g auu M
33. 0 eu So Nr E cO gt INOtId WILLS ADV LION ATINI 13 UNO LNO Ha vA E 1 3 UNO ANO IHH3 AO _ 13 UNO NMN 50901 OV SUL 6E 59201 V STO CLOB L ONISN u3HLJOOL SNOLLOAS 3 1235 115 1491 OE HEY li SU ve HEFT Hl AINO MOTAN EZ TTE 1 p WOT E ZE 4 P TS M SS 99 6S Si d 22 L qui SNOLLDSNNOD 7 TE de SNOISN3MWIG MO THH3LN1OO Q318W3SSV 3l 11 of 54 Manual 2100 5371 Page M N PIS 34014 Th EXE PISHT E LY EM eh ND I ZH LLO I pow 1u021
34. 111 120 131 143 154 165 176 188 199 High Side 238 247 256 264 273 288 296 305 317 328 337 346 354 363 372 381 389 GTC48S2 70 DB Low Side 20 31 43 54 66 77 89 100 109 117 129 140 152 163 175 186 198 High Side 228 238 247 257 266 281 291 300 311 322 332 341 351 360 370 379 389 GTC60S2 70 DB Low Side 27 38 48 58 68 79 89 99 109 119 129 140 150 160 170 181 191 High Side 236 247 257 268 278 294 305 315 326 336 347 357 368 378 389 399 410 LOW SIDE PRESSURE 2 PSIG HIGH SIDE PRESSURE 5 PSIG Tables based upon rated CFM airflow across the evaporator coil If incorrect charge suspected more than 2 psig suction 5 psig liquid it is recommended refrigerant charge be reclaimed system evacuated and charged to serial plate quantity Manual 2100 5371 Page 45 of 54 QUICK REFERENCE TROUBLESHOOTING CHART FOR WATER AIR HEAT PUMP Manual Page WATER COIL SECTION POWER SUPPLY INDOOR SECTION B Water Coil ev Valve Refrigerant System Compressor Control Circuit Line Voltage e Denotes common cause 2100 537I 46 of 54 eT a e sr i TL ERE ES E BEI 10 uedo xonis pasoo
35. 281 301 321 341 362 382 402 422 75 DB Low Side 119 121 123 125 127 129 132 134 136 137 137 138 139 140 141 142 143 62 WB High Side 131 146 160 174 189 203 217 231 246 266 287 308 328 349 370 390 411 GTC48S2 80 DB Low Side 128 130 132 134 136 139 141 143 145 146 147 148 149 150 151 152 153 67 WB High Side 135 149 164 179 193 208 223 237 252 273 294 316 337 358 379 400 421 85 DB Low Side 137 140 142 144 147 149 151 154 156 157 158 159 160 161 162 163 164 72 WB High Side 139 155 170 185 200 215 230 246 261 283 305 327 348 370 392 414 436 75 DB Low Side 127 127 127 127 128 128 128 129 129 130 131 131 132 133 134 134 135 62 WB High Side 122 137 152 167 182 197 212 227 242 262 282 302 322 342 362 382 402 GTC60S2 80 DB Low Side 135 136 136 136 137 137 137 138 138 139 140 141 141 142 143 144 145 67 WB High Side 125 141 156 171 187 202 217 233 248 269 289 310 330 351 371 392 412 85 DB Low Side 145 146 146 147 147 147 148 148 148 149 150 151 152 153 154 155 156 72 WB High Side 130 146 161 177 193 209 225 241 257 278 299 320 342 363 384 405 426 Return Air PART LOAD HEATING Fluid Temperature Entering Water Coil F Model Pressure Temperature 5 10 15 F 20 25 F 30 F 35 F 40 45 F 50 F 55 F 60 F 65 F 70 75 F 80 85 F GTC36S2 70 DB Low Side 23 35 46 57 68 80 91 102
36. 401 saumboy A Ppag Yoddns uomes UONISOd JEILIOZLIOH UI pue SNOISN3MWIG NOILVOMddV TVINOZIHOH d Manual 2100 537I 12 of 54 Page u 24 o 1043u0 222196 dp uo sasnbay ALON JEUN Ul aqu uosnod UE day pue moydn umnaucpog Uope e Su UMA epis peuinbeu pergens prey JO LX S x 9T EZH SUDO Je AN UONISOd PS Ul vog i TIRAMA m 5 HOD puo l l L JE 1 0 IAMA rS 1 S eur B E O no AM 0D puo x 7 NIN UN Jo LT Z exc VU AURQUOQD8S UORISOd Moyan ONILONG MOTAdN Vc So e 25 on gt 02 61 uo ees eui 10
37. 52 262 272 282 292 302 312 322 332 342 353 363 373 383 394 404 GTC48S2 70 DB Low Side 36 44 52 60 68 76 84 92 100 108 119 129 140 150 161 171 182 High Side 247 258 270 281 293 304 316 327 339 350 361 372 383 394 405 416 427 GTC60S2 70 DB Low Side 38 46 54 62 70 78 86 94 102 110 118 126 134 142 150 158 166 High Side 264 273 282 292 301 310 319 329 338 347 357 366 376 385 395 404 414 Pressure 20 F 25 F 30 F 35 F 40 F 45 F 50 55 F GOT 65 70F 75 F 80 85 25 Return Air B PART LOAD COOLING Fluid Temperature Entering Water Coil F ode ressure Temperature 30 35 F 40 45 F 50 F 55 F 60 F 65 F 70 75 80F 859 90F 95 F 100 F 105 F 110 75 DB Low Side 116 119 121 123 126 128 130 133 135 135 135 135 135 135 136 136 136 62 WB High Side 130 144 159 173 188 202 216 231 245 265 284 303 322 341 360 379 398 GTC36S2 80 DB Low Side 124 127 129 132 134 137 139 142 144 144 145 145 145 145 145 145 145 67 WB High Side 133 148 163 177 192 207 222 237 252 271 291 310 330 349 369 389 408 85 DB Low Side 134 136 139 142 144 147 150 153 155 155 155 156 156 156 156 156 156 72 WB High Side 138 153 168 184 199 214 230 245 261
38. 6 pin control plug into the motor The plug is keyed Make sure the connector is properly seated and latched 10 Plug the 5 pin power connector into the motor Even though the plug is keyed OBSERVE THE PROPER ORIENTATION DO NOT FORCE THE CONNECTOR It plugs in very easily when properly oriented REVERSING THIS PLUG WILL CAUSE IMMEDIATE FAILURE OF THE CONTROL MODULE 11 Final installation check Make sure the motor is installed as follows a Motor connectors should be oriented between the 4 o clock and 8 o clock positions when the control is positioned in its final location and orientation b Add a drip loop to the cables so that water cannot enter the motor by draining down the cables Refer to Figure 24 The installation is now complete Reapply the AC power to the HVAC equipment and verify that the new motor control module is working properly Follow the manufacturer s procedures for disposition of the old control module Figure 22 Figure 23 Control Disassembly Winding Test Motor Connector From Motor Push until Latch Seats Over Ramp Circuit Board 2 N Motor OK when gt 100k ohm 24 oN Figure 24 Drip Loop VN Motor Connector M Back of onnector Orientation ECM 3 pin Control Between 4 and 8 o clock 2 3 2 5 Control Connector 16 pin lt Power Connector 5 pin Drip Loop Manual 2100 5371 Page 49 of 54 TROUBLES
39. ACCA Manual D Winter and Summer Air Conditioning and Equipment Selection Closed Loop Ground Source Heat Pump IGSHPA Systems Installation Guide Grouting Procedures for Ground Source IGSHPA Heat Pump Systems Soil and Rock Classification for IGSHPA the Design of Ground Coupled Heat Pump Systems Ground Source Installation Standards IGSHPA Closed Loop Geothermal Systems IGSHPA Slinky Installation Guide IHER INFORMATI N AND PUBLI ATION FOR MORE INFORMATION CONTACT THESE PUBLISHERS ACCA ANSI ASHRAE NFPA IGSHPA Air Conditioning Contractors of America 1712 New Hampshire Avenue Washington DC 20009 Telephone 202 483 9370 Fax 202 234 4721 American National Standards Institute 11 West Street 13th Floor New York NY 10036 Telephone 212 642 4900 Fax 212 302 1286 American Society of Heating Refrigerating and Air Conditioning Engineers Inc 1791 Tullie Circle N E Atlanta GA 30329 2305 Telephone 404 636 8400 Fax 404 321 5478 National Fire Protection Association Batterymarch Park P O Box 9101 Quincy MA 02269 9901 Telephone 800 344 3555 Fax 617 984 7057 International Ground Source Heat Pump Association 490 Cordell South Stillwater OK 74078 8018 2100 5371 3 of 54 Manual Page Geo Trio GT Series Geothermal Water Source Heat Pump Nomenclature A Coil Section
40. AIN DRAIN 4 MAIN DRAIN 15 8 G el MIS 3119 Manual 2100 5371 Page 80154 FIGURE 1C GTB1 A BLOWER SECTION DIMENSIONS 16 3 8 30 13 1 4 1 LOW VOLTAGE ENTRANCE HIGH VOLTAGE K 0 FOR 22 3 5 8 REMOTE APPLICATIONS ONLY 11 4 24 9 16 21 1813 16 159 OPTIONAL SIDE RETURN OPENING ON BOTH SIDES Y Y k _ DDR E PEU PE Qu d lt 15 2 7 8 _ 1 3 5 16 24 Y MIS 2819 L 11 Manual 2100 5371 Page 9 of 54 JUM ANO 14 WNOLLdO L IOA SONNZH LINH LINN HOV E IDA FAM 2 IOAANO 1 ST cSO9DLD 8 4 OZ 5 S Lv CSVEDLD awa TAON f 9 A d NI YLM 866 O v INO MALY 4 W E T INO MALY 1 E SNOISN3MWIG NOILOAS HOSSdHdlNOD 5 21
41. COIL PRESSURE DROP GTC36S2 GTC48S2 GTC60S2 3 4 5 6 7 8 9 NEN COM N Tom Be Manual 2100 5371 Page 60154 SISc SIA i si 2100 537I 7 of 54 n Nivad NMN SL NOLLO3NNOO AINON S6 Tc NOLLDANNOD NOLLO 1S 1 4 OIAAO THH3AO i W L L ST ST OL D ALWSN3SCNOD NIVCI NMN 4 OTE Z AtiVCINOO3aS wau u U MJ VOU LL i AAM PSSN Jl SUOISUBLUIC IOO VLD SNOISNAWIG NOILO3S T1IOO V VY LAN V L9 VL Manual Page FIGURE 18 GTADP FOSSIL FUEL ADP COIL SECTION DIMENSIONS MWST WERE Ae GTADP 3642 C DIMENSION GTADP 3642 B GTADP 4860 C A 17 5 8 21 1 8 p 25 1 2 27 1 2 7 1 6 3 4 D 2 1 8 2 1 2 E 3 7 8 4 1 4 ip 13 7 8 16 7 8 G 15 5 8 18 5 8 z A 3 4 3 4 21 1 4 um TYP SUCTION CONNECTION IIT p 1 LIQUID CONNECTION OVERFLOW OVERFLOW 4 M
42. Capacity of the unit for a proposed installation should be based on heat loss calculations made in accordance with methods of the Air Conditioning Contractors of America The air duct system should be sized and installed in accordance with Standards of the National Fire Protection Association for the Installation of Air Conditioning and Venting systems of Other than Residence Type NFPA No 90A and residence Type Warm Air Heating and Air Conditioning Systems NFPA No 90B Manual 2100 5371 18 of 54 DUAL FUEL HEATING COOLING Dual fuel is the combination of a fossil fuel furnace normally gas or oil with a heat pump In milder weather the heat pump uses the available outdoor warmth and will transport that heat into your house cheaper than burning gas or oil When it gets very cold around 35 degrees F the heat pump automatically shuts down and the furnace heats the home This combination gives you the maximum savings on both heating and cooling while providing you with ideal indoor comfort Dual fuel systems are becoming increasingly popular in lieu of conventional high efficiency furnaces with air conditioning due to the energy savings and ease of installation Today s new hi tech thermostats eliminate the need for complicated wiring and duel fuel control boards Bard recommends using the Honeywell THX9321R5030 Prestige Thermostat Does not include outdoor sensor Honeywell also offers the Prestige Kit 2 0 which include
43. HOOTIN E ECM MOTOR NT D Part Full Load Full Load Heating Full Load Cooling Load Electric Heat Heating Heating Stage 1 MODE of Continuous Part Load OPERATION Blower Cooling Emergency Heat Mode Thermostat 24 VAC Inuput 1 G 1 2 wa G E wa we Signals wawa I I I I x TI j mem BAGO boa rots Varea Have Sigal sass ponsa l C sss s C ints oa Tp Stet aes Ved Hal Wave Seed x ma I T e lt x T T j x ma I T e T T T j O o Heat Tap Stet Tales Vare at Nave Seras Em 24 VAC Hot R Signal Always Energized SL TL r DC Volts Output Direct Correlation to CFM FIGURE 25 CONTROL CONNECTOR MOTOR HALF 910 11 12 13 14 15 16 POWER CONNECTOR PWB HEADER AMP 1 350945 0 E 1 Super Pin 1 to Pin 2 for Suggested mating connector m Housing AMP 350809 1 Contact AMP 350537 1 B S T WARNING Applying 240VAC lin
44. LVAHYAdNSAd FOUINOD 21907 YALVIHYFANSIG 5 YOLOW YO aN N a MSWO TE 3ounosus3VOdro90c2607 TI Manual 2100 537I 54 of 54 Page
45. METAL TEMPERATURE 2100 537I 34 of 54 208 230 60 1 LINE POWER LIMIT ASNVd LINN 2 OL5fTId 1 G3ddlHS YALWM 5 pm ANI 3unss3ud CIHTIVLSNI AMO LOVA YALL Ino TNAAOHS SV INOLLOGS GATIVLSNI OL JO SIS OL SNIdld NOLLISOd 53900 Yad YIN OH NI GIHTIV ISNI SI SDVYOLLS YILYM NSHAA a WNOLLdO S3COD 1201 OLIAHOJNOO SAW Tv NadO SaAIVA s 1NHS HUM WALSAS NI HZLEVAA CIHLOSNNOO NI YLM CT IOO SATVA aa NIY SINN YLM LNOHLM LON SILON J3unssa3ud WALSAS ATONIS VSI AYNSIA 35 of 54 Manual 2100 5371 Page TOULNOD OLSfYId J423NNOO AHO LOVA WOH CI3LLOHNNOOSKI ClHddlHS TNAWOHS SV INOLLOG CIH T NLSNI LSAN dO xIIS NI OL NOLLISOd WOLLYAA NI dA TIV ISNI SI HONAHOLS H2LEVAA W307 O LIN IOdINOO 1511 ONIEIAIN 1d TN lt AAO LNHS HLMAWALSAS NI HZLVAA ANY CIHLEOHNNOO SANT YA LWW LON
46. NENT LOCATION WATER COIL LOWPRESSURE SWITCHES REVERSING VALVE HIGH PRESSURE SWTCH EXPANSION __ 2 9 LEJ DESUPERHEATER 272 COL Da LOWVOLTAGE FILTER DRIER COMPRESSOR UNIT HGH VOLTAGE PUMP MODULE HIGH VOLTAGE MS 2838 FIGURE 18 CONTROL PANEL TERMNAL DESUPERHEATER B mY CONTROL BOARD e LOGIC CONTROL j 2 A an 2 3 LUNE VOLTAGE el cose e i e COMPRESSOR lt contactor O S 7 Sp GROUND TERMINALS CIRCUIT BREAKERS h PUMP MODULE EE POWER CONNECTION OP CENTER A CONNECTION RELAY d PLUG 4 4 COMPRESSOR CAPACITOR MS 2837 Manual 2100 5371 Page 40 0154 FIGURE 19 HEATING CYCLE PRESS VAPIR sche LOW PRESS VAPOR PRESS Ye
47. RGE CENTRAL RETURN GRILLE S ONE OR MULTIPLE NOTE SINGLE FILTER MAY REQUIRE ATRANSITION FOR ADEQUATE FILTER E SIZING SEE FILTER APPLICATION B INFORMATION a lt AIRFLOW Lo AIR FILTER c AIRFLOW m x E AIRFLOW lt S h gt ARFILTER SIDE INLETS ONEOR BOTH SIDES OR IN COMBINATION WTH BOTTOM INLET AIRFLOW 5 2883 FIGURE 5B COUNTERFLOW QNA RETURN GRILLE S ONE OR MULTIPLE AIRFLOW AIRFLOW AIRFLOW AIRFLOW FILTER SINGLE FILTER CONFIGURATION FILTER CONFIGURATION CONFIGURATION ARFER MF NEEDS E esti tese al 1 n F lo NOTE SINGLE FILTER MAY REQUIRE ATRANSITION FOR ADEQUATE FILTER SIZING SEE FILTER APPLICATION INFORMATION 9 MS 2882 FIGURE 5D HORIZONTAL FRONT DISCHARGE SINGLE FILTER CONFIGURATION JARO Sil NOTE SINGLE FILTER MAY REQUIRE A TRANSITION FOR ADEQUATE FILTER SIZING SEE FILTER APPLICATION INFORMATION a CENTRAL RETURN ONE OR MULTIPLE AIRFLOW AIRFLOW CONFIGURATION AIRFLOW NE DREW Se MS 2884 FILTERS SHOULD ALWAYS BE APPLIED IN A MANNER THAT MAKES THEM EASY TO ACCESS amp CHANGE Manual 2100 5371 Page 21 of 54
48. WATER SOURCE HEAT PUMP MODELS INSTALLATION GTB1 A Blower Section GTA3600UD1AA Coil Section INSTRUCTIONS GTA4860UD1AA Coil Section GTADP 3642 B Coil Section GTADP 3642 C Coil Section GTADP 4860 C Coil Section GTC36S2 ADCX Compressor Section GTC48S2 ADCX Compressor Section GTC60S2 ADCX Compressor Section GTC36S2 ADNX Compressor Section GTC48S2 ADNX Compressor Section GTC60S2 ADNX Compressor Section P Earth Loop Fluid Temperatures 25 110 Ground Water Temperatures 45 75 Manual 2100 5371 BMC Inc Supersedes 2100 537H Bryan Ohio 43506 a ree File Volume Tab 8 Date 10 11 12 Page 1 of 54 CONTENTS Getting Other Informations and Publications 3 General Information Geo Trio GT Series Water Source Nomenclature 4 Blower Conversion amp Line Power Connect 15 Application and Location General DELI 18 Shipping Damage seen 18 EET 18 Dual Fuel Heating Cooling 18 Location 18 Ductwork 2 18 Filters 19 Condensate Drain 19 Piping Access to i ere EG eed 19 Wiring Instructions General 22 Control Circuit Wiring cient 22 Wall Thermostats amp Low Voltage Connections 22 Ground Loop Earth Coupled Water Loop App
49. controls The ductwork and filter sizing must be designed per ASHRAE ACCA Guidelines Step 1 Refer to Table Page 4 for specific unit airflow and static application information Step 2 Refer to Figures 5A 5B 5 and 5D Page 20 for typical installation filter configurations for your specific application Step Refer to Table 6 Filter Sizing Chart Page 19 matching your airflow and filter configuration to determine proper filter sizing CONDENSATE DRAIN Drain lines must be installed according to local plumbing codes It is not recommended that any condensate drain line be connected to a sewer main NOTE This drain line will contain cold water and must be insulated to avoid droplets of water from compressor on the pipe and dripping on finished floors or the ceiling below the unit PIPING ACCESS TO UNIT Water piping to and from the unit enters the unit cabinet on the left side of the unit The connection directly at the unit is a special double o ring fitting with a retainer nut that secures it in place It is the same style fitting used for the flow center connection on ground loop applications NOTE All double o ring fittings require hand tightening only Do not use wrench or pliers as retainer nut can be damaged with excessive force NOTE Apply petroleum jelly to o rings to prevent damage and to aid in insertion Various fittings are available so you may then connect to the unit with various materials an
50. cording to methods given by the Air Conditioning Contractors of America When duct runs through unconditioned spaces it should be insulated with vapor barrier It is recommended that flexible connections be used to connect the ductwork to the unit in order to keep the noise transmission to a minimum WARNING In applying a duct heater refer to duct heater installation instructions for minimum clearance to combustible materials maximum allowed inlet air temperatures and minimum air volume requirements for KW usage CAUTION NEVER OPERATE MORE THAN 10KW STRIP HEAT WITH GEOTHERMAL HEAT PUMP OPERATIONAL USE ADDITIONAL KW STRIP HEAT BEYOND 10KW ONLY IN EMERGENCY HEAT MODE TABLE 5 ELECTRICAL HEAT SPECIFICATIONS Heater Heater 240 Volts Package Package BTUH 8604 080 240 208 60 1 5 0 17 065 3 75 12 799 Maximum Field HACR Circuit Breaker Minimum Circuit BTUH Ampacity 208 Volts All 8604 081 240 208 60 1 408 33 447 7 35 25 086 52 0 6 GTC S2 3604 083 200208007 65520 w m Based upon 75 C copper wire All wiring must conform to National Electric Code Latest Edition all local codes FILTER This unit must NOT be operated without a filter installed on return air side of the system Insufficient airflow due to undersized duct systems inadequate filter size or dirty filters can result in nuisance tripping of the high or low pressure
51. cure front fill plate into unit base and front of blower Step8 Replace GTBI A front service doors after making line and control voltage wiring connections BLOWER LINE POWER CONNECTION Power connections for the GTB1 A can be made two different ways The first is in stacked configurations the blower can be plugged into an electrical connection from the bottom of the compressor GTC S2 Model Unit This will work for either upflow or counterflow applications All electrical sizing has been sized to accommodate this The second is with remote blower meaning separate from the compressor section Supplied in the GTB1 A is an adaptor wire harness On the right hand side of the GTBI A chassis is a 1 2 electrical knockout This harness can be installed through this knockout with the supplied strain relief into a standard electrical junction box field supplied Electrical load sizing is included on the serial plate of the GTB1 A for the required separate branch circuit See Figure 4 Manual 2100 5371 Page 15 of 54 SNOILVHfI9IHNOO anual 2100 5371 16 of 54 M Page EV8c SIN NOLLDANNOD CT Idld DMN OL Toros O INI 1 5 HONOYHL SSANYVH JAM YAWO I8 WOH ONIHSNd 5 JUM 5
52. d methods These methods include 1 barbed fittings straight and 90 1 MPT straight and 90 and 1 1 4 hot fusion fitting straight only see Figure 7 Manual 2100 5371 Page 19 of 54 6 FILTER SIZING CHART Airflow CFM Airflow CFM Filter Nominal Size Surface Area FT2 Filter Type Capability 300 Capability 500 FPM Velocity FPM Velocity 16 X 20 X 1 preces Not Recommended m wake 16 X 20 X 1 1 Pleated Filter 16 X 20 X2 2 Pleated Filter mwxmxr 49 20 X 20 X 4 4 Pleated Filter To self calcuate for additional filter sizes Airflow Nominal Filter Size FT Velocity 1600 CFM 3 47 20 x 25 filter 461 FPM feet per minute velocity Manual 2100 5371 Page 20o0f 54 Airflow CFM Capability 625 FPM Velocity Not Recommended Not Recommended Not Recommended AIR FILTER APPLICATIONS FIGURE 5A UPFLOW CENTRAL RETURN GRILLE S ONE OR MULTIPLE 5 cu lt LL x z o o lac AIRFLOW AIRFLOW I e lc ac lt SIDE INLET S ONE OR 3 BOTHSIDES OR INCOMBINATION WITH BOTTOM INLET AIR FILTER NOTE SINGLE FILTER MAY REQUIRE a ATRANSITION FOR ADEQUATE FILTER SIZING SEE FILTER APPLICATION lt INFORMATION MS 2881 FIGURE 5C HORIZONTAL LEFT DISCHA
53. e input with PIN 1 to PIN 2 jumper in place will permanently damage unit POWER CONNECTOR MOTOR HALF 2100 5371 Page 50 0154 GROUND SOURCE HEAT PUMP PERFORMANCE REPORT This performance check report should be filled out by installer and retained with unit DATE 1 UNIT Mfgr Model No THERMOSTAT Mfgr Model No 2 Person Reporting TAKEN BY S N P N 3 Company Reporting Installed By Date Installed pham User s Owner s Name Address 6 Unit Location WATER SYSTEM INFORMATION T Open Loop System Water Well Closed Loop System A If Open Loop where is water discharged 8 The following questions are for Closed Loop systems only A Closed loop system designed by B Type of antifreeze used Solution C System type Series Parallel D Pipe material Nominal Size E Pipe Installed 1 Horizontal No pipes in trench 2 Vertical Total length of pipe ft Depth bottom pipe ft Total length of bore hole ft Manual 2100 5371 Page 51 of 54 THE FOLLOWING INFORMATION IS NEEDED TO CHECK PERFORMANCE OF UNIT FLUID SIDE DATA Cooling Heating 9 Entering fluid temperature F 10 Leaving fluid temperature F 11 Entering fluid pressure PSIG 12 Leaving fluid pressure PSIG 13 Pressure drop through coil PSIG 14 Gallon
54. g Water Coil Figure 12 The acid solution can be introduced into the heat pump coil through the hose bib A Be sure the isolation valves are closed to prevent contamination of the rest of the system by the coil The acid should be pumped from a bucket into the hose bib and returned to the bucket through the other hose bib B Follow the manufacturer s directions for the product used as to how long the solution is to be circulated but it is usually circulated for a period of several hours Manual 2100 5371 Page 300f54 PUMP LAKE AND POND INSTALLATIONS Lakes and ponds can provide a low cost source of water for heating and cooling with a ground water heat pump Direct usage of the water without some filtration is not recommended as algae and turbid water can foul the water to refrigerant heat exchanger Instead there have been very good results using a dry well dug next to the water line or edge Normal procedure in installing a dry well is to backhoe a 15 to 20 foot hole adjacent to the body of water set backhoe as close to the water s edge as possible Once excavated a perforated plastic casing should be installed with gravel backfill placed around the casing The gravel bed should provide adequate filtration of the water to allow good performance of the ground water heat pump The following is a list of recommendations to follow when installing this type of system A Alake or pond should be at least 1 acre 40 000 square feet
55. gent reset feature after a safety control is activated The controller locks out the unit for 5 minutes at the end of this period the controller checks to verify that all faults have been cleared If faults have been cleared the controller restarts the unit If a second fault occurs the controller will lock out the unit until the unit is manually reset by breaking Y signal from thermostat The last fault will be kept in memory after a full lockout this is only cleared by cycling the power ALARM OUTPUT The L terminal has 24 volts applied when a hard lockout occurs This can be used to drive a fault light or a low voltage relay PRESSURE SERVICE PORTS High and low pressure service ports are installed on all units so that the system operating pressures can be observed Pressure tables can be found later in the manual covering all models It is imperative to match the correct pressure table to the unit by model number SYSTEM START UP Step 1 Close disconnect switch es and set the thermostat to cool and the temperature to the highest setting Step 2 Check for proper airflow across the indoor coil Step 3 Connect the service gauges and allow the unit to run for at least 10 minutes or until pressures are stable Check pressures to the system pressure table attached to the unit service panel Step 4 out Ground Source Heat Pump Performance Report Manual 2100 5371 Page 39 of 54 FIGURE 17 COMPO
56. h a slope of 2 inches per 10 feet of run to provide complete drainage of the line when the ground water heat pump is not operating This gradient should also help prevent freezing of the discharge where the pipe terminates above the frost line K Locate the discharge high enough above high water level so the water will not back up and freeze inside the drain pipe L Where the local conditions prevent the use of a gravity drainage system to a lake or pond you can instead run standard plastic piping out into the pond below the frost and low water level WARNING Thin ice may result in the vicinity of the discharge line For complete information on water well systems and lake and pond applications refer to Manual 2100 078 available from your distributor FIGURE 13 LAKE OR POND INSTALLATION WELL CAP y x ES Y ELECTRICAL LINE PITLESS ADAPTER TO PRESSURE TANK by 1 X LEK 55 WATER Shes lt l i i Aa OOOO 97 2 Z CA ZZ Z B YS to 20 2 Z lt Z kc2 ZZ GG 3 X ZZ Z KG Z K DEEP 2 2 Z 0222227 5 5 X lt Z SSSI IV RI A F 2 2222 2 X SO
57. ilter Applications Figure 5B Counterflow Air Filter Applications Figure 5C Horiz Left Discharge Air Filter Figure 5D Horiz Front Discharge App 21 Figure6 Thermostat Wiring Figure 7 Circulation System Design Figure8 Temperature amp Pressure Measurement Figure9 Perf Model DORFC 1 Flow Ctr 26 Figure 10 Perf Model DORFC 2 Flow Ctr 26 Figure 11 Water Connection Components 28 Figure 12 Cleaning Water Figure 13 Lake or Pond Installation Figure 14 Wiring Diagram eene Manual 2100 5371 Page 2 of 54 Sequence of Operation E 38 Part Full Load enne 38 Part Full Load tees 38 Supplementary Electric Heat 00 Geothermal Logic Controls 38 High Low Pressure Switch 39 Freeze Stat 15239 Condensate Overflow 39 Under Over Voltage 39 Intelligent e nes 39 Alarm Output 209 Pressure Service Ports we 99 System Start chro perdis 39 Ref
58. immediately ahead of the valve no water will flow Strainer 8 installed upstream of water coil inlet to collect foreign material which would clog the flow valve orifice The figure shows the use of shutoff valves 4 and 5 on the in and out water lines to permit isolation of the unit from the plumbing system should future service work require this Globe valves should not be used as shutoff valves because of the excessive pressure drop inherent in the valve design Instead use gate or ball valves as shutoffs so as to minimize pressure drop Hose bib 6 and 7 and tees should be included to permit acid cleaning the refrigerant to water coil should such cleaning be required See WATER CORROSION Hose bib 1 provides access to the system to check water flow through the constant flow valve to insure adequate water flow through the unit A water meter is used to check the water flow rate WELL PUMP SIZING Strictly speaking sizing the well pump is the responsibility of the well drilling contractor It is important however that the HVAC contractor be familiar with the factors that determine what size pump will be required Rule of thumb estimates will invariably lead to under or oversized well pumps Undersizing the pump will result in inadequate water to the whole plumbing system but with especially bad results to the heat pump NO HEAT NO COOL calls will result Oversized pumps will short cycle and could cause premature
59. ing Operation Will occur automatically after five minutes of Part Load Cooling Operation Will occur automatically with control signal input As per ASHRAE Guidelines of 500 FPM Velocities NOTE values be changed 10 via the adjustment dip switches on the tap select control inclusive in the GTB1 A Blower Section see instructions later in this manual or on wiring diagram in blower section TABLE 2 FLOW RATES FOR VARIOUS FLUIDS MODELS GTC36S2 GTC48S2 GTC60S2 APPLICATION owe T r T TABLE 3 SPECIFICATIONS MODEL GTC36S2 GTC48S2 GTC60S2 Electrical Rating 60HZ 1PH 230 208 60 1 Operating Voltage Range 253 197 VAC Minimum Circuit Ampacity 24 5 33 1 39 7 Field Wire Size 10 6 4 Ground Wire Size 10 10 10 Delay Fuse or Circuit Breaker Max 35 50 60 COMPRESSOR Volts 230 208 60 1 Rated Load Amps 230 208 10 6 11 9 15 3 17 0 20 2 22 7 Branch Circuit Selection Current 15 3 21 2 25 6 Locked Rotor Amps 230 208 82 82 104 104 153 153 BLOWER MOTOR Horsepower ECM Motor 3 4 Variable Speed Volts 230 208 60 1 Motor Amps Stage 2 Rated CFM 3 4 4 3 4 4 FLOW CENTER Based on DORFC 2 Volts 230 208 60 1 Amps 2 14 2 14 2 14 DESUPERHEATER PUMP MOTOR Volts 230 208 60 1 Amps 0 15 0 15 0 15 75 C copper wire HACR type circuit breaker Manual 2100 5371 Page 5 of 54 TABLE 4 WATER
60. ing panel or filter reduce puffing Reduce restriction Reduce max airflow Check low voltage Thermostat wires and connections Verify fan is not in delay mode wait until delay complete R missing not connected at motor Perform motor control replacement check R missing not connected at motor s fan in delay mode wait until delay time complete Perform motor control replacement check Current leakage from controls into G Y or W Check for Triac switched thermostat or solid state relay Determine if it s air noise cabinet duct or motor noise interview customer if necessary High static creating high blower speed Is airflow set properly Does removing filter cause blower to slow down Check filter Use low pressure drop filter Check correct duct restrictions Cause Procedure Check for loose blower housing panels etc High static creating high blower speed Check for air whistling through seams in ducts cabinets or panels Symptom Noisy blower or cabinet Check for cabinet duct deformation Hunts or puffs at high CFM speed Does removing panel or filter reduce puffing Reduce restriction Reduce max airflow Evidence of Moisture e Motor failure or malfunction has occurred and moisture is present Replace motor and Perform Moisture Check Evidence of moisture Perform Moisture Check present inside
61. keep pressure and heat losses to a minimum ELECTRICAL CONNECTION The Desuperheater The desuperheater logic control with the remote thermal sensors are built already hard wired into the unit control panel 208 230 60 1 power for the desuperheater pump is supplied with the same power as the compressor The 24 volt signals needed are also tied in with the compressor call signals WARNING Never alter or plug factory installed pressure relief valve on water heater or auxiliary tank Manual 2100 5371 Page 320f54 INSTALLATION PROCEDURE GENERAL Before beginning the installation turn off all power supplies to the water heater and unit and shut off the main water supply line TWO TANK In order to realize the maximum energy savings from the heat recovery system it is recommended that a second water storage tank be installed in addition to the main hot water heater Fossil fuel fired water heaters must be a two tank installation Tanks specifically intended for hot water storage are available from water heater manufacturers solar hot water storage tanks A well insulated electric water heater without the electric heating elements will also make a suitable storage tank The size of storage tank should be as large as space and economy permit but in no event should it be less than one half of the daily water requirements for the occupants As a guide in estimating the daily family water requirements The Department
62. lications NOLO 4 24 Circulation System Design 24 Start Up Procedure for Ground Loop System 25 Ground Water Well System Applications N te edited S nei iei Water Connections Well PUMP SIZING J B ree Start Up Procedure for Ground Water System 29 Wat r p Remedies of Water Problems Lake and or Pond Installations Desuperheater ete 32 Location Electrical Connection Installation Procedure General Oper of Heat Recovery Unit Start Up amp 33 Maintenance amp Control Board Seq of Operation 33 amp 37 Figures Figure 14 GTA UD1AA Dimensions Figure 1B GTADP Fossil Fuel ADP Coil Dimensions Figure 16 GTB1 A Dimensions Figure 10 GTC S2 D Dimensions Figure 1E Assembled Upflow Counterflow App Figure Horizontal App Dimensions Figure 2A Upflow amp Counterflow Ducting Config Figure 2B Horiz amp Counterflow Ducting Config Figure 3 Blower Configuration Figure 4 Blower Power Connections Figure Upflow Air F
63. low for obstructions A Move thermostat fan switch to ON Blower runs B Be sure all registers and grilles are open C Move thermostat fan switch to AUTO Blowing should stop Flush fill and pressurize the closed loop system per IGSHPA guidelines Fully open the manual inlet and outlet valves Start the loop pump module circulator s and check for proper operation If circulator s are not operating turn off power and diagnose the problem Check fluid flow using a direct reading flow meter or a single water pressure gauge measure the pressure drop at the pressure temperature plugs across the water coil Compare the measurement with flow versus pressure drop table to determine the actual flow rate If the flow rate is too low recheck the selection of the loop pump module model for sufficient capacity If the module selection is correct there is probably trapped air or a restriction in the piping circuit 10 11 Start the unit in cooling mode by moving the thermostat switch to cool Fan should be set for AUTO Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated water flow and entering water temperatures If the refrigerant pressures do not match check for airflow problem then refrigeration system problem Switch the unit to the heating mode by moving the thermostat switch to heat Fan should be set for AUTO Check the refrigerant system pressures
64. n the Over Temperature Limit Switch opens see Wiring Diagram C Upon acknowledgment of Y signal and following two minutes the control board will energize the pump relay F The 3 amp fuse is put in series with the R connection to the board Whenever the fuse is blown the control will lose power and consequently the relay will disengage D After 1 minutes based on temperature difference between Outlet amp Inlet sensors and the presence of Y signal the following will take place Figure 16 THERMISTOR TEMPERATURE VS RESISTANCE R OF TEMPERATURE SENSOR Manual 2100 5371 Page 37 of 54 SEQUENCE OF OPERATION BLOWER Blower functions are all controlled through 24 VAC input signals from the control thermostat and 208 230 VAC being supplied to the motor continuously The installer must be sure to configure the tap select control board located in blower compartment based upon the specific model application By default the tap select control located in the blower compartment is shipped from the factory to operate at the airflow ranges for the GTC60S2 model Please see Wiring Diagram Page 53 which details the required dip switch changes required between models NOTE 1 On a call from only from the thermostat call for manual fan the blower will operate at a significantly reduced airflow rate to allow for air circulation and filtration but at reduced power consumption and sound levels NOTE 2
65. nnected to this board is a temperature overlimit device which shuts down the desuperheater once inlet water has exceeded 125 so the water cannot create a scald condition There are also two 2 thermistor sensors connected to the control board These thermistors are measuring and controlling to ensure there is a positive heat differential across the water being circulated When operating in Part Load Condition there are certain conditions Ground Loop Temperatures versus Hot Water Temperatures that potential exists where heat could transfer from the hot water into the refrigeration system instead of the refrigeration system into the hot water Through the control board logic these thermistors ensure there is at least 2 positive differential between entering leaving water temperatures and will shut down the pump accordingly START UP AND CHECK OUT Be sure all shut off valves are open and all power supplies are on Open a hot water faucet to permit any air to bleed from the plumbing NOTE The inherent design of this pump for maximum efficiency means this pump is not self priming It is imperative to check that the air has been adequately bled from the system There is a bleed port built into the pump module that can be utilized after the system water has been fully restored The bleed port is located directly above the pump in the GTC compressor unit Turn ON the air conditioning system and verify the circulating pump will operate
66. oblems and then refrigeration system problems NOTE If a charge problem is determined high or low A Check for possible refrigerant loss B Discharge all remaining refrigerant from unit C Evacuate unit down to 29 inches of vacuum D Recharge the unit with refrigerant by weight This is the only way to insure proper charge WATER CORROSION Two concerns will immediately come to light when considering a water source heat pump whether for ground water or for a ground loop application Will there be enough water And how will the water quality affect the system Water quantity is an important consideration and one which is easily determined The well driller must perform a pump down test on the well according to methods described by the National Well Water Association This test if performed correctly will provide information on the rate of flow and on the capacity of the well It is important to consider the overall capacity of the well when thinking about a water source heat pump because the heat pump may be required to run for extended periods of time The second concern about water quality is equally important Generally speaking if the water is not offensive for drinking purposes it should pose no problem for the heat pump The well driller or local water softening company can perform tests which will determine the chemical properties of the well water Water quality problems will show up in the heat pump in one o
67. ol will then go through 5 minute delay on break random start sequence If no fault found on next run cycle compressor will continue operation If fault reoccurs hard lockout occurs and fault signal is sent to L terminal NOTE Jumper wire is factory installed CONDENSATE OVERFLOW Terminals CO amp CO This input operates when the water level in the condensation pan rises and completes a signal across the terminals of the terminal block located in the indoor coil drain pan yellow fault light illuminates If fault clears the logic control will go through 5 minute delay random start If fault reoccurs or didn t clear the first time after 30 seconds the control will go into hard lockout and will energize the L output signal EQUENCE OF OPERATION UNDER amp OVER VOLTAGE PROTECTION When an under or over voltage condition exists the controller locks out the unit When condition clears the controller automatically releases the unit to normal operation and the compressor restarts after the random start and anti short cycle timings are met The under amp over voltage protection starts at plus or minus 20 from nominal voltage and returns to operation at plus or minus 10 from nominal voltage All four 4 LED fault lights will flash when an under or over voltage condition occurs The over voltage protection can be disabled by removing the O V jumper INTELLIGENT RESET The Geothermal Logic Control has an intelli
68. owever is separated from the pressure of the household supply and relies on a small low wattage pump to circulate the water and antifreeze solution through the earth coupling heat pump and equipment room components The small circulator keeps the operating costs of the system to a minimum However the performance of the circulator MUST be closely matched with the pressure of head loss of the entire system in order to provide the required flow through the heat pump Insufficient flow through the heat exchanger is one of the most common causes of system failure Proper system piping design and circulator selection will eliminate this problem FIGURE 7 CIRCULATION SYSTEM DESIGN PIPE FROM t GOUND LOOP y PUMP MODULE STRAIGHT BARBED BRASS ADAPTERS OPTIONAL VISUAL FLOW METER NOTE IF USED SUPPORT WITH A FIELD FABRICATED WALL BRACKET HOSE CLAMPS 1 FLEXIBLE HOSE NOTE APPLY PETROLEUM J ELLY TO O RINGS TO PREVENT DAMAGE AND AID IN INSERTION Manual 2100 5371 Page 24 54 PIPE TO GROUND LOOP WATER OUT WATER IN MIS 2827 A START UP PROCEDURE FOR GROUND LOOP SYSTEM 1 2 Be sure main power to unit is OFF at disconnect Set thermostat system switch to OFF fan switch to AUTO Move main power disconnect to ON Except as required for safety while servicing DO NOT OPEN THE UNIT DISCONNECT SWITCH Check system airf
69. ply 18 to 28 volts ac to the solenoid molded plug leads and listen for a click as the solenoid pulls in Remove power and listen for another click as the solenoid returns to its original position 3 If clicks can t be heard shut off power and remove the control circuit molded plug from the compressor and measure the solenoid coil resistance The resistance should be 32 to 60 ohms depending on compressor temperature 4 Next check the molded plug Voltage check Apply control voltage to the plug wires 18 to 28 volts ac The measured de voltage at the female connectors in the plug should be around 15 to 27 Resistance check Measure the resistance from the end of one molded plug lead to either of the two female connectors in the plug One of the connectors should read close to zero ohms while the other should read infinity Repeat with other wire The same female connector as before should read zero while the other connector again reads infinity Reverse polarity on the ohmmeter leads and repeat The female connector that read infinity previously should now read close to zero ohms Replace plug if either of these test methods does not show the desired results Manual 2100 5371 Page 47 of 54 TROUBLESHOOTING GE 2 3 MOTORS ___ CAUTION Disconnect power from unit before removing or replacing connectors or servicing motor To avoid electric shock from the motor s capacitors disconnect power and wait at least
70. pump motor or switch failures The well pump must be capable of supplying enough water and at an adequate pressure to meet competing demands of water fixtures The well pump must be sized in such a way that three requirements are met 1 Adequate flow rate in GPM 2 Adequate pressure at the fixture 3 Able to meet the above from the depth of the well feet of lift Manual 2100 5371 Page 27 of 54 The pressure requirements put on the pump are directly the piping is not undersized which would create too much affected by the diameter of pipe being used as well as pressure due to friction loss High pressure losses due to by the water flow rate through the pipe The worksheet undersized pipe will reduce efficiency and require larger included in Manual 2100 078 should guarantee that the pumps and could also create water noise problems well pump has enough capacity It should also ensure that FIGURE 11 WATER CONNECTION COMPONENTS NOTE Shown with Optional Top Kit for Remote Condenser Applications MIS 2825 See descriptions for these reference numbers on Page 27 Manual 2100 5371 Page 280o0f 54 SYSTEM START UP PROCEDURE FOR GROUND WATER APPLICATIONS 1 Be sure main power to the unit is OFF at disconnect 2 Set thermostat system switch to OFF fan switch to AUTO 3 Move main power disconnect to ON Except as required for safety while servicing DO NOT OPEN THE UNIT DISCONNECT SWITCH
71. r more of the following ways 1 Decrease in water flow through the unit 2 Decreased heat transfer of the water coil entering to leaving water temperature difference is less There are four main water quality problems associated with ground water These are 1 Biological Growth This is the growth of microscopic organisms in the water and will show up as a slimy deposit throughout the water system Shock treatment of the well is usually required and this is best left up to the well driller The treatment consists of injecting chlorine into the well casing and flushing the system until all growth is removed 2 Suspended Particles in the Water Filtering will usually remove most suspended particles fine sand small gravel from the water The problem with suspended particles in the water is that it will erode metal parts pumps heat transfer coils etc So long as the filter is cleaned and periodically maintained suspended particles should pose no serious problem Consult with your well driller 3 Corrosion of Metal Corrosion of metal parts results from either highly corrosive water acid water generally not the case with ground water or galvanic reaction between dissimilar metals in the presence of water By using plastic plumbing or dielectric unions galvanic reaction is eliminated The use of corrosion resistant materials such as the Cupronickel coil through the water system will reduce corrosion problems significantly
72. rant fittings onto the pre charged condenser section REFRIGERANT CHARGE QUANTITY Line Set and Evaporator Coil GTADP Add On Coils The refrigerant charge shown on the GTC condenser section is based on being matched with a GTA coil section and not the ADP A coil Charge adjustments are required for proper system operation when using an ADP coil Use the following formulas to determine the amount of charge required e GTC36 Line Set Charge Line Set Length FT X 1 4 oz R 410A FT 3 0 oz GTC48 Line Set Charge Line Set Length FT X 1 4 oz R 410A FT 9 0 oz e GTC60 Line Set Charge Line Set Length FT X 1 4 oz R 410A FT 20 0 oz Example A GTC48 condenser section is being installed with a GTADP 4860 C evaporator coil and a 25 foot line set GTC48 Line Set Charge Line Set Length 25 FT X 1 4 oz R 410A FT 9 0 oz GTC48 Line Set Charge 26 0 oz REFRI ERANT CHARGE DO NOT CONNECT THE LINE SET TO THE CONDENSER SECTION Pre charge the line set and evaporator coil with the amount of R 410A calculated earlier REFRIGERANT FITTING ATTACHMENT After pre charging line set amp coil GTADP Add On Coils 1 Coat all mating surfaces including o rings with R 410A refrigerant oil Polyol Ester 2 Attach female fittings to condensing unit portion by hand threading initially Be careful not to cross thread assembly 3 Final torque should be achieved Use the appropriate size wrench in conjunction wi
73. rigerant Charge Line Set Installation GTA Coil Sections Charge Adjustment Refrigerant Fitting Attachment Checking Charge Quantity General GTADP Coi Sections Line Set Installation GTADP Coil Sections General Topping Off System Safety Practices Service Service HiIMS oo a cose uu UR MR SE RO Unbrazing System Components Compressor Troubleshooting GE ECM 2 3 Motors Troubleshooting Table Power Connector Table Ground Source Heat Pump Performance 51 52 Wiring Diagrams 53 54 Figure 15A Desuperheater Single Tank System 35 Figure 158 Desuperheater Dual Tank System 36 Figure 16 Th errmilstOr eere 37 Figure 17 Component Location 40 Figure 18 Control Panel 40 Figure 19 Refrigerant Flow Diagrams 2 41 Figure 20 Spacer 43 Figure 21 Pressure Tables 45 Figure 22 Control
74. s per minute through the water coil GPM 15 Liquid or discharge line pressure PSIG 16 Suction line pressure PSIG 17 Voltage at compressor unit running V 18 Amperage draw at line side of contactor A 19 Amperage at compressor common terminal A 20 Suction line temperature 6 from compressor F 21 Superheat at compressor F 22 Liquid line temperature at metering device F 23 Coil subcooling F INDOOR SIDE DATA Cooling Heating 24 Dry bulb temperature at air entering indoor coil F 25 Wet bulb temperature of air entering indoor coil F 26 Dry bulb temperature of air leaving indoor coil F 2T Wet bulb temperature of air leaving indoor coil F 28 Supply air static pressure packaged unit WC 29 Return air static pressure packaged unit WC 30 Other information about installation When performing a heating test insure that 2 stage heat is not activated Items that are optional Manual 2100 5371 Page 52 0 54 208 230 60 1
75. s the THX9321R5030 Prestige Thermostat REM5000R1001 Portable Comfort Control and C7089R1013 Wireless Outdoor Sensor LOCATION The unit may be installed in a basement closet or utility room provided adequate service access is ensured These units are not approved for outdoor installation and therefore must be installed inside the structure being conditioned Do not locate in areas subject to freezing in the winter or subject to sweating in the summer Before setting the unit consider ease of piping drain and electrical connections for the unit Also for units which will be used with a desuperheater unit consider the proximity of the unit to the water heater or storage tank Place the unit on a solid base preferably concrete to minimize undesirable noise and vibration DO NOT elevate the base pan on rubber or cork vibration eliminator pads as this will permit the unit base to act like a drum transmitting objectionable noise DUCTWORK If the unit is to be installed in a closet or utility room which does not have a floor drain a secondary drain pan under the entire unit is highly recommended DO NOT install the unit in such a way that a direct path exists between any return grille and the unit Rather insure that the air entering the return grille will make at least one turn before entering the unit or coil This will reduce possible objectionable compressor and air noise from entering the occupied space Design the ductwork ac
76. should already be in Part Load Heating operation prior to Full Load Heating being energized Additionally what happens the thermostat completes a circuit from to Y2 This sends a signal to both the staging solenoid on the side of the compressor and sends a signal to the Blower Tap Select Control in the blower compartment to drive the blower to the proper SUPPLEMENTARY ELECTRIC HEAT The system should already be in FULL LOAD HEATING operation above The thermostat completes a circuit from R to W2 which energizes the first bank of electric heat GEOTHERMAL LOGIC CONTROL If the controller operates in normal mode the green Status LED blinks This indicates that 24 volt power is applied to the board and the controller is running in normal operation On initial power up and call for compressor operation a 5 minute delay a random start delay of 0 to 60 second is applied After the random delay the compressor relay is energized Terminals CC amp CCG When the input opens the compressor de energizes Water Solenoid When Y signal is sent to Geothermal Logic Control the water solenoid output terminal will energize 10 seconds prior to CC output that starts compressor Anti Short Cycle Timer After compressor shutdown or power disruption a 5 minute timer is applied and prevents the compressor from operating HIGH PRESSURE SWITCH TERMINALS amp HP2 Circuit
77. ssor contactor is energized FULL LOAD COOLING The system should already be in Part Load Cooling operation prior to Full Load Cooling being energized Additionally what happens the thermostat completes a circuit from to Y2 This sends a signal to both the staging solenoid on the side of the compressor and sends a signal to the Blower Tap Select Control in the blower compartment to drive the blower to the proper CFM Manual 2100 5371 Page 380154 PART LOAD HEATING No Electric Heat When thermostat system is placed in HEAT the reversing valve solenoid is no longer energized On a call for part load heating the thermostat completes a call from R to Y1 sending the signal to both the Tap Select Control located in the blower compartment and to the Geothermal Logic Control located in the compressor section The tap select control uses the input signal versus the motor program and the dip switch settings to determine the proper air volume rate to operate The Geothermal Logic Control verifies that the High Pressure Switch the Low Pressure Switch and the Freeze Stat controls are all in the closed position It then energizes the terminal output to start the flow center Ground Loop Applications or energizes the water solenoid Ground Water Water Loop Applications Following 10 seconds of the terminal energization the compressor contactor is energized FULL LOAD HEATING The system
78. t supersede the coil manufacturer s installation instructions or local codes in any way Read the manufacturer s installation manual and all WARNING statements prior to installing the evaporator coil The following is needed in addition to the evaporator coil 1 Line Set Stub Kit with Single Pair Ends Bard Part No GTLS SK2 1 2 Line Set consisting of 7 8 and 3 8 soft rolled copper with insulation 3 Coil Spacer Oil Furnaces Only Coils are shipped with a 10 PSIG dry air holding charge Puncture rubber plug on suction line to release charge before removing plugs The absence of pressure does not verify a leak Check the coil for leaks prior to installing if a leak is suspected Position the coil box directly on top of a gas furnace and secure using sheet metal screws The drain pans are made of a polymer that can withstand temperatures up to 450 F If installed on an oil or drum type heat exchanger a coil spacer is recommended to maintain a 6 inch clearance to protect the pan and to provide optimum air flow over the coil Coil should be level or pitched slightly toward the drain connections See Figure 20 LINE SET INSTALLATION GTADP Add On Coils Braze up one end of the line set to the GTLS SK2 1 stub kit and the other end to the evaporator coil Ports are provided in the GTLS SK2 1 kit Pull a vacuum 100 microns on the line set and coil Pre charge the line set and coil with refrigerant before screwing the refrige
79. t the blower motor plugs are not plugged in or unplugged while the power is on Failure to remove power prior to unplugging or plugging in the motor could result in motor failure WARNING Both the high and low side of the scroll compressor must be checked with manifold gauges before unbrazing system components Failure to do so could cause pressurized refrigerant and oil mixture to ignite if it escapes and contacts the brazing flame causing property damage bodily harm or death CAUTION Do not plug in or unplug blower motor connectors while the power is on Failure to do so may result in motor failure COMPRESSOR SOLENOID See Sequence of Operation on Pages 37 amp 38 for function A nominal 24 volt direct current coil activates the internal compressor solenoid The input control circuit voltage must be 18 to 28 volts ac The coil power requirement is 20 VA The external electrical connection is made with a molded plug assembly This plug contains a full wave rectifier to supply direct current to the unloader coil Compressor Solenoid Test Procedure If it is suspected that the unloader is not working the following methods may be used to verify operation 1 Operate the system and measure compressor amperage Cycle the compressor solenoid on and off at 10 second intervals The compressor amperage should go up or down at least 25 percent 2 If step one does not give the expected results shut unit off Ap
80. th a second backing wrench to ensure that the fittings do not spin or twist on the copper refrigerant lines Use the following torque rates 3 8 Line Set 22 25 ft Ibs 30 35 Nm 7 8 Line Set 44 47 ft lbs 60 65 Nm FIGURE 20 COIL SPACER COIL SPACER ATTACH WITH IF REQUIRED SCREWS TO FLANGE MIS 3127 Manual 2100 5371 Page 43 of 54 REFRIGERANT CHARGE These units require R 410A refrigerant and Polyol Ester GENERAL 1 Use separate service equipment to avoid cross contamination of oil and refrigerants 2 Use recovery equipment rated for R 410A refrigerant 3 Use manifold gauges rated for R 410A 800 psi 250 psi low 4 R 410A is a binary blend of HFC 32 and HFC 125 5 R 410A is nearly azeotropic similar to R 22 and R 12 Although nearly azeotropic charge with liquid refrigerant 6 410 operates at 40 70 higher pressure than R 22 and systems designed for R 22 cannot withstand this higher pressure 7 R 410A has an ozone depletion potential of zero but must be reclaimed due to its global warming potential 8 R 410A compressors use Polyol Ester Polyol Ester oil is hygroscopic it will rapidly absorb moisture and strongly hold this moisture in the oil 10 A liquid line dryer must be used even a deep vacuum will not separate moisture from the oil 11 Limit atmospheric exposure to 15 minutes 12 If compressor removal is necessary always plug compressor immediately after
81. tings should be threaded simultaneously Again be careful not to cross thread either assembly 3 Final torque should be achieved Use the appropriate size wrench in conjunction with a second backing wrench to ensure that fittings do not spin or twist on the copper refrigerant lines Use the following torque rates 3 8 Lineset 22 25 ft Ibs 30 35 Nm 7 8 Lineset 44 47 ft lbs 60 65 Nm CHECKING REFRIGERANT CHARGE QUANTITY COIL SECTIONS The correct R 410A charge is shown on the unit rating plate including adders for the various line set lengths Reference Figure 21 to validate proper system operation However it is recommended that if incorrect charge is suspected the system refrigerant be reclaimed evacuated and charged to nameplate charge quantity and type including necessary charge adjustment for the installed line set length The nameplate charge quantity is optimized for thermal performance and efficiency throughout all modes of operation TABLE 9 PRE CHARGED LINE SET REFRIGERANT QUANTITY R 410A CHARGE QUANTITY MODEL DESCRIPTION Ounces 3 8 Line 7 8 Line GTLS 15 1 15 Line Set GTLS 35 1 35 Line Set GTLS 50 1 50 Line Set Manual 2100 5371 Page 42 0154 03 _ 15 35 GENERAL GTADP COIL SECTIONS GENERAL GTADP Add On Coils These instructions are intended as a general guide and do no
82. trols designed for ECM that regulate CFM Thermostat in bad location Replacing ECM Control Module To replace the control module for the GE variable speed indoor blower motor you need to take the following steps 1 You MUST have the correct replacement module The controls are factory programmed for specific operating modes Even though they look alike different modules may have completely different functionality USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS 2 Begin by removing AC power from the unit being serviced DO NOT WORK ON THE MOTOR WITH AC POWER APPLIED To avoid electric shock from the motor s capacitors disconnect power and wait at least 5 minutes before opening motor 3 It is not necessary to remove the motor from the blower assembly nor the blower assembly from the unit Unplug the two cable connectors to the motor control assembly There are latches on each connector DO NOT PULL ON THE WIRES The plugs remove easily when properly released 4 Locate the screws that retain to the motor control bracket to the sheet metal of the unit and remove them Remove two 2 nuts that retain the control to the bracket and then remove two 2 nuts that retain sheet metal motor control end plate Refer to Figure 22 5 Disconnect the three 3 wires interior of the motor control by using your thumb and forefinger squeezing the latch tab and the opposite side of the connector plug
83. will be proved as closed prior to energizing or terminals If pressure switch opens compressor will go into soft lockout mode and compressor operation will be terminated green fault light illuminated Logic control will then go through 5 minute delay on break random start sequence If no fault found on next run cycle compressor will continue operation If fault reoccurs hard lockout occurs and fault signal is sent to L terminal LOW PRESSURE SWITCH TERMINALS LP1 amp LP2 Circuit will be proved as closed prior to energizing or terminals The conditions of the LP terminals will then be ignored for the first 90 seconds after a demand for compressor operation Following this 90 second period if pressure switch opens compressor will go into soft lockout mode and compressor operation will be terminated orange fault light illuminated The control board will then go through a 5 minute delay on break random start sequence If no fault found on next run cycle compressor will continue operation If fault reoccurs hard lockout occurs and fault signal is sent to L terminal FREEZE STAT Optional Field Add On Option TERMINALS FS amp FS2 Circuit will be proved as closed prior to energizing or terminals If freezestat switch opens compressor will go into soft lockout mode and compressor operation will be terminated red fault light illuminated Logic contr

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