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1. _ Ambient Sensor Plastic Clip Star Bushing N Figure 10 Ambient Sensor Mounting Electric Heat Package optional This heat pump is shipped without an auxiliary electric heat kit installed If electric heat is desired an accessory Heater Kit must be field installed See Specifications Sheet for available kits and their application Select the correct size heat package for the installation Follow installation instructions provided with each heater kit Installation is most easily accomplished before making duct or electrical connections Refer to Table 2 page 10 for blower speeds 772 631 1243 11 SYSTEM OPERATION Pre Start Checklist The following check list should be observed prior to starting the unit Y Isthe unit level Unit should be level or slightly slanted toward the drain for proper condensate drainage Y Is the unit installed with the proper clearances as listed in Figure 2 page 5 15 the wiring correct according to the wiring diagram and electrical codes Y Areallthe wiring connections tight Check the condenser fan to make sure it turns freely 15 the overcurrent protection properly sized Y Isthe thermostatwired correctly Is itinstalled in a proper location Start Up Procedure The control circuit consists of an anti short cycle timer that will not let the compressor re start before three 3 minutes h2. 3 Cooling 3 Heating 3 Emergency Heat nn 3 iier 3 System Shutdown 4 Warranty Information 4 INSTALLER INFORMATION 4 General 4 Pre Installation Check Inspecting Equipment 4 HEAT PUMP INSTALLATION 5 Locating the Heat pump 5 Unpacking the Unit e 5 Minimum Clearances 5 Service Access Clearance 5 Clearances to Combustibles 5 Duct Requirements 5 CONDENSATE DRAINAGE 5 INSTALLING RETURN and SUPPLY FITTINGS uiuit 6 Supply Duct 6 Return Duct 6 LOCATING and INSTALLING the RETURN AIR ASSEMBLY 6 LOCATING and INSTALLING the SUPPLY DAMPERS 7 DUCTING SYSTEM 7 Connecting the Return and Supply Air Flexible Ducts 8 Blower Speed 8 ELECTRICAL CONNECTIONS 8 High Voltag
3. 13 REFRIGERANT CHARGING CHARTS for COOLING MODE of OPERATION 14 Figure 11 2 Ton Units 14 Figure 12 Ton Units 14 Figure 13 4 Ton Units 15 Figure 14 5 Ton Units 15 REFRIGERANT CHARGING TABLES for HEATING MODE of OPERATION 16 Charging Tables 2 amp Ton Units 16 Charging Tables 4 amp 5 Ton Units 17 WIRING DIAGRAMS 18 Figure 15 2 amp Ton Units 18 Figure 16 2 amp Ton Units 19 772 631 1243 SAFETY INFORMATION IMPORTANT Please read allinstructions before servicing this equipment Pay attention to all safety warnings and any other special notes highlighted in the manual Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored WARNING indicates a potentially hazardous situation that if not avoided could resultin personal injury or death CAUTION indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury or property damage USER INFORMATION About the Heat Pump Your heat pump is a unique all weather comfort control appliance that will heat and cool your home year round and provide energy saving comfort It s an unknown fact that heat
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6. USER s MANUAL amp INSTALLATION INSTRUCTIONS 2 Stage R 410A Single Package Heat Pump 15 SEER X SS S m m N m IMPORTANT Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit Keep this literature where you have easy access to it in the future If a problem occurs check the instructions and follow recommendations given If these suggestions don t eliminate your problem call your NORDYNE Servicing Contractor Service PRO These instructions are primarily intended to assist qualified individuals experienced in the proper installation of this appliance Some local codes require licensed installation service personnel for this type of equipment Please read all instructions carefully before starting the installation DO NOT DESTROY PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE www suncoolenergy com nergy Company SAFETY INFORMATION 3 USER INFORMATION 3 About the Heat pump 3 Operating Instructions
7. Y Fitting ompan 772 631 1 Note For highly resistive duct systems it may be necessary to add an additional return air duct and or supply to achieve maximum performance and prevent coil icing and refrigerant flood back Connecting the Return and Supply Air Flexible Ducts The return duct for all units is 14 diameter The supply duct for all units is 12 diameter The flexible ducts can be connected to the corresponding fittings with the clamps provided with the ducts Note To prevent a loss in cooling capacity make sure all connections are tight The flexible ducts may be cut to the required length see instructions packed with duct Keep all ducts as short and straight as possible Avoid sharp bends Ducts may be spliced with sheet metal sleeves and clamps Once the inner ductis connected to the proper fitting the insulation and plastic sleeve should be pulled over the connection and clamped Homes with multiple supply ducts or special applications a Y fitting is available to divide the supply air so it can be ducted to different areas of the home for more efficient cooling Note For maximum performance insulate the Y fitting Blower Speed For optimum system performance and comfort it may be necessary to change the factory speed setting See Table 2 10 for factory settings NOTE Q5RE models have High Efficiency Motors with 5 speed taps N WARNING To avoid electric shock personal
8. 5 6 Z 8 INDOOR DEFROST 9 THERMOSTAT BOARD Accessory Heat Plug SUB BASE Figure 9 Typical Wiring Field Supplied for 2 Stage Cool 2 Stage Electric Heat Air Flow Model Q5RF Wire Color Speed Tap Motor Speed 0 3 in WC OrangeT2 Medumbow 600 60 Denotes Factory Set Low Speed Cooling Heating Denotes Factory Set High Speed Cooling Heating Denotes Factory Set Electric Heating Speed Table 2 Motor Lead Connection W W n ool energy cami SunCool Energy Company 772 631 1243 www suncoolenergy com Control is uncalibrated when power is applied Calibration occurs after a defrost cycle The control initiates defrost after 34 minutes of accumulated compressor run time in heating with coil temperature below 35 F The defrost cycle terminates when the coil sensor reaches termination temperature or after 14 minutes Note All units are shipped from the factory with the default termination temperature set at 70 F Defrost function is disabled if coil temperature is above 35 F If the ambient sensor is detected as open or shorted demand defrost will not operate and control will revert to time temperature defrost operation If the outdoor coil sensor is detected as open or shorted the control will not perform demand or time temperature defrost operation Note When the defrost cycle initiates there will be a 30 second compressor delay going
9. 1 Evacuate the refrigerant system 2 Weigh in the proper charge as shown in Table 4 below and use the Heating Charging Tables pages 16 amp 17 as a guide Tables reflect conditions at high speed operation Unit charge MUST be verified in cooling season 3 Verify the unit is operating properly according to the heating functional checkout on page 12 System Charge Table 4 Heat Pump Charge 772 631 1243 18 Refrigerant Charging Charts for Cooling Mode of Operation Q5RF X24K CHARGING CHART 1 Remove refigerant when above curve LIQUID PRESSURE PSIG 105 110 LIQUID TEMPERATURE LIQUID PRESSURE PSIG 100 105 110 LIQUID TEMPERATURE F Fi 12 hart f t t har narn 772 631 1243 Refrigerant Charging Charts for Cooling Mode of Operation Continued Q5RF X48K CHARGING CHART LIQUID PRESSURE PSIG 105 110 LIQUID TEMPERATURE F LIQUID PRESSURE PSIG NE ES p lt L Add refrigerant when below curve 100 105 110 LIQUID TEMPERATURE F Fi 14 hart f t t www suncoolenergy com nar d Company s E eer zer rer zee 26 sie Les oer T oci ier ete ser iT ez er 506 ine en eer ae e serve eer eee rer ee zei toe eer eee vo oes is ooi sei
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11. of the heat pump will result in an increase in electric utility costs Defrost During cold weather heating operation the outdoor unit will develop a coating of snow and ice on the heat transfer coil This is normal and the unit will defrost itself This unit features Adaptive Demand Defrostthat monitors ambient and coil temperatures to regulate the defrost function accordingly 772 631 1 mm At the beginning of the defrost cycle both the outdoor condenser fan and compressor will turn off After approximately 30 seconds the compressor will turn on and begin to heat the outdoor coil causing the ice and snow to melt NOTE While the ice and snow is melting some steam may rise from the outdoor unit as the warm coil causes the melting frost to evaporate When defrost is completed the outdoor fan motor will start and the compressor will turn off again In approximately 30 seconds the compressor will start up again and continue normal operation System Shutdown Change the thermostat s system mode to OFF and the fan mode to AUTO See Figure 1 NOTE The system will not operate regardless of the temperature selector setting Warranty Information A warranty certificate with full details is included with the heat pump Carefully review these responsibilities with your dealer or service company The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup improper installatio
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13. acked at the time of shipment and upon arrival should be carefully inspected for damage Claims for damage apparent or concealed should be filed immediately with the carrier 772 631 1243 www suncoolenergy com HEAT PUMP INSTALLATION Locating the Heat pump Select a solid level position preferably on a concrete slab slightly above the grade level and parallel to the home DO NOT PLACE UNIT UNDER THE HOME The hot condenser air must be discharged up and away from the home and if possible in a direction with the prevailing wind Do not place the unit in a confined space If practical place the heat pump and its ducts in an area where they will be shaded from the afternoon sun when the heat load is greatest f possible select a site for the unit that is as close as possible to the proposed return grille location The length of the supply and return ducts should be kept to a minimum with no sharp radius bends Unpacking the Unit It is recommended that the unit be unpacked at the installation site to minimize damage due to handling N CAUTION Do not tip the unit on its side Oil may enter the compressor cylinders and cause starting trouble If unit has been set on its side restore to upright position and do not run for several hours Then run unitfor a few seconds Do this three or four times with five minutes between runs 1 Remove the bands from around the unit 2 Unfold the top a
14. ate fitting extends out of the side of the unit Figure 3 The drain trap shipped in the electrical compartment must be installed to prevent water from collecting inside the unit 1 Thread the elbow provided with the unit into the drain connection until hand tight 2 Connectthe condensate tubing onto the fitting forming a trap near the drain connection 3 Route the condensate tube from the trap to a suitable drain NOTE For proper drainage make sure the trap is level to the ground and tubing outlet is below trap level Figure 3 Drain Trap 772 63 1 1 ig INSTALLING RETURN AND SUPPLY AIR FITTINGS The supply and return fittings are included with the unit and located in the supply duct They attach to the unit openings Figure 4 with a flange and bead arrangement and may be secured with two sheet metal screws Note For easier access install fittings before positioning unit in final location Supply Duct 1 Position the supply duct collar so the edge of the unit opening fits between the flange and the bead 2 Overlap the collar ends keeping the small screw holes underneath 3 Align the holes in the crimped area and install one screw Note It may be necessary to loosen the four screws that hold the transition duct in order to install the supply fitting Re tighten when installation is complete 4 Tap collar if necessary to ensure engagement with unit opening and install second screw 5 Tighten first scre
15. ave elapsed Set the thermostat system mode to OFF and the thermostat fan mode to AUTO Apply power at the disconnect switch and check the system operations Air Circulation Leave the thermostat system mode on OFF and set the fan mode to ON Blower should run continuously Check the air delivery at the supply registers and adjust register openings for balanced air distribution Examine ductwork for leaks or obstruction if insufficient air is detected Setthe thermostat fan mode to AUTO The blower should stop running System Heating Set the thermostat system mode to HEAT and the fan mode to AUTO Change the thermostat temperature selector above the existing room temperature andcheck for the discharge of warm air at the supply registers System Cooling Set the thermostat s system mode to COOL and the fan mode to AUTO Change the thermostat temperature selector below the existing room temperature Allow the cooling system to operate for several minutes and check for the discharge of cool air at the supply registers Short Cycle Protection The control circuit is equipped with a time delay feature for protection against short cycling With the system operating in the cooling mode gradually raise the thermostat temperature WW SUNCOCIENENEY OI SunCool Energy Company setting until the whole system de energizes Immediately lower the thermostat temperature to the original setting and verify that the indoor blower is e
16. e 8 Low Voltage nnne nennen 8 Overcurrent Protection 9 Locating the Thermostat 9 2 Speed Outdoor Fan Motor 9 Low Pressure Switch 9 High Pressure Switch 9 Wy SunCool Energy Company Defrost Cycle Control 9 Ambient Sensor Mounting 11 Electric Heat Package 11 SYSTEM 12 Pre Start 12 Start Up Procedure 12 Air Circulation 12 System 12 System Cooling 12 Short Cycle Protection 12 Emergency 12 Defrost Test Procedure 12 Anti Short Cycle Timer Test 13 Heating Mode 13 Cooling Mode 13 ADJUSTMENT of REFRIGERANT CHARGE 2 iran na sana tarea dua an 13 Charging an R410A Unit in AC Mode at Outdoor Temperature above 65 13 Charging an 410 Unit in Heating
17. ed and located in the compressor discharge line internal to the unit The switch is designed to de energize the system when very high pressures occur during abnormal conditions Under normal conditions the switch is closed If the discharge pressure rises above 575 psig the switch will open and de energize the unit The switch will close again once the discharge pressure decreases to 460 psig The high pressure switch interrupts the thermostat inputs to the unit Note When the switch opens and then closes there will be a 3 minute short cycling delay before the unit can energize Defrost Cycle Control The defrost cycle is controlled by an adaptive demand defrost board which features Adaptive Demand Defrost algorithm 4 Field selectable defrost termination temperatures Field selectable delay feature High pressure and low pressure switches Sensing of second stage compressor demand Test speed up capability Anti short cycle timer 3 minutes for compressor protection On board diagnostics with flashing LED for quicker troubleshooting See Table 3 page 11 The adaptive Demand Defrost controls the defrost cycle in responseto an adaptive demand algorithm that uses coiltemperature and ambient temperature It provides user selectable defrost termination temperatures 50 F 80 F coil temperature 772 631 1 from Blower Relay Brown Orange d 12 3 4
18. f the heat duct 4 Insert the damper into the duct and bend over all tabs flat on the inside of the heat duct 5 Seal the opening between the fiberboard and damper or flexible duct _REGISTER AUTOMATIC DAMPER IS CLOSED WHEN HEAT PUMP IS OFF Figure 6 Supply Damper SINGLE DUCT APPLICATION DSSS 4 Hin N p WM H I 1 i NN e wing Multiple Duct Applicati mene e uc pP ications DUCTING SYSTEM Air ducts should be installed in accordance with the standards of the National Fire Protection Association Standard for Installation of Air Conditioning and Ventilation Systems NFPA 90A Standard for Installation of Residence Type Warm Air Heating and Air Conditioning Systems NFPA 90B these instructions and all applicable codes The supply duct system including the number and type of registers will have much more effect on the performance of the system than any other factor The duct must be sufficiently large to conduct an adequate amount of air to each register See Table 1 or Figure 7 The heat pump system will not cool or heat the home if air is lost to the outside through leaks in the duct system Ducts that are collapsed or restricted by foreign objects will also prevent adequate air flow e 12 x 20 Return Air 16 x 20 Air Filter 12 x 20 Grille Supply Damper 14 Diameter Flex Return Duct 12 Diameter Flex Supply Duct 12 x 12 x 12
19. injury or death turn off the electric power at disconnect or the main service panel before making any electrical connections 1 Disconnect all electrical power to the unit and remove the service panel N CAUTION Labelallwirespriortodisconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing N ergy Company 2 Locate the orange black and red wires terminated to the blower motor The orange wire controls the low speed cooling and heating operations the black wire controls high speed cooling and heating operations and the red wire controls the electric heating operation CAUTION To avoid personal injury or property damage make certain that the motor leads cannot come into contact with any metal components of the unit Verify the required speed from the airflow data foundin Table 2 Place appropriate wire on the appropriate motor speed tap for the required airflow Check all factory wiring per the unit wiring diagram and inspect the factory wiring connections to be sure none loosened during shipping or installation ELECTRICAL CONNECTIONS N WARNING To avoid electric shock personal injury or death turn off the electric power at the disconnect or the main service panel before making any electrical connections High Voltage 1 Installa branch circuit discon
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21. into and out of the defrost cycle This delay may be removed by removing P6 connector on the board This 2 stage unit will defrost in second stage regardless of the stage called for by the thermostat Diagnostic Description LED Status Control Fault No Power Normal Operation ASCD Delay Active with compressor demand Low Pressure Switch Lockout 1 Flash 2 Flashes 3 Flashes Ambient Sensor Fault 4 Flashes Coil Sensor Fault 5 Flashes Table 3 Control Diagnostic High Pressure Switch Lockout Ambient Sensor Mounting For optimum performance of the heat pump system the ambient sensor Figure 10 must be mounted on the outside of the unit 1 Remove the mounting bracket and all hardware included in the packet 2 Remove star bushing from 7 8 hole in corner panel of the unit 3 Route the ambient sensor through the 7 8 hole in the corner panel of the unit and then through the 7 8 hole in the mounting bracket 4 Route the sensor through the star bushing Use the star bushing to secure the mounting bracket to the unit 5 Secure the ambient sensor inside the plastic clip and secure it to the mounting bracket with the screw and nut provided unCool Energy Company 6 Install one spacer next between the plastic clip and mounting bracket 7 Bend the mounting bracket into position Install the mounting bracket to the unit using the screw in the corner panel
22. is always in the air even when the outside temperature is below freezing The heat pump uses this basic law of physics to provide energy saving heat during the winter months For example If the outdoor temperature is 47 F 8 C your heat pump can deliver approximately 3 5 units of heat energy per each unit of electrical energy used as compared to a maximum of only 1 unit of heat energy produced with conventional heating systems In colder temperatures the heat pump performs like an air conditioner run in reverse Available heat energy outside the home is absorbed by the refrigerant and exhausted inside the home This efficient process means you only pay for moving the heat from the outdoors to the indoor area You do not pay to generate the heat as is the case with more traditional furnace designs During summer the heat pump reverses the flow of the heat absorbing refrigerant to become an energy efficient central air conditioner Excess heat energy inside the home is absorbed by the refrigerant and exhausted outside the home Fan Mode System Temperature Mode Selector Figure 1 Digital Thermostat Wwww suncoo energy om unCool Energy Company Operating Instructions Cooling Operation 1 Set the thermostat s system mode to COOL or AUTO and change the fan mode to AUTO See Figure 1 2 Set the temperature selector to the desired temperature level The outdoor fan compressor and blower motor will all c
23. ists 2 After measuring the return air box approximately 12 1 4 x 20 1 4 cut the hole through the floor so that the box will fit between the floor joists Care should be taken when cutting through carpeting to avoid snags NOTE In mostinstallations it will be necessary to cut a similar hole in the fiberboard directly under the hole in the floor However if the floor is more than ten inches deep it will only be necessary to cut a hole for the collar on the return air box or for the insulated duct 3 Set the box into the opening and fasten with Screws or nails 4 Put the filter and return air grille in place Figure 5 Return Air Box 772 631 1243 LOCATING AND INSTALLING THE SUPPLY DAMPER S When locating the supply damper s carefully check floor joists and frame members that could interfere with the installation of the damper or flexible duct Ideally the damper Figure 6 should be located in the bottom ofthe main duct forward of center of the home at least three feet from the nearest register The round supply opening in the slanted side of the damper should face the side of the home where the heat pump is located 1 Locate the center of the heat duct by cutting a small hole in the fiberboard below the duct at the desired location 2 Cut a hole approximately 3 4 larger than the damper opening in the fiberboard 3 Cut a 9 1 8 x 13 1 8 hole the duct and bend over all tabs flat on the inside o
24. n adjustments improper operating procedure on the part of the user etc Some specific examples of service calls which are not included in the limited warranty are 1 Correcting wiring problems in the electrical circuit supplying the heat pump 2 Resetting circuit breakers or other switches 3 Adjusting or calibrating of thermostat INSTALLER INFORMATION General Information The installer should comply with all local codes and regulations which govern the installation of this type of equipment Local codes and regulations take precedence over any recommendations contained in these instructions Consult local building codes and the National Electrical Code ANSI Cl for special installation requirements Read the following instructions completely before performing the installation Some states require installation and service personnelto belicensed Unqualifiedindividuals should not attempt to interpret these instructions or install this equipment This equipment contains R 410A refrigerant under high pressure Installation or servicing should only be performed by qualified trained personnel thoroughly familiar with this type equipment and related system components WHY SUNCOCIENENEY OI SunCool Energy Company N CAUTION This unit uses refrigerant R 410A DO NOT under any circumstances use any other refrigerant in this unit Use of another refrigerant will damage the unit Single packaged heat pumps are read
25. nd bottom cap flanges 3 Carefully remove the top cap and tube Minimum Clearances Minimum clearances MUST be maintained from adjacent structures to provide room for proper servicing and air circulation See Figure 2 DO NOT installunitin a confined or recessed area that will allow discharge air from the unitto re circulate into the condenser air inlet through the coil Service Access Clearance Blower access panel side 24 Electrical compartment access panel side 12 Clearance between overhang and TOP POM UMIE eere ten 72 Clearance around condenser coil area to wall or shrubs excludes duct panel side 12 SunCool Energy Company NN SY ES SS II H NNNN SS iN 48441 J HIT AAS NNN Wt vA TI Figure 2 Minimum Unit Clearances Clearances to Combustible Materials Combustible Base Wood or Class A B or C roof Covering material 0 Supply and Return Air Ducts 0 Duct Connection side 0 Duct Requirements The supply duct system including the number and type of registers will have much more effect on the performance of an air conditioning system then any other factor The duct must be sufficiently large to conduct an adequate amount of air to each register CONDENSATE DRAINAGE A 3 4 condens
26. nect of adequate size as specified by the National Electrical Code Locate the disconnect within sight of the unit Extend leads through power wiring hole Figure 9 Connect L1 and L2 directly to the contactor Ground the heat pump unit using the green grounding screw provided in the control panel Low Voltage 1 Route 24V control wires through the sealing grommet Figure 8 near the power entrance 2 Connectthe control wires to the defrost board and blower relay wire Figure 9 page 10 772 631 1243 www suncoolenergy com High Voltage Low Voltage Figure 8 Power Entry Overcurrent Protection Generally the best fuse or breaker for any heat pump is the smallest size that will permit the equipmentto run under normal usage and provide maximum equipment protection Properly sized fuses and breakers also prevent nuisance trips during unit startup If a fuse blows or a breaker trips always determine the reason Do not arbitrarily install a larger fuse or breaker and donot in any case exceed the maximum size listed on the data label of the unit Locating the Thermostat Locate the thermostat away from drafts and slamming doors The thermostat must not be installed on an outside wall or any other location where its operation may be adversely affected by radiant heat from fireplaces sunlight or lighting fixtures or convective heat sources such as supply air registers or electrical appliances Mount on an in
27. nergized After approximately 3 minutes the compressor and the outdoor fan will energize Emergency Heat Available only when Electric heat is supplied Set the thermostat s system mode to EM HT and the fan mode to either AUTO intermittent air or to ON continuous air Change the thermostat s temperature selector above the existing room temperature and check the following 1 The thermostat auxiliary heat light RED should be on 2 The heat pump compressor and the fan should not run low voltage circuit remains energized The blower will run according to the thermostat s fan mode setting Defrost Test Procedure 1 Terminals R amp C must have 18 30V between them for defrost sequences to initiate 2 Withthermostat in heat mode Y connected to R short and hold the TEST pins together NOTE This energizes the reversing valve to initiate a forced defrost bypass the ASCD and allow the high stage compressor to turn on immediately if the REMOVE FOR NO DELAY jumper at P6 is removed If the REMOVE FOR NO DELAY jumper at P6 is installed the compressor will energize after a 30 second delay 3 Remove the short on the TEST pins e fthe Coil temperature is above the Terminate Temperature setting the defrost cycle will terminate reversing valve de energizes fthe coil temperature is below the Terminate Temperature setting the defrost cycle will continue for 14 minutes or u
28. ntil the coil temperature rises above the Terminate Temperature setting Short the TEST pins for 1 second or more to force the control out of defrost and back to heating mode reversing valve de energized Compressor will start immediately if the REMOVE FOR NO DELAY jumper is removed NOTE If the REMOVE FOR NO DELAY jumper is installed the compressor will energize after a 30 second delay Note If the Y2 thermostat input is energized on a 2 stage system the second stage turns on Ifthe above steps will not initiate a defrost replace the defrost board 772 631 1243 www suncoolenergy com Anti Short Cycle Timer Test The3 minute time delay feature can be bypassed by shorting the TEST pins together Heating Mode When the TEST pins are shorted together for more than 1 second the control will switch between defrost mode and heating mode as described in the Defrost Test Procedure section page 12 Cooling Mode When the TEST pins are shorted together for more than 1 second the Anti Short Cycle Timer will be bypassed ADJUSTMENT OF REFRIGERANT CHARGE CAUTION This heat pump contains liquid and gaseous refrigerant under pressure Adjustmentofrefrigerant charge should only be attempted by qualified trained personnel thoroughly familiar with the equipment and safe responsible refrigerant handling procedures Under no circumstances should the homeowner attempt to install and
29. or service this equipment Failureto comply with this warning could resultin equipment damage personal injury or death NOTE The unit must be charged while both first and second stages are operating NOTE To achieve rated capacity and efficiency the compressor must be exposed to refrigerant for at least 24 hours prior to running and then must be run fora minimum of 12 hours See Refrigerant Charging Charts Figures 11 14 pages 14 amp 15 for Charging in Cooling Mode Charging an R 410A Unit in AC Mode with Outdoor Temperatures Above 65F 1 With the system operating at steady state measure the liquid refrigerant pressure in psig at the service valve Measure the liquid refrigerant temperature F at the service valve 3 Forthe temperature measured determine the required liquid refrigerant pressure from the appropriate charging chart Table 4 Ifthe pressure measured in step 1 is greater than the required liquid N e unCool Energy Company determined in step 4 then there is too much charge in the system Remove refrigerant and repeat steps 1 through 3 until the system is correctly charged e f the pressure measured in step 1 is less than the required liquid refrigerant pressure determined in step 4 then there is too little charge in the system Add refrigerant and repeat steps 1 through 3 until the system is correctly charged Charging an R 410A Unit in Heating Mode
30. places 7090640 Specifications and illustrations subject to change without notice or incurring obligations COMPLETE COMFORT GENUINE VALUE NORDYNE
31. side wall approximately five feet from the floor This heat pump is a two stage Cooling and Heating appliance that requires a 2 stage Cooling Heating thermostat The heat cool thermostat prevents simultaneous operation of the heating and cooling units and is equipped with an ON AUTO fan mode that allows the home owner to operate the indoor blower when only air circulation is desired Connect the low voltage wires to the respective terminals on the thermostat base Figure 9 See thermostat instruction sheet for more detailed information 2 Speed Outdoor Fan Motor Select Models Ifthe unitutilizes a 2 speed condenserfan motor this motor will operate on low speed when in low cooling heating and on high speed when in high cooling heating SunCool Energy Company Low Pressure Switch The low pressure switch is factory installed and located the suction line internal to the unit The switch is designed to protect the compressor if a loss of charge occurs Under normal conditions the switch is closed If the suction pressure falls below 5 psig then the switch willopen and de energizethe unit The switch will close again once the suction pressure increases above 20 psig The low pressure Switch interrupts the thermostat inputs to the unit Note When the switch opens and then closes there willbe a 3 minute short cycling delay before the unit can energize High Pressure Switch The high pressure switch is factory install
32. w and rotate collar clockwise so joint is near three o clock position Return Duct 1 Align the slots with the holes in the collar and install two screws 2 Position the collar over the opening and align the four notches in the collar with the four dimples in the panel 3 Using self drilling screws 10 16x 5 attach the collar to the rear panel Return Air Supply Air Figure 4 Return and Supply Air Fittings WONW SHIIEOOISnEREY GOIm SunCool Energy Company LOCATING AND INSTALLING THE RETURN AIR ASSEMBLY To simplify installation locate and install the return air assembly first If desired the return opening can be located inside a closet with louvered doors that has an open area equal to or greater than the 12 x 20 grille furnished The return air grille can be placed in the wall of a closet and the air ducted into the filter box through a boxed in area atthe closetfloor level Make sure the filter is readily accessible NOTE The return air box with grille and filter Figure 5 should not be located in heavy traffic areas like hallways or center of rooms A good spotis in a corner or under a table if a minimum two inch clearance is available 1 Start the installation from under the home by cutting a small hole in the subfloor Determine how the floor joist location will affect cutting the opening needed for the return air box NOTE Floor joists are generally located on 16 centers leaving 14 3 8 between jo
33. y for easy and immediate installation and can be readily connected into the high static duct system of a home This unit is completely assembled wired and run tested at the factory This heat pump is designed for outdoor installation only The only connections needed for installation are the supply and return ducts the line voltage and thermostat wiring A complete heat pump system typically consists of Single Package Heat Pump Home Fittings Kit Unit Fittings Kit 2 Stage Cooling Heating Thermostat Use of components other than those specified may invalidate ARI Certification Code Agency Listing and limited warranty on the air conditioner Pre Installation Check Before you install this unit the cooling load of the area to be conditioned must be calculated and a system of the proper capacity selected It is recommended that the area to be conditioned be completely insulated and vapor sealed The electrical supply should be checked to determine if adequate power is available If there is any question concerning the power supply contact the local power company N CAUTION To prevent personal injury and or equipment damage checkthermostat manufacturer s operation of fan relay circuit when in EMER HEAT When the thermostat system mode is in the EMER HEAT position the thermostat must energize the fan relay when the fan mode is in the AUTO position Inspecting Equipment All units are securely p
34. ycle on and off to maintain the indoor temperature at the desired cooling level NOTE If the temperature level is re adjusted or the system mode is reset the fan and compressor in the outdoor unit may not start immediately A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power Heating Operation 1 Set the thermostat s system mode to HEAT or AUTO and change the fan mode to AUTO See Figure 1 2 Set the temperature selector to the desired temperature level The compressor outdoor fan and blower motor will cycle on and off to maintainthe indoortemperature atthe desired heating level NOTE If the temperature level is re adjusted or the system mode is reset the fan and compressor in the outdoor unit may not start immediately A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power Emergency Heat Some thermostats may include a system mode called EM HT or AUX HT etc This is a back up heating mode that should only be used if a problem is suspected With the mode set to EM HT etc the compressor and outdoor fan will be locked off and supplemental heat electric resistance heating will be used as a source of heat Sustained use of electric resistance heat in place
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