(K,C)A - Nordyne
Contents
1. eese 12 High Pressure Switch 12 Low Pressure Switch 12 Replacement Parts eee 12 Figures amp Tables 13 Figure 11 Unit Dimensions 13 Table 1 PSRA Physical Data 13 Wiring Diagrams eeeeeeeeenm 14 Figure 12 Single Phase 3 4 amp 5 Ton 14 Figure 13 Three Phase 5 Ton Only 15 Refrigerant Charging Charts 16 Figure 14 Ton 16 Figure 15 4 Ton 16 Figure 16 5 Ton 17 Blower Performance esee 17 Table 2 P3RA Airflow 17 Installation Performance Checklist 20 USER INFORMATION IMPORTANT SAFETY INFORMATION Safety markings are used 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 OPERATING INSTRUCTIONS NOTE Thermostat styles vary Some2. 1 1 S 31ON 33S ONIYIM 91915 29 01 A Sj2euuoo 9JIM YMS ainssald OU spun uo gt MOTI3A YOLIOVdvO s13dOW 193135 MS SS3Hd ama YOLOW YOOOLNO MOTI3A MOTT3A s13aowW 193139 391815 8 3A lt MOTI3A lt Movig HO LOVLNOO 3dlHlS MS 55 9 310N 33S YAWYOASNVYL Lt 802 woo SLIHM U HINAX O HWJX IC dn qaads quvoga AV 13H YOLOVWdVO reuondo e snid ep xne sed N eJAIno sep jueuianbiun zo ojdui3 JUeINOD ZHO9 M S punog AS gt Ajddng agoz uo eoejd pue de Agoz 104 9 3oejg suonoeuuoo 1 peads 5 HOA 022 80 9 uid sejyeoipu gt 10126831002 99 pieog 828 s13aOW 129135 MS SS3ud MS 55 QHVOG 1081 00 AV T3H 9 31ON 33S H3WHOJSNV
3. M8 3A M8 3A MS SS3Hd HOLOVINOO xovig 9 31ON 33S H3WHOJSNVHL Lt 802 Ovid SLIHM C H HWJX ANAX C 43385 Qquvog IOHLNOO AV T3H E Ajddng dei Ag0z uo pue de asm eAouie Agoz 104 9 4oejg suonoeuuoo 1 peads HOA 0 2 802 uoneoo uid sajeoipur uonoeuuoo gt gt 1109 101261002 99 5 808 S13aOW 199135 MS SS3Hd MS SS3Hud 9 31ON 33S H3WHOdSNVH L HOSSdHdWOO S ALON 33S 3OVLTOA INT a 801 10 10 5 s10jonpuoo esn saJiw 104 t puno4f 0 Py suiejs s uo JON 2 s10jonpuoo 4eddoo esn suomnoeuuoo Ajddns 103 Pupas 12euuoosiq SALON Jeuonipuo peBeyxoeg ews WVH9VIA 9NIHIM Figure 13 P3RA Wiring Diagram 3 Phase with PSC Motor 5 Ton Models Only 15 LL Rated design values The suction pressure will vary from design value if outdoor air flow entering dry REFRIGERANT CHARGING CHARTS Refrigerant Charging Chart Legend Shaded boxes indicate flooded conditions bulb or entering wet bulb temperatures vary 1 All pressu
4. off main power to the unit and switch any two field wires at the disconnect DO NOT alter unit wiring Short Cycle Protection The control circuit may be equipped with a time delay feature for protection against short cycling With the system operating in the cooling mode gradually raise the thermostat temperature setting until the whole system de energizes Immediately lower the thermostat temperature to the original setting and verify that the indoor blower is energized After approximately 5 minutes the compressor and the outdoor fan will energize Adjustment of Refrigerant Charge A CAUTION This air conditioner contains liquid and gaseous refrigerant under pressure Adjustment of refrigerant 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 or service this equipment Failure to comply with this warning could result in equipment damage personal injury or death Toachieve rated capacity and efficiency the compressor must run for a minimum of 12 hours The refrigerant charge can be checked and adjusted through the service ports provided external to the unit Use only gage line sets which have a Schrader depression device present to actuate the valve Charge Verification for R 22 Units in AC Mode with Outdoor Temperatures Above 55 F 1
5. when the heat load is greatest e The length of the supply and return ducts should be kept to a minimum with no sharp radius bends Overhead obstructions poorly ventilated areas and areas subject to accumulation of debris should be avoided 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 Consideration should also be given to availability of electric power service access noise and shade Minimum Clearance Requirements Sufficient clearance for unobstructed airflow through the outdoor coil must be maintained in order to provide room for proper servicing and achieve rated performance See Figure 2 for minimum clearances to obstructions Service Access Clearances Blower access panel side 24 Electrical compartment access panel side 12 Clearance between overhang and top of unit 72 Clearance around condenser coil area to wall or shrubs excludes duct panel side 12 Clearances to Combustible Materials Supply and return air 0 Duct connection side rnern 24 E 2 LL a O H TO BE UNOBSTRUCTED Figure 2 Minimum Unit Clearances Air Duct System Air ducts must be installed in accordance with local codes and regulations for air condit
6. 1800 1740 1680 1620 1540 1470 1660 1610 1560 1500 1430 1360 Based 230 Volt operation dry coil and no filters NOTE Blower performance data shown above 0 30 WC external static pressure ESP is for reference only Maximum allowable external static pressure with electric heat added to unit is 0 30 WC O60KA 060 Table 2 P3RA Airflow Data 17 18 19 INSTALLATION PERFORMANCE CHECK LIST INSTALLATION ADDRESS REFRIGERATION SYSTEM Was unit given 24 hr warm up period for crankcase heaters if installed YES CITY Stage 1 Liquid Pressure high side UNIT MODEL UNIT SERIAL Stage 1 Suction Pressure low side Unit Installed Minimum clearances per Has the owner s information been YES Figure 2 page 5 reviewed with the customer Has the Literature Package been left INSTALLER NAME with the unit INSTALLER See ee PLEASE LEAVE THESE INSTALLATION eee ae INSTRUCTIONS WITH THE HOMEOWNER Line voltage polarity correct NO Has the thermostat been calibrated NO NO Is the thermostat level Is the heat anticipator setting correct If Applicable This section for 3 Phase models only Rated Voltage L1 L2 Volts L1 L3 Volts L2 L3 Volts Avg Volts Max deviation of voltage from avg volts 96 Volt imbalance www ahridirectory org Unitary Small AC Standard 210 240 Certification applies only when the c
7. Transformer GREEN Yellow Cooling 1st Stage BROWN Brown gan 151 Orange Heating 2nd Stage Two Stage Electric Heat Optional Outdoor Thermostat Field Supplied Figure 9 Low Voltage Connections 10 If you have one thermostat for heating and another for cooling they must be interlocked to prevent simultaneous operation See Figure 10 1 Turnthe heating thermostatto its lowest possible setting 2 If the cooling thermostat has an On Off switch turn it On 3 Set the cooling thermostat to the desired temperature 4 Turn the power on Your air conditioner should start when room temperature exceeds the thermostat setting Cooling Thermostat Furnace Thermostat Ao Double Throw Double Pole Switch To Air Conditioner To Furnace Figure 10 Thermostat Interlock System Blower Speed For optimum system performance and comfort it may be necessary to change the factory speed setting A 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 Standard Motor 3 4 amp 5 Ton 1 Disconnect all electrical power to the unit and remove the service panel 2 Place the desired blower speed lead on the COM terminal Use another wire tie field supplied t
8. models may not include the AUTO mode and others will have the AUTO in addition to HEAT and COOL selections Please refer to the thermostat manufacturer s User manual for detailed programming instructions NOTE Ifthe temperature level is re adjusted or the system mode is reset the fan and compressor in the unit may not start immediately A protective timer circuit may hold the compressor and the outdoor fan off for approximately 5 minutes following a previous operation or the interruption of the main electrical power Cooling Operation 1 Set the thermostat s system mode to COOL or AUTO and change the fan mode to AUTO See Figure 1 2 Setthe temperature selector to the desired temperature level The outdoor fan compressor and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level Heating Operation optional 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 furnace or electric heater kit and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level Fan Mode Figure 1 Digital Thermostat System Temperature Mode Selector Turning the Air Conditioner OFF 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
9. setting Operating the Indoor Blower Continuously The continuous indoor blower operation is typically used to circulate the indoor airto equalize atemperature unbalance due to a sun load cooking or fireplace operation Set the thermostat fan mode to ON Figure 1 The indoor blower starts immediately and will run continually until the fan mode is reset to AUTO The continuous indoor blower operation can be obtained with the thermostat system mode set in any position including OFF AIR CONDITIONER MAINTENANCE Proper maintenance is most important to achieve the best performance from the appliance and should be performed frequently at the beginning of each air conditioning season A WARNING Your Air Conditioner contains liquid and gaseous refrigerant under pressure Installation and servicing should only be attempted by qualified trained personnel thoroughly familiar with the equipment and safe responsible refrigerant handling procedures Failure to comply with this warning could result in equipment damage personal injury or death Keep the unit clean Hose off periodically and keep unit fins clear of leaves and grass clippings Keep the unit clear of obstructions DO NOT obstruct airflow with tall plants or shrubs DO NOT store gasoline or other flammable materials on or near the unit Never operate the appliance without a filter installed in the return air duct Inspect filters frequently and replace when neces
10. startup If a fuse blows or a breaker trips always determine the reason Do not arbitrarily install a larger fuse or breaker and do not in any case exceed the maximum size listed on the data label of the unit Grounding A WARNING The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur Do not use gas piping as an electrical ground This unit must be electrically grounded in accordance with local codes or in the absence of local codes with the national codes Ground the air conditioning unit using the green grounding screw provided in the control panel Unbalanced 3 Phase Supply Voltage Voltage unbalance occurs when the voltages of all phases of a 3 phase power supply are no longer equal This unbalance reduces motor efficiency and performance Some underlying causes of voltage unbalance may include Lack of symmetry in transmission lines large single phase loads and unbalanced or overloaded transformers A motor should never be operated when a phase imbalance in supply is greater than 2 Perform the following steps to determine the percentage of voltage imbalance 1 Measure the line voltages of your 3 phase power supply where it enters the building and at a location that will only be dedicated to the unit installation at the units circuit protection or disconnect Example AB 226V BC 230V AC 227V 2 Determine the av
11. with the four dimples or holes depending on unit model in the panel 3 Using self drilling screws 10 16x 5 attach the collar to the rear panel Connecting the Return amp Supply Air Flexible Ducts The return duct collar for 3 ton models is 12 diameter and 14 for 4 amp 5 ton models The supply duct collar for all models is 12 diameter Flexible ducts can be connected to the corresponding fittings with the clamps provided with the ducts See Table 1 Note To prevent a loss in cooling capacity make sure all connections are tight e 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 After the inner duct is 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 Locating amp 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 a 12 x 20 grille The return air g
12. ATIC DAMPER IS CLOSED WHEN A C UNIT IS OFF Figure 6 Supply Damper Locating amp Installing the Supply Damper s A CAUTION If installing this air conditioning system in conjunction with a furnace a damper must be installed in the furnace base assembly to prevent cold air from being discharged around the heat exchanger Damage to the heat exchanger and asphyxiation may occur if a damper is not installed Checkwith the furnace manufacturer for damper requirements Failure to install the required furnace damper may invalidate code agency listing and limited warranty on the furnace 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 of the 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 air conditioner 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 in the duct and bend over all tabs flat on the inside of the heat duct 4 Insert the damper into the duct and bend over all tabs flat on the inside of the heat duct 5 Se
13. H L HOLON Os S ALON 33S INIT zi 801 10 10 eJqeiins s10jonpuoo esn jueureae doJ 104 tp A0S L yey suiejs S uo JON 1eddoo esn Ajddns 104 2 1eMod S310N pebeyoeg ews 9NIHIM Figure 12 P3RA Single Phase with PSC Motor 3 4 amp 5 Ton Models 14 WIRING DIAGRAMS CONTINUED OLEO jejsouueu OL 0060111 HOLIOVdvoO MOTI3A 3dlHlS HMG 3dlH 1S 48 3A HOoSSdudWOoo si ou 1snui JejyeoH 10 6 4 S 31ON 33S jeuondo Jexeeig YNO MaS punog 1 1 6419 e e snid ep suonejjejsui xne sed N 2 UD sap 291 3 2 jueAe JULINOD 5 ZHO9 ONIYIM 91915 aN3931 99 0 A SM YMS eunsseJd OU yum UO mom S1aGOW 1931139 MS SS3Hd HOLON H9IH HOOGLNO MOTISA S13GQW 103139 3dlHlS MOTISA lt
14. P3RA SERIES 10 SEER USER s MANUAL amp INSTALLATION INSTRUCTIONS R 22 Single Package Air Conditioner IMPORTANT User 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 servicing contractor The Installation 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 USER INFORMATION Important Safety Information 3 Operating 3 Cooling Operation eee aiid 3 Heating Operation sss 3 Turning the Air Conditioner 3 Operating the Indoor Blower Continuously 3 Air Conditioner 3 Troubleshooting eee 3 WARRANTY INFORMATION A warranty certifica
15. With the system operating at steady state measure the discharge refrigerant pressure in psig at the service valve 2 Measure the suction refrigerant pressure psig at the service valve 3 Determine the appropriate charge from the charts Figures 14 16 pages 16 17 for the discharge temperature measured 11 AIR CONDITIONER MAINTENANCE A WARNING To prevent electrical shock personal injury or death disconnect all electrical power to the unit before performing any maintenance or service The unit may have more than one electrical supply Proper maintenance is important to achieve optimum performance from the air conditioner The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools If you do not possess these skills contact your dealer for maintenance Consult your local dealer about the availability of maintenance contracts Routine maintenance should include the following Inspect and clean or replace air filters at the beginning of each heating and cooling season or more frequently if required Inspect the condensate drain and outdoor coil at the beginning of each cooling season Remove any debris Clean the outdoor coil and louvers as necessary using amild detergent and water Rinse thoroughly with water Inspect the electrical connections for tightness at the beginning of each heating and cooling season Service as necessary A CAUTION The unit should neve
16. al installation requirements All electrical wiring must be completed in accordance with local state and national codes and regulations This equipment contains nitrogen gas Installation or servicing should only be performed by qualified trained personnel thoroughly familiar with this type equipment This unit is designed for outdoor installations only and should be located in a position as shown on page 5 Follow all precautions in the literature on tags and on labels provided with the equipment Read and thoroughly understand the instructions provided with the equipment prior to performing the installation and operational checkout of the equipment GENERAL INFORMATION The P3RA packaged air conditioner is designed only for outdoor ground level installations and can be readily connectedtothe high static duct system of a home This unit has been tested for capacity and efficiency in accordance with A R lI Standards and will provide many years of safe and dependable comfort providing it is properly installed and maintained Abuse improper use and or improper maintenance can shorten the life of the appliance and create unsafe hazards Toachieve optimum performance and minimize equipment failure it is recommended that periodic maintenance be performed on this unit The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools Before You Install this Unit The coo
17. al the opening between the fiberboard and damper or flexible duct Condensate Drainage A 3 4 condensate 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 Connect the 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 NY Line Voltage Low Voltage Figure 8 Power Entry ELECTRICAL CONNECTIONS A WARNING To avoid risk of electrical shock personal injury or death disconnect all electrical power to the unit before performing any maintenance or service The unit may have more than one electrical supply Label all wires prior to disconnection when servicing the unit Wiring errors can cause improper and dangerous operation All electrical connections must be in compliance with all applicable local codes ordinances and current national codes Pre Electrical Checklist Verify that the voltage frequency and phase of the supply source match the specifications on the unit rating plate V Verify that the service provided by the utility is sufficient to handle the additional
18. at should be mounted about 5 feet above the floor on an inside wall DO NOT install the thermostat on an outside wall or any other location where its operation may be adversely affected by radiant heat from fireplaces sunlight or lighting fixtures and convective heat from warm air registers or electrical appliances Refer to the thermostat manufacturer s instruction sheet for detailed mounting information Cooling Thermostat Connect the red amp yellow wires from the unit to the R amp Y terminals on the thermostat subbase Connect the green wire to the yellow wire at the unit See Figure 9 Heat Cool Thermostat This unit requires the use of a single stage Heating Cooling thermostat The heat cool thermostat prevents simultaneous operation of the heating and cooling modes of operation 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 red yellow green and brown low voltage wires to the R or RC Y G amp W terminals respectively on the thermostat base The black wire is the 24 volt common required on some thermostats See Figure 9 4 Wire Heat Cool Thermostat 2 Wire Cooling Thermostat Li nen r YELLOW R RED YQ YELLOW GQ RO YO GREEN GREEN BROWN BROWN ORANGE ingle Stage Electric Heat Control Wire Legend Green Blower Relay YELLOW Red
19. emain under vacuum for at least 30 minutes 5 Inspect the unit rating plate for the proper type of refrigerant and quantity 6 Weigh in the proper amount of new or reclaimed refrigerant Start Up Procedure The control circuit may consist of an anti short cycle timer that will not let the compressor re start before 5 minutes have elapsed 1 Set the system mode to OFF and the temperature mode to its highest setting 2 Turn power on at the disconnect switch 3 Set the system mode to ON or COOL 4 Set the temperature mode below room temperature Verify that the indoor blower outdoor fan and compressor energize and the cooling function starts 5 Verify the discharge air grilles are adjusted and the system air is balanced 6 Verify the duct work has no air leaks 7 Verify the condensate drain is installed correctly and functions properly 8 Set the temperature mode above room temperature The unit should stop 9 Instructthe homeowner on unit andthermostat operation and filter servicing 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 Verify HI and LO refrigerant pressures FOR 3 Phase Models Only If refrigerant pressures are abnormal and the compressor is rotating backwards shut
20. erage voltage in the power supply In this example the measured line voltages were 226 230 and 227 The average would be 228 volts 226 230 227 683 3 228 3 Determine the maximum deviation Example From the values given in step 1 the BC voltage 230V is the greatest difference in value from the average 230 228 2 Highest Value 228 226 2 228 227 1 4 Determine percent of voltage imbalance by using the results from steps 2 amp 3 inthe following equation Example 0 88 2 100 x 228 max voltage deviation from average voltage Voltage Imbalance 100 average voltage The amount of phase imbalance 0 88 is satisfactory since the amount is lower than the maximum allowable 2 Please contact your local electric utility company if your voltage imbalance is more than 296 Thermostat Low Voltage Connections e The unit is designed to operate from a 24 VAC Class 11 control circuit The control circuit wiring must comply with applicable local codes having jurisdiction Thermostat connections should be made in accordance with the instructions supplied with the thermostat and the indoor equipment The low voltage wires must be properly connected Route 24V control wires through the sealing grommet Figure 8 page 8 near the power entrance e Single stage thermostats can be used with this equipment The thermost
21. eunitrequires both power and control circuit electrical connections Refer to the wiring diagram schematic Figures 12 amp 13 pages 14 amp 15 for identification and location of unit field wiring interfaces Make all electrical connections in accordance with all applicable codes and ordinances e Overcurrent protection must be provided at the branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits Use only copper wire for the line voltage power supply to this unit Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit Use of rain tight conduit is recommended 208 230 Volt units are shipped from the factory wired for 230 volt operation For 208V operation remove the lead from the transformer terminal marked 240V and connect it to the terminal marked 208V Optional equipment requiring connection to the power or control circuits must be wired in strict accordance of all applicable local codes and the instructions provided with the equipment Overcurrent Protection Generally the best fuse or breaker for any air conditioner is the smallest size that will permit the equipment to run under normal usage and provide maximum equipment protection Properly sized fuses and breakers also prevent nuisance trips during unit
22. ioning and ventilation standards e 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 Figure 4 page 7 Ductwork should be attached directly to the unit flanges for horizontal applications e 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 The air conditioning output of the system will not cool 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 All duct work passing through unconditioned space must be properly insulated to minimize duct losses and prevent condensation Use insulation with an outer vapor barrier Refer to local codes for insulation material requirements AIR CONDITIONER INSTALLATION Unpacking the Unit It is recommended that the unit be unpacked at the installation site to minimize damage due to handling A 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 unit for a few seconds Do this three or four
23. ire electrical shock or other hazardous conditions which may result in personal injury or property damage A WARNING P3RA Single Package Air Conditioners leave the factory with a nitrogen holding charge Follow all charging instructions for maximum unit performance and efficiency Some local codes require licensed installation service personnel to service this type of equipment Refrigerant charging must be done by qualified personnelfamiliar with safe and environmentally responsible refrigerant handling procedures Under no circumstances should the owner attemptto install and or servicethis equipment Failureto comply withthis warning could result in property damage personal injury or death CAUTION This unit uses refrigerant R 22 DO NOT use any other refrigerant in this unit Use of another refrigerant will damage the unit A WARNING The information listed below must be followed during the installation service and operation of this unit Unqualified individuals should not attempt to interpret these instructions or install this equipment Failure to follow safety recommendations could result in possible damage to the equipment serious personal injury or death The installer must 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 codes for speci
24. ling load of the area to be conditioned must be calculated and a system ofthe proper capacity selected It is recommended that the area to be conditioned be completely insulated and vapor sealed V Check the electrical supply and verify the power supply is adequate for unit operation If there is any question concerning the power supply contact the local power company V Allunits are securely packed at the time of shipmentand upon arrival should be carefully inspected for damage prior to installing the equipment at the job site Verify coil fins are straight If necessary comb fins to remove flattened or bent fins Claims for damage apparent or concealed should be filed immediately with the carrier V Please consult your dealer for maintenance information and availability of maintenance contracts Please read all instructions before installing the unit Locating the Air Conditioner Survey the job site to determine the best location for mounting the outdoor unit Selecta solid level position preferably on a concrete slab slightly above the grade level and parallel to the home If possible select a site for the unit that is as close as possible to the proposed return grille location DO NOT PLACE UNIT UNDER THE HOME The unit should be located with consideration of minimizing the length of the supply and return ducts If practical place the air conditioner and its ducts in an area where they will be shaded from the afternoon sun
25. load imposed by this equipment Refer to the unit wiring label for proper high and low voltage wiring V Verify factory wiring is in accordance with the unit wiring diagram Figures 12 or 13 pages 14 amp 15 Inspect for loose connections Y Phase balance on 3 phase units must always be checked See Unbalanced 3 Phase Supply Voltage section page 9 Line Voltage A wiring diagram is located on the inside cover of the electrical box of the unit The installer should become familiar with the wiring diagram before making any electrical connections to the unit An electrical disconnect must be located within sight of and readily accessible to the unit This switch shall be capable of electrically de energizing the unit Line voltage to the unit should be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit Incoming field wiring and minimum size of electrical conductors and circuit protection mustbe in compliance with information listed on the unit data label Any other wiring methods must be acceptable to authority having jurisdiction Provide power supply forthe unitin accordance with the unit wiring diagram and the unit rating plate Connect the line voltage leads to the terminals on the contactor inside the control compartment Extend leads through power wiring hole Figure 8 Connect L1 amp L2 directly to the contactor For 3 phase models connect L3 to the contactor Th
26. o bundle the remaining motor leads 3 Check all factory wiring as shown in the wiring diagram and inspect the connections to make sure none of them loosened during shipping or installation START UP amp ADJUSTMENTS Before You Start the Unit The following check list should be observed prior to starting the unit Verify the unit is level and allows proper condensate drainage V Verify the outdoor coil and top of the unit are free from obstructions and debris and all equipment access control panels are in place Unit must be installed with the proper clearances as listed in Figure 2 page 5 V Verify thatthe ductworkis sealedto preventair leakage Verify that the line voltage power leads are securely connected and the unit is properly grounded Check the condenser fan to make sure it turns freely V Verify the thermostat is wired correctly and installed in a proper location Make sure the low voltage wires are securely connected to the correct leads on the low voltage terminal strip Verify that the power supply branch circuit overcurrent protection is sized properly Installing Initial Refrigerant Charge IMPORTANT Before you start unit perform the following procedures to install the initial charge on units that are factory shipped with a nitrogen holding charge 1 Read all installation instructions first 2 Purge the nitrogen holding charge 3 Evacuate the unit to 350 500 microns 4 Allow the unit to r
27. omplete system s listed with AHRI Ast CERTIFIED US Liste NORDYNE COMPLETE COMFORT GENUINE VALUE 7091800 Replaces 7085580 Specifications amp illustrations subject to change without notice or incurring obligations O Fallon MO 7091800 Printed in U S A 04 10
28. r be operated without a filterinthe return air system Replace disposable filters with the same type and size e Donotattemptto add additional oilto motors unequipped with oil tubes The compressor is hermetically sealed at the factory and does not require lubrication COMPONENT FUNCTIONS High Pressure Switch HPS Optional A high pressure switch may be installed and located in the liquid line internal to the unit The switch is designed to protect the system when very high pressures occur during abnormal conditions Under normal conditions the switch is closed If the liquid pressure rises above 425 psig the switch will open and de energize the unit The switch will close again once the liquid pressure decreases to 360 psig Please note that the switch interrupts the thermostat inputs to the unit When the switch opens and then closes there may be a 5 minute short cycling delay before the unit will energize Low Pressure Switch LPS Optional A low pressure switch may be installed and located in the suction line internal to the unit The switch is designed to protect the compressor from a loss of charge Under normal conditions the switch is closed If the suction pressure falls below 5 psig the switch will open and de energize the unit The switch will close again once the suction pressure increases above 20 psig Please note that the switch interrupts the thermostat inputs to the unit When the switch opens and then clo
29. res are listed psig and all temperatures in F 2 Discharge temperatures greater than charted values indicate an undercharged system OUTDOOR TEMPERATURE 192 Temp Press 159 Temp Press Temp Press Temp Press Temp Press 67 69 194 165 208 163 196 170 210 175 212 173 178 214 168 224 167 226 172 239 178 228 177 242 218 244 181 231 181 234 184 Figure 14 Charging Chart for 3 Ton Units OUTDOOR TEMPERATURE Temp Press Temp Press 16 Figure 15 Charging Chart for 4 Ton Units REFRIGERANT CHARGING CHARTS CONTINUED OUTDOOR TEMPERATURE 161 Temp Press Temp Press Temp Press Temp Press Temp Press Temp Press Temp Press 166 172 179 226 182 228 230 232 173 235 182 188 265 191 Figure 16 Charging Chart for 5 Ton Units BLOWER PERFORMANCE Model Number External Static Pressure in WC 01 02 05 06 1480 1440 1390 1330 1270 1190 036 1270 1230 1190 1140 1080 1000 1840 1780 1730 1650 1580 1500 048 1700 1650 1590 1540 1470 1390 1800 1740 1680 1620 1540 1470 1660 1610 1560 1500 1430 1360
30. rille can be placed in the wall of a closet and the air ducted into the filter box through a boxed in area atthe closet floor level Figure 5 page 7 Verify the filter is readily accessible NOTE The return air box with grille and filter should not be located in heavy traffic areas like hallways or center of rooms A good spot is 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 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 joists 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 SINGLE DUCT APPLICATION SS SS X NN NN MULTIPLE DUCT APPLICATION Figure 4 Single amp Multiple Duct Applications NOTE In most installations it will be necessary to cuta 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 cuta hole for the collar on the return air box or for the insulated duct Set the box into the opening and fasten with screws or nails Install the filter and return air grille in the air box AUTOM
31. sary with filter of same dimensional size TROUBLESHOOTING If the unit fails to operate check the following Check the thermostat setting Make sure the system mode and temperature settings are correct Checkthe electrical panel for tripped circuit breakers Checkthe filters for dust accumulation e Checktheunitand make sure itis clean and not covered with grass or leaves e f the items above don t resolve your problems then call your nearest service technician INSTALLER INFORMATION IMPORTANT SAFETY INFORMATION Please readallinstructions 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 result in personal injury or death CAUTION indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury or property damage WARNING Shut off all electrical power to the unit before performing any maintenance or service on the system Failure to comply may result in personal injury or death A WARNING Unless noted otherwise in these instructions only factory authorized parts or accessory kits may be used with this product Improper installation service adjustment or maintenance may cause explosion f
32. ses there be 5 minute short cycling delay before the unit will energize REPLACEMENT PARTS Replacement parts are available through all Nordyne distributors Please have the complete model and serial number of the unit when ordering replacement parts ELECTRICAL Capacitors Temperature Limit Switches Thermostats Compressors Contactors Time Delay Relays Pressure Switches Transformers Relays MOTORS Blower Motor Fan Motor COMPONENTS Blower Assembly Fan Grille Cabinet Panels Filter Driers FIGURES amp TABLES Top View Electric Heater Power Supply Power Supply Low Voltage Supply 12 diameter Supply Duct Opening 14 diameter Return Duct Opening Back Duct View Control Blower Access Panel Access Panel Side View TE jus 7 1 3 4 Drain Connection lt 18 01 Y 3 2 5 29 12 13 Figure 11 Unit Dimensions Model No Length Return Diameter Supply Diameter P3RA L in in 036KA 35 02 1 1 2 2 4 2 Table 1 P3RA Physical Data 13 WIRING DIAGRAMS OLEO jeisouueu OL 0980LLZ ol 391815 ME AA si yeay ou ji eoejd eq snw FONVYO 15 HWJ8 5 ania MOTTI3A UONDBUUOD JojeoH Uld 6
33. talling the Return Air Assembly 6 Locating amp Installing the Supply Dampers 7 Condensate Drainage 8 Electrical Connections eese 8 Pre Electrical 8 Line Voltage eee 8 Overcurrent Protection sess 9 GOUGING emp 9 Unbalanced 3 Phase Supply Voltage 9 Thermostat Low Voltage Connections 10 Cooling 10 Heat Cool 10 Blower Speed nrnna 10 Standard Motor 3 4 amp 5 10 N Startup amp Adjustments esses 11 Pre Start 11 Installing Initial Refrigerant Charge 11 Start Up Procedure 11 System Cooling a ad tiet iter Fe eta nce 11 Short Cycle 11 Adjustment of Refrigerant Charge 11 Charge Verification for R 22 Units in AC Mode w Outdoor Temperatures above 55 11 Air Conditioner 12 Component Functions
34. te with full details is included with the Air Conditioner Carefully reviewthese 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 installation 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 Correcting wiring problems in the electrical circuit supplying the Air Conditioner Resetting circuit breakers or other switches e Adjusting or calibrating of thermostat INSTALLER INFORMATION Important Safety Information 4 General Information eese 5 Before You Install this 5 Locating the Air Conditioner 5 Minimum Clearance Requirements 5 Service Access Clearances 5 Clearances to Combustible Materials 5 Air Duct System sssssssssseeeeeeens 5 Air Conditioner Installation 6 Unpacking the Unit 6 Installing Return amp Supply Collars 6 SUPPI DUGU coner t tme iios 6 Return DUCE i e 6 Connecting the Return amp Supply Air Flexible BS rc 6 Locating amp Ins
35. times with five minutes between runs 1 Remove the bands from around the unit 2 Unfold the top and bottom cap flanges 3 Carefully remove the top cap and tube Installing Return amp Supply Air Collars The supply and return fittings are included with the unit and located in the supply duct They attach to the unit openings Figure 3 with a flange and bead arrangement and may be secured with sheet metal screws For easier access install fittings before positioning unit in final location See Figure 11 and Table 1 page 13 for air opening sizes Supply Duct 1 Position the supply duct collar so the edge of the unit opening fits between the flange and the bead Overlap the collar ends keeping the small screw holes underneath 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 N Duct Dimples Transition Duct Screws Air Return Air Figure 3 Return amp Supply Air Collars 4 Tap collar if necessary to ensure engagement with unit opening and install second screw 5 Tighten first screw 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 holes in the collar
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