CONDENSING UNIT - The Wholesale Warehouse
Contents
1. eric in the suction line Install one oil trap at the evaporator for a height difference of of more than 15 feet between indoor and A outdoor units Of 2 Insulation is necessary to prevent condensation from forming and dropping from the suction line Armflex or satisfactory equivalent with 3 8 min wall thickness is recommended In severe conditions hot high humidity areas 1 2 insulation may be required Insulation must be installed in a manner which protects tubing from damage and contamination Where possible drain as much residual compressor oil from existing systems lines and traps pay close attention to low areas where oil may collect NOTE If changing refrigerant types ensure the indoor coil and metering device is compat ible with the type of refrigerant being used otherwise the in door coil must be replaced Burying Refrigerant Lines If burying refrigerant lines can not be avoided use the following checklist 1 Insulate liquid and suction lines separately 2 Enclose all underground portions of the refrigerant lines in waterproof material conduit or pipe sealing the ends where tubing enters exits the enclosure 3 If the lines must pass under or through a concrete slab ensure lines are adequately protected and sealed Refrigerant Line Connections IMP2. Bulb Temperature T ee ER 10 13 17 20 23 26 em Le 2 E 7 gt j a pope ee eee 125 TS 5 1 l s 20 21 18 20 r RENE kOe a ae ee 5 Si Se es ee eee ee ee es eS eee ee EC ONE a RSS SR SN SE 5 EC RE LE ee ER SR SUPERHEAT FORMULA SUCT LINE TEMP SAT SUCT TEMP 6 Charge Verification WARNING REFRIGERANT UNDER PRESSURE Do not overcharge system with refrigerant Do not operate unit in a vacuum or at negative pres sure Failure to follow proper procedures may cause property damage personal injury or death Use refrigerant certified to AHRI standards Used refrigerant may cause compressor damage Most portable machines cannot clean used refrigerant to meet AHRI standards NOTICE l Violation of EPA regulations may result in fines or other penalties 4h CAUTION Operating the compressor with the suction valve closed will void the warranty and cause serious compressor damage Final Charge Adjustment The outdoor temperature must be 60 F or higher Set the room thermostat to COOL fan switch to AUTO and set the tem perature control well below room temperature Purge gauge lines Connect service gauge manifold to base valve service ports Run the system on low stage for two stage units for 10 minutes to allow pressures to stabilize then check subcooling and or superheat as detailed in the fol lowing sections Superheat Suct Li
3. Located Thermostat Air Flow Unbalanced Relocate Thermostat Readjust Air Volume Dampers System Undersized Refigure Cooling Load Broken Internal Parts Replace Compressor Broken Valves Test Compressor Efficiency Inefficient Compressor Oversized Expansion Valve Replace Valve Remove Restriction or Replace Expansion Device Undersized Expansion Valve Expansion Valve Bulb Loose Replace Valve Replace Valve Tighten Bulb Bracket Inoperative Expansion Valve Check Valve Operation Loose Hold down Bolts Tighten Bolts Faulty Reversing Valve Replace Valve or Solenoid Faulty Defrost Control Test Control Faulty Defrost Thermostat Test Defrost Thermostat Cooling or Heating Cycle Heat Pump Check Flowrator amp Seat or Replace Flowrator Heating Cycle Only Heat Pump For detailed service information refer to the Remote Condensing Unit Service manual require a Hard Start Kit NOTICE Units with rotary or reciprocating compressors and non bleed TXV s 10 THIS PAGE LEFT INTENTIONALLY BLANK NOTE SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE Goodman Manufacturing Company L P 5151 San Felipe Suite 500 Houston TX 77056 www goodmanmfg com O 2005 2011 Goodman Manufacturing Company L P 12
4. outdoor units with TXVs superheat should be 2 5 at 4 6 from the compressor Make final charge adjustments in the cooling cycle SATURATED SUCTION PRESSURE SATURATED LIQUID PRESSURE TEMPERATURE CHART TEMPERATURE CHART SATURATED SUCTION SATURATED LIQUID SUCTION PRESSURE TEMPERATURE F LIQUID PRESSURE TEMPERATURE fF e e mon Pse O R2 Raoa Troubleshooting Information System Operating Pressures Complaint No Cooling Unsatisfactory Cooling Heating POSSIBLE CAUSE DOTS IN ANALYSIS GUIDE INDICATE POSSIBLE CAUSE SYMPTOM System will not start Compressor will not start fan runs Comp and Cond Fan will not start Evaporator fan will not start Condenser fan will not start Compressor runs goes off on overload Compressor cycles on overload System runs continuously little cooling htg Too cool and then too warm Not cool enough on warm days Certain areas too cool others too warm Compressor is noisy System runs blows cold air in heating Unit will not terminate defrost Unit will not defrost Low suction pressure Low head pressure High suction pressure High head pressure Test Method Remedy Test Voltage nspect Fuse Size amp Type Unbalanced Power 3PH Test Voltage Loose Connection nspect Connection Tighten Shorted or Broken Wires Open Fan Overload Test Circuits With Ohmmeter Test Continuity of Overload Faulty Thermostat Test Continuit
5. silicon based caulk RTV or a vibration damping material Avoid suspending refrigerant tubing from joists and studs with rigid wire or straps that would come in contact with the tubing Use an insulated or suspension type hanger Keep both lines separate and always insulate the suction line These sizes are recommended for line lengths of 79 feet or less to obtain optimum performance For alternate line sizing options or runs of more than 79 feet refer to Remote Cooling Service Manual or TP 107 Long Line Set Application R 410A or contact your distributor for assistance RECOMMENDED INTERCONNECTING TUBING Ft 2540 57 Line Diameter In OD Liq Liq 3 8 3 8 3 8 3 8 3 8 11 8 3 8 11 8 11 8 3 8 11 8 Lines greater than 79 feet in length or vertical elevation changes more than 50 feet refer to the Remote Cooling Service Manual or contact your distributor for assistance 3 8 3 8 Liquid Line D Ss Suction Line l Mounting the evaporator coil above the condensing unit will require an inverted QU AGA loop in the suction line adjacent or near the connection to the evaporator The top of the loop must be slightly higher than the top of the coil Mounting the condensing unit above the evaporator coil will require an oil trap
6. the top of the stem is 1 8 from the retainer To avoid loss of refrigerant DO NOT apply pressure to the retainer When open ing valves without a retainer remove service valve cap and in sert a hex wrench into the valve stem and back out the stem by turning the hex wrench counterclockwise Open the valve until it contacts the rolled lip of the valve body NOTE These are not back seating valves It is not necessary to force the stem tightly against the rolled lip After the refrigerant charge has bled into the system open the liquid service valve The service valve cap is the secondary seal for the valve and must be properly tightened to prevent leaks Make sure cap is clean and apply refrigerant oil to threads and sealing surface on inside of cap Tighten cap finger tight and then tighten additional 1 6 of a turn 1 wrench flat or to the following specification to properly seat the sealing surfaces 1 3 8 valve to 5 10 in lbs 2 5 8 valve to 5 20 in lbs 3 3 4 valve to 5 20 in lbs 4 7 8 valve to 5 20 in lbs Do not introduce liquid refrigerant from the cylinder into the crankcase of the compressor as this may damage the compressor 1 Break vacuum by fully opening liquid and suction base valves 2 Set thermostat to call for cooling Check indoor and out door fan operation and allow system to stabilize for 10 minutes for fixed orifices and 20 minutes for expansion valves SYSTEM SUPERHEAT Outdoor Dry
7. water or a wet cloth to prevent overheating of the service valve 4 Ensure the filter drier paint finish is intact after brazing If the paint of the steel filter drier has been burned or chipped repaint or treat with a rust preventative This is especially important on suction line filter driers which are continu ally wet when the unit is operating NOTE Be careful not to kink or dent refrigerant lines Kinked or dented lines will cause poor performance or compressor damage Do NOT make final refrigerant line connection until plugs are removed from refrigerant tubing NOTE Before brazing verify indoor piston size by checking the piston kit chart packaged with indoor unit Leak Testing Nitrogen or Nitrogen Traced WARNING To avoid the risk of fire or explosion never use oxygen high pressure air or flammable gases for leak testing of a refrigeration system WARNING To avoid possible explosion the line from the nitrogen cylinder must include a pressure regulator and a pressure relief valve The pressure relief valve must be set to open at no more than 150 psig Pressure test the system using dry nitrogen and soapy water to locate leaks If you wish to use a leak detector charge the system to 10 psi using the appropriate refrigerant then use nitrogen to finish charging the system to working pressure then apply the detector to suspect areas If leaks are found repair them After repair repeat the
8. CONDENSING UNIT HEAT PUMP INSTALLATION amp SERVICE REFERENCE Important Safety Instructions The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards Itis the owner s and installer s responsibility to read and comply with all safety information and instructions accompanying these symbols Failure to heed safety information increases the risk of personal injury property damage and or product damage WARNING Ne HIGH VOLTAGE a Disconnect ALL power before servicing Multiple power sources may be present Failure to do so may cause property damage ersonal injury or death WARNING Installation and repair of this unit should be performed ONLY by individuals meeting the requirements of an entry level technician as specified by the Air Conditioning Heating and Refrigeration Institute AHRI Attempting to install or repair this unit without such background may result in product damage personal injury or death CAUTION Scroll equipped units should never be used to evacuate the air conditioning system Vacuums this low can cause internal electrical arcing resulting in a damaged or failed compressor Important Note to the Owner regarding Prod uct Warranty Your warranty certificate is supplied as a separate document with the unit installed by your contractor Read the limited warranty certificate carefully to determine what is a
9. ORTANT To avoid overheating the service valve TXV valve or filter drier while brazing wrap the component with a wet rag or use a thermal heat trap compound Be sure to follow the manufacturer s instruction when using the heat trap compound Note Remove Schrader valves from service valves before brazing tubes to the valves Use a brazing alloy of 2 minimum silver content Do not use flux Torch heat required to braze tubes of various sizes is proportional to the size of the tube Tubes of smaller size require less heat to bring the tube to brazing temperature before adding brazing alloy Applying too much heat to any tube can melt the tube Service personnel must use the appropriate heat level for the size of the tube being brazed Note The use of a heat shield when brazing is recommended to avoid burning the serial plate or the finish on the unit 1 The ends ofthe refrigerant lines must be cut square de burred cleaned and be round and free from nicks or dents Any other condition increases the chance of a refrigerant leak 2 Sweep the refrigerant line with nitrogen or inert gas dur ing brazing to prevent the formation of copper oxide in side the refrigerant lines The POE oils used in R 410A applications will clean any copper oxide present from the inside of the refrigerant lines and spread it throughout the system This may cause a blockage or failure of the me tering device 3 After brazing quench the joints with
10. PTIONAL COLOR CODES R RED Y YELLOW BL BLUE Thermostat with Low Voltage Wires to Heat Pump Unit NOTE For two stage units refer to the Installation Instructions supplied with the variable speed indoor units for field wiring connections System Start Up NOTE Units with crankcase heaters should have high voltage power energized for 24 hours prior to start up Heat pumps are equipped with a time temperature defrost control with field selectable defrost intervals of 30 60 or 90 minutes This setting should be adjusted at this time if needed The defrost control also has SmartShift technology which delays compressor operation at defrost initiation and termination If disabling this function is desired move the jumper from DLY to NORM on the defrost control Adequate refrigerant charge for a matching evaporator and 15 feet lineset is supplied with the condensing unit If line set exceeds 15 feet in length refrigerant should be added at 6 ounces per foot of liquid line Open the suction service valve first If the liquid service valve is opened first oil from the compressor may be drawn into the indoor coil TXV restricting refrigerant flow and affecting opera tion of the system AA CAUTION POSSIBLE REFRIGERANT LEAK To avoid a possible refrigerant leak open the service valves until the top of the stem is 1 8 from the retainer When opening valves with retainers open each valve only until
11. This unit can be located at ground floor level or on flat roofs At ground floor level the unit must be on a solid level foundation that will not shift or settle To reduce the possibility of sound transmission the foundation slab should not be in contact with or be an integral part of the building foundation Ensure the foundation is sufficient to support the unit A concrete slab raised above ground level provides a suitable base Rooftop Installations If it is necessary to install this unit on a roof structure ensure the roof structure can support the weight and that proper con sideration is given to the weather tight integrity of the roof Since the unit can vibrate during operation sound vibration transmis sion should be considered when installing the unit Vibration absorbing pads or springs can be installed between the con densing unit legs or frame and the roof mounting assembly to reduce noise vibration NOTE These units require special location consideration in areas of heavy snow accumulation and or areas with prolonged continuous subfreezing temperatures Heat pump unit bases have cutouts under the outdoor coil that permit drainage of frost accumulation Situate the unit to permit free unobstructed drainage of the defrost water and ice In more severe weather locations it is recommended that the unit be elevated to allow unobstructed drainage and air flow The following elevation minimums are recommended Design Temperat
12. dry place Never use a cy linder as a platform ora roller WARNING To avoid possible explosion use only returnable not disposable service cylinders when removing refrig erant from a system Ensure the cylinder is free of damage which could lead to a leak or explosion Ensure the hydrostatic test date does not exceed 5 years id the pressure rating meets or exceeds 400 S When in doubt do not use cylinder Refrigerant Lines CAUTION The compressor POE oil for R 410A units is extremely susceptible to moisture absorption and could cause compressor failure Do not leave system open to atmos phere any longer than necessary for installation Use only refrigerant grade dehydrated and sealed copper tub ing to connect the condensing unit with the indoor evaporator After cutting the tubing install plugs to keep refrigerant tubing clean and dry prior to and during installation Tubing should always be cut square keeping ends round and free from burrs Clean the tubing to prevent contamination Do NOT let refrigerant lines come in direct contact with plumb ing ductwork floor joists wall studs floors and walls When running refrigerant lines through a foundation or wall openings should allow for sound and vibration absorbing material to be placed or installed between tubing and foundation Any gap between foundation or wall and refrigerant lines should be filled with a pliable
13. insulated for best pos sible readings Use liquid line temperature to determine sub cooling and vapor temperature to determine super heat NOTE An optional method is to locate the thermometer at the suction line service valve Ensure the thermometer makes adequate contact and is insulated for best pos sible readings 2 Check subcooling and superheat Systems with TXV ap plication should have a subcooling of 5 to 9 F and super heat of 7 to 9 F a If subcooling and superheat are low adjust TXV to 7 to 9 F superheat then check subcooling NOTE To adjust superheat turn the valve stem clockwise to increase and counter clockwise to de crease b If subcooling is low and superheat is high add charge to raise subcooling to 5 to 9 F then check super heat c If subcooling and superheat are high adjust TXV valve to 7 to 9 F superheat then check subcooling d If subcooling is high and superheat is low adjust TXV valve to 7 to 9 F superheat and remove charge to lower the subcooling to 5 to 9 F NOTE Do NOT adjust the charge based on suction pres sure unless there is a gross undercharge NOTE Check the Schrader ports for leaks and tighten valve cores if necessary Install caps finger tight Heat Pump Heating Cycle The proper method of charging a heat pump in the heat mode is by weight with the additional charge adjustments for line size line length and other system components For best results on
14. ional method is to locate the thermometer at the suction line service valve Ensure the thermometer makes adequate contact and is insulated for best pos sible readings 2 Check subcooling and superheat Systems with TXV ap plication should have a subcooling of 5 to 9 F and super heat of 7 to 9 F a If subcooling and superheat are low adjust TXV to 7 to 9 F superheat then check subcooling NOTE To adjust superheat turn the valve stem clockwise to increase and counter clockwise to de crease b Ifsubcooling is low and superheat is high add charge to raise subcooling to 5 to 9 F then check super heat c If subcooling and superheat are high adjust TXV valve to 7 to 9 F superheat then check subcooling d If subcooling is high and superheat is low adjust TXV valve to 7 to 9 F superheat and remove charge to lower the subcooling to 5 to 9 F NOTE Do NOT adjust the charge based on suction pres sure unless there is a gross undercharge Two Speed Application Energize the unit in low stage cooling for 10 minutes until refrigerant pressures stabilize Follow the guidelines and methods below to check the unit s operation and ensure that refrigerant charge is within limits Charge the unit on low stage 1 Forbest results temporarily install a thermometer on the liquid line at the liquid line service valve and 4 6 from the compressor on the suction line Ensure the thermometer makes adequate contact and is
15. it or air handler the system must be manufacturer approved and Air Conditioning Heating and Refrigeration Institute AHRI matched NOTE Installation of unmatched systems is not allowed Operating the unit in a structure that is not complete either as part of new construction or renovation will void the warranty Amana is a registered trademark of Maytag Corporation or its related companies and is used under license to Goodman Company L P Houston TX All rights reserved Installation Clearances Special consideration must be given to location of the con densing unit s in regard to structures obstructions other units and any all other factors that may interfere with air circulation Where possible the top of the unit should be completely unob structed however if vertical conditions require placement be neath an obstruction there should be a minimum of 60 inches between the top of the unit and the obstruction s The specified dimensions meet requirements for air circulation only Consult all appropriate regulatory codes prior to deter mining final clearances Another important consideration in selecting a location for the unit s is the angle to obstructions Either side adjacent the valves can be placed toward the structure provided the side away from the structure maintains minimum service clearance Corner installations are strongly discouraged L NOT RECOMMENDED A BJ C AA
16. nd is not covered and keep the warranty certificate in a safe place If you are unable to locate the warranty certificate please contact your installing contractor or contact customer service 877 254 4729 to obtain a copy IMPORTANT To receive the 10 Year Parts Limited Warranty online registration must be completed within 60 days of instal lation Online registration is not required in California or Que bec Complete warranty details available from your local dealer or for Goodman brand products visit www goodmanmfg com and for Amana brand products visit www amana hac com 2005 2011 Goodman Manufacturing Company L P 5151 San Felipe Suite 500 Houston TX 77056 www goodmanmfg com or www amana hac com P N 10 259N Date July 2011 IMPORTANT To register your Goodman brand unit go to www goodmanmfg com and click Warranty Registration Complete registration as prompted To register your Amana brand unit go to www amana hac com and click Warranty Registration Complete registration as prompted Product limited warranty certificates for models currently in production can be viewed at www goodmanmfg com or www amana hac com If your model is not currently in pro duction or does not appear on the website please contact your installing contractor or contact customer service 877 254 4729 to obtain a copy of your warranty certificate Each product overview page contains a Product Warranty link by clicki
17. ne Temp Sat Suct Temp Subcooling Sat Liquid Temp Liquid Line Temp CAUTION To prevent personal injury carefully connect and disconnect manifold gauge hoses Escaping liquid refrigerant can cause burns Do not vent refrigerant into the atmosphere Recover all refrigerant during system repair and before final unit disposal Fixed Orifice 1 For best results temporarily install a thermometer 4 6 from the compressor on the suction line Ensure the ther mometer makes adequate contact and is insulated for best possible readings Use vapor temperature to deter mine superheat NOTE An optional method is to locate the thermometer at the suction line service valve Ensure the thermometer makes adequate contact and is insulated for best pos sible readings 2 Refer to the superheat table provided for proper system superheat Add charge to lower superheat or recover charge to raise superheat Expansion Valve System NOTE AVPTC air handlers have a non adjustable TXV Charge unit match with this air handler by subcooling only Single Speed Application 1 Forbest results temporarily install a thermometer on the liquid line at the liquid line service valve and 4 6 from the compressor on the suction line Ensure the thermometer makes adequate contact and is insulated for best pos sible readings Use liquid line temperature to determine sub cooling and vapor temperature to determine super heat NOTE An opt
18. ng on it you will be able to view the limited warranty coverage for that specific product To view warranty registra tion information click on the Product Warranty text on the left navigation panel on the home page of each website The Online Product Registration pages are located in this same section Shipping Inspection Always keep the unit upright laying the unit on its side or top may cause equipment damage Shipping damage and subse quent investigation is the responsibility of the carrier Verify the model number specifications electrical characteristics and accessories are correct prior to installation The distribu tor or manufacturer will not accept claims from dealers for trans portation damage or installation of incorrectly shipped units Codes amp Regulations This product is designed and manufactured to comply with national codes Installation in accordance with such codes and or prevailing local codes regulations is the responsibility of the installer The manufacturer assumes no responsibility for equip ment installed in violation of any codes or regulations The United States Environmental Protection Agency EPA has issued various regulations regarding the introduc tion and disposal of refrigerants Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines Should you have any questions please contact the local office of the EPA If replacing a condensing un
19. outdoor section for the control wiring Cooling only units require 25VA minimum and heat pump units require 40VA minimum Low voltage wiring for two stage units de pends on the thermostat used and the number of control wires between the indoor unit and the condensing unit Route con trol wires through the low voltage port and terminate in accor dance with the wiring diagram provided inside the control panel cover SYSTEM COMPOSITE DIAGRAM T PUMPS 10 KW amp BELOW HEAT PUMP o isca 7 WIRE 68990 Poo oog INDOOR UNIT ES R f BEARD E a E A E E FT B L H ul gorem GREEN WHITE BLUE OPTIONAL OUTDOOR THERMOSTAT CLOSE ON TEMPERATURE FALL 18 GA 6 WIRE NEEDED WHEN OT IS USED SYSTEM COMPOSITE DIAGRAM HEAT PUMPS ABOVE 10 KW HEAT PUMP TYPICAL HE p SIGA TIRE OQO OO OO ole INDOOR UNIT more moz ro OPTIONAL OUTDOOR THERMOSTAT CLOSE ON TEMPERATURE FALL 18 GA 7 WIRE NEEDED WHEN TWO OTS ARE USED NOTES 1 OUTDOOR THERMOSTAT OT 1 SHOULD BE THE FIRST TO CLOSE AND THE LAST TO OPEN 2 CONNECT WHITE AND BROWN WIRES FROM AIR HANDLER TOGETHER IF OT 2 IS NOT USED 3 REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT 4 TERMINAL BLOCK MARKINGS ARE FOR AMANA AIRHANDLERS NOMENCLATURE OT OUTDOOR THERMOSTAT OPTIONAL EHR EMERGENCY HEAT RELAY O
20. pressure test If no leaks exist proceed to system evacuation System Evacuation Condensing unit liquid and suction valves are closed to contain the charge within the unit The unit is shipped with the valve stems closed and caps installed Do not open valves until the system is evacuated WARNING REFRIGERANT UNDER PRESSURE Failure to follow proper procedures may cause property damage personal injury or death NOTE Scroll compressors should never be used to evacuate or pump down a heat pump or air conditioning system CAUTION Prolonged operation at suction pressures less than 20 psig for more than 5 seconds will result in overheating of the scrolls and permanent damage to the scroll tips drive bearings and internal seal 1 Connect the vacuum pump with 250 micron capability to the service valves 2 Evacuate the system to 250 microns or less using suc tion and liquid service valves Using both valves is nec essary aS some compressors create a mechanical seal separating the sides of the system 3 Close pump valve and hold vacuum for 10 minutes Typi cally pressure will rise during this period 5000 4500 4000 LEAK S 3500 PRESENT 3000 2500 VACUUM IN MICRONS 2000 CONDENSIBLES OR SMALL 1 ae LEAK PRESENT 1000 NO LEAKS 309 NO CONDENSIBLES MINUTES e Ifthe pressure rises to 1000 microns or less and remains steady the system i
21. s considered leak free proceed to startup f pressure rises above 1000 microns but holds steady below 2000 microns moisture and or noncondensibles may be present or the system may have a small leak Return to step 2 If the same result is encountered check for leaks as previously indicated and repair as necessary then repeat evacuation e f pressure rises above 2000 microns a leak is present Check for leaks as previously indicated and repair as nec essary then repeat evacuation Electrical Connections WARNING HIGH VOLTAGE Disconnect ALL power before servicing Multiple power sources may be present Failure to do so may cause property damage personal injury or death due to electric shock Wiring must conform with NEC or CEC and all local codes Undersized wires could cause poar equipment performance equipment damage or fire WARNING To avoid the risk of fire or equipment damage use copper conductors NOTICE Units with reciprocating or rotary compressors and non bleed TXV s require a Hard Start Kit The condensing unit rating plate lists pertinent electrical data necessary for proper electrical service and overcurrent protec tion Wires should be sized to limit voltage drop to 2 max from the main breaker or fuse panel to the condensing unit Consult the NEC CEC and all local codes to determine the correct wire gauge and length Local codes often require a disconnect switch located near the uni
22. t do not install the switch on the unit Refer to the installa tion instructions supplied with the indoor furnace air handler for specific wiring connections and indoor unit configuration Like wise consult the instructions packaged with the thermostat for mounting and location information Overcurrent Protection The following overcurrent protection devices are approved for use e Time delay fuses e HACR type circuit breakers These devices have sufficient time delay to permit the motor compressor to start and accelerate its load Three Phase Compressor Rotation CAUTION Use care when handling scroll compressors Dome temp eratures could be hot Three phase compressors are power phase dependent and can rotate in either direction Verify proper rotation for three phase compressors by ensuring the suction pressure drops and discharge pressure rises when the compressor is energized NOTE When operated in re verse a three phase scroll compressors is noisier and its cur rent draw substantially reduced compared to marked values To correct disconnect power and switch any two leads at the unit contactor and re observe High Voltage Connections Route power supply and ground wires through the high voltage port and terminate in accordance with the wiring diagram pro vided inside the control panel cover Low Voltage Connections The indoor transformer must supply 24 volt AC low voltage power to the
23. ure 15 and above Suggested Minimum Elevation 2 1 2 5 to 14 12 Safe Refrigerant Handling While these items will not cover every conceivable situation they should serve as a useful guide WARNING To avoid o injury explosion or death practice safe handling of refrigerants WARNING Refrigerants are heavier than air They can push out the oxygen in your lungs or in any enclosed space To avoid possible difficulty in breathing or death Never purge refrigerant into an enclosed room or space By law all refrigerants must be reclaimed If an indoor leak is suspected thoroughly ventilate the area before beginning work Liquid refrigerant can be very cold To avoid possible frostbite or blindness avoid contact and wear gloves and goggles If liquid refrigerant does contact your skin or eyes seek medical help immediately Always follow EPA regulations Never burn refrigerant as poisonous gas will be produced WARNING To avoid possible explosion Never apply flame or steam to a refrigerant cylinder If you must heat a cylinder for faster charging partially immerse it in warm water Never fill a cylinder more than 80 full of liquid re frigerant Never add anything other than R 22 to an R 22 cy linder or R 410A to an R 410A cylinder The service equipment used must be listed or certified for the type of refrigerant used Store cylinders in a cool
24. y of Thermostat amp Wiring Faulty Transformer Check Control Circuit with Voltmeter Shorted or Open Capacitor Internal Compressor Overload Open est Capacitor Test Continuity of Overload Shorted or Grounded Compressor Test Motor Windings Compressor Stuck Use Test Cord Faulty Compressor Contactor Faulty Fan Relay Test Continuity of Coil amp Contacts Test Continuity of Coil And Contacts Open Control Circuit Test Control Circuit with Voltmeter Low Voltage Test Voltage Faulty Evap Fan Motor Shorted or Grounded Fan Motor Repair or Replace Test Motor Windings Improper Cooling Anticipator Check Resistance of Anticipator Shortage of Refrigerant Test For Leaks Add Refrigerant Restricted Liquid Line Open Element or Limit on Elec Heater Remove Restriction Replace Restricted Part Test Heater Element and Controls Dirty Air Filter Inspect Filter Clean or Replace Dirty Indoor Coil Not enough air across Indoor Coil Inspect Coil Clean Check Blower Speed Duct Static Press Filter Too much air across Indoor Coil Reduce Blower Speed Overcharge of Refrigerant Recover Part of Charge Dirty Outdoor Coil Noncondensibles Inspect Coil Clean Recover Charge Evacuate Recharge Recirculation of Condensing Air Remove Obstruction to Air Flow Infiltration of Outdoor Air Check Windows Doors Vent Fans Etc Improperly
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