Installation Manual ES6BF
Contents
1. 5 19 5 se Play aq Aew 129 95 S 195 J pun y you Aew 195 aj9AQ 11045 Z Syy 995 Z 55210 2 0 HZ 0 9 JUaIINDIBAO 104 GOL 16 S10 ONPUOD 104 OSL ap xne sed uaau N 2 0 061 ey 5 UO JON 2 1 s p 2 Z asn Ajddns 104 2 JUBA 1 1 L SLON 1010 100P NO IND ZH 09 aseud 1022 802 11 Figure 8 Wiring Diagram for 4 Models with ECM Motor INSTALLATION PERFORMANCE CHECKLIST INSTALL2. Verify line voltage power leads are securely connected and the unit is properly grounded y Verify low voltage wires are securely connected to the correct leads on the low voltage terminal strip Verify power supply branch circuit overcurrent protection is sized properly y Verify the thermostat is wired correctly Start Up Procedures The thermostat s function mode should be setto OFF and the fan mode should be set to AUTO Close all electrical disconnects to energize the system Air Circulation Indoor Blower 1 Set the thermostat system mode on OFF and the fan mode to ON 2 Verify the blower runs continuously Check the air delivery at the supply registers and adjust register openings for balanced air distribution If insufficient air is detected examine ductwork for leaks or obstructions 3 Set the thermostat fan mode to AUTO and verify the blower stops running System Cooling 1 Set the thermostat s system mode to COOL and the fan mode to AUTO Gradually lower the thermostat temperature setpoint below room temperature and verify the outdoor unit and indoor blower energize 2 Verify blower wheel is spinning in direction indicated by arrow Feel the air being circulated by the indoor blower and verify that it is cooler than ambient temperature Listen for any unusual noises If unusual sounds occur determine the source of the noise and correct as necessary 3 Verify HI and LO refrigerant pressures 4 Allow the sy
3. Connecting Refrigerant Tubing Between the Indoor amp Outdoor Unit ELECTRICAL WIRING Pre Electrical Checklist Line Voltage Grounding Thermostat Connections START UP amp ADJUSTMENTS Pre Start Check List Start Up Procedures Air Circulation Indoor Blower System Cooling System Heating optional AIR CONDITIONER MAINTENANCE REFRIGERANT CHARGING Charging the Unit in AC mode Application Notes for Using Charging Charts Figure 2 Charging Chart for 2 Ton Units Figure 3 Charging Chart for 2 5 Ton Units Figure 4 Charging Chart for 3 Ton Units Figure 5 Charging Chart for 3 5 Ton Units Figure 6 Charging Chart for 4 Ton Units COMPONENT FUNCTIONS ELECTRICAL DIAGRAMS Figure 7 Wiring Diagram for 2 2 5 3 3 5 Ton Models with PSC Motor Figure 8 Wiring Diagram for 4 Ton Models with ECM Motor INSTALLATION PERFORMANCE CHECKLIST 12 REPLACEMENT PARTS IMPORTANT SAFETY INFORMATION INSTALLER Please read all instructions 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 WARNING
4. electrical box of the outdoor unit The installer should become familiar with the wiring diagram before making any electrical connections to the outdoor unit Anelectrical disconnect must be located within sight of and readily accessible to the unit This switch shall be capable of electrically de energizing the outdoor 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 must be in compliance with information listed on the outdoor unit data label Any other wiring methods must be acceptable to authority having jurisdiction The outdoor unit requires both power and control circuit electrical connections Refer to the wiring diagram schematic for identification and location of outdoor unit field wiring interfaces See Figure 7 amp Figure 8 Make all electrical connections in accordance with all applicable codes and ordinances 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 Provide power supply for the unit in accordance with the unit wiring diagram and the unit rating plate Connect the line voltage leads to the terminals on the contactor inside the
5. 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 fire electrical shock or other hazardous conditions which may result in personal injury or property damage A WARNING S6BF Split System Air Conditioners are shipped charged with R410A refrigerant and ready for installation If repairs make it necessary for evacuation and charging it should only be attempted by qualified trained personnel thoroughly familiar with this equipment Under no circumstances should the owner attempt to install and or service this equipment Failure to comply with this warning could result in property damage personal injury or death A CAUTION This unit uses refrigerant R 410A DO NOT use any other refrigerant in this unit Use of another refrigerant will damage the unit 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 inst
6. mounting pad Figure 1 must be provided and separate from the building foundation The pad must be level and strong enough to support the weight of the unit The slab height must be a minimum of 2 5 cm above grade and with adequate drainage Roof Mount The method of mounting should be designed so that it does not overload roof structures or transmit noise to the interior of the structure The roof must be structurally capable of handling the weight of the unit Full perimeter support is required under the unit Support must be made of weather resistant materials and installed prior to unit installation The support must be built to raise the unit 6 above the roof 6 from Building or Structure 24 for Service Access ecc 12 or 18 See Note DO NOT OBSTRUCT TOP OF UN 12 or 18 See Note NOTE Units require full perimeter clearances Installer must maintain 18 between two units or 12 between single unit and structure y 2 Mounting Pad SE Figure 1 Clearance Requirements Connecting Refrigerant Tubing Between the Indoor amp Outdoor Unit A CAUTION When servicing cover or seal openings to minimize the exposure of the refrigerant system to air to prevent accumulation of moisture and other contaminants After outdoor and indoor unit placement has been determined route refrigerant tubing between the equipmentin accordance with sound installation prac
7. ANSI NFPA 70 and with applicable local codes having jurisdiction The low voltage wires must be properly connected to the units low voltage terminal block Recommended wire gauge and wire lengths for typical thermostat connections are listed in Table 2 The thermostat 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 heatfrom 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 and installation information COPPER WIRE SIZE AWG 1 VOLTAGE DROP SUPPLY WIRE LENGTH FEET SUPPLY CIRCUIT AMPACITY 150 100 ae 09 5 0 2 N Wire Size based on N E C for 60 type copper conductors Table 1 Copper Wire Size Table 2 Thermostat Wire Gauge START UP amp ADJUSTMENTS Pre Start Check List Verify the indoor unit is level and allows proper condensate drainage Verify the outdoor coil and top of the unit are free from obstructions and debris and all equipment access control panels are in place y Verify air filters are cleaned and properly installed Verify duct work is sealed to prevent air leakage
8. ATION ADDRESS CITY STATE UNIT MODEL UNIT SERIAL INSTALLER NAME CITY Unit Installed Minimum clearances shown on page 3 Has the owner s information been N reviewed with the customer O jorearicase Stage 1 Liquid Pressure high side Stage 1 Suction Pressure low side PROPOSITION 65 WARNING WARNING This productcontains chemicals known to the state of California to cause cancer WARNING This productcontains chemicals known to the state of California to cause birth defects or other reproductive harm CERTIFIED www ahridirectory org 05 Intertek Unitary Small AC AHRI Standard 210 240 Certification applies only when the complete system is listed with AHRI We Encourage Professionalism i Clan So YOUR ENVIRONMENT OUR EXPERTISE v MEMBER COMPANY wud ENCE Through Technician Certification by NATE ELECTRICAL SYSTEM YES YES Electrical connections tight Line voltage polarity correct 2 Rated Voltage L1 L2 Volts L1 L3 Volts L2 L3 Volts Avg Volts Max deviation of voltage from avg volts Volt imbalance Blower Motor HP Sheave Setting YES YES Has the thermostat been calibrated Is the thermostat level Is the heat anticipator setting correct If Applicable YES REPLACEMENT PARTS Replacement parts are availab
9. SPLIT SYSTEM AIR CONDITIONER 16 SEER SINGLE PHASE MODELS INSTALLATION INSTRUCTIONS S6BF 024 030 036 042 amp 048 2 2 5 3 3 5 amp 4 TON SERIES IMPORTANT ATTENTION INSTALLERS It is your responsibility to know this product better than your customer This includes being able to install the product according to strict safety guidelines and instructing the customer on howto operate and maintain the equipment for the life of the product Safety should always be the deciding factor when installing this product and using common sense plays an important role as well Pay attention to all safety warnings and any other special notes highlighted in the manual Improper installation of the furnace or failure to follow safety warnings could result in serious injury death or property damage 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 Return these instructions to the customer s package for future reference DO NOT DESTROY PLEASE READ CAREFULLY amp KEEP IN A SAFE PLACE FOR FUTURE REFERENCE IMPORTANT SAFETY INFORMATION AIR CONDITIONER INSTALLATION General Information Before You Install this Unit Locating the Air Conditioner Packaging Removal Ground Level Roof Mount
10. aller 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 building codes and the National Electrical Code ANSI Cl for special installation requirements All electrical wiring must be completed in accordance with local state and national codes and regulations and with the National Electric Code ANSI NFPA 70 or in Canada the Canadian Electric Code Part 1 CSA 22 1 This equipment contains liquid and gaseous refrigerant under high pressure DO NOT USE ANY PORTION OF THE CHARGE FOR PURGING OR LEAK TESTING Installation or servicing should only be performed by qualified trained personnel thoroughly familiar with this type equipment Fully annealed refrigerant grade copper tubing should be used when installing the system Refrigerant suction line tubing should be fully insulated Installation of equipment may require brazing operations Installer must comply with safety codes and wear appropriate safety equipment safety glasses work gloves fire extinguisher etc when performing brazing operations 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 Refrigerant and electri
11. and outdoor coil at the beginning of each cooling season Remove any debris Clean the outdoor coil and louvers as necessary using a mild 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 never be operated without a filterin the return air system Replace disposable filters with the same type and size Donotattemptto add additional oil to motors unequipped with oil tubes The compressor is hermetically sealed at the factory and does not require lubrication REFRIGERANT CHARGING A WARNING S6BF Split System Air Conditioners are shipped charged with R410A refrigerant and ready for installation If repairs make it necessary for evacuation and charging it should only be attempted by qualified trained personnel thoroughly familiar with this equipment Under no circumstances should the owner attempt to install and or service this equipment Failure to comply with this warning could result in property damage personal injury or death After refrigerant line connections are completed it is required that you leak check and evacuate the indoor section and all line connections using proper methods before finalizing the full system refrigerant charge Refrigerant charging charts are applicable only to matched assemblies of NORDYNE equipmentand listed airflows for the indoor coil R
12. cal line should be routed through suitably waterproofed openings to prevent water from leaking into the structure AIR CONDITIONER INSTALLATION General Information The S6BF series air conditioner is designed only for outdoor rooftop or ground level installations This unit has been tested for capacity and efficiency in accordance with AHRI 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 cooling load of the area to be conditioned must be calculated anda system of the proper capacity selected It is recommended that the area to be conditioned be completely insulated and vapor sealed Check the electrical supply and verify the power supply is adequate for unit operation The system must be wired and provided with circuit protection in accordance with local building codes If there is any question concerning the power supply contact the local power company The indoor section air handler furnace etc should be installed before routing the refrigerant tubing Refer to the in
13. control compartment Use only copper wire for the line voltage power supply to this unit as listed in Table 1 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 the NEC ANSI NFPA 70 applicable local codes and the instructions provided with the equipment 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 Electrical Code ANSI NFPA 70 or the CSA C22 1 Electrical Code Use the grounding lug provided in the control box for grounding the unit Thermostat Connections Thermostat connections should be made in accordance with the instructions supplied with the thermostat and the indoor equipment The outdoor unit is designed to operate from a 24 VAC Class control circuit The control circuit wiring must comply with the current provisions of the NEC
14. ct Models A low pressure switch is factory installed and located in the suction line internal to the outdoor 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 then the switch will open and de energize the outdoor 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 closes there will be a 5 minute short cycling delay before the outdoor unit will energize ELECTRICAL DIAGRAMS WIRING DIAGRAM Split System Air Conditioner Outdoor Section Single Phase NOTES 1 Disconnect all power before servicing 1 Couper le courant avant de faire letretien 2 For supply connections use copper conductors only 2 Employez uniquement des conducteurs en cuivre 3 Not suitable on systems that exceed 150 volts to ground 3 Ne convient pas aux installations de plus de 150 volt a la terre 4 For replacement wires use conductors suitable for 105 deg C 5 For ampacities and overcurrent protection see unit rating plate 6 Connect to 24 vac 40ca class 2 circuit See furnace airhandler installation instructions for control circuit and optional relay transformer kits 7 Anti Short Cycle Timer ASCT may or may not be installed in the unit If desired ASCT is factory installed on select models only or may be field ins
15. door unit s installation instructions for installation details 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 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 Sufficient clearance for unobstructed airflow through the outdoor coil must be maintained in order to achieve rated performance See Figure 1 for minimum clearances to obstructions Overhead obstructions Figure 1 poorly ventilated areas and areas subject to accumulation of debris should be avoided Consideration should be given to availability of electric power service access noise and shade Packaging Removal NOTE To prevent damage to the tubing connections carefully remove the carton and user s manual from the equipment Discard the shipping carton Ground Level Ground level installations must be located according to local building codes or ordinances and these requirements Clearances must be in accordance with those shown in Figure 1 A suitable
16. efer to Figure 2 Figure 3 Figure 4 Figure 5 amp Figure 6 pages 7 8 amp 9 for correct system charging S6BF outdoor units with non AHRI listed indoor coils are notrecommended Deviations from rated airflows or non listed combinations may require modification to the expansion device and refrigerant charging procedures for proper and efficient system operation The refrigerant charge can be checked and adjusted through the service ports provided external to the outdoor unit Use only gage line sets which have a Schrader depression device present to actuate the valve Charging the Unit in AC mode At outdoor temperatures above 55 F for optimized sub cooling of 10 F 12 F 1 With the system operating at steady state measure the liquid refrigerant pressure in psig at the outdoor unit service valve 2 Measure the liquid refrigerant temperature in Fahrenheit at the service valve 3 Determine the required liquid refrigerant pressure from the appropriate charging chart Figure 2 Figure 3 Figure 4 Figure 5 amp Figure 6 If the pressure measured in Step 1 is greater than the required liquid refrigerant pressure determined in Step 3 then there is too much charge in the system Remove refrigerant and repeat Steps 1 through 3 until the system is correctly charged If the pressure measured in Step 1 is less than the required liquid refrigerant pressure determined in Step 3 there is too little charge in the s
17. le through all Nordyne distributors Please have the complete model and serial number of the unit when ordering replacement parts Electrical Capacitors Temperature Limit Switches Compressors Thermostats Contactors Time Delay Relays Pressure Switches Transformers Relays Motors Blower Motor Fan Motor Components Blower Assembly Fan Grille Cabinet Panels Filter Driers Expansion Valves NORDYNE COMPLETE COMFORT GENUINE VALUE Specifications amp illustrations subject to change without notice or incurring obligations Fallon Printed in U S A 08 13 ES 709427A Replaces 7094270
18. nspecta systems operation using quality instruments match the measured liquid temperature to the units table The measured liquid pressure reading should be within 3 of the table value for most installations For systems that are operating with more than a 5 deviation inspect the unit for the proper voltage and phase balance and the refrigeration system for leaks Units that are operating at less then 95 of the nominal voltage or with 2 phase imbalance may see more significant deviation than the amount stated above DO NOT use the charts in systems thathave afan cycling under low ambient control Refer to the low ambient kit instructions for more information If applicable S6BF 024K Charging Chart Cooling Remove refrigerant when above curve gt 2 5 a Eo 5 5 5 4 85 90 95 100 105 Add refrigerant when below curve 110 115 120 125 130 135 Liquid Temperature F Figure 2 Charging Chart for 2 Ton Units S6BF 024K Series TXV Matches D 5 a i 5 5 33 a Liquid Pressure psig S6BF 030K Charging Chart Cooling Remove refrigerant when above curve Add refrigerant when below curve 80 85 90 95 100 105 110 115 120 125 130 Liquid Temperature F Figure 3 Charging Chart for 2 5 Ton Units S6BF 030 Series TXV Matches S6BF 036K Charging Chart Cooling Remove refrigerant when above curve Add refrigerant when bel
19. ow curve 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature F Figure 4 Charging Chart for 3 Ton Units S6BF 036 Series TXV Matches 2 a 2 5 a o 3 5 5 4 Liquid Pressure psig S6BF 042K Charging Chart Cooling Remove refrigerant when above curve Add refrigerant when below curve 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature F Figure 5 Charging Chart for 3 5 Ton Units S6BF 042 Series TXV Matches S6BF 048K Charging Chart Cooling Remove refrigerant when above curve Add refrigerant when below curve 80 85 90 95 100 105 110 115 120 125 130 Liquid Temperature F Figure 6 Charging Chart for 4 Ton Units S6BF 048 Series TXV Matches COMPONENT FUNCTIONS High Pressure Switch HPS A high pressure switch is factory installed and located in the liquid line internal to the outdoor 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 575 psig then the switch will open and de energize the outdoor unit The switch will close again once the liquid pressure decreases to 460 psig Please note that the switch interrupts the thermostat inputs to the unit Thus when the switch opens and then closes there may be 5 minute short cycling delay before the outdoor unit will energize Low Pressure Switch Sele
20. ructions Optional equipment such as liquid line solenoid valves low ambient etc shouldbe installed in strict accordance with the manufacturer s installation instructions ELECTRICAL WIRING A WARNING ELECTRICAL SHOCK OR FIRE HAZARD 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 and ordinances and with the current revision of the National Electric Code ANSI NFPA 70 For Canadian installations the electrical connections and grounding shall comply with the current Canadian Electrical Code CSA C22 1 and or local codes Pre Electrical Checklist Verify that the voltage frequency and phase of the supply source match the specifications on the unit rating plate Verify that the service provided by the utility is sufficient to handle the additional load imposed by this equipment Refer to the unit wiring label for proper voltage wiring y Verify factory wiring is in accordance with the unit wiring diagram See Figure 7 page 10 amp Figure 8 page 11 Inspect for loose connections Line Voltage A wiring diagram is located on the inside cover of the
21. stem to operate for several minutes and then set the temperature selector above room temperature Verify the fan and compressor cycle off with the thermostat NOTE The blower should also stop unless fan mode is set to the ON position System Heating optional 1 Set the thermostat s system mode to HEAT and the temperature mode above room temperature 2 Verify the optional heating equipment furnace or electric heat and indoor blower energize Feel the air being circulated by the indoor blower and verify that it is warmer than ambient temperature Listen for any unusual noises If unusual sounds occur determine the source of the noise and correct as necessary 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 Theunit may have morethan oneelectrical 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 aboutthe 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
22. talled as shown using manufacturer s approved kit If not present connect Yellow and Black wires per Note 6 OUTDOOR FAN MOTOR BLUE lt j 2 230 ORANGE CCH DUAL COMPRESSOR OPTIONAL CONTACTS CAPACITOR YELLOW RED OR RED BLACK i YELLOW BLACK i 1 GROUNDING SCREW 1 l 1 12 GND CRANKCASE 24 VOLT FIELD HEATER CONNECTIONS SEE NOTE 6 OPTIONAL LEGEND CG Contactor Coil FIELD WIRING CCH Grarkeaso HBAs LOW VOLTAGE 710388B HPS High Pressure Switch HIGH VOLTAGE Replaces 710388A 0109 Figure 7 Wiring Diagram for 2 2 5 3 3 5 Ton Models with PSC Motor 10 YEEZLLZ A HOLIMS MOT 891 1 SSVONNVHO HOO NIHIM 1214 1 20 WLSOWHAHL OL HOLIMS HDIH SdH i 7109 1 09 9 1 HOLIMS HOLIMS SNOILOANNOO 4unssaud AYNSSAYd I 91315 LIOA ve Movida 2 IMOTIAA AlddNs 91315 ASVHd NYS I 1 9 1 5 TWNINYSAL He SLOVLNOO v a 2 gt T o MOTIJA LY a HOLOW Nv MOTISA AQEZ 807 5 9 13d
23. tices When connecting refrigerant linesets together it is recommended that dry nitrogen be flowing through the joints during brazing to prevent internal oxidation and scaling Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing If precise forming of refrigerant lines is required a copper tubing bender is recommended Avoid sharp bends and contact of the refrigerant lines with metal surfaces Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation Tubing should be kept clean of foreign debris during installation Every effort should be made by the installer to ensure thatthe field installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity The maximum recommended interconnecting refrigerant line lengths is 75 ft and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 ft A filter dryer is provided with the unit and must be installed in the liquid line of the system If the installation replaces a system with a filter dryer already present in the liquid line the filter dryer must be replaced with the one supplied with the unit The filter dryer must be installed in strict accordance with the manufacturer s installation inst
24. ystem Add refrigerant and repeat Steps 1 through 3 until the system is correctly charged Application Notes for Using Charging Charts This equipment s cooling system contains refrigerant under high pressure Always use safe and environmentally sound methods when handling refrigerant handling or servicing the unit Review the factory literature and safety warnings prior to servicing When repairing system leaks always use a nitrogen inert gas to protectthe refrigerant system and pressure check the repair before re charging Always replace the filter dryers when performing any repair to the refrigeration system with one capable of acid removal After completing the repairs evacuate the system to 350 500 microns and weigh in the refrigerant to the amount specified on the unit rating label The refrigerant charging charts are valid for a variety of indoor return air conditions and are most influenced by the outdoor ambienttemperature outdoor fan operation and the unit operating voltage Before using these charts make sure the unit is ina stable operating mode As shown in Figure 2 Figure 3 Figure 4 Figure 5 amp Figure 6 the ideal system sub cooling can vary over the range of operation Reference the charts to determine the ideal amount of sub cooling foragiven liquid pressure Units charged to other values will not perform atthe rated unit efficiency EER orrated Coefficient of Performance COP in heating mode Toi
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