Installer’s Guide - Runtruhvac

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88-A4AC3001-1A-ENInstaller’s GuideCondensing UnitsALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES.IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection withthe installation. Should further information be desired or should particular problems arise which are not covered sufficiently for thepurchaser’s purposes, the matter should be referred to your installing dealer or local distributor.Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. All of the manufacture’s splitsystems are AHRI rated with Piston/TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor andoutdoor split systems are maximum efficiency, optimum performance and the best overall system 60A1000A! WARNINGsOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing ofheating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels thatare attached to the equipment.

Section 1. Safety!WARNINGThis information is intended for use by individualspossessing adequate backgrounds of electrical andmechanical experience. Any attempt to repair a centralair conditioning product may result in personal injuryand/or property damage. The manufacture or sellercannot be responsible for the interpretation of thisinformation, nor can it assume any liability in connection with its use.!WARNINGThese units use R-410A refrigerant which operatesat 50 to 70% higher pressures than R-22. Use onlyR-410A approved service equipment. Refrigerantcylinders are painted a “Rose” color to indicate thetype of refrigerant and may contain a “dip” tube toallow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil that readilyabsorbs moisture from the atmosphere. To limit this“hygroscopic” action, the system should remain sealedwhenever possible. If a system has been open to theatmosphere for more than 4 hours, the compressor oilmust be replaced. Never break a vacuum with air andalways change the driers when opening the systemfor component replacement. For specific handlingconcerns with R-410A and POE oil reference RetrofitBulletins SS-APG006-EN and APP-APG011-EN orAPP-APG012-EN.!WARNING!LIVE ELECTRICAL COMPONENTS!During installation, testing, servicing, and troubleshooting of this product, it may be necessary to workwith live electrical components. Failure to follow allelectrical safety precautions when exposed to liveelectrical components could result in death or seriousinjury.!CAUTIONIf using existing refrigerant lines make certain that alljoints are brazed, not soldered.!CAUTIONScroll compressor dome temperatures may be hot. Donot touch the top of compressor; it may cause minor tosevere burning.!WARNINGWARNING!This product can expose you to chemicals including lead,which are known to the State of California to cause cancerand birth defects or other reproductive harm. For moreinformation go to www.P65Warnings.ca.govWARNINGUNIT CONTAINS R-410A REFRIGERANT!R-410A operating pressures exceed the limit of R-22.Proper service equipment is required. Failure to useproper service tools may result in equipment damageor personal injury.SERVICEUSE ONLY R-410A REFRIGERANT AND APPROVED POE COMPRESSOR OIL.!WARNINGExtreme caution should be exercised when openingthe Liquid Line Service Valve. Turn counterclockwiseuntil the valve stem just touches the rolled edge. Notorque is required. Failure to follow this warning willresult in abrupt release of system charge and mayresult in personal injury and /or property damage.2 88-A4AC3001-1A-EN

Table of ContentsSection 1. Safety. 2Section 2. Unit Location Considerations. 4Section 3. Unit Preparation. 6Section 4. Setting the Unit. 6Section 5. Refrigerant Line Considerations. 7Section 6. Refrigerant Line Routing. 9Section 7. Refrigerant Line Brazing. 10Section 8. Refrigerant Line Leak Check. 12Section 9. Evacuation. 13Section 10. Service Valves. 13Section 11. Electrical - Low Voltage. 14Section 12. Electrical - High Voltage. 16Section 13. Start Up. 17Section 14. System Charge Adjustment (Systems can be rated with TXV, EEV or Piston) . 18Section 15. Checkout Procedures and Troubleshooting. 24Section 16. Refrigerant Circuits. 2888-A4AC3001-1A-EN3

Section 2. Unit Location Considerations2.1 Unit Dimensions and WeightTable 2.1Unit Dimensions and WeightModelsH x D x W (in)Weight* (lb)A4AC3018A28.6 x 23.6 x 23.6130A4AC3023A28.6 x 23.6 x 23.6130A4AC3024A28.6 x 25.6 x 25.6134A4AC3029A28.6 x 23.6 x 23.6130A4AC3030A28.6 x 25.6 x 25.6134A4AC3036A32.6 x 25.6 x 25.6160A4AC3042A28.6 x 29.8 x 29.8177A4AC3043A28.6 x 34.3 x 34.3193A4AC3048A36.6 x 29.8 x 29.8203A4AC3060A36.6 x 34.3 x 34.3220WHD* Weight values are estimated.When mounting the outdoor unit on a roof, besure the roof will support the unit’s weight.Properly selected isolation is recommended toalleviate sound or vibration transmission to thebuilding structure.2.2 Refrigerant Piping Limits1. The maximum TOTAL length of refrigerantlines from outdoor to indoor unit shouldNOT exceed 150 feet* (including lift).2. The maximum vertical change should notexceed 50 feet*.3. Standard and alternate line sizes andservice valve connection sizes are shown inTable 5.1.* See Table 5.1 for exceptions for certaintonnages.StandardLine Set60’ MaxLine Length60’MaxVerticalChangeNote: For other line lengths, Refer to Refrigerant Piping Application Guide, SS-APG006-ENor Refrigerant Piping Software Program, 323312-xx (latest revision).60’MaxVerticalChange4 88-A4AC3001-1A-EN

2.3 Suggested Locations for Best ReliabilityEnsure the top discharge area is unrestricted forat least five (5) feet above the unit.Avoid InstallNear BedroomsThree (3) feet clearance must be provided infront of the control box (access panels) and anyother side requiring service.It is not recommended to install in a locationwhere noise may distract the building occupants. Some examples of these types of locations are sleeping quarters and by windows ofa living area. Please discuss location with thebuilding owner prior to installation.Min 5’ UnrestrictedMin. 12” toShrubberyMin 3’UnrestrictedAccess PanelAvoid locations such as near windows wherecondensation and freezing defrost vapor canannoy a customer.Position the outdoor unit a minimum of 12” fromany wall or surrounding shrubbery to ensureadequate airflow.Outdoor unit location must be far enough awayfrom any structure to prevent excess roof runoffwater or icicles from falling directly on the unit.Min. 12” toShrubberyMin. 12”to Wall2.4 Cold Climate ConsiderationsNOTE: It is recommended that these precautions be taken for units being installed in areaswhere snow accumulation and prolonged belowfreezing temperatures occur. Units should be elevated 3-12 inches abovethe pad or roof top, depending on localweather. This additional height will allowdrainage of snow and ice melted duringdefrost cycle prior to its refreezing. Ensurethat drain holes in unit base pan are not obstructed preventing draining of defrostwater.If possible, avoid locations that are likely toaccumulate snow drifts. If not possible, asnow drift barrier should be installed aroundthe unit to prevent a build-up of snow on thesides of the unit.88-A4AC3001-1A-ENMin. 12”SnowBarrierSnow Legs3-12” ElevationPad5

Section 3. Unit Preparation3.1 Prepare The Unit For InstallationSTEP 1 - Check for damage and report promptly to the carrier any damage found to the unit.Section 4. Setting the Unit4.1 Pad InstallationWhen installing the unit on a support pad, suchas a concrete slab, consider the following: The pad should be at least 1” larger than theunit on all sides. The pad must be separate from any structure. The pad must be level. The pad should be high enough above gradeto allow for drainage. The pad location must comply with National,State, and Local codes.For other applications refer to application guide.6 88-A4AC3001-1A-EN

Section 5. Refrigerant Line Considerations5.1 Refrigerant Line and Service Valve Connection SizesTable 5.1RATEDLINE SIZESLine SizesService Valve Connection SizesMax Line & Lift LengthsVaporLineLiquidLineVapor LineConnectionLiquid LineConnectionTOTAL MaxLine Length (ft.)Max Lift 83/87/83/815050Note: For other line lengths, Refer to Refrigerant Piping Application Guide, SS-APG006-EN or Refrigerant PipingSoftware Program, 32-3312-xx (latest revision).88-A4AC3001-1A-EN7

5.2 Factory ChargeThe outdoor condensing units are factory charged with the system charge required for the outdoor condensingunit, fifteen (15) feet of tested connecting line, and the smallest indoor evaporative coil match. If connecting linelength exceeds fifteen (15) feet and/or a larger indoor evaporative coil is installed, then final refrigerantcharge adjustment is necessary.5.3 Required Refrigerant Line LengthDetermine required line length and lift. You willneed this later in STEP 2 of Section 14.Total Line Length Ft.Total Vertical Change (lift) Ft.Line Length5.4 Refrigerant Line InsulationImportant: The Vapor Line must always beinsulated. DO NOT allow the Liquid Line andVapor Line to come in direct (metal to metal)contact.Liquid LineVapor LineInsulation8 88-A4AC3001-1A-EN

5.5 Reuse Existing Refrigerant Lines! CAUTIONIf using existing refrigerant lines make certain thatall joints are brazed, not soldered.For retrofit applications, where the existingindoor evaporator coil and/or refrigerant lineswill be used, the following precautions shouldbe taken: Ensure that the indoor evaporator coil andrefrigerant lines are the correct size. Ensure that the refrigerant lines are free ofleaks, acid, and oil.Section 6. Refrigerant Line Routing6.1 PrecautionsImportant: Take precautions to prevent noisewithin the building structure due to vibrationtransmission from the refrigerant lines.Comply with National, State, and Local Codes whenisolating line sets from joists, rafters, walls, or otherstructural elements.For Example: When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation typehangers. Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings. Where the refrigerant lines run through a wall or sill, they should be insulated and isolated. Isolate the lines from all ductwork. Minimize the number of 90º turns.8 Feet MaximumJoist/RafterIsolatorSide View8 Feet MaximumSecure Vapor line from joists using isolators every 8 ft. SecureLiquid Line directly to Vapor line using tape, wire, or other appropriate method every 8 ft.Line SetIsolation From Joist/Rafter88-A4AC3001-1A-EN9

8 Feet MaximumWallIsolatorSide View8 Feet MaximumLine SetSecure Vapor Line using isolators every 8 ft. Secure Liquid Linedirectly to Vapor Line using tape, wire, or other appropriatemethod every 8 ft.Isolation In Wall SpacesWallSealantDuctworkInsulationVapor LineIsolatorLine SetIsolation Through WallDO NOT hang line sets from ductworkSection 7. Refrigerant Line Brazing7.1 Braze The Refrigerant LinesSTEP 1 - Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean bothinternal and external surfaces of the tubingusing an emery cloth.10 88-A4AC3001-1A-EN

STEP 2 - Remove the pressure tap cap andvalve cores from both service valves.STEP 3 - Purge the refrigerant lines and indoorcoil with dry nitrogen.STEP 4 - Wrap a wet rag around the valve bodyto avoid heat damage and continue the dry nitrogen purge.Braze the refrigerant lines to the service valves.Continue the dry nitrogen purge. Do not removethe wet rag until all brazing is completed.Important: Remove the wet rag before stoppingthe dry nitrogen purge.Note: Install drier in Liquid Line.NOTE: Precautions should be taken to avoidheat damage to basepan during brazing. It isrecommended to keep the flame directly off ofthe basepan.88-A4AC3001-1A-EN11

STEP 5 - Replace the pressure tap valve coresafter the service valves have cooled.Section 8. Refrigerant Line Leak Check8.1 Check For LeaksSTEP 1 - Pressurize the refrigerant lines andevaporator coil to 150 PSIG using dry nitrogen.150 PSIGSTEP 2 - Check for leaks by using a soapy solution or bubbles at each brazed location.Remove nitrogren pressure and repair any leaksbefore continuing.12 88-A4AC3001-1A-EN

Section 9. Evacuation9.1 Evacuate the Refrigerant Lines and Indoor CoilImportant: Do not open the service valves untilthe refrigerant lines and indoor coil leak checkand evacuation are complete.0350MicronsSTEP 1 - Evacuate until the micron gauge readsno higher than 350 microns, then close off thevalve to the vacuum pump.ONOFFSTEP 2 - Observe the micron gauge. Evacuationis complete if the micron gauge does not riseabove 500 microns in one (1) minute.1 MIN.Once evacuation is complete blank off thevacuum pump and micron gauge, and close thevalves on the manifold gauge set.Section 10. Service Valves10.1 Open the Gas Service ValveImportant: Leak check and evacuation must becompleted before opening the service valves.CAPNOTE: Do not vent refrigerant gases into theatmosphere.VALVE STEMSTEP 1 - Remove valve stem cap.STEP 2 - Using an adjustable wrench, turn valvestem 1/4 turn counterclockwise to the fully openposition.STEP 3 - Replace the valve stem cap to preventleaks. Tighten finger tight plus an additional 1/6turn.1/4 TURN ONLYCOUNTERCLOCKWISEFOR FULL OPENPOSITIONUNIT SIDEOF VALVEPRESSURE TAP PORTGAS LINE CONNECTION88-A4AC3001-1A-EN13

10.1 Open the Liquid Service Valve!WARNINGExtreme caution should be exercised whenopening the Liquid Line Service Valve. Turncounterclockwise until the valve stem justtouches the rolled edge. No torque is required.Failure to follow this warning will result in abruptrelease of system charge and may result inpersonal injury and /or property damage.CapUnit Sideof ServiceValveImportant: Leak check and evacuation must becompleted before opening the service valves.3/16” Hex WrenchRolled Edge toCaptivate StemHex HeadedValve SystemSTEP 1 - Remove service valve cap.STEP 2 - Fully insert 3/16” hex wrench into thestem and back out counterclockwise until valvestem just touches the rolled edge (approximatelyfive (5) turns.)Service PortSTEP 3 - Replace the valve cap to prevent leaks.Tighten finger tight plus an additional 1/6 turn.Section 11. Electrical - Low Voltage11.1 Low Voltage Maximum Wire LengthTable 11.1 defines the maximum total length oflow voltage wiring from the outdoor unit, to theindoor unit, and to the thermostat.Table 11.124 VOLTSWIRE SIZEMAX. WIRE LENGTH18 AWG150 Ft.16 AWG225 Ft.14 AWG300 Ft.14 88-A4AC3001-1A-EN

11.2 Low Voltage Hook-up DiagramsWith A4AH4ThermostatRRFANGGB/COutdoorUnitAir Handler24 VAC HOT24 VACCommonWith TEM 3, 4BBlueBCOOL/HEAT1st STAGEYY124 VAC HOTRRFANGGB/CB24 VACCommonBlueCOOL/HEAT1st STAGEY1YY2*HEATING2nd STAGEEMERGENCYHEATW1HEATING2nd VYOutdoorUnitAir KBKWH/BLKWH/BLK Units with pigtails require wirenuts for connections. Cap all unused wires. In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat. TEM3/4 - Bypass air handler and connect Y from comfort control directly to OD unit* If equipped with first stage heat** When using a BK enabled comfort control, cut BK jumper and bypass Y1 and Y2 at the air handler. Connect BK from comfort control to BK ofthe air handlerWith FurnaceThermostatFurnaceWith Variable Speed FurnaceOutdoorUnitThermostatFurnace24 VAC HOTRR24 VAC HOTRRFANGGFANGGB/CBB/CB24 VACCommonB24 VACCommonOutdoorUnitBOCOOLHEATINGY1YW1W1* W2W2YCOOLHEATINGY1**YYYLOW1W1* W2W2BKBK** Units with pigtails require wirenuts for connections. Cap all unused wires. In AC systems for multiple stages of heat, jumper W1 and W2 together if comfort control has only one stage of heat.* If equipped with second stage heat** When using a BK enabled comfort control, cut BK jumper and bypass Y and YLo at the furnace. Connect BK from comfort control toBK of the furnace88-A4AC3001-1A-EN15

Section 12. Electrical - High Voltage12.1 High Voltage Power Supply!WARNINGLIVE ELECTRICAL COMPONENTS!During installation, testing, servicing, andtroubleshooting of this product, it may be necessary to work with live electrical components.Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.The high voltage power supply must agree withthe equipment nameplate. Power wiring mustcomply with national, state, and local codes.Follow instructions on unit wiring diagram locatedon the inside of the control box cover and in theService Facts document included with the unit.12.2 High Voltage Disconnect SwitchInstall a separate disconnect switch at theoutdoor unit.For high voltage connections, flexible electrical conduit is recommended whenever vibration transmission may create a noise problemwithin the structure.12.3 High Voltage GroundGround the outdoor unit per national, state, andlocal code requirements.16 88-A4AC3001-1A-EN

Section 13. Start Up13.1 System Start UpSTEP 1 - E

Installer’s Guide Models A4AC3018A1000A A4AC3023A1000A A4AC3024A1000A A4AC3029A1000A A4AC3030A1000A A4AC3036A1000A A4AC3042A1000A A4AC3043A1000A A4AC3048A1000A . The outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, fifteen

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