INSTALLATION INSTRUCTIONS R 410A Two Stage Split System .

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INSTALLATION INSTRUCTIONSR 410A Two Stage Split System Heat PumpsCCH9, HCH9, TCH9CCH6, HCH6, TCH6These instructions must be read and understood completely before attempting installation.IMPORTANT: Effective January 1, 2015, all split system and packaged air conditioners must be installed pursuant toapplicable regional efficiency standards issued by the Department of Energy.Safety Labeling and Signal WordsDANGER, WARNING, CAUTION, andNOTEThe signal words DANGER, WARNING,CAUTION, and NOTE are used to identify levels ofhazard seriousness. The signal word DANGER isonly used on product labels to signify an immediatehazard. The signal words WARNING, CAUTION,and NOTE will be used on product labels andthroughout this manual and other manuals that mayapply to the product.DANGER Immediate hazards which will result insevere personal injury or death.WARNING Hazards or unsafe practices whichcould result in severe personal injury or death.CAUTION Hazards or unsafe practices whichmay result in minor personal injury or product orproperty damage.Signal Words in ManualsThe signal word WARNING is used throughout thismanual in the following manner:WARNINGWARNING!The signal word CAUTION is used throughout thismanual in the following manner:!CAUTIONSignal Words on Product LabelingSignal words are used in combination with colorsand/or pictures on product labels.NOTE Used to highlight suggestions which willresult in enhanced installation, reliability, oroperation.TABLE OF CONTENTSSafety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Installation Recommendations . . . . . . . . . . . . . . . . . . . 2Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Start up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7System Functions & Sequence of Operation . . . . . . . 9Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10!WARNINGELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personal injury and/or death.Before installing, modifying, or servicing system,main electrical disconnect switch must be in theOFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.!CAUTIONTroubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11CUT HAZARDStatus Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Failure to follow this caution may result in personal injuryR 410A Quick Reference Guide . . . . . . . . . . . . . . . . . 16Sheet metal parts may have sharp edges or burrs.Use care and wear appropriate protective clothingand gloves when handling parts.428 01 1703 0203/04/15

INSTALLATION INSTRUCTIONSR 410A Split System Heat PumpsSAFETY CONSIDERATIONSConnecting Tube InstallationFigure 1NOTE: Avoid contact between tubing and structureImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electricalshock, or other conditions which may cause death, personalinjury, or property damage. Consult a qualified installer,service agency, or your distributor or branch for information orassistance. The qualified installer or agency must usefactory authorized kits or accessories when modifying thisproduct. Refer to the individual instructions packaged withthe kits or accessories when installing.Follow all safety codes. Wear safety glasses, protectiveclothing, and work gloves. Use quenching cloth for brazingoperations. Have fire extinguisher available. Read theseinstructions thoroughly and follow all warnings or cautionsincluded in literature and attached to the unit. Consult localbuilding codes and current editions of the National ElectricalCode ( NEC ) NFPA 70. In Canada, refer to current editionsof the Canadian electrical code CSA 22.1.Recognize safety information. This is the safety alert symbol!! When you see this symbol on the unit and in instructionsor manuals, be alert to the potential for personal injury.Understand these signal words; DANGER, WARNING, andCAUTION. These words are used with the safety alertsymbol. DANGER identifies the most serious hazards whichwill result in severe personal injury or death. WARNINGsignifies hazards which could result in personal injury ordeath. CAUTION is used to identify unsafe practices whichwould result in minor personal injury or product and propertydamage. NOTE is used to highlight suggestions which willresult in enhanced installation, reliability, or operation.INSTALLATION RECOMMENDATIONSNOTE: In some cases noise in the living area has beentraced to gas pulsations from improper installation ofequipment.1. Locate unit away from windows, patios, decks, etc.where unit operation sound may disturb customer.2. Ensure that vapor and liquid tube diameters areappropriate for unit capacity.3. Run refrigerant tubes as directly as possible byavoiding unnecessary turns and bends.4. Leave some slack between structure and unit toabsorb vibration.5. When passing refrigerant tubes through the wall, sealopening with RTV or other pliable silicon based caulk.(See Fig. 1.)6. Avoid direct tubing contact with water pipes, duct work,floor joists, wall studs, floors, and walls.7. Do not suspend refrigerant tubing from joists and studswith a rigid wire or strap which comes in direct contactwith tubing.(See Fig. 1.)8. Ensure that tubing insulation is pliable and completelysurrounds vapor tube.2OUTDOOR WALLINDOOR WALLCAULKLIQUID TUBEVAPOR TUBEINSULATIONTHROUGH THE WALLJOISTHANGER STRAP(AROUND VAPORTUBE ONLY)INSULATIONVAPOR TUBE1″ (25.4 mm)MIN.LIQUID TUBESUSPENSIONWhen outdoor unit is connected to factory approved indoorunit, outdoor unit contains system refrigerant charge foroperation with AHRI rated indoor unit when connected by 15ft. (4.57 m) of field supplied or factory accessory tubing. Forproper unit operation, check refrigerant charge usingcharging information located on control box cover and/or inthe Check Charge section of this instruction.IMPORTANT: Maximum liquid line size is 3/8 in. OD for allresidential applications including long line.IMPORTANT: Always install the factory supplied liquid linefilter drier. Obtain replacement filter driers from yourdistributor or branch.INSTALLATIONCheck Equipment and Job SiteUnpack UnitMove to final location. Remove carton taking care not todamage unit.Inspect EquipmentFile claim with shipping company prior to installation ifshipment is damaged or incomplete. Locate unit rating plateon unit corner panel. It contains information needed toproperly install unit. Check rating plate to be sure unitmatches job specifications.Install on a Solid, Level Mounting PadIf conditions or local codes require the unit be attached topad, tie down bolts should be used and fastened throughknockouts provided in unit base pan. Refer to unit mountingpattern in Fig. 2 to determine base pan size and knockouthole location.For hurricane tie downs contact your local distributor fordetails and PE (Professional Certification), if required by localauthorities.On rooftop applications, mount on level platform or frame.Place unit above a load bearing wall and isolate unit andtubing set from structure. Arrange supporting members toadequately support unit and minimize transmission ofvibration to building. Consult local codes governing rooftopapplications.9. When necessary, use hanger straps which are 1 in.(25.4 mm) wide and conform to shape of tubinginsulation. (See Fig. 1.)Roof mounted units exposed to winds may require windbaffles. Consult the Low Ambient pressure switch installationinstructions for wind baffle construction.10. Isolate hanger straps from insulation by using metalsleeves bent to conform to shape of insulation.NOTE: Unit must be level to within 2 ( 3/8 in./ft.) percompressor manufacturer specifications.Specifications subject to change without notice.428 01 1703 02

INSTALLATION INSTRUCTIONSR 410A Split System Heat PumpsClearance RequirementsWhen installing, allow sufficient space for airflow clearance,wiring, refrigerant piping, and service. Allow 24 in. (610 mm)clearance to service end of unit and 48 in. (1219.2 mm)above unit. For proper airflow, a 6 in. (152.4 mm) clearanceon one side of unit and 12 in. (304.8 mm) on all remainingsides must be maintained. Maintain a distance of 24 in.(609.6 mm) between units. Position so water, snow, or icefrom roof or eaves cannot fall directly on unit.Figure 2Tie Down Knockouts!CAUTIONUNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.To prevent damage to the unit, ensure that it is locatedwith the supports such that the unit is stable in allcircumstances including adverse conditions.Make Piping ConnectionsWARNING!PERSONAL INJURY AND ENVIRONMENTALHAZARD3/8-in. (9.53 mm) Dia.Tiedown Knockouts inBasepan(2) PlacesFailure to follow this warning could result in personalinjury or death.Relieve pressure and recover all refrigerant before systemrepair or final unit disposal.Use all service ports and open all flow control devices,including solenoid valves.View From Top!UNIT BASE PANDimension35 X 35TIEDOWN KNOCKOUT LOCATIONS in. (mm)ABC9–1/8 (231.8)6–9/16 (166.7)28–7/16 (722.3)On rooftop applications, locate unit at least 6 in. (152.4 mm)above roof surface.Operating AmbientThe minimum outdoor operating ambient in cooling mode is55 F (12.78 C), and the maximum outdoor operating ambientin cooling mode is 125 F (51.67 C). At line voltage of 208V(or below) and an outdoor ambient of 120 F (48.9 C) (andabove), the compressor operates in low stage The maximumo u td o o r o p e ra tin g a m b ie n t i n h e a tin g m o d e i s 6 6 F(18.89 C). 16 SEER product is approved for low ambientcooling operation down to an ambient as low as 0 F( 17.78 C) with low ambient accessory kits. 19 SEERproduct is not approved for low ambient cooling applications.Failure to follow this caution may result in equipmentdamage or improper operation.Do not leave system open to atmosphere any longer thanminimum required for installation. POE oil in compressor isextremely susceptible to moisture absorption. Always keepends of tubing sealed during installation.If ANY refrigerant tubing is buried, provide a 6 in. (152.4mm) vertical rise at service valve. Refrigerant tubinglengths up to 36 in. (914.4 mm) may be buried withoutfurther special consideration. Do not bury lines more than36 in. (914.4 mm).!WARNINGPERSONAL DAMAGE HAZARDFailure to follow this warning may result in equipmentdamage or improper operation. Use a brazing shield.CAUTION Wrap service valves with wet cloth or use a heat sinkmaterial.UNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Unit must be kept free of an accumulation of water and/orice in the basepan.Elevate unit per local climate and code requirements toprovide clearance above estimated snowfall level and ensureadequate drainage of unit. If using accessory support feet,use installation instructions from kit for installation.428 01 1703 02UNIT DAMAGE HAZARDTo prevent damage to unit or service valves, observe thefollowing:Elevate Unit!CAUTIONOutdoor units may be connected to indoor section usingaccessory tubing package or field supplied refrigerant gradetubing of correct size and condition. For tubing requirementsbeyond 80 ft/24.38 m, substantial capacity and performancelosses can occur. Following the recommendations in theLong Line Applications Guideline will reduce these losses.Refer to Table 1 for accessory requirements. Refer to Table 2for field tubing diameters.If refrigerant tubes or indoor coil are exposed to atmosphere,they must be evacuated to 500 microns to eliminatecontamination and moisture in the system.Specifications subject to change without notice.3

INSTALLATION INSTRUCTIONSR 410A Split System Heat PumpsTable 1 Accessory UsageREQUIRED FOR LOWAMBIENT COOLING APPLICATIONS(16 SEER Product Only)(Below 55 F / 12.8 C)AccessoryCompressor Start AssistCapacitor and RelayCrankcase HeaterNOYes, StandardLiquid Line Solenoid ValveSupport FeetHard Shutoff TXVEvaporator Freeze ThermostatLow-Ambient Pressure SwitchIsolation RelayNoRecommendedYes (Standard with factoryapproved indoor unit)YesYesYesREQUIRED FOR LONG LINEAPPLICATIONS*REQUIRED FOR SEA COASTAPPLICATIONS (Withing 2miles/3.22km)NoYes, StandardSee Long Line ApplicationsGuidelineNoYes (Standard with factoryapproved indoor unit)NoNoNoNoNoNoRecommendedYes (Standard with factoryapproved indoor unit)NoNoNo* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Long Line Applications Guideline.Table 2 Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)LIQUIDConnection Diameter3/83/83/8UNIT SIZE624, 924636, 936648, 948, 660, 960RATED VAPORup to 80 ft. (24.38 m)*Tube Diameter3/83/83/8Connection Diameter3/47/87/8Rated Tube Diameter3/47/81 1/8* Units are rated with 25 ft. (7.6 m) of lineset. See Specification sheet for performance data when using different size and length linesets.Notes:1. Do not apply capillary tube or fixed orifice indoor coils to these units.2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 35 ft. (10.7 m) vertical differential 250 ft. (76.2 m) Total Equivalent Length),refer to the Long Line Applications Guideline.!WARNINGEXPLOSION HAZARDFailure to follow this warning couldresult in death, serious personalinjury, and/or property damage.5. Remove adapter tube from bag and connect threadednut to liquid service valve. Tighten nut finger tight andthen with wrench an additional 1/2 turn (15 ft lb). DONOT OVER TIGHTEN!Figure 3Liquid Service ValveNever use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.Outdoor Unit Connected to Factory ApprovedIndoor UnitThese outdoor units are carefully evaluated and listed withspecific indoor coils for proper system performance.Install Adapter TubeInstall Liquid Line Filter Drier Indoor1. Remove plastic retainer holding outdoor piston in liquidservice valve.2. Check outdoor piston size with matching number listedon unit rating plate.3. Locate plastic bag taped to unit containing adaptertube.4. Remove Teflon seal from bag and install on openend of liquid service valve. (See Fig. 3.)4Refer to Fig. 4 and install filter drier as follows:1. Braze 5 in. (127 mm) liquid tube to the indoor coil.2. Wrap filter drier with damp cloth.3. Braze filter drier to 5 in. (127 mm) liquid tube fromstep 1.4. Connect and braze liquid refrigerant tube to the filterdrier.Specifications subject to change without notice.428 01 1703 02

INSTALLATION INSTRUCTIONSLiquid Line Filter DrierFigure 5Deep Vacuum Graph500045004000350030002500200015001000500LEAK INSYSTEMMICRONSFigure 4R 410A Split System Heat PumpsRefrigerant Tubing and Sweat ConnectionsUse refrigerant grade tubing. Service valves are closed fromfactory and ready for brazing. After wrapping service valveswith a wet cloth, braze sweat connections using industryaccepted methods and materials. Consult local coderequirements. Refrigerant tubing and indoor coil are nowready for leak testing . This check should include all field andfactory joints.!CAUTIONUNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Service valves must be wrapped in a heat sinkingmaterial such as a wet cloth while brazing.!CAUTIONUNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Installation of filter drier in liquid line is required.VACUUM TIGHTTOO WETTIGHTDRY SYSTEM0CAUTION3 4 5MINUTES67A95424The triple evacuation method should only be used whensystem does not contain any water in liquid form and vacuumpump is only capable of pulling down to 28 inches of mercury(711mm Hg). Refer to Fig. 6 and proceed is as follows:1. Pull system down to 28 inches of mercury (711mm Hg)and allow pump to continue operating for an additional15 minutes.2. Close manifold valves or valve at vacuum pump andshut off vacuum pump.3. Connect a nitrogen cylinder and regulator to systemand fill with nitrogen until system pressure is 2 psig.4. Close nitrogen valve and allow system to stand for 1hour. During this time, dry nitrogen will diffusethroughout the system absorbing moisture.5. Repeat this procedure as indicated in Figure 6.6. After the final evacuate sequence, confirm there are noleaks in the system. If a leak is found, repeat the entireprocess after repair is made.Figure 6Triple Evacuation SequenceEVACUATEBREAK VACUUM WITH DRY NITROGENUNIT DAMAGE HAZARDWAITFailure to follow this caution may result in equipmentdamage or improper operation.EVACUATENever use the system compressor as a vacuum pump.Refrigerant tubes and indoor coil should be evacuated usingthe recommended deep vacuum method of 500 microns. Analternate triple evacuation method may be used.BREAK VACUUM WITH DRY NITROGENWAITIMPORTANT: Always break a vacuum with dry nitrogen.EVACUATEDeep Vacuum MethodThe deep vacuum method requires a vacuum pump capableof pulling a vacuum of 500 microns and a vacuum gagecapable of accurately measuring this vacuum depth. Thedeep vacuum method is the most positive way of assuring asystem is free of air and liquid water. (See Fig.5)428 01 1703 022Triple Evacuation MethodEvacuate Refrigerant Tubing and Indoor Coil!1CHECK FOR TIGHT, DRY SYSTEM(IF IT HOLDS DEEP VACUUMSpecifications subject to change without notice.CHARGE SYSTEM5

INSTALLATION INSTRUCTIONSR 410A Split System Heat PumpsFinal Tubing CheckFigure 7IMPORTANT: Check to be certain factory tubing on bothindoor and outdoor unit has not shifted during shipment.Ensure tubes are not rubbing against each other or anysheet metal. Pay close attention to feeder tubes, making surewire ties on feeder tubes are secure and tight.Make Electrical ConnectionsCONTACTORFIELD POWERFIELD GROUNDELECTRICAL SHOCK HAZARDWIRINGFailure to follow this warning could result in personalinjury or death.Do not supply power to unit with compressor terminal boxcover removed.Be sure field wiring complies with local and national fire,safety, and electrical codes, and voltage to system is withinlimits shown on unit rating plate. Contact local powercompany for correction of improper voltage. See unit ratingplate for recommended circuit protection device.NOTE: Operation of unit on improper line voltage constitutesabuse and could affect unit reliability. See unit rating plate.Do not install unit in system where voltage may fluctuateabove or below permissible limits.NOTE: Use copper wire only between disconnect switch andunit.NOTE: Install branch circuit disconnect of adequate size perNEC to handle unit starting current. Locate disconnect withinsight from and readily accessible from unit, per Section440 14 of NEC.Route Ground and Power WiresRemove access panel to gain access to unit wiring. Extendwires from disconnect through power wiring hole providedand into unit control box.!DISCONNECTPER N. E. C. AND/ORLOCAL CODESWIRINGWARNING!Line Power ConnectionsGROUNDLUGConnect Control WiringThis unit is capable of communication with an Observer WallControl, or will operate using standard 24v 2 stagethermostat. Route 24v control wires through control wiringgrommet and connect leads to control board. When anObserver Wall Control is available, connect DX and DX connections only. If additional grounding is needed use Cterminal. If a 2 stage thermostat is used, connect to the Y1,Y2, W1, O, and C connections. Refer to the wiring label forfurther clarification.Use No. 18 AWG color coded, insulated (35 C minimum)wire. If thermostat is located more than 100 ft. (30.48 m)from unit, as measured along the control voltage wires, useNo. 16 AWG color coded, insulated wire to avoid excessivevoltage drop.All wiring must be NEC Class 1 and must be separated fromincoming power leads.Use furnace transformer, fan co

INSTALLATION INSTRUCTIONS R 410A Split System Heat Pumps 4 Specifications subject to change without notice. 428 01 1703 02 Table 1 Accessory Usage Accessory REQUIRED FOR LOW AMBIENT COOLING APPLICATIONS (16 SEER Product Only) (Below 55 F / 12.8 C) REQUIRED FOR LONG LINE

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