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INSTALLATION AND SERVICE PROCEDURECorp. 1503-L7Service LiteratureEL16XC1August 29, 2016EL16XC1 (HFC-410A) SERIES UNITS WITH ALL-ALUMINUM COILTABLE OF CONTENTSThis literature is intended as a general guide and does notsupersede local codes in any way. Consult authorities whohave jurisdiction before installation.WARNINGImproper installation, adjustment, alteration, service ormaintenance can cause personal injury, loss of life, ordamage to property.Installation and service must be performed by a licensedprofessional installer (or equivalent) or a service agency.IMPORTANTThis unit must be matched with an indoor coil as speci fied in Lennox EL16XC1 Engineering Handbook. Coilspreviously charged with HCFC-22 must be flushed.WARNINGElectric Shock Hazard. Can cause injuryor death. Unit must be grounded inaccordance with national and localcodes.Line voltage is present at allcomponents when unit is not inoperation on units with single‐polecontactors. Disconnect all remoteelectric power supplies before openingaccess panel. Unit may have multiplepower supplies.Model Number Identification . . . . . . . . . . . . . . . . . . . .Typical Serial Number Identification . . . . . . . . . . . . . .22Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Unit Parts Arrangement . . . . . . . . . . . . . . . . . . . . . . . .5Operating Gauge Set and Service Valves . . . . . . . . .6Outdoor Unit Placement . . . . . . . . . . . . . . . . . . . . . . . .8Removing and Installing Panels . . . . . . . . . . . . . . . . .10New or Replacement Line Set . . . . . . . . . . . . . . . . . . .11Brazing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .14Flushing Line Set and Indoor Coil . . . . . . . . . . . . . . . .17Installing Indoor Metering Device . . . . . . . . . . . . . . . .18Leak Test Line Set and Indoor Coil . . . . . . . . . . . . . . .19Evacuating Line Set and Indoor Coil . . . . . . . . . . . . .20Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Start-Up and Performance Checklist . . . . . . . . . . . . .24Unit Electrical Diagram and Sequenceof Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Servicing Units Void of Charge . . . . . . . . . . . . . . . . . .27Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27System Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . .27The EL16XC1 air conditioners, which will also be referredto in this instruction as the outdoor unit, use HFC-410Arefrigerant. This outdoor unit must be installed with amatching indoor unit and line set as outlined in the LennoxEL16XC1 Engineering Handbook.This outdoor unit is designed for use in systems that useone of the following refrigerant metering devices: Expansion valve (TXV)Fixed orificeIMPORTANT : Special procedures are required forcleaning the aluminum coil in this unit. See page 23 in thismanual for information.Page 1

Model Number IdentificationEL 16 X C 1 036 230 A 01Product TierEL Elite SeriesNominal SEERMinor Revision NumberRefrigerantX R-410ARatings Revision LevelVoltage230 208/230V-1phase-60hzUnit TypeC Air ConditionerNominal Cooling Capacity - Tons018 1.5024 2030 2.5036 3041 3.5042 3.5047 4048 4060 5Cooling Stages1 Single Stage CompressorRegional Standards– (dash) All Regions or Southwest Region(dependent on size)S North and South RegionsTypical Serial Number IdentificationLocation Code19 Saltillo, Mexico58 Marshalltown, IA5 8 09C057165 (or 6) Digit Unique NumberYear Code08 200809 200910 2010Month CodeA JanuaryB FebruaryC MarchSpecificationsUnitModel NumbersOutdoor FanSound Rating Number(dB)1Factory RefrigerantCharge2Number of BladesDiameter - inches.EL16XC1-018724 lbs. 9 oz.318EL16XC1-024724 lbs. 9 oz.322EL16XC1-030715 lbs. 8 oz.322EL16XC1-036EL16XC1S036737 lbs. 1 oz.322EL16XC1-041729 lbs. 9 oz.322EL16XC1-042728 lbs. 12 oz.322EL16XC1-0477211 lbs. 0 oz.426EL16XC1-048759 lbs. 12 oz.422EL16XC1-0607312 lbs. 0 oz.3261 Testedaccording to AHRI Standard 270-2008 test conditions.2 Refrigerantcharge sufficient for 15 foot length of refrigerant lines.Page 2

Electrical Data208/230V - 60 Hz - 1 phUnitModel orMinimumCircuityAmpacity2Condenser FanRated LoadAmps (RLA)Locked Ro tor Amps(LRA)Motor HPNominalRPMFull LoadAmps (FLA)Locked Ro tor 251.82.91 HACR2 Refertype circuit breaker or fuse.to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.Page 3EL16XC1 SERIES

Unit Dimensions - Inches (mm)LIQUID LINECONNECTIONCELECTRICAL INLETSASUCTION LINECONNECTION4.25”(108MM)4.75”(121MM)BTOP VIEWSIDE VIEWUNIT SUPPORTFEETUNIT 2MM)8.25”(210MM)KEJ13.50”(343MM)EL16XC1-024 TO -060 BASE SECTION(Medium and Large Base)EL16XC1-018 BASE SECTION(Small Base)Model NumbersHGF5.50”(140MM)EL16XC1-XXX-230-XX — Dimensions - in. (mm)ABCEL16XC1-01831 (787)27 686)28 (711)DEFEL16XC1-02431 (787)30-1/2(775)35 (889)13-7/8(352)7-3/4(197)3-1/4(83)EL16XC1-03039 (991)30-1/2(775)35 (889)13-7/8(352)7-3/4(197)EL16XC1-036EL16XC1S03631 (787)30-1/2(775)35 (889)13-7/8(352)EL16XC1-04135 (889)30-1/2(775)35 (889)EL16XC1-04239 (991)30-1/2(775)EL16XC1-04735 24)35 3-3/4(95)26-7/8(683)39 (991)30-1/2(775)35 8(92)4-1/2(114)20-5/8(524)45 See above.Page 4

Typical Unit Parts ArrangementCONTACTOR - 1 POLE (K1-1)CAPACITOR (C12)GROUND LUGCONTROL PANELDISCHARGE-LINE HIGHTEMPERATURE SENSORDISCHARGE-LINE HIGHTEMPERATURE SENSORCOMPRESSORHARNESSCOMPRESSORHARNESSHIGH PRESSURESWITCH (S4)HIGH PRESSURESWITCH (S4)LIQUID LINEFILTER DRIER(SINGLE FLOW)LIQUID LINEFILTER DRIER(SINGLE FLOW)LIQUID LINE SERVICEVALVELIQUID LINE SERVICEVALVESUCTION LINESERVICE VALVESUCTION LINESERVICE VALVEFIELD CONNECTIONFOR LIQUID LINEFIELD CONNECTIONFOR SUCTION LINEFIELD CONNECTIONFOR LIQUID LINETYPICAL PLUMBING(COPELAND COMPRESSOR)FIELD CONNECTIONFOR SUCTION LINETYPICAL PLUMBING(LG COMPRESSOR)Figure 1. Typical Parts ArrangementsPage 5EL16XC1 SERIES

IMPORTANTIMPORTANTThe Clean Air Act of 1990 bans the intentional venting ofrefrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.Approved methods of recovery, recycling or reclaimingmust be followed. Fines and/or incarceration may belevied for noncompliance.To prevent stripping of the various caps used, theappropriately sized wrench should be used and fittedsnugly over the cap before tightening.Table 1. Torque RequirementsCAUTIONAs with any mechanical equipment, contact with sharpsheet metal edges can result in personal injury. Takecare while handling this equipment and wear gloves andprotective clothing.Operating Gauge Set and Service ValvesThese instructions are intended as a general guide and donot supersede local codes in any way. Consult authoritieswho have jurisdiction before installation.TORQUE REQUIREMENTSWhen servicing or repairing heating, ventilating, and airconditioning components, ensure the fasteners areappropriately tightened. Table 1 lists torque values forfasteners.IMPORTANTOnly use Allen wrenches of sufficient hardness (50Rc Rockwell Harness Scale minimum). Fully insert thewrench into the valve stem recess.Service valve stems are factory-torqued (from 9 ft-lbs forsmall valves, to 25 ft-lbs for large valves) to preventrefrigerant loss during shipping and handling. Using anAllen wrench rated at less than 50Rc risks rounding orbreaking off the wrench, or stripping the valve stemrecess.See the Lennox Service and Application Notes #C-08-1for further details and information.PartsRecommended TorqueService valve cap8 ft.- lb.11 NMSheet metal screws16 in.- lb.2 NMMachine screws #1028 in.- lb.3 NMCompressor bolts90 in.- lb.10 NMGauge port seal cap8 ft.- lb.11 NMUSING MANIFOLD GAUGE SETWhen checking the system charge, only use a manifoldgauge set that features low loss anti-blow back fittings.Manifold gauge set used with HFC-410A refrigerantsystems must be capable of handling the higher systemoperating pressures. The gauges should be rated for usewith pressures of 0 - 800 psig on the high side and a lowside of 30” vacuum to 250 psig with dampened speed to500 psi. Gauge hoses must be rated for use at up to 800psig of pressure with a 4000 psig burst rating.OPERATING SERVICE VALVESThe liquid and vapor line service valves are used forremoving refrigerant, flushing, leak testing, evacuating,checking charge and charging.Each valve is equipped with a service port which has afactory-installed valve stem. Figure 2 provides informationon how to access and operating both angle and ball servicevalves.Page 6

SERVICE VALVES ANGLE AND BALLOperating Angle Type Service Valve:1. Remove stem cap with an appropriately sized wrench.2. Use a service wrench with a hex-head extension (3/16” for liquid line valve sizes and 5/16” for vapor line valve sizes) to backthe stem out counterclockwise as far as it will go.SERVICE PORT CAPSERVICE PORT CORETO INDOORUNIT(VALVE STEM SHOWNCLOSED) INSERT HEXWRENCH HERE(VALVE STEM SHOWN OPEN)INSERT HEX WRENCH HERESERVICE PORTCORESTEM CAPTO OUTDOOR UNITANGLE-TYPE SERVICE VALVE(FRONT-SEATED CLOSED)ANGLE-TYPE SERVICE VALVE(BACK-SEATED OPENED)When service valve is OPEN, the service port isopen to linE set, indoor and outdoor unit.To Access Service Port:Operating Ball Type Service Valve:A service port cap protects the service port core from contamination andserves as the primary leak seal.1. Remove stem cap with an appropriately sized wrench.2. Use an appropriately sized wrenched to open. To open valve,roate stem counterclockwise 90 . To close rotate stem clockwise90 .TO INDOOR UNITTO OPEN ROTATE STEMCOUNTERCLOCKWISE 90 .TO CLOSE ROTATE STEMCLOCKWISE 90 .1. Remove service port cap with an appropriately sized wrench.2. Connect gauge set to service port.3. When testing is completed, replace service port cap and tighten asfollows: BALL (SHOWNCLOSED)VALVESTEMWith torque wrench: Finger tighten andtorque cap per table 1.Without torque wrench: Finger tighten anduse an appropriately sized wrench to turnan additional 1/6 turn clockwise.Reinstall Stem Cap:1/6 TURN11 1210987 615234Stem cap protects the valve stem from damage and serves as theprimary seal. Replace the stem cap and tighten as follows:SERVICE PORT1/12 TURN SERVICE PORTCORESERVICE PORTCAPTO OUTDOORUNITWHEN SERVICE VALVE IS CLOSED, THE SERVICE PORT IS OPENTO THE LINE SET AND INDOOR UNIT. STEM CAPWith Torque Wrench: Finger tighten andthen torque cap per table 1.Without Torque Wrench: Finger tight en and use an appropriately sizedwrench to turn an additional 1/12 turnclockwise.11 12 121093487 6 5NOTE — A label with specific torque requirements may be affixed to the stem cap. If the label is present, use the specified torque.Figure 2. Angle and Ball Service ValvesPage 7EL16XC1 SERIES

ÍÍÍÍÍÍNOTES:See NOTESService clearance of 30 in. must be maintained on one of the sidesadjacent to the control box.Clearance to one of the other three sides must be 36 in.Clearance to one of the remaining two sides may be 12 in. and thefinal side may be 6 in.SeeNOTESSeeNOTESSee NOTESA clearance of 24 in. must be maintainedbetween two units.ControlBox48 in. clearance required on top of unit.NOTICE: Specific applications may require adjustment of the listed installation clearances to provide protection forthe unit from physical damage or to avoid conditions which limit operating efficiency. (Example: Clearances mayhave to be increased to prevent snow or ice from falling on the top of the unit. Additional clearances may also berequired to prevent air recirculation when the unit is installed under a deck or in another tight space.)Figure 3. Installation ClearancesPLACING UNIT ON SLABOutdoor Unit PlacementWhen installing unit at grade level, the top of the slabshould be high enough above grade so that water fromhigher ground will not collect around the unit. The slabshould have a slope tolerance as described in figure 4,detail B.In order to avoid injury, take proper precaution whenNOTE — If necessary for stability, anchor unit to slab aslifting heavy objects.described in figure 4, detail D.CAUTIONSee Unit Dimensions on page 3 for sizing mounting slab,platforms or supports. Refer to figure 3 for mandatoryinstallation clearance requirements.ELEVATING THE UNITUnits are outfitted with elongated support feet as illustratedin figure 4, detail C.POSITIONING CONSIDERATIONSConsider the following when positioning the unit:If additional elevation is necessary, raise the unit byextending the height of the unit support feet. This may beachieved by using a 2 inch (50.8mm) Schedule 40 femalethreaded adapter.The specified coupling will fit snuggly into the recessedportion of the feet. Use additional 2 inch (50.8mm)Schedule 40 male threaded adaptors which can bethreaded into the female threaded adaptors to makeadditional adjustments to the level of the unit.NOTE — Keep the height of extenders short enough toensure a sturdy installation. If it is necessary to extendfurther, consider a different type of field-fabricatedframework that is sturdy enough for greater heights. Some localities are adopting sound ordinances basedon the unit's sound level registered from the adjacentproperty, not from the installation property. Install theunit as far as possible from the property line. When possible, do not install the unit directly outsidea window. Glass has a very high level of soundtransmission. For proper placement of unit in relationto a window see the provided illustration in figure 4,detail A.Page 8

DETAIL A — Outside Unit PlacementInstall unit away from windows.DETAIL B — Slab Mounting at Ground LevelInstall unit level or, if on a slope, maintain slope tolerance of two (2)degrees (or two inches per five feet [50 mm per 1.5 m]) away frombuilding structure.BUILDINGSTRUCTUREMOUNTINGSLABTWO 90 ELBOWS INSTALLED IN LINE SET WILLREDUCE LINE SET VIBRATION.DETAIL C— Elevated Slab Mountingusing Feet ExtendersGROUND LEVELSTABILIZING UNIT ON UNEVEN SURFACESDETAIL D — Slab Side Mounting#10 1/2” LONG SELF-DRILLINGSHEET METAL SCREWSCOILSTABILIZING BRACKET (18 GAUGEMETAL — 2” WIDTH; HEIGHT ASREQUIRED)BASE PAN#10 1-1/4” LONG HEX HD SCREWAND FLAT WASHERCORNER POSTBASEConcrete slab — use two plastic anchors (holedrill 1/4”)Wood or plastic slab — no plastic anchor (holedrill 1/8”)DETAIL E — Deck Top MountingStabilizing bracket (18 gauge metal — 2” (50.8mm) width; height as required); bend to formright angle as exampled below.LEG DETAILMINIMUM ONEPER SIDE2” (50.8MM) SCH 40FEMALE THREADEDADAPTER2” (50.8MM) SCH 40MALE THREADEDADAPTERSAME FASTENERS ASSLAB SIDE MOUNTING.Use additional 2” SCH 40 male threaded adapterswhich can be threaded into the female threadedadapters to make additional adjustments to the level ofthe unit.FOR EXTRASTABILITYOne bracket per side (minimum). For extra stability, two brackets per side, two inches(51mm) from each corner.IMPORTANT — To help stabilize an outdoor unit, some installations may require strapping the unit to the pad using brackets and anchorscommonly available in the marketplace.Figure 4. Placement, Slab Mounting and Stabilizing UnitPage 9EL16XC1 SERIES

STABILIZING UNIT ON UNEVEN SURFACESNOTICEIMPORTANTUnit Stabilizer Bracket Use (field-provided):Always use stabilizers when unit is raised above thefactory height. (Elevated units could become unstable ingusty wind conditions).Stabilizers may be used on factory height units whenmounted on unstable an uneven surface.With unit positioned at installation site, perform thefollowing:Roof Damage!This system contains both refrigerant and oil. Somerubber roofing material may absorb oil and cause therubber to swell when it comes into contact with oil. Therubber will then bubble and could cause leaks. Protectthe roof surface to avoid exposure to refrigerant and oilduring service and installation. Failure to follow thisnotice could result in damage to roof surface.Removing and Installing PanelsIMPORTANT1. Remove two side louvered panels to expose the unitbase.Do not allow panels to hang on unit by top tab. Tab is foralignment and not designed to support weight of panel.IMPORTANT2. Install the brackets as illustrated in figure 4, detail Dusing conventional practices.To help stabilize an outdoor unit, some installations mayrequire strapping the unit to the pad using brackets andanchors commonly available in the marketplace.3. Replace the panels after installation is complete.WARNINGROOF MOUNTINGInstall the unit a minimum of 6 inches (152 mm) above theroof surface to avoid ice build-up around the unit. Locatethe unit above a load bearing wall or area of the roof thatcan adequately support the unit. Consult local codes forrooftop applications.If unit coil cannot be mounted away from prevailing winterwinds, a wind barrier should be constructed. Size barrier atleast the same height and width as outdoor unit. Mountbarrier 24 inches (610 mm) from the sides of the unit in thedirection of prevailing winds.To prevent personal injury, or damage to panels, unit orstructure, be sure to observe the following:While installing or servicing this unit, carefully stow allremoved panels out of the way, so that the panels will notcause injury to personnel, nor cause damage to objectsor structures nearby, nor will the panels be subjected todamage (e.g., being bent or scratched).While handling or stowing the panels, consider anyweather conditions, especially windy conditions, thatmay cause panels to be blown around and battered.Page 10

LOUVERED PANEL REMOVALIMPORTANT! DO NOT ALLOW PANELS TO HANG ON UNIT BY TOP TAB. TAB IS FORALIGNMENT AND NOT DESIGNED TO SUPPORT WEIGHT OF PANEL.Remove the louvered panels as follows:1. Remove two screws, allowing the panel to swing open slight ly.2. Hold the panel firmly throughout this procedure. Rotate bot tom corner of panel away from hinged corner post until lowerthree tabs clear the slots as illustrated in detail B.3. Move panel down until lip of upper tab clears the top slot incorner post as illustrated in detail A.PANEL SHOWN SLIGHTLY ROTATED TO ALLOW TOP TAB TO EXIT (ORENTER) TOP SLOT FOR REMOVING (OR INSTALLING) PANEL.SCREWHOLESLIPLOUVERED PANEL INSTALLATIONPosition the panel almost parallel with the unit as illustrated indetail D with the screw side as close to the unit as possible.Then, in a continuous motion:1. Slightly rotate and guide the lip of top tab inward as illus trated in detail A and C; then upward into the top slotof the hinge corner post.2. Rotate panel to vertical to fully engage all tabs.3. Holding the panel's hinged side firmly in place, close theright-hand side of the panel, aligning the screw holes.4. When panel is correctly positioned and aligned, insertthe screws and tighten.DETAIL ADETAIL BROTATE IN THIS DIRECTION;THEN DOWN TO REMOVEPANELDetail CMAINTAIN MINIMUM PANEL ANGLE (AS CLOSE TO PARALLEL WITH THE UNITAS POSSIBLE) WHILE INSTALLING PANEL.ANGLE MAY BE TOOEXTREMEHOLD DOOR FIRMLY TO THE HINGEDSIDE TO MAINTAINFULLY-ENGAGED TABSPREFERRED ANGLEFOR INSTALLATIONFigure 5. Removing and Installing PanelsNew or Replacement Line SetREFRIGERANT LINE SETThis section provides information on installation orreplacement of existing line set. If new or replacement lineset is not being installed then proceed to BrazingConnections on page 14.IMPORTANTLennox highly recommends changing line set whenconverting the existing system from HCFC-22 toHFC-410A. If that is not possible and the line set is theproper size as referenced in table 2, use the procedureoutlined under Flushing the System on page 13.If refrigerant lines are routed through a wall, then seal andisolate the opening so vibration is not transmitted to thebuilding. Pay close attention to line set isolation duringinstallation of any HVAC system. When properly isolatedfrom building structures (walls, ceilings. floors), therefrigerant lines will not create unnecessary vibration andsubsequent sounds. See figure 6 for recommendedinstallation practices. Also, consider the following whenplacing and installing a high-efficiency outdoor unit.Liquid lines that meter the refrigerant, such as RFC1 liquidlines, must not be used in this application. Existing line setof proper size as listed in table 2 may be reused. If systemwas previously charged with HCFC-22 refrigerant, thenexisting line set must be flushed (see Flushing on page17).Page 11EL16XC1 SERIES

Field refrigerant piping consists of liquid and vapor linesfrom the outdoor unit to the indoor unit coil (brazeconnections). Use Lennox L15 (sweat, non-flare) seriesline set, or field-fabricated refrigerant line sizes as listed intable 2.WARNINGDanger of fire. Bleeding the refrigerantcharge from only the high side may resultin the low side shell and suction tubingbeing pressurized. Application of abrazing torch while pressurized mayresult in ignition of the refrigerant and oilmixture - check the high and lowpressures before unbrazing.To obtain the correct information from Lennox, be sure tocommunicate the following information: Model (EL16XC1) and size of unit (e.g. -036). Line set diameters for the unit being installed as listedin table 2 and total length of installation. Number of elbows / vertical rise or drop in the piping.WARNINGWhen using a high pressure gas such asdry nitrogen to pressurize a refrigerationor air conditioning system, use aregulator that can control the pressuredown to 1 or 2 psig (6.9 to 13.8 kPa).IMPORTANTMineral oils are not compatible with HFC-410A. If oilmust be added, it must be a Polyol ester oil.CAUTIONBrazing alloys and flux contain materials which arehazardous to your health.Avoid breathing vapors or fumes from brazingoperations. Perform operations only in well ventilatedareas.Wear gloves and protective goggles or face shield toprotect against burns.Wash hands with soap and water after handling brazingalloys and flux.The compressor is charged with sufficient Polyol ester oilfor line set lengths up to 50 feet. Recommend adding oil tosystem based on the amount of refrigerant charge in thesystem. No need to add oil in system with 20 pounds ofrefrigerant or less. For systems over 20 pounds - add oneounce for every five pounds of refrigerant over 20 pounds.Recommended topping-off POE oils are Mobil EALARCTIC 22 CC or ICI EMKARATE RL32CF.Table 2. Service Valve Sizes and Refrigerant Line Set RecommendationsService Valve SizesRecommended Line SetLiquid LineSuction LineLiquid LineSuction LineL15 Series Line Sets-018, -024, -0303/8 in. (10 mm)3/4 in. (19 mm)3/8 in. (10 mm)3/4 in. (19 mm)L15-41 — 15 feet to 50 feet (4.6meters to 15 meters)-036, -041, -042, -047, -0483/8 in. (10 mm)7/8 in. (22 mm)3/8 in. (10 mm)7/8 in. (22 mm)-0603/8 in. (10 mm)1-1/8 in. (25 mm)3/8 in. (10 mm)1-1/8 in. (25 mm)ModelL15-65 — 15 feet to 50 feet (4.6meters to 15 meters)NOTE — Some applications may require a field provided 7/8” to 1-1/8” adapterNOTE — When installing refrigerant lines longer than 50 feet, see the Lennox Refrigerant Piping Design and FabricationGuidelines, CORP. 9351-L9, or contact Lennox Technical Support Product Applications for assistance.Page 12

Line Set Isolation — The following illustrations are examples of proper refrigerant line set isolation:REFRIGERANT LINE SET — INSTALLINGVERTICAL RUNS (NEW CONSTRUCTION SHOWN)REFRIGERANT LINE SET — TRANSITIONFROM VERTICAL TO HORIZONTALANCHORED HEAVY NYLONWIRE TIE OR AUTOMOTIVEMUFFLER‐TYPE HANGERNOTE — Insulate liquid line when it is routed through areas where thesurrounding ambient temperature could become higher than thetemperature of the liquid line or when pressure drop is equal to or greaterthan 20 psig.AUTOMOTIVEMUFFLER‐TYPE HANGEROUTSIDE WALLLIQUID LINEVAPOR LINEWALLSTUDWIRE TIEINSIDE WALLSTRAPWOOD BLOCKBETWEEN STUDSSTRAP LIQUID LINE TOVAPOR LINENON-CORROSIVEMETAL SLEEVEWIRE TIELIQUID LINENON-CORROSIVEMETAL SLEEVEWOOD BLOCKVAPOR LINE - WRAPPEDIN ARMAFLEXWIRE TIESTRAPREFRIGERANT LINE SET — INSTALLINGHORIZONTAL RUNSSLEEVETo hang line set from joist or rafter, use either metal strapping materialor anchored heavy nylon wire ties.WIRE TIE (AROUNDVAPOR LINE ONLY)VAPOR LINE WRAPPEDWITH ARMAFLEX8 FEET (2.43 METERS)STRAPPINGMATERIAL (AROUNDVAPOR LINE ONLY)OUTSIDEWALLFLOOR JOIST ORROOF RAFTERLIQUIDLINETAPE ORWIRE TIE8 FEET (2.43 METERS)PVCPIPENON-CORROSIVEMETAL SLEEVETAPE ORWIRE TIECAULKFIBERGLASSINSULATIONSTRAP THE VAPOR LINE TO THE JOISTOR RAFTER AT 8 FEET (2.43 METERS)INTERVALS THEN STRAP THE LIQUIDLINE TO THE VAPOR LINE.NOTE — Similar installation practices should be used if line set isto be installed on exterior of outside wall.FLOOR JOIST ORROOF RAFTERFigure 6. Line Set InstallationPage 13EL16XC1 SERIES

Brazing ConnectionsUse the procedures outlined in figures 7 and 8 for brazingline set connections to service valves.WARNINGDanger of fire. Bleeding the refrigerantcharge from only the high side may resultin pressurization of the low side shell andsuction tubing. Application of a brazingtorch to a pressurized system may resultin ignition of the refrigerant and oilmixture - Check the high and lowpressures before applying heat.IMPORTANTConnect gauge set low pressure side to vapor lineservice valve and repeat procedure starting atparagraph 4 for brazing the liquid line to service portvalve.IMPORTANTAllow braze joint to cool before removing the wet ragfrom the service valve. Temperatures above 250ºF candamage valve seals.IMPORTANTWARNINGWhen using a high pressure gas such asdry nitrogen to pressurize a refrigerationor air conditioning system, use aregulator that can control the pressuredown to 1 or 2 psig (6.9 to 13.8 kPa).CAUTIONBrazing alloys and flux contain materials which arehazardous to your health.Avoid breathing vapors or fumes from brazingoperations. Perform operations only in well-ventilatedareas.Wear gloves and protective goggles or face shield toprotect against burns.Wash hands with soap and water after handling brazingalloys and flux.Page 14Use silver alloy brazing rods with 5% minimum silveralloy for copper-to-copper brazing. Use 45% minimumalloy for copper-to-brass and copper-to-steel brazing.WARNINGFire, Explosion and Personal SafetyHazard.Failure to follow this warning couldresult in damage, personal injury ordeath.Never use oxygen to pressurize orpurge refrigeration lines. Oxygen,when exposed to a spark or openflame, can cause fire and/or an ex plosion, that could result in propertydamage, personal injury or death.

1CUT AND DEBURCut ends of the refrigerant lines square (free from nicks or dents)and debur the ends. The pipe must remain round. Do not crimp endof the line.2CAP AND CORE REMOVALRemove service cap and core fromboth the suction / vapor and liquid lineservice ports.CUT AND DEBURSERVICE PORTCAPSERVICEPORTCORELINE SET SIZE MATCHESSERVICE VALVE CONNECTIONSERVICEPORTCORESERVICE VALVECONNECTIONSERVICEPORT CAPCOPPER TUBESTUBLIQUID LINE SERVICEVALVEREDUCERLINE SET SIZE IS SMALLERTHAN CONNECTIONSUCTION / VAPOR LINESERVICE VALVEDO NOT CRIMP SERVICE VALVECONNECTOR WHEN PIPE ISSMALLER THAN CONNECTIONREFRIGERANT LINE3ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION / VAPOR LINE SERVICEVALVESFlow regulated nitrogen (at 1 to 2 psig) through the low-side refrigeration gauge set into the liquid line service port valve, and out of the suction /vapor line service port valve.AConnect gauge set low pressure side toliquid line service valve (service port).USE REGULATOR TO FLOWBConnect gauge set center port to bottle ofnitrogen with regulator.CRemove core from valve in suction / vaporline service port to allow nitrogen to escape.SUCTION / VAPOR SERVICE PORT MUST BEOPEN TO ALLOW EXIT POINT FOR NITROGENCLOWHIGHNITROGEN AT 1 TO 2 PSIG.ATTACHGAUGESBSUCTION /VAPOR LINESERVICEVALVEVAPOR LINEOUTDOORUNITINDOORUNITNITROGENLIQUID LINELIQUID LINE SERVICEVALVEAWHEN BRAZING LINE SET TOSERVICE VALVES, POINT FLAMEAWAY FROM SERVICE VALVE.Figure 7. Brazing ProceduresPage 15EL16XC1 SERIES

456WRAP SERVICE VALVESTo help protect service valve seals during brazing, wrap water saturated cloths around service valve bodies and copper tube stubs. Useadditional water saturated cloths underneath the valve body to protect the base paint.FLOW NITROGENFlow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve andout of the suction / vapor valve stem port. See steps 3A, 3B and 3C on manifold gauge set connectionsBRAZE LINE SETWrap both service valves with water saturated cloths as illustrated here and as mentioned in step 4, before brazing to line set. Watersaturated cloths must remain water saturated throughout the brazing and cool-down process.LIQUID LINE

Page 1 Corp. 1503-L7 EL16XC1 Service Literature INSTALLATION AND SERVICE PROCEDURE August 29, 2016 EL16XC1 (HFC-410A) SERIES UNITS WITH ALL-ALUMINUM COIL Th