American Standard - Installer's Guide Side Discharge AC

SSAAFFEETTYY WWAARRNNIINNGGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, andair-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or alteredequipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in theliterature and on the tags, stickers, and labels that are attached to the equipment.

June 2017 1111--AACC4400DD11--11BB--EENN

Side Discharge AC Models4A7L6018A1000A4A7L6024A1000A4A7L6030A1000A4A7L6036A1000A4A7L6042A1000A4A7L6048A1000A4A7L6060A1000A

NNoottee:: “Graphics in this document are forrepresentation only. Actual model may differin appearance.”

Installer’s Guide

©2017 Ingersoll Rand 11-AC40D1-1B-EN

SAFETY SECTIONIImmppoorrttaanntt — This document contains serviceinformation. This is customer property and is to remainwith this unit. Please return to service information packupon completion of work.

WWAARRNNIINNGGHHAAZZAARRDDOOUUSS VVOOLLTTAAGGEE!!FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinnpprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorrddeeaatthh..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

WWAARRNNIINNGGRREEFFRRIIGGEERRAANNTT OOIILL!!FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinnpprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorrddeeaatthh..TThheessee uunniittss uussee RR--441100AA rreeffrriiggeerraanntt wwhhiicchh ooppeerraatteessaatt 5500––7700%% hhiigghheerr pprreessssuurreess tthhaann RR--2222.. UUssee oonnllyy RR--441100AA aapppprroovveedd sseerrvviiccee eeqquuiippmmeenntt.. RReeffrriiggeerraannttccyylliinnddeerrss aarree ppaaiinntteedd aa ““RRoossee”” ccoolloorr ttoo iinnddiiccaatteetthhee ttyyppee ooff rreeffrriiggeerraanntt aanndd mmaayy ccoonnttaaiinn aa ““ddiipp””ttuubbee ttoo aallllooww ffoorr cchhaarrggiinngg ooff lliiqquuiidd rreeffrriiggeerraanntt iinnttootthhee ssyysstteemm.. AAllll RR--441100AA ssyysstteemmss uussee aa PPOOEE ooiill tthhaattrreeaaddiillyy aabbssoorrbbss mmooiissttuurree ffrroomm tthhee aattmmoosspphheerree.. TToolliimmiitt tthhiiss ““hhyyddrroossccooppiicc”” aaccttiioonn,, tthhee ssyysstteemm sshhoouullddrreemmaaiinn sseeaalleedd wwhheenneevveerr ppoossssiibbllee.. IIff aa ssyysstteemm hhaassbbeeeenn ooppeenn ttoo tthhee aattmmoosspphheerree ffoorr mmoorree tthhaann 44hhoouurrss,, tthhee ccoommpprreessssoorr ooiill mmuusstt bbee rreeppllaacceedd.. NNeevveerrbbrreeaakk aa vvaaccuuuumm wwiitthh aaiirr aanndd aallwwaayyss cchhaannggee tthheeddrriieerrss wwhheenn ooppeenniinngg tthhee ssyysstteemm ffoorr ccoommppoonneennttrreeppllaacceemmeenntt.. FFoorr ssppeecciiffiicc hhaannddlliinngg ccoonncceerrnnss wwiitthhRR--441100AA aanndd PPOOEE ooiill,, rreeffeerreennccee RReettrrooffiitt BBuulllleettiinnTTRRNN--AAPPGG0022––EENN..

CCAAUUTTIIOONNHHOOTT SSUURRFFAACCEE!!MMaayy ccaauussee mmiinnoorr ttoo sseevveerree bbuurrnniinngg.. FFaaiilluurree ttooffoollllooww tthhiiss CCaauuttiioonn ccoouulldd rreessuulltt iinn pprrooppeerrttyyddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..DDoo nnoott ttoouucchh ttoopp ooff ccoommpprreessssoorr..

CCAAUUTTIIOONNCCOONNTTAAIINNSS RREEFFRRIIGGEERRAANNTT!!FFaaiilluurree ttoo ffoollllooww pprrooppeerr pprroocceedduurreess ccaann rreessuulltt iinnppeerrssoonnaall iillllnneessss oorr iinnjjuurryy oorr sseevveerree eeqquuiippmmeennttddaammaaggee..SSyysstteemm ccoonnttaaiinnss ooiill aanndd rreeffrriiggeerraanntt uunnddeerr hhiigghhpprreessssuurree.. RReeccoovveerr rreeffrriiggeerraanntt ttoo rreelliieevvee pprreessssuurreebbeeffoorree ooppeenniinngg ssyysstteemm..

CCAAUUTTIIOONNGGRROOUUNNDDIINNGG RREEQQUUIIRREEDD!!FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayyrreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..RReeccoonnnneecctt aallll ggrroouunnddiinngg ddeevviicceess.. AAllll ppaarrttss ooff tthhiisspprroodduucctt tthhaatt aarree ccaappaabbllee ooff ccoonndduuccttiinngg eelleeccttrriiccaallccuurrrreenntt aarree ggrroouunnddeedd.. IIff ggrroouunnddiinngg wwiirreess,, ssccrreewwss,,ssttrraappss,, cclliippss,, nnuuttss,, oorr wwaasshheerrss uusseedd ttoo ccoommpplleettee aappaatthh ttoo ggrroouunndd aarree rreemmoovveedd ffoorr sseerrvviiccee,, tthheeyy mmuussttbbee rreettuurrnneedd ttoo tthheeiirr oorriiggiinnaall ppoossiittiioonn aanndd pprrooppeerrllyyffaasstteenneedd..

WWAARRNNIINNGGSSEERRVVIICCEE VVAALLVVEESS!!FFaaiilluurree ttoo ffoollllooww tthhiiss wwaarrnniinngg wwiillll rreessuulltt iinn aabbrruuppttrreelleeaassee ooff ssyysstteemm cchhaarrggee aanndd mmaayy rreessuulltt iinnppeerrssoonnaall iinnjjuurryy aanndd//oorr pprrooppeerrttyy ddaammaaggee..EExxttrreemmee ccaauuttiioonn sshhoouulldd bbee eexxeerrcciisseedd wwhheennooppeenniinngg tthhee LLiiqquuiidd LLiinnee SSeerrvviiccee VVaallvvee.. TTuurrnn vvaallvveesstteemm ccoouunntteerrcclloocckkwwiissee oonnllyy uunnttiill tthhee sstteemmccoonnttaaccttss tthhee rroolllleedd eeddggee.. NNoo ttoorrqquuee iiss rreeqquuiirreedd..

WWAARRNNIINNGGBBRRAAZZIINNGG RREEQQUUIIRREEDD!!FFaaiilluurree ttoo iinnssppeecctt lliinneess oorr uussee pprrooppeerr sseerrvviiccee ttoooollssmmaayy rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaalliinnjjuurryy..iiff uussiinngg eexxiissttiinngg rreeffrriiggeerraanntt lliinneess mmaakkee cceerrttaaiinn tthhaattaallll jjooiinnttss aarree bbrraazzeedd,, nnoott ssoollddeerreedd..

11-AC40D1-1B-EN 3

Unit Location Considerations . . . . . . . . . . . . . . . 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 8Setting Up the Unit. . . . . . . . . . . . . . . . . . . . 8Refrigerant Line Considerations . . . . . . . . 9Refrigerant Line Brazing . . . . . . . . . . . . . . 12Refrigerant Line Leak Check. . . . . . . . . . . 14Refrigerant Line and Indoor CoilEvacuation . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Service Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electrical — Low Voltage . . . . . . . . . . . . . . . . . . 16Electrical — High Voltage. . . . . . . . . . . . . . . . . 16

Low Voltage Hook-up Diagrams . . . . . . . . . . 17

System Start Up . . . . . . . . . . . . . . . . . . . . . . . . . 18

Subcooling Charging in Coolingbetween 55° F and 120° ODAmbient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

System Charge Adjustment . . . . . . . . . . . . . . . 20

Refrigerant Charging Chart . . . . . . . . . . . . . . . . 21

Subcool Charging Charts . . . . . . . . . . . . . . . . . . 22

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 25Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . 26

Table of Contents

4 11-AC40D1-1B-EN

Unit Location ConsiderationsTable 1. Unit Dimensions (in inches) and Weight

Models H x D x W (in) A B C D E F Weight * (lb)

4TTL6018A 36.75 x 14 1/2 x 40 26.75 40.0 36.75 14.5 16.5 17.5 1454TTL6024A 36.75 x 14 1/2 x 40 26.75 40.0 36.75 14.5 16.5 17.5 145

4TTL6030A 36.75 x 14 1/2 x 40 26.75 40.0 36.75 14.5 16.5 17.5 1604TTL6036A 36.75 x 17 1/2 x 47 32.75 47.0 36.75 17.5 19.5 20.5 2154TTL6042A 36.75 x 17 1/2 x 47 32.75 47.0 36.75 17.5 19.5 20.5 216

4TTL6048A 36.75 x 17 1/2 x 47 32.75 47.0 36.75 17.5 19.5 20.5 2164TTL6060A 42.75 x 17 1/2 x 47 32.75 47.0 42.75 17.5 19.5 20.5 236

* Weight values are estimated (uncrated).

11-AC40D1-1B-EN 5

Table 2. Refrigerant Piping Limits

1. The maximum length of refrigerant lines from outdoor to indoorunit should NOTexceed 150 feet.

2. The maximum vertical change should not exceed 50 feet.

3. Service valve connection diameters are shown in “RefrigerantLine and Service Valve Connection Size Chart.”

UUnniitt LLooccaattiioonn CCoonnssiiddeerraattiioonnss

6 11-AC40D1-1B-EN

Table 3. Suggested Locations for Best Reliability

• Do not locate close to bedrooms as operational sounds may beobjectionable.

• Avoid locations near windows and similar areas wherecondensation and freezing defrost vapor can annoy a customer.

• The coil side of the outdoor unit must be a minimum of 6” fromany wall or surrounding shrubbery to ensure adequate airflow.


11-AC40D1-1B-EN 7

Table 3. Suggested Locations for Best Reliability (continued)

• A 36” minimum clearance is required on the line voltage electricalservice side access panel to any wall or obstruction.

• For ease of service maintenance, provide 24” clearance in front ofthe control box (access panel) and any other side requiringservice.

Table 4. Cold Climate Considerations

Note: It is recommended that these precautions be taken for unitsbeing installed in areas where snow accumulation andprolonged below-freezing temperatures occur.

• Units should be elevated 3–12 inches above the pad or rooftop,depending on local weather. This additional height will allowdrainage of snow and ice melted during defrost cycle prior to itsrefreezing. Ensure that drain holes in unit base pan are notobstructed, preventing drainage of defrost water.

• If possible, avoid locations that are likely to accumulate snowdrifts. If not possible, a snow drift barrier should be installedaround the unit to prevent a build-up of snow on the sides of theunit.


8 11-AC40D1-1B-EN

Unit Preparation

1. Check for damage and report promptly to the carrier any damagefound to the unit.

1. To remove the unit from the pallet, remove wood screws frommounting brackets.

Setting Up the Unit

Table 5. Pad Installation

When installing the unit on a support pad, such as a concrete slab,consider the following:

• The pad should be at least 1” larger than the unit on all sides.

• The pad must be separate from any structure.

• The pad must be level.

• The pad should be high enough above grade to allow for drainage.

• The pad location must comply with National, State, and Localcodes.


11-AC40D1-1B-EN 9

Refrigerant Line Considerations

Table 6. Refrigerant Line and Service Valve Connection Sizes

Rated Line Sizes Service Valve Connection Sizes

Model Vapor Line Liquid Line Vapor Line Connection Liquid Line Connection

4A7L6018A1 3/4 3/8 3/4 3/8

4A7L6024A1 3/4 3/8 3/4 3/8

4A7L6030A1 3/4 3/8 3/4 3/8

4A7L6036A1 3/4 3/8 7/8 3/8

4A7L6042A1 7/8 3/8 7/8 3/8

4A7L6048A1 7/8 3/8 7/8 3/8

4A7L6060A1 1–1/8 3/8 7/8 3/8

Table 7. Factory Charge

These outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, fifteen (15) feet of testedconnecting line, and the smallest indoor evaporative coil match. See unit nameplate. If connecting line length exceeds fifteen (15) feetand/or a larger indoor evaporative coil is installed, then final refrigerant charge adjustment is necessary. Use the Subcoolingcharging procedure found in the outdoor unit Service Facts. Charge level can always be verified with the Refrigerant Charging Chart found in theService Facts.

Table 8. Required Refrigerant Line Length

Determine required line length and lift. You will need this todetermine the subcooling charging corrections later in theinstallation process.

Total Line Length = ___________________________Ft.

Total Vertical Change (lift) = ____________________Ft.


10 11-AC40D1-1B-EN

Table 9. Refrigerant Line Insulation

Important: The Vapor Line must always be insulated. DO NOTallow the Liquid Line and Vapor Line to come in direct(metal to metal) contact.

Note: The gas line must always be insulated. Insulating the liquidline through attic spaces may benefit system performance byminimizing heat gain in the liquid line.

Table 10. Reuse Existing Refrigerant Lines

CCAAUUTTIIOONNRREEFFRRIIGGEERRAANNTT!!FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayyrreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy..IIff uussiinngg eexxiissttiinngg rreeffrriiggeerraanntt lliinneess mmaakkee cceerrttaaiinn tthhaattaallll jjooiinnttss aarree bbrraazzeedd,, nnoott ssoollddeerreedd..

For retrofit applications, where the existing indoor evaporator coiland/or refrigerant lines will be used, the following precautionsshould be taken.

• Ensure that the indoor evaporator coil and refrigerant lines arethe correct size.

• Ensure that the refrigerant lines are free of leaks, acid, and oil.

Important: For more information, see publication number SS-APG006–EN

Table 11. Refrigerant Line Routing Precautions

Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.

Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.

For Example:

• When the refrigerant lines must be fastened to floor joists or other framing in a structure, use isolation type hangers.

• 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 duct work.

• Minimize the number of 90° turns.


11-AC40D1-1B-EN 11

Table 12. Isolation From Joist/Rafter

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriatemethod every 8 ft.

Table 13. Isolation In Wall Spaces

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriatemethod every 8 ft.

Table 14. Isolation Through Wall


12 11-AC40D1-1B-EN

Refrigerant Line Brazing

Table 15. Braze the Refrigerant Lines

1. Remove caps or plugs. Use a deburring tool to debur the pipeends. Clean both internal and external surfaces of the tubingusing an emery cloth.

2. Remove the pressure tap cap and valve core from each servicevalves.

3. Purge the refrigerant lines and indoor coil with dry nitrogen.


11-AC40D1-1B-EN 13

Table 15. Braze the Refrigerant Lines (continued)

4. Wrap a wet rag around the valve body to avoid heat damage andcontinue the dry nitrogen purge.

5. Braze the refrigerant lines to the service valves.

a. For Units shipped with a field-installed external drier, checkliquid line filter drier’s directional flow arrow to confirmcorrect direction of refrigeration flow (away from outdoor unitand toward evaporator coil) as illustrated. Braze the filterdrier to the Liquid Line.

6. Continue the dry nitrogen purge. Do not remove the wet rag untilall brazing is completed.

Important: Remove the wet rag before stopping the dry nitrogenpurge.

Note: Precautions should be taken to avoid heat damage to base panduring brazing. It is recommended to keep the flame directlyoff of the base pan.

7. Replace the pressure tap valve cores after the service valves havecooled.


14 11-AC40D1-1B-EN

Refrigerant Line Leak Check

Table 16. Check for Leaks

1. Pressurize the refrigerant lines and evaporator coil to 150 PSIGusing dry nitrogen.

2. Check for leaks by using a soapy solution at each brazed location.

Note: Remove nitrogen pressure and repair any leaks beforecontinuing.

Refrigerant Line and Indoor Coil Evacuation

IImmppoorrttaanntt:: Do not open the service valves until therefrigerant lines and indoor coil leak checkand evacuation are complete.

1. Evacuate until the micron gauge reads no higher than350 microns, then close off the valve to the vacuumpump.

0350Microns

ON OFF

2. Observe the micron gauge. Evacuation is complete ifthe micron gauge does not rise above 500 microns inone (1) minute.

3. When evacuation is complete, blank off the vacuumpump and micron gauge, and close the valves on themanifold gauge set.

1 MIN.


11-AC40D1-1B-EN 15

Service Valves

Table 17. Open the Gas Service Valve

Important: Leak check and evacuation must be completed beforeopening the service valves.

Note: Do not vent refrigerant gases into the atmosphere.

1. Remove valve stem cap.

2. Using a wrench, turn valve stem 1/4 turn counterclockwise tothe fully open position.

3. Replace the valve stem cap to prevent leaks. Tighten fingertight plus an additional 1/6 turn.

Table 18. Open the Liquid Service Valve

WWAARRNNIINNGGSSEERRVVIICCEE VVAALLVVEESS!!FFaaiilluurree ttoo ffoollllooww tthhiiss wwaarrnniinngg wwiillll rreessuulltt iinn aabbrruuppttrreelleeaassee ooff ssyysstteemm cchhaarrggee aanndd mmaayy rreessuulltt iinnppeerrssoonnaall iinnjjuurryy aanndd//oorr pprrooppeerrttyy ddaammaaggee..EExxttrreemmee ccaauuttiioonn sshhoouulldd bbee eexxeerrcciisseedd wwhheennooppeenniinngg tthhee LLiiqquuiidd LLiinnee SSeerrvviiccee VVaallvvee.. TTuurrnn vvaallvveesstteemm ccoouunntteerrcclloocckkwwiissee oonnllyy uunnttiill tthhee sstteemmccoonnttaaccttss tthhee rroolllleedd eeddggee.. NNoo ttoorrqquuee iiss rreeqquuiirreedd..

Important: Leak check and evacuation must be completed beforeopening the service valves.

4. Remove service valve cap.

5. Fully insert 3/16” hex wrench into the stem and back outcounterclockwise until valve stem just touches the rolled edge(approximately five (5) turns).

6. Replace the valve cap to prevent leaks. Tighten finger tightplus an additional 1/6 turn.

16 11-AC40D1-1B-EN

Electrical — Low VoltageTable 19. Low Voltage MaximumWire Length

The table defines the maximum total length of low voltage wiringfrom the outdoor unit, to the indoor unit, and to the thermostat.

24 VOLTS

WIRE SIZE MAX. WIRE LENGTH

18 AWG 150 Ft

16 AWG 225 Ft.

14 AWG 300 Ft.

NNoottee:: The use of color coded low voltage wire isrecommended to simplify connections betweenthe outdoor unit, the control, and the indoor unit.

Electrical — High VoltageTable 20. High Voltage Power Supply

WWAARRNNIINNGGLLIIVVEE EELLEECCTTRRIICCAALL CCOOMMPPOONNEENNTTSS!!FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinnpprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..FFoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnss wwhheenneexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss.. IItt mmaayy bbeenneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaall ccoommppoonneennttssdduurriinngg iinnssttaallllaattiioonn,, tteessttiinngg,, sseerrvviicciinngg,, aannddttrroouubblleesshhoooottiinngg ooff tthhiiss pprroodduucctt..

The high voltage power supply must agree with the equipmentnameplate.

Power wiring must comply with national, state, and local codes.

Follow instructions on unit wiring diagram located on the inside of thecontrol box cover.

Table 21. High Voltage Disconnect Switch

WWAARRNNIINNGGHHIIGGHH LLEEAAKKAAGGEE CCUURRRREENNTT!!FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinnpprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh..EEaarrtthh ccoonnnneeccttiioonn eesssseennttiiaall bbeeffoorree ccoonnnneeccttiinnggeelleeccttrriiccaall ssuuppppllyy..

Install a separate disconnect switch at the outdoor unit.

For high voltage connections, flexible electrical conduit isrecommended whenever vibration transmission may create a noiseproblem within the structure.

11-AC40D1-1B-EN 17

Table 22. High Voltage Disconnect Switch

Ground the outdoor unit per national, state, and local coderequirements.

Low Voltage Hook-up Diagrams

EElleeccttrriiccaall —— LLooww VVoollttaaggee

18 11-AC40D1-1B-EN

System Start Up1. Set the system thermostat to OFF.

2. Turn on electrical power disconnect(s) to apply power to theindoor and outdoor units.

3. Wait one (1) hour before starting the unit if compressor crankcaseheater accessory is used and the Outdoor Ambient is below 70°F.

60 MIN.

4. Set the system thermostat to ON.

EElleeccttrriiccaall —— LLooww VVoollttaaggee

11-AC40D1-1B-EN 19

Subcooling Charging in Cooling between 55°° F and 120°°OD Ambient

American Standard has always recommendedinstalling American Standard approved matchedindoor and outdoor systems.

All American Standard split systems are AHRI ratedwith only TXV/EEV indoor systems.

The benefits of installing approved indoor and outdoorsplit systems are maximum efficiency, optimumperformance and the best overall reliability.

The following charging methods are thereforeprescribed for matched systems with indoor TXV/EEVs.

1. Subcooling (in the cooling mode) is the onlyrecommended method of charging above 55°ambient temperatures.

2. For best results — the indoor temperature shouldbe kept between 70° to 80° F. Add system heat ifneeded.

3. At startup, or whenever charge is removed oradded, the system must be operated for a minimum

of (20) minutes to stabilize before accuratemeasurements can be made.

4. Measure Liquid Line Temperature and RefrigerantPressure at service valves.

5. Determine total refrigerant line length, and height(lift) if indoor section is above the condenser.

6. Determine the Design Subcooling ChargingTemperature from the unit nameplate.

7. Locate this value in the appropriate column of theSubcooling Charging Table. Locate your liquid linetemperature in the left column of the table, and theintersecting liquid line pressure under yournameplate subcool value column. Add refrigerantto raise the pressure to match the table, or removerefrigerant to lower the pressure. Again, wait (20)minutes for the system conditions to stabilizebefore adjusting charge again.

8. When system is correctly charged, you can refer toSystem Pressure Curves to verify typicalperformance.

20 11-AC40D1-1B-EN

System Charge Adjustment

Table 23. Temperature Measurements

Check the outdoor temperatures.

Subcooling using “Charging Mode-Cooling” is the onlyrecommended method of charging between 55 ° F and 120° F ambientoutdoor temperature.

For best results the indoor temperature should be kept between 70° Fto 80° F.

Table 24. Subcooling Charging Corrections

Determine the final subcooling value using total Line Length and Lift —See Required Refrigerant Line Length and the Subcooling ChargingCorrections Charts.

Subcooling Charging CorrectionWorksheet

Total Line Length (ft) ________________________

Total Vertical Charge (lift) ________________________(Values from— Required Refrigerant Line Length)

Design Subcooling Value ________________________(from nameplate)

Final Subcooling Value ________________________

11-AC40D1-1B-EN 21

Refrigerant Charging Chart

R-410A REFRIGERANT CHARGING CHART

LIQUIDTEMP(°F)

DESIGN SUBCOOLING (°F)

8 9 10 11 12 13 14

LIQUID GAGE PRESSURE (PSI)

55 179 182 185 188 191 195 198

60 195 198 201 204 208 211 215

65 211 215 218 222 225 229 232

70 229 232 236 240 243 247 251

75 247 251 255 259 263 267 271

80 267 271 275 279 283 287 291

85 287 291 296 300 304 309 313

90 309 313 318 322 327 331 336

95 331 336 341 346 351 355 360

100 355 360 365 370 376 381 386

105 381 386 391 396 402 407 413

110 407 413 418 424 429 435 441

115 435 441 446 452 458 464 470

120 464 470 476 482 488 495 501

125 495 501 507 514 520 527 533

22 11-AC40D1-1B-EN

Subcool Charging Charts

1.5 Ton Models

50 4°

40

30 1°

25 Use Design Subcooling 1°

15

10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 1°

Add 1°

Add 1°

Add 2°

REFRIG

ERANT L

INE L

IFT (FT) SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]

2.0 Ton Models

50 1°

40

30

25 Use Design Subcooling15

10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 1°

Add 1°


SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

Add 2°

REFRIG

ERANT L

INE L

IFT (FT)

2.5 Ton Models

50 1°

40

30

25 Use Design Subcooling15 1°

10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 1°

REFRIG

ERANT L

INE L



Add 2°

Add 1°

3.0 Ton Models

50 4°

40

30

25 Use Design Subcooling15 1°

10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 1°

Add 2°

REFRIG

ERANT L

INE L



Add 1°

3.5 Ton Models

50

40

30


10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 1°

Add 1°

Add 1°

Add 2°

Add 4°

RE

FR

IGE

RA

NT

LIN

E L

IFT

(F

T) SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)


4.0 Ton Models

50 1°

40 1°

30


10

0

20 30 40 50 60 70 80 90 100 110 120 130 140 150RE

FR

IGE

RA

NT

LIN

E L

IFT

(F

T) SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)

Add 4°


Add 2°Add 1°

Add 1°

5.0 Ton Models

50 1°

40 1°

30


10

0 1°20 30 40 50 60 70 80 90 100 110 120 130 140 150

Add 4°

Add 2°

Add 1°

Add 1°

REFRIG

ERANT L

INE L



11-AC40D1-1B-EN 23

Table 25. Stabilize the system

1. Wait 20 minutes for the system condition to stabilize betweenadjustments.

Note:When the Liquid Line Temperature and Gage Pressureapproximately match the chart, the system is properlycharged.

2. Remove gauges.3. Replace service port caps to prevent leaks. Tighten finger tight

plus an additional 1/6 turn.

20 MIN.

Table 26. Proper Gage Pressure

Measure the liquid line temperature and pressure at the outdoor unit’sservice valve.

Measure Liquid Line Temp = ________________________°F

Liquid Gage Pressure = ________________________ PSI

Final Subcooling Value = ________________________ °F

Table 27. Proper Gage Pressure

Using the “Refrigerant Charging Chart,” p. 21adjust refrigerant levelto attain proper gage pressure.

Add refrigerant if the Liquid Gage Pressure is lower than the chartvalue.4. Connect gauges to refrigerant bottle and unit as illustrated.5. Purge all hoses.6. Open bottle.7. Stop adding refrigerant when liquid line temperature and Liquid

Gage Pressure match the charging chart.

Note: Recover refrigerant if the Liquid Gage Pressure is higher thanthe chart value.

24 11-AC40D1-1B-EN

Table 28. System Information

8. Record system pressures and temperatures after charging iscomplete.

Outdoor model number = ________________________

Measured Outdoor Ambient = ________________________°F

Measured Indoor Ambient = ________________________°F

Measured Liquid Line Temp = ________________________°F

Measured Suction Line Temp = ________________________°F

Indoor Wet Bulb = ________________________°F

Liquid Gage Pressure = ________________________ PSIG

Suction Gage Pressure = ________________________ PSIG

11-AC40D1-1B-EN 25

Troubleshooting

Is contactorengergized?

(contacts closed)

Compressor fails to startContactor check

YES

YES

YES YES

NO

NO

NO

NO NO

If applicable, checkTDR input

voltage

Go To: Compressor won’t run

Check for 24 volts ACacross contactor coil

Is voltagepresent at

contactor coil?Replace contactor

Check controltransformer and

control fuse

Is the controltransformer

and fuse good?

Jumper R to Y lowvoltage terminalsat thermostat sub

base.

Does thecontactor energize?

Replace the roomthermostat

Repair or replacetransformer or fuse.Investigate cause for

failure (possible short in field wiring)

Repair or replaceconnecting wiring

NO

Check ID Lowvoltage

transformer

YES

Wait 3 minutes andcheck contactor

coil again

26 11-AC40D1-1B-EN

Troubleshooting

TTrroouubblleesshhoooottiinngg

11-AC40D1-1B-EN 27

NNootteess

Ingersoll Rand (NYSE: IR) advances the quality of life by creating comfortable, sustainable and efficientenvironments. Our people and our family of brands — including Club Car®, Ingersoll Rand®, Thermo King® andTrane® —work together to enhance the quality and comfort of air in homes and buildings; transport and protectfood and perishables; and increase industrial productivity and efficiency. We are a global business committed to aworld of sustainable progress and enduring results.

ingersollrand.com

Ingersoll Rand has a policy of continuous product and product data improvements and reserves the right to change design and specificationswithout notice.We are committed to using environmentally conscious print practices.

11-AC40D1-1B-EN 09 Jun 2017

Supersedes 11-AC40D1-1A-EN (March 2017) ©2017 Ingersoll Rand

Documents

American Standard - Installer's Guide Side Discharge AC