Installation Operation Maintenance ODYSSEY R22 IOM... · 2019. 7. 26. · (Single Circuit), TTA150, TTA180, TTA200 and TTA240 (Dual Circuit and Manifolded Compressor) system outdoor

ODYSSEY

TTA-IOM-EN0110January 2010

InstallationOperationMaintenance

Light CommercialSplit System 5-20 TonsTTA Model 50 Hz

Single Circuit;TTA 075 RDTTA 100 RDTTA 120 RD

Dual Circuit;TTA 150 RDTTA 180 RDTTA 200 RDTTA 240 RD

Manifolded Compr.;TTA 150 RD0GTTA 180 RD0GTTA 200 RD0GTTA 240 RD0G

TTA-IOM-EN0110.indd 1TTA-IOM-EN0110.indd 1 3/19/10 9:20:45 AM3/19/10 9:20:45 AM

Model Nomenclature

TTA-IOM-EN0110


TTA-IOM-EN0110 3

Contents

2erutalcnemoN ledoM

4noitamrofnI lareneG

5

6

8

noitallatsnI

Refrigerant Piping Guidelines

Refrigerant Charging and Evacuation

10ataD lareneG

12gniriW lacirtcelE

17Dimensional Data

21noitarepO

22ecnanetniaM

Maintenance Log 1 22

23gnitoohS elbuorT


4

General Information

This manual covers the installation ofthe TTA075, TTA100 and TTA120 (Single Circuit), TTA150, TTA180, TTA200 and TTA240 (Dual Circuit and Manifolded Compressor) system outdoor units. Installation procedures should be performed in the sequence that they appear in this manual. Do not destroy or remove the manual from the unit. The manual should remain weather-protected with the unit until all installation procedures are complete.

Note: It is not the intention of thismanual to cover all possiblevariations in systems that mayoccur or to provide comprehensiveinformation concerning every possiblecontingency that may be encounteredduring an installation. If additionalinformation is required or if specificproblems arise that are not fullydiscussed in this manual, contactyour local Sales office.

Note: “Warnings” and “Cautions”appear at appropriate places in thismanual. Your personal safety andthe proper operation of this machinerequire that you follow them carefully.The Company assumes no liability forinstallations or servicing performed byunqualified personnel.

Installation ChecklistAn “Installation Checklist” is providedat the end of the installation sectionof this manual. Use the checklist toverify that all necessary installationprocedures have been completed.Do not use the checklist as asubstitute for reading the informationcontained in the manual. Read theentire manual before beginninginstallation procedures.

Unit InspectionInspect material carefully for anyshipping damage. If damaged,it must be reported to, and claimsmade against the transportationcompany. Compare the informationthat appears on the unit nameplatewith ordering and submittal data toinsure the proper unit was shipped.Available power supply must becompatible with electricalcharacteristics specified oncomponent nameplates.Replace damaged parts withauthorized parts only.

Inspection ChecklistTo protect against loss due todamage incurred in transit, completethe following checklist upon receiptof the unit.• Inspect individual pieces of the

shipment before accepting the unit.Check for obvious damage to theunit or packing material.

• Inspect the unit for concealeddamage before it is stored and assoon as possible after delivery.Concealed damage must bereported within 15 days. If consealed damage is discovered,stop unpacking the shipment.Do not remove damaged materialfrom the receiving location.Take photos of the damage ifpossible. The owner mustprovide reasonable evidence thatthe damage did not occur afterdelivery.

• Notify the carrier’s terminal ofdamage immediately by phoneand by mail. Request an immediatejoint inspection of the damage bythe carrier and the consignee.

• Notify the sales representative andarrange for repair. Do not repair theunit until the damage is inspectedby the carrier’s representative.

Warning: open and lock unit disconnect to prevent injury or death from

electric shock or contact with moving parts before attempting any installationor maintenance.

TTA-IOM-EN0110


5

Installation

Lifting RecommendationsBefore preparing the unit for lifting,estimate the approximate center ofgravity for lifting safety. Because ofplacement of internal components,the unit weight may be unevenlydistributed. Approximate unitweights are given in Table 1.

Warning: On-sight lifting equipmentmust be capable of lifting the unitweight with an adequate safety factor.The use of under-capacity liftingdevices may result in severe personalinjury or death and can seriouslydamage the unit.

The crated unit can be moved using aforklift of suitable capacity. For liftingthe unit, attach lifting straps or slingssecurely to the lifting holes at eachcorner. Use spreader bars to protectthe unit casing from damage. Test liftthe unit to determine proper balanceand stability.

Caution: Use spreader bars to preventlifting straps from damaging the unit.Install bars between lifting straps.This will prevent the straps fromcrushing the unit cabinet ordamaging the unit finish.

ClearancesProvide enough space around theunit to allow unrestricted accessto all service points. Refer to unitdimensional data for minimumrequired service and free airclearances. Observe the followingpoints to insure proper unit operation.

A. Do not install the unit under a lowoverhang. Condenser dischargeclearance is not less than 2.5 mm.

Important: Do not obstruct condenserdischarge air. This can result in warmair recirculation through the coil.

B. Do not locate the unit in a positionwhere runoff water can fall into thefan discharge openings.

C. Condenser intake air is suppliedfrom three sides of the unit. Adhereto the minimum required clearancesgiven in dimensional data.

Unit Mounting“For ground level installation, theunit base should be adequatelysupported and hold the unit nearlevel. The installation must meet theguidelines set forth in local codes.”The support should extend two inchesbeyond the unit base channels at allpoints. The unit and support must beisolated from any adjacent structure toprevent possible noise or vibrationproblems. Any ground level locationmust comply with required clearancesgiven in dimensional data.

TTA-IOM-EN0110


6


Figure 1

Refrigerant PipingTo ensure the return of oil in therefrigerant lines, it is necessary tofollow these recommendations:

1. Select the tube lengths with careand try to avoid having a final fewmeters of tube to use up. Refer totable 2 for tube sizes.

2. Pitch all horizontal suction linesdown towards the unit to assistgravity oil drainage back to thecompressor.

3. Avoid creating large oil traps inhorizontal suction lines as this willreduce oil circulating in the systemand may eventually lead to failureof the compressor.

4. A small oil trap at the end of ahorizontal suction line before a longvertical riser (of more that 2.5metres) has the advantage ofassisting the high velocity gas tocarry the oil up the vertical pipe.

5. Liquid lines require no specialinstallation techniques as the liquidrefrigerant R-22 and the oil mix.The densities of the refrigerant andoil are near enough the same soany movement of liquid refrigerantwill carry oil with it.

6. The installation of a liquid linesight is recommended. It is veryuseful during the maintenanceprocedures.

Refrigerant Piping GuidelinesA. Maximum recommended line

lengths: (per circuit)Maximum linear length 200 Ft.

(W/o accumulator)Maximum suction line lift 60 Ft.Maximum liquid line lift 60 Ft.

B. Maximum allowable pressuredrops (R-22):Suction line 6 psi.Liquid line 35 psi.(without subcooler)Route refrigerant piping forminimum linear length,minimum number of bends andfittings (no reducers) and minimumamount of line exposed to outdoorambients.

C. Recommended line sizes:TTA075RD (Single Circuit)TTA150RD (Dual Circuit)Suction line

1 1/8 inch sealed type Lrefrigerant tubing.

Liquid line1/2 inch sealed type L

refrigerant tubing.

D. Recommended line sizes:TTA100RD and TTA120RD(Single Circuit)TTA180RD, TTA200RD and TTA240RD(Dual Circuit)Suction line



refrigerant tubing.

StubConnection

Valve Stem

Valve Cap

Service Valve

Seal Cap

GaugePortCap

E. Recommended line sizes:TTA150RD0G, TTA180RD0G,TTA200RD0G and TTA240RD0G(Manifolded Compressor)Suction line



refrigerant tubing.

Note: Insulate all refrigerant pipingand connections.

TTA 150 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8

TTA 180 RD0G 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8

TTA 200 RD0G 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8

TTA 240 RD0G 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8

Table 2 - Recommended Interconnecting Lines

Length of Interconnecting Line (feet)

0-20 21-40 41-60 61-80

Liq. Suct. Liq. Suct. Liq. Suct. Liq. Suct.

TTA 075 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8

TTA 100 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 3/8

TTA 120 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 3/8

Notes: 1. Two line sets are required for dual circuits units.2. For line lengths over 80 linear feet and 15 feet liquid line riser,

consult your local Trane representative.

TTA 180 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 3/8

TTA 200 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 3/8

TTA 240 RD 1/2 1 1/8 1/2 1 1/8 1/2 1 1/8 1/2 1 3/8

TTA 150 RD0G 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8 5/8 1 5/8

Model

TTA-IOM-EN0110


TTA-IOM-EN0110 7


Figure 2

Refrigerant Piping Procedures(Outdoor units)Each TTA unit ships with a R-22 holding charge. Due to this minimal amount, we recommend that it be removed and the entire system evacuated (at the proper time) to avoid possible contamination. 1. Remove the compressor service

access panel.2. Locate the liquid and suction line

service valves. Check that thepiping connection stubs on thevalves (Figure 1) line up properlywith the holes in the unit cabinet.

3. Front-seat (close) both of theservice valves must be closedbefore the system is opened.

Caution: Fully close the liquid andsuction line service valves beforepuncturing the seal caps on theconnection stubs. If the seal caps arepunctured with the valves open, therefrigerant contained in each circuitwill be lost.

Warning: Do not heat the seal capsunless they have been punctured. Ifcaps are intact, application of heatmay generate excessive pressure inthe connection stub, causing personalinjury or death due to rupturing ofcomponents and damage to theservice valve.

4. Heat and remove the seal caps.

Caution: Do not remove the sealcaps from refrigerant connectionsunit prepared to braze refrigerantlines to the connections. Excessiveexposure to atmosphere may allowmoisture or dirt to contaminate thesystem, damaging valve seats andcausing ice formation in systemcomponents.

5. Cut, fit and braze tubing, startingat the outdoor unit and work towardthe indoor unit.

Note: Use long radius ells for all 90degree bends.

All brazing should be done using 2to 8 psig dry nitrogen purge flowingthrough the pipe being brazed 9(Figure 2).

Caution: Install a regulating valvebetween the nitrogen source andthe gauge manifold (Figure 2).Unregulated pressures can damagesystem components.

Caution: Wet-wrap all valves andprotect painted surfaces fromexcessive heat. Heat can damagesystem components and the unitfinish.

6. Shut off nitrogen supply.7. Shut off the manifold valve for

the line that is connected to thesuction line service valve.Disconnect the line from the gaugeport on the value.

Refrigerant Piping Procedure(Indoor Unit)Once liquid and suction lines arecomplete to the refrigerantconnections on the indoor unit, heatand remove the seal caps on theindoor unit connection stubs torelease the dry nitrogen charge.

1. Remove both seal caps from theindoor unit connection stubs.

Caution: Do not remove seal caps untilprepared to braze refrigerant lines tothe connections. Extended exposure toatmosphere may allow moisture or dirtto contaminate the system, damagingsystem components.

2. Turn nitrogen supply on. Nitrogenenters through the liquid linegauge port.

3. Braze the liquid line connections.4. Open the gauge port on the suction

line and then braze suction line tothe connection stub. Nitrogen willbleed out the open gauge port onthe suction line.

5. Shut off nitrogen supply.

Leak CheckAfter the brazing operation ofrefrigerant lines to both the outdoorand indoor unit is completed, the fieldbrazed connections must be checkedfor leaks. Pressurize the systemthrough the service valve with drynitrogen to 200 psi. Use soap bubblesor other leak-checking methods toensure that all field joints are leak free.If not, release pressure, repair andrepeat leak test.

ManifoldGauge Pressure

RegulatingValve

Dry

SupplyNitrogen

Liquid LineGauge Port

Liquid Line Service Valve

Suction Line Service ValveSuction Line Gauge Port


8 TTA-IOM-EN0110

Refrigerant Chargingand Evacuation

System Evacuation1. After completion of leak check,

evacuate the system.2. Attach appropriate hoses from

manifold gauge to gas and liquidline pressure taps.

Note: Unnecessary switching ofhoses can be avoided and completeevacuation of all lines leading tosealed system can be accomplishedwith manifold center hose andconnecting branch hose to a cylinderof R-22 and vacuum pump.

3. Attach center hose of manifold gauges to vacuum pump.4. Evacuate the system to hold a 350 micron vacuum.5. Close off valve to vacuum pump and observe the micron gauge. If gauge pressure rised above 500 microns in one (1) minute, then evacuation is incomplete or the system has a leak.6. If vacuum gauge does not rise above 500 microns in one (1) minute, the evacuation should be complete.7. Remove vacuum pump. Attach center hose of manifold gauge to R-22 cylinder, purge the charging line, open valve on R-22 cylinder and allow refrigerant pressure to build up to about 40 psig.8. Close valve on the R-22 supply cylinder and close valves on manifold gauge.9. Leak test the entire system. Using proper procedures and caution, repair any leaks found and repeat the leak test.

Caution: Do not connect a dual-circuit outdoor unit to a single circuit evaporating unit. (blower)

Tubing Sizes Additional Additional See

Suction Liquid Tubing Length Refrigerant Note

1 1/8" 3/8" 15 ft. 0 lb. 11.5 oz. (1)1 1/8" 3/8" 25 ft. 1 lb. 3.0 oz. (1)1 1/8" 3/8" 32 ft. 1 lb. 8.0 oz. (1)1 1/8" 3/8" 40 ft. 1 lb. 14.0 oz. (1)1 3/8" 1/2" 15 ft. 1 lb. 4.0 oz. (2)1 3/8" 1/2" 25 ft. 2 lb. 1.0 oz. (2)1 3/8" 1/2" 32 ft. 2 lb. 11.0 oz. (2)1 3/8" 1/2" 40 ft. 3 lb. 5.0 oz. (2)1 5/8" 5/8" 15 ft. 1 lb. 15.5 oz. (3)1 5/8" 5/8" 25 ft. 3 lb. 5.5 oz. (3)1 5/8" 5/8" 32 ft. 4 lb. 3.2 oz. (3)1 5/8" 5/8" 40 ft. 5 lb. 4.0 oz. (3)

1 Amounts shown are based on .75 ounces of refrigerant per footof 1 1/8" and 3/8" lines.

2 Amounts shown are based on 1.33 ounces of refrigerant per footof 1 3/8" and 1/2" lines.

3 Amounts shown are based on 2.1 ounces of refrigerant per footof 1 5/8" and 5/8" lines.

Note: for tubing over 40 ft. calculate the additional refrigerant needed,based on notes above.

Note: Each TTA unit ships with R-22 holding charge.

Table 4 - Additional Required Refrigerant


9

Refrigerant Chargingand Evacuation

Caution• Freon Gas “R22” only.• Always evacuate air from the tubing before adding refrigerant.• Add refrigerant through the charging port of liquid line valve after the completion of evacuation.• The refrigerant provided by the manufacturer meets all the requirements of our units. When using recycled or reprocessed refrigerant, it is advisable to ensure its quality is equivalent to that of a new refrigerant. For this, it is necessary to have a precise analysis made by a specialized laboratory. If this condition is not respected, the manufacturer’s warranty could be cancelled.

Liquid ChargingAfter the refrigerant pipework system has been pressure tested and evacuated, the refrigerant may be charged as follows.1. Weigh the refrigerant cylinder on weighing scale.2. Attach the charging line from the center hose of manifold gauge to R-22 cylinder.3. Open valve on R-22 cylinder and purge the charging line.4. Invert the refrigerant cylinder, open the liquid line service valve. Open manifold valve so that only liquid will enter the system. The sufficient operating charge is recommended in Table 3.

Gaseous ChargingThis procedure is accomplished with the unit operating. Electrical connections must be complete.Do not proceed until the system is ready to operate.

Procedure1. Open liquid valve that refrigerant go through air handler unit and open suction valve.2. Turn on power to the unit. Allow the system to run for five to ten minutes to stabilize operating conditions.3. Measure airflow across the indoor coil. Compare the measurements with the fan performance data in the Data/Submittal or Service Facts. Once proper airflow is established, observe the suction and head pressure gauges on the gauge manifold.

Suction Line Service Valve

Suction Line Gauge Port

Liquid Line Service Valve

Liquid LineGauge Port

ManifoldGauges

Figure 3

Pressure reading should fall approximately at the points shown by the pressure curves in Service Facts. Add or remove refrigerant (gas only) as required to obtain correct head and suction pressure. Check suction line superheat and condenser sub-cooling to ensure the unit is operating properly.4. Disconnect all power to the unit.5. Remove the charging system from the unit and close the opening in the bottom of the control box with the pivotal cover before attempting to replace access panel.6. Replace all panels.

Additional ChargeRefrigerant suitable for a tube length of 12 to 25 feet is recommended in Table 3. When the tube is longer than 25 feet, additional charging is necessary. For the additional amount, using the table 4 for recommended amounts:

TTA-IOM-EN0110


TTA-IOM-EN0110


TTA-IOM-EN0110


TTA-IOM-EN0110

Electrical Wiring

Electrical WiringTTA field wiring consists of providingpower supply to the unit, installing thesystem indoor thermostat. Access toelectrical connection locations isshown in dimensional data.

Unit Power SupplyThe installer must provide line voltagecircuit (s) to the unit main powerterminals as shown by the unit wiringdiagrams in wiring. Power supplymust include a disconnect switchin a location convenient to the unit.

Ground the unit according to localcodes and provide flexible conduit ifcodes require and/or if vibrationtransmission may cause noiseproblems.

Important: All wiring must complywith applicable local and national(NEC) codes. Type and location ofdisconnect switches must complywith all applicable codes.

Caution: Use copper conductors only.Unit terminals are not designed for usewith aluminum conductors. Use ofimproper wiring materials can result inequipment damage.

Warning: Open the electricaldisconnect switch and lock in openposition to prevent accidental powerapplication. Failure to do so mayresult in personal injury or death dueto electrical shock.

Determine proper wire sizes and unitprotective fusing requirements byreferring to the unit nameplate and/orin Table 5 Field wiring diagrams foraccessories are shipped with theaccessory.

Refrigerant CircuitTTA075-120RD(Single Circuit)TTA150-240RD(Dual Circuit)


TTA-IOM-EN0110 13

Electrical Wiring


TTA-IOM-EN0110

TTA 075, 100, 120 RD

Electrical Wiring


15

Electrical Wiring

TTA-IOM-EN0110

TTA 150, 180, 200, 240 RD


16

Electrical Wiring

TTA-IOM-EN0110

TTA 150, 180, 200, 240 RD0G


17TTA-IOM-EN0110

Dimensional Data


18

Dimensional Data

TTA-IOM-EN0110


19TTA-IOM-EN0110

TTA150/180/200/240RD

Dimensional Data


20 TTA-IOM-EN0110

Dimensional Data

TTA150/180/200/240RD0G


21TTA-IOM-EN0110

Operation

Sequence of OperationGeneralOperation of the system coolingcycles is controlled by the position ofthe system switch on the roomthermostat.

Evaporator Fan (Indoor Supply Air)The evaporator fan is controlled byan ON/AUTO switch on the roomthermostat. With the switch positionedat AUTO and the system operating inthe cooling mode, fan operationcoincides with the cooling run cycles.When the fan switch is positioned atON, fan operation is continuous.

Cooling ModeWith the disconnect switch in the“ON” position, current is suppliedto the compressor crankcase heater(s) and control transformer. Thecrankcase heater (s) supplies heat tothe compressor (s) during the “OFF”cycle. With the room thermostatsystem switch positioned at COOLand the fan switch at AUTO, thecompressor contactor energizes on acall for cooling. When the contacts ofthe compressor contactor energizeson a call for cooling. When thecontacts of the compressor contactorclose, operation of the compressorand condenser fan begins.The evaporator fan contactor alsoenergizes on a call for cooling andinitiates evaporator fan operation.

On dual circuit units, when secondstage cooling is required, Y2 from theindoor thermostat will energize 2ndcompressor.

Note: With the thermostat fan switchin the ON position, the evaporatorfan will operate continuously,regardless of compressor orcondenser fan operation.

Safety ControlsNote: All of these controls may not beinstalled on your unit, check electricalschematic.

Low Pressure Cut-Out (LPCO)This control’s sensor is located in thesuction (gas line, near the compressor).This control will stop the compressorand the outdoor fans in suctionpressure drops below the LowPressure Cut-Out setting.

High Pressure Cut-Out (HPCO)This control’s sensor is located in theliquid line. This device will shut off thecompressor and the outdoor fan (s) ifthe discharge pressure exceeds theHigh Pressure Cut-Out’s setting.

Internal Overload Protector (IOL)This device is a current/thermalactuated warp switch, imbeddedin the compressor motor windings.If will shut off the compressor ifthe temperature or current of thecompressor motor windings exceedsits design trip temperature.

Note: The IOL will put thecompressor back in operation oncethe compressor motor heat hasdropped below the trip setting;however, a check of the refrigerantand electrical systems should bemade to determine the cause andbe corrected.

Installation ChecklistComplete this checklist once theunit is installed to verify that allrecommended procedures havebeen accomplished before startingthe system. Do not operate thesystem until all items covered by thischecklist are complete.

❏ Inspect unit location for properrequired service clearances.

❏ Inspect unit location for proper freeair clearances.

❏ Inspect unit location for secure.Level mounting position.

Refrigerant Piping❏ Performed initial leak test?❏ Connected properly sized and

constructed liquid and suction linesto the connection stubs at both theindoor and outdoor units?

❏ Insulated the entire suction line?❏ Insulated portions of liquid line

exposed to extremes intemperature?

❏ Evacuated each refrigerant circuitto 350 microns?

❏ Charge each circuit with properamount of R-22?

Electrical Wiring❏ Provided unit power wiring (with

disconnect) to proper terminals inthe unit control Section?

❏ Installed system indoor thermostat?❏ Installed system low voltage

interconnecting wiring to properterminals of outdoor unit, indoorunit and system thermostat?

Unit Start-UpOnce the unit is properly installed andpre-start procedures are complete,start the unit by turning the SystemSwitch on the indoor thermostat toeither COOL or AUTO. The systemshould operate normally.

Caution: Ensure the disconnect forthe indoor air handler is closed beforeoperating the system. Operating theoutdoor unit without the indoor fanenergized, can cause unit trip-out onhigh pressure control and/or liquidflood-back to the compressors.


22 TTA-IOM-EN0110

Notes:1. Perform each inspection once per month (during cooling season) while unit is operating.

Maintenance Log1

EvaporatorAmbient Entering air Compressor Superheat Subcooling

Temp Dry Wet Suction Discharge Circuit Circuit

Date (F) Bulb Bulb Pressure pressure No. 1 (1) No. 1 (F)

Maintenance

MaintenancePerform all of the indicatedmaintenance procedures at theintervals scheduled. This will prolongthe life of the unit and reduce thepossibility of costly equipment failure.

MonthlyConduct the following maintenanceinspections once per month.

Warning: Open and lock unitdisconnect to prevent injury or deathfrom electrical shock or contact withmoving parts.

• Inspect air filters and clean ifnecessary.

• Check unit wiring to ensure allconnections are tight and that thewiring insulation is intact.

• Check drain pans and condensatepiping to insure they are free ofobstacles.

• Manually rotate the outdoor fan toinsure proper operation. Inspectthe fan mounting hardware fortightness.

• Inspect the evaporator andcondenser coils for dirt and debris.If the coils appear dirty, clean them.

• With the unit operating in thecooling mode, check the suctionand discharge pressures andcompare them with the valuesprovided in “Pressure Curves”.Record these readings on the“Maintenance Log”.

• Observe indoor fan operation andcorrect any unusual or excessivevibration. Clean blower wheels asneeded.

Annually (Cooling Season)The following maintenance proceduresmust be performed at the beginning ofeach cooling season to insure efficientunit operation.

• Perform all of the monthlymaintenance inspections.

• With the unit operating, check unitsuperheat and record the readingin the “Maintenance Log”.

• Remove any accumulation of dustand/or dirt from the unit casing.

• Remove any accumulation of dustand/or dirt from the unit casing.

• Remove corrosion from any surfaceand re-paint. Check the gasketaround the control panel door toinsure it fits correctly and is in goodcondition to prevent water leakage.

• Remove corrosion from any surfaceand re-paint. Check the gasketaround the control panel door toinsure it fits correctly and is in goodcondition to prevent water leakage.

• Inspect the evaporator fan belt. If itis worn or frayed, replace it.

• Inspect the control panel wiring toinsure that all connections are tightand that the insulation is intact.

Lubricate the indoor fan motorbearings with a non-detergent,20-weight oil. (To insure good bearinglubrication, condenser fan motorbearings should be lubricated onceevery six months).

Note: Some motors are permanentlylubricated.• Check refrigerant piping and fittings

for leaks.


23TTA-IOM-EN0110

Trouble Shooting

Table 9: Troubleshooting Chart

Refrigerant Circuit

SSPSPhgiH ooT erusserP daeH

PSSSPS

P P PS P PS

P P

P P

P P

P

P P P

P

S S S

S

P P S

P S

S S S

S S P SS S

S

SSP

PP

S

woL ooT erusserP daeH

PSSSPPShgih oot erusserp noitcuS

SPSPwol oot erusserp noitcuS

Liquid overfeeding P P(expansion valve)

P

P

SSSPgnideefrevo diuqiL(cap tube)

SSPgnitsorf lioc edisnI

SS SSS SSPSetauqedani-snur .sserpmoCor no cooling/heating

Electrical

Compressor and outsidefan won’t start

Compressor will not startbut outside fan runs

Outside fan won’t start

Compressor humsbut won’t start

Compressor cycles on internal overload

Inside fan won’t start

P : primary causeS : secondary cause

ylppuS re

woP

g nir iW egatloV hgi

Hdaolrev

O lanretnI ross erpmo

Crot icapa

C nuR

rotic apaC trat

Syaler trat

Ss tc atn oc rotcatno

Cgniri

W egatloV woL

rem rof snarT lortno

C Ther

mos

tat

l ioC rotcatno

CesuF eg atloV

woLrosserp

moC kcut

Sr osserp

moC tneic if fenI

egrahcrednU tnaregirfe

Regrahcrev

O tnaregirfeR

daoL ro tarop avE evissecxEelbas nedn o

C noN

wolfriA edistu

O detcirtseR

riceR ri

A edistuO

seta lu cnep

O kcu tS evlaV noisnapxE

taehrepuS

wolfriA edis nI detcir tse

Rsnoit cirtse

R noitalucric tnaregirfeR

kaeL evlaV revO egnah

Ctcefe

D lioC evlaV rev

O egnahC

g nikael evlaV kcehC

tcefeD yale

R tsor feD

tcefeD hcti

wS e

mi T t so rfeD

tcefeD lor tno

C tsorfeD


24 TTA-IOM-EN0110

Trouble Shooting

Safety recommendationsTo avoid accidents and damage, thefollowing recommendations should beobserved during maintenance andservice visits:1. The maximum allowable pressures

for system leak testing on low andhigh pressure side are given in thechapter “Installation”. Alwaysprovide a pressure regulator.

2. Disconnect the main supply beforeany servicing on the unit.

3. Service work on the refrigerationsystem and the electrical systemshould be carried out only byqualified and experiencedpersonnel.

Maintenance contractIt is strongly recommended that yousign a maintenance contract with yourlocal Service Agency. This contractprovides regular maintenance of yourinstallation by a specialist in ourequipment. Regular maintenanceensures that any malfunction isdetected and corrected in good timeand minimizes the possibility thatserious damage will occur. Finally,regular maintenance ensures themaximum operating life of yourequipment. We would remind youthat failure to respect these installationand maintenance instructions mayresult in immediate cancellation ofthe warranty.

TrainingThe equipment described in thismanual is the result of manyyears of research and continuousdevelopment. To assist you inobtaining the best use of it, andmaintaining it in perfect operatingcondition over a long period of time,the constructor has at your disposala refrigeration and air conditioningservice school. The principal aimof this is to give operators andmaintenance technicians a betterknowledge of the equipment they areusing, or that is under their charge.Emphasis is particularly given to theimportance of periodic checks on theunit operating parameters as well ason preventive maintenance, whichreduces the cost of owning the unitby avoiding serious and costlybreakdown.


25TTA-IOM-EN0110

Note


26 TTA-IOM-EN0110

Note


27TTA-IOM-EN0110

Note


Literature Order Number: TTA-IOM-EN0110

Date: Jan 2010

Supersedes: Sep 2009

Stocking Location: Bangkok, Thailand

Trane has a policy of continuous product and product data improvement and reserves the right to change

design and specifications without notice.

For more information, contact your local district

office

Trane

www.trane.com


Documents

Installation Operation Maintenance ODYSSEY R22 IOM... · 2019. 7. 26. · (Single Circuit), TTA150, TTA180, TTA200 and TTA240 (Dual Circuit and Manifolded Compressor) system outdoor