packaged rooftop air conditioners foundation™

SSAAFFEETTYY WWAARRNNIINNGGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioningequipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified personcould result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels thatare attached to the equipment.

September 2021 RRTT--SSVVXX005577EE--EENN

Installation, Operation, and Maintenance

Packaged Rooftop AirConditioners Foundation™™Cooling Only and Electric Heat3 to 5 Tons, 60Hz

Model Numbers: EBC036-060

©2021 RT-SVX057E-EN

IntroductionRead this manual thoroughly before operating orservicing this unit.

Warnings, Cautions, and NoticesSafety advisories appear throughout this manual asrequired. Your personal safety and the properoperation of this machine depend upon the strictobservance of these precautions.

The three types of advisories are defined as follows:

WARNINGIndicates a potentially hazardous situationwhich, if not avoided, could result in death orserious injury.

CAUTIONIndicates a potentially hazardous situationwhich, if not avoided, could result in minor ormoderate injury. It could also be used to alertagainst unsafe practices.

NOTICEIndicates a situation that could result inequipment or property-damage onlyaccidents.

Important Environmental ConcernsScientific research has shown that certain man-madechemicals can affect the earth’s naturally occurringstratospheric ozone layer when released to theatmosphere. In particular, several of the identifiedchemicals that may affect the ozone layer arerefrigerants that contain Chlorine, Fluorine and Carbon(CFCs) and those containing Hydrogen, Chlorine,Fluorine and Carbon (HCFCs). Not all refrigerantscontaining these compounds have the same potentialimpact to the environment. Trane advocates theresponsible handling of all refrigerants-includingindustry replacements for CFCs and HCFCs such assaturated or unsaturated HFCs and HCFCs.

Important Responsible RefrigerantPracticesTrane believes that responsible refrigerant practicesare important to the environment, our customers, andthe air conditioning industry. All technicians whohandle refrigerants must be certified according to localrules. For the USA, the Federal Clean Air Act (Section608) sets forth the requirements for handling,reclaiming, recovering and recycling of certainrefrigerants and the equipment that is used in theseservice procedures. In addition, some states ormunicipalities may have additional requirements thatmust also be adhered to for responsible managementof refrigerants. Know the applicable laws and followthem.

WWAARRNNIINNGGPPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinnggRReeqquuiirreedd!!FFaaiilluurree ttoo ffoollllooww ccooddee ccoouulldd rreessuulltt iinn ddeeaatthh oorrsseerriioouuss iinnjjuurryy..AAllll ffiieelldd wwiirriinngg MMUUSSTT bbee ppeerrffoorrmmeedd bbyy qquuaalliiffiieeddppeerrssoonnnneell.. IImmpprrooppeerrllyy iinnssttaalllleedd aanndd ggrroouunnddeeddffiieelldd wwiirriinngg ppoosseess FFIIRREE aanndd EELLEECCTTRROOCCUUTTIIOONNhhaazzaarrddss.. TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoolllloowwrreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aannddggrroouunnddiinngg aass ddeessccrriibbeedd iinn NNEECC aanndd yyoouurr llooccaall//ssttaattee//nnaattiioonnaall eelleeccttrriiccaall ccooddeess..

WWAARRNNIINNGGPPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE))RReeqquuiirreedd!!FFaaiilluurree ttoo wweeaarr pprrooppeerr PPPPEE ffoorr tthhee jjoobb bbeeiinngguunnddeerrttaakkeenn ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroommppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaallhhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaallaanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthheeiinnssttrruuccttiioonnss bbeellooww::

•• BBeeffoorree iinnssttaalllliinngg//sseerrvviicciinngg tthhiiss uunniitt,,tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE rreeqquuiirreedd ffoorrtthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn ((EExxaammpplleess;; ccuuttrreessiissttaanntt gglloovveess//sslleeeevveess,, bbuuttyyll gglloovveess,, ssaaffeettyyggllaasssseess,, hhaarrdd hhaatt//bbuummpp ccaapp,, ffaallll pprrootteeccttiioonn,,eelleeccttrriiccaall PPPPEE aanndd aarrcc ffllaasshh ccllootthhiinngg))..AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee SSaaffeettyy DDaattaaSShheeeettss ((SSDDSS)) aanndd OOSSHHAA gguuiiddeelliinneess ffoorrpprrooppeerr PPPPEE..

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouusscchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaatteeSSDDSS aanndd OOSSHHAA//GGHHSS ((GGlloobbaall HHaarrmmoonniizzeeddSSyysstteemm ooff CCllaassssiiffiiccaattiioonn aanndd LLaabbeelllliinngg ooffCChheemmiiccaallss)) gguuiiddeelliinneess ffoorr iinnffoorrmmaattiioonn oonnaalllloowwaabbllee ppeerrssoonnaall eexxppoossuurree lleevveellss,, pprrooppeerrrreessppiirraattoorryy pprrootteeccttiioonn aanndd hhaannddlliinnggiinnssttrruuccttiioonnss..

•• IIff tthheerree iiss aa rriisskk ooff eenneerrggiizzeedd eelleeccttrriiccaallccoonnttaacctt,, aarrcc,, oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuuttoonn aallll PPPPEE iinn aaccccoorrddaannccee wwiitthh OOSSHHAA,, NNFFPPAA7700EE,, oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttssffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinnggtthhee uunniitt.. NNEEVVEERR PPEERRFFOORRMM AANNYY SSWWIITTCCHHIINNGG,,DDIISSCCOONNNNEECCTTIINNGG,, OORR VVOOLLTTAAGGEE TTEESSTTIINNGGWWIITTHHOOUUTT PPRROOPPEERR EELLEECCTTRRIICCAALL PPPPEE AANNDDAARRCC FFLLAASSHH CCLLOOTTHHIINNGG.. EENNSSUURREEEELLEECCTTRRIICCAALL MMEETTEERRSS AANNDD EEQQUUIIPPMMEENNTT AARREEPPRROOPPEERRLLYY RRAATTEEDD FFOORR IINNTTEENNDDEEDDVVOOLLTTAAGGEE..

RT-SVX057E-EN 3

WWAARRNNIINNGGFFoollllooww EEHHSS PPoolliicciieess!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..

•• AAllll TTrraannee ppeerrssoonnnneell mmuusstt ffoollllooww tthheeccoommppaannyy’’ss EEnnvviirroonnmmeennttaall,, HHeeaalltthh aanndd SSaaffeettyy((EEHHSS)) ppoolliicciieess wwhheenn ppeerrffoorrmmiinngg wwoorrkk ssuucchh aasshhoott wwoorrkk,, eelleeccttrriiccaall,, ffaallll pprrootteeccttiioonn,, lloocckkoouutt//ttaaggoouutt,, rreeffrriiggeerraanntt hhaannddlliinngg,, eettcc.. WWhheerree llooccaallrreegguullaattiioonnss aarree mmoorree ssttrriinnggeenntt tthhaann tthheesseeppoolliicciieess,, tthhoossee rreegguullaattiioonnss ssuuppeerrsseeddee tthheesseeppoolliicciieess..

•• NNoonn--TTrraannee ppeerrssoonnnneell sshhoouulldd aallwwaayyss ffoolllloowwllooccaall rreegguullaattiioonnss..

NNOOTTIICCEEWWaatteerr DDaammaaggee!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinneeqquuiippmmeenntt aanndd pprrooppeerrttyy ddaammaaggee..NNoonn--ffaaccttoorryy ppeenneettrraattiioonnss tthhrroouugghh tthhee bbaassee ooff tthhiissuunniitt aarree nnoott aalllloowweedd.. AAnnyy ppeenneettrraattiioonn iinn tthhee bbaasseeooff tthhee uunniitt mmaayy aaffffeecctt tthhee wwaatteerr ttiigghhtt iinntteeggrriittyy oofftthhee uunniitt aanndd lleeaadd ttoo wwaatteerr lleeaakkss iinnttoo tthheeccoonnddiittiioonneedd ssppaaccee..

Overview of ManualOne copy of this document ships inside the controlpanel of each unit and is customer property. It must beretained by the unit’s maintenance personnel.

IImmppoorrttaanntt:: Do not release refrigerant to theatmosphere! If adding or removingrefrigerant is required, the servicetechnician must comply with all federal,state, and local laws.

This booklet describes the proper installation, startup,operation, and maintenance procedures for air cooledsystems.

By carefully reviewing the information within thismanual and following the instructions, the risk ofimproper operation and/or component damage will beminimized.

It is important that periodic maintenance be performedto help assure trouble free operation. A maintenanceschedule is provided at the end of this manual. Shouldequipment failure occur, contact a qualified serviceorganization with qualified, experienced HVACtechnicians to properly diagnose and repair thisequipment.

CopyrightThis document and the information in it are theproperty of Trane, and may not be used or reproducedin whole or in part without written permission. Tranereserves the right to revise this publication at any time,and to make changes to its content without obligationto notify any person of such revision or change.

TrademarksAll trademarks referenced in this document are thetrademarks of their respective owners.

Factory TrainingFactory training is available through Trane University™to help you learn more about the operation andmaintenance of your equipment. To learn aboutavailable training opportunities contact TraneUniversity™.

Online: www.trane.com/traneuniversity

Phone: 855-803-3563

Email: [email protected]

Revision History• Minor running edits

• Updated Wiring Diagrams chapter.

IInnttrroodduuccttiioonn

www.trane.com/traneuniversity

mail to:[email protected]

4 RT-SVX057E-EN

Model Number Description. . . . . . . . . . . . . . . . . 5

General Information . . . . . . . . . . . . . . . . . . . . . . . . 6Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Exterior Inspection . . . . . . . . . . . . . . . . . . . . 6Inspection for ConcealedDamage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Unit Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 7Economizer Control ActuatorElectromechanical Control . . . . . . . . . . . . . 7JADE Economizer Control - Low LeakEconomizer (LLE) Only . . . . . . . . . . . . . . . . 7System Input Devices andFunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Initiation of Operating Modes - JADEController . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Unit Foundation . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

General Unit Requirements. . . . . . . . . . . . . . . 16Factory Installed Economizer. . . . . . . . . . 17Main Electrical PowerRequirements . . . . . . . . . . . . . . . . . . . . . . . 17Electric Heat Requirements . . . . . . . . . . . 17Condensate DrainConfiguration. . . . . . . . . . . . . . . . . . . . . . . . 17Filter Installation . . . . . . . . . . . . . . . . . . . . . 17Field Installed Power Wiring . . . . . . . . . . 17

Main Unit Power. . . . . . . . . . . . . . . . . . . . . . . . . 18Standard Wiring . . . . . . . . . . . . . . . . . . . . . 18Optional TBUE Wiring (Through theBase Electrical Option) . . . . . . . . . . . . . . . 18Control Power Transformer . . . . . . . . . . . 18Controls using 24 Vac . . . . . . . . . . . . . . . . 18Voltage Imbalance . . . . . . . . . . . . . . . . . . . 19Electrical Phasing (Three PhaseMotors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Compressor Crankcase Heaters . . . . . . . 20Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Factory-Mounted Unit Options. . . . . . . . . . . . 21

Unit Disconnect (FIYUDC). . . . . . . . . . . . . 21

Pre Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Verifying Proper Air Flow (Units withBelt Drive Indoor Fan) . . . . . . . . . . . . . . . . . . . . 23

Electromechanical Controls – TestProcedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Standard Economizer Start-Up. . . . . . . . . . . . 24

LLE Controls Test Procedure. . . . . . . . . . . . . . 24

Compressor Start-Up . . . . . . . . . . . . . . . . . . . . 24

Heating Start-Up . . . . . . . . . . . . . . . . . . . . . . . . 25

Final System Set Up . . . . . . . . . . . . . . . . . . . . . 25

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Fan Belt Adjustment-Belt DriveUnits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Monthly Maintenance. . . . . . . . . . . . . . . . . . . . 27Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Condensate Overflow Switch . . . . . . . . . 27Cooling Season . . . . . . . . . . . . . . . . . . . . . . 27Heating Season . . . . . . . . . . . . . . . . . . . . . . 28Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 28

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 31Standard Troubleshooting . . . . . . . . . . . . . . . 31

Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Low Leak Economizer – (LLE)Troubleshooting . . . . . . . . . . . . . . . . . . . . . 31

Resetting Cooling and HeatingLockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Method 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Method 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Condensate Overflow Switch . . . . . . . . . 32

Unit Economizer Control (ECA) . . . . . . . . . . . 32Error Code. . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34For Commercial Unitary EquipmentRated 25 Tons and Under and RelatedAccessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Basic Warranty . . . . . . . . . . . . . . . . . . . . . . 34Exclusions and Limitations . . . . . . . . . . . 34

Table of Contents

RT-SVX057E-EN 5

Model Number Description

Digit 1 — Unit Type

E = Packaged Cooling, Electric Heat

Digit 2 — Efficiency

B = ASHRAE 90.1 - 2016

Digit 3 — Airflow Configuration

C = Convertible

Digit 4, 5, 6 — Nominal Gross CoolingCapacity (MBh)036 = 3 Tons048 = 4 Tons060 = 5 Tons

Digit 7 —Major Design Sequence

A = Rev A

Digit 8 — Voltage Selection

3 = 208-230/60/34 = 460/60/3W = 575/60/3K = 380/60/35

Digit 9 — Unit Controls

E = Electromechanical

Digit 10 —Heating Capacity

0 = No HeatA = 5 kW Electric HeatB = 7.5 kW Electric HeatC= 10 kW Electric HeatD = 14.4 kW Electric HeatE= 20 kW Electric HeatF= 25 kW Electric Heat

Digit 11—Minor Design Sequence

A = Rev A

Digit 12,13 — Service Sequence

00= None

Digit 14 — Fresh Air Selection2, 3

0 = No Fresh Air

A =Manual Outside Air Damper 0-50%

B = Motorized Outside Air Damper 0-50%

C= Economizer, Dry Bulb 0-100%withoutBarometric Relief

E= Economizer, Reference Enthalpy 0-100%without Barometric Relief

G = Economizer, Comparative Enthalpy 0-100%without Barometric Relief

J = Downflow Low Leak Economizer, Dry Bulbw/o Barometric Relief

K= Downflow Low Leak Economizer, Dry BulbW/ Barometric Relief

L = Downflow Low Leak Economizer,Reference Enthalpy w/o Barometric Relief

M = Downflow Low Leak Economizer,Reference Enthalpy, W/ Barometric Relief

N = Downflow Low Leak Economizer,Comparative Enthalpy w/o Barometric Relief

P = Downflow Low Leak Economizer,Comparative Enthalpy, W/ Barometric Relief

Digit 15— Supply Fan/Drive Type/Motor0 = Standard Motor1 = Oversized Motor

Digit 16— Access

Not Used

Digit 17— Condenser Coil Protection

0 = Standard Coil4 = CompleteCoat™ Condenser Coil

Digit 18— Through The BaseProvisions0 = No Through The Base ProvisionsA = Through The Base Electric

Digit 19— Disconnect Switch

0 = No Disconnect1 = Unit Mounted Non-Fused DisconnectSwitch1

Digit 20-24

Not Used

Digit 25— SystemMonitoringControls0 = No Monitoring ControlsA = Condensate Drain Pan Overflow Switch

Digit 26— SystemMonitoringControls0 = No Economizer Fault Detection andDiagnostics (FDD)B = Economizer Fault Detection andDiagnostics (FDD)4

Model Number NotesNotes:

1. Must be ordered with Through the- Base Electrical option.2. All Factory Installed Options are Built-to-Order. Check order services for estimated production cycle.3. Factory installed economizers only available in downflow configuration.4. Fault Detection and Diagnostics (FDD) is available on Low Leak Economizers only.5. Unit will operate reliably at 400V.

6 RT-SVX057E-EN

General InformationWWAARRNNIINNGG

FFiibbeerrggllaassss WWooooll!!EExxppoossuurree ttoo ggllaassss wwooooll ffiibbeerrss wwiitthhoouutt aallllnneecceessssaarryy PPPPEE eeqquuiippmmeenntt ccoouulldd rreessuulltt iinn ccaanncceerr,,rreessppiirraattoorryy,, sskkiinn oorr eeyyee iirrrriittaattiioonn,, wwhhiicchh ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. DDiissttuurrbbiinngg tthheeiinnssuullaattiioonn iinn tthhiiss pprroodduucctt dduurriinngg iinnssttaallllaattiioonn,,mmaaiinntteennaannccee oorr rreeppaaiirr wwiillll eexxppoossee yyoouu ttoo aaiirrbboorrnneeppaarrttiicclleess ooff ggllaassss wwooooll ffiibbeerrss aanndd cceerraammiicc ffiibbeerrsskknnoowwnn ttoo tthhee ssttaattee ooff CCaalliiffoorrnniiaa ttoo ccaauussee ccaanncceerrtthhrroouugghh iinnhhaallaattiioonn..YYoouu MMUUSSTT wweeaarr aallll nneecceessssaarryy PPeerrssoonnaall PPrrootteeccttiivveeEEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg gglloovveess,, eeyyee pprrootteeccttiioonn,,aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr,, lloonnggsslleeeevveess aanndd ppaannttss wwhheenn wwoorrkkiinngg wwiitthh pprroodduuccttssccoonnttaaiinniinngg ffiibbeerrggllaassss wwooooll..

PPrreeccaauuttiioonnaarryy MMeeaassuurreess::

•• AAvvooiidd bbrreeaatthhiinngg ffiibbeerrggllaassss dduusstt..

•• UUssee aa NNIIOOSSHH aapppprroovveedd dduusstt//mmiisstt rreessppiirraattoorr..

•• AAvvooiidd ccoonnttaacctt wwiitthh tthhee sskkiinn oorr eeyyeess.. WWeeaarrlloonngg--sslleeeevveedd,, lloooossee--ffiittttiinngg ccllootthhiinngg,, gglloovveess,,aanndd eeyyee pprrootteeccttiioonn..

•• WWaasshh ccllootthheess sseeppaarraatteellyy ffrroomm ootthheerr ccllootthhiinngg;;rriinnssee wwaasshheerr tthhoorroouugghhllyy..

•• OOppeerraattiioonnss ssuucchh aass ssaawwiinngg,, bblloowwiinngg,, tteeaarr--oouutt,, aanndd sspprraayyiinngg mmaayy ggeenneerraattee ffiibbeerrccoonncceennttrraattiioonnss rreeqquuiirriinngg aaddddiittiioonnaallrreessppiirraattoorryy pprrootteeccttiioonn.. UUssee tthhee aapppprroopprriiaatteeNNIIOOSSHH aapppprroovveedd rreessppiirraattoorr..

FFiirrsstt AAiidd MMeeaassuurreess::

•• EEyyee CCoonnttaacctt -- FFlluusshh eeyyeess wwiitthh wwaatteerr ttoorreemmoovvee dduusstt.. IIff ssyymmppttoommss ppeerrssiisstt,, sseeeekkmmeeddiiccaall aatttteennttiioonn..

•• SSkkiinn CCoonnttaacctt -- WWaasshh aaffffeecctteedd aarreeaass ggeennttllyywwiitthh ssooaapp aanndd wwaarrmm wwaatteerr aafftteerr hhaannddlliinngg..

Unit InspectionTo protect against loss due to damage incurred intransit, perform inspection immediately upon receipt ofthe unit.

Exterior InspectionIf the job site inspection reveals damage or materialshortages, file a claim with the carrier immediately.Specify the type and extent of the damage on the bill oflading before signing. Notify the appropriate salesrepresentative.

IImmppoorrttaanntt:: Do not proceed with installation of adamaged unit without salesrepresentative’s approval.

• Visually inspect the complete exterior for signs ofshipping damages to unit or packing material.

• Verify that the nameplate data matches the salesorder and bill of lading.

• Verify that the unit is properly equipped and thereare no material shortages.

• Verify that the power supply complies with the unitnameplate specifications.

Inspection for Concealed DamageVisually inspect the components for concealed damageas soon as possible after delivery and before it isstored.

If concealed damage is discovered:

• Notify the carrier’s terminal of the damageimmediately by phone and by mail.

• Concealed damage must be reported within 15days.

• Request an immediate, joint inspection of thedamage with the carrier and consignee.

• Stop unpacking the unit.

• Do not remove damaged material from receivinglocation.

• Take photos of the damage, if possible.

• The owner must provide reasonable evidence thatthe damage did not occur after delivery.

Unit StorageTake precautions to prevent condensate from forminginside the unit’s electrical compartments and motors if:

• The unit is stored before it is installed; or,

• The unit is set on the roof curb, and temporary heatis provided in the building. Isolate all side panelservice entrances and base pan openings (e.g.,conduit holes, S/A and R/ A openings, and flueopenings) from the ambient air until the unit isready for start-up.

NNoottee:: Do not use the unit’s heater for temporary heatwithout first completing the start-up.

The manufacturer will not assume any responsibilityfor equipment damage resulting from condensateaccumulation on the unit’s electrical and/or mechanicalcomponents.

RT-SVX057E-EN 7

Unit DescriptionBefore shipment, each unit is leak tested, dehydrated,charged with refrigerant and compressor oil, and runtested for proper control operation.

Direct-drive, vertical discharge condenser fans areprovided with built-in thermal overload protection. Thestages of capacity control for these units are achievedby starting the Economizer Control Actuator (ECA).

Economizer Control ActuatorElectromechanical ControlThe ECA monitors the mixed air temperature, return airtemperature, minimum position setpoint (local orremote), power exhaust setpoint, CO2 setpoint, CO2,and ambient dry bulb/ enthalpy sensor or comparativehumidity (return air humidity against ambienthumidity) sensors, if selected, to control dampers to anaccuracy of ±5 percent of stroke. The actuator is springreturned to the closed position any time that power islost to the unit. It is capable of delivering up to 25 in﹒lbof torque and is powered by 24 Vac.

JADE Economizer Control - Low LeakEconomizer (LLE) OnlyThe JADE controller is a standalone economizercontroller that provides outdoor air dry-bulbeconomizer control standard. With optional Sylk Bussensors, the controller can provide comparative orreference enthalpy control. Dampers are controlled toan accuracy of ±3.2 percent of stroke. The actuator isspring returned to the closed position any time thatpower is lost to the actuator. It is capable of deliveringup to 44in﹒lb of torque and is powered by 24 Vac.

System Input Devices and FunctionsThe unit must have a thermostat input in order tooperate.

The descriptions of the following basic input devicesused within the unit are to acquaint the operator withtheir function as they interface with the variousfeatures. Refer to the unit’s electrical schematic for thespecific device connections. The following controls areavailable from the factory for field installation.

Drain Pan Condensate Overflow Switch(Optional)This input incorporates the Condensate OverflowSwitch (COF) mounted on the drain pan. When thecondensate level reaches the trip point, the COF relayenergizes and opens the 24 Vac control circuit,disabling the unit. A delay timer prevents the unit fromstarting for 3 minutes.

Phase MonitorThe Phase Monitor is a three-phase line monitormodule that protects against phase loss, phase reversal

and phase unbalance. It is intended to protectcompressors from reverse rotation. It has an operatinginput voltage range of 190–600 Vac, and LED indicatorsfor ON and FAULT. There are no field adjustments andthe module will automatically reset from a faultcondition.

Discharge Line Thermostat ControlThe high pressure controls and the discharge linethermostat signals are wired in series and connected tothe safety input of the LSD. The compressor contactorcoil is connected to the ‘CC’ terminal of the LSD. If thehigh pressure control switch or the discharge linethermostat is open, the 24 Vac signal to the SI input ofthe LSD is interrupted and the compressor contactorcoil supply is disabled by the LSD. It has an automaticlockout.

Power Exhaust Control (Optional)The power exhaust fan is started whenever the positionof the economizer dampers meets or exceed the powerexhaust setpoint when the indoor fan is on.

The setpoint panel is located in the return air sectionand is factory set at 25% (50% for LLE).

To configure the LLE controller, set EXH1 SET (or EXH1L & EXH1 H with two-speed fan) in the SETPOINTSmenu. 2-speed fan mode requires AUX2 I set as W.

Evaporator Frost Control (Optional)This input incorporates the Frostat™ control (FOS)mounted in the indoor coil and can be activated byclosing a field supplied contact installed in parallel withthe FOS.

If this circuit is open before the compressor is started,the compressor will not be allowed to operate. Anytimethis circuit is opened for 5 continuous seconds duringcompressor operation, the compressor for that circuitis immediately turned “Off”. The compressor will notbe allowed to restart for a minimum of 3 minutesshould the FOS close.

Locking Safety Device with Anti-Short CycleTimerThis device monitors compressor safety switch trips toprevent short cycling, protecting the compressor. Amanual reset is required after a fourth safety switch tripwithin a 6 hour period.

Sensors

High Temperature Sensor (BAYFRST003*)This sensor connects to the Emergency Stop Input onthe LTB and provides high limit “shutdown” of the unit.The sensor is used to detect high temperatures due tofire in the air conditioning or ventilation ducts. Thesensor is designed to mount directly to the sheet metalduct. Each kit contains two sensors. The return air ductsensor (X1310004001) is set to open at 135°F.

GGeenneerraall IInnffoorrmmaattiioonn

8 RT-SVX057E-EN

The supply air duct sensor (X1310004002) is set to openat 240°F. The control can be reset after the temperaturehas been lowered approximately 25°F below the cutoutsetpoint.

Thermostat (TCONT802AS32DA)This thermostat is a multi-stage 3 heat/2 cool,autochangeover digital display thermostat. It is aprogrammable thermostat, and a 7-day programmablestat with night setback shall be available. In addition, itis wall mounted.

Thermostat (TCONT402AN32DA)This thermostat is a multi-stage 3 heat/2 cool, autochangeover digital display thermostat. It is anonprogrammable, wall-mounted thermostat, and itcan be used for economizer operation.

CO2 SensorThis optional sensor can be added for Demand ControlVentilation (DCV) functionality. On units with a low leakeconomizer, configure the JADE controller by settingthe following parameters:

Setpoints MenuDCV SET = desired CO2 ppm to start DCV

VENTMAX = desired maximum position w/DCV andoccupied status (2-speed applications require LO & HIsettings)

VENTMIN = desired minimum position w/DCV andoccupied status (2-speed applications require LO & HIsettings)

ADVANCED SETUP Menu:

CO2 ZERO = set to detector's start level

CO2 SPAN = detector's max level minus start level

Attach the sensor to the CO2 and "R" terminals (atcustomer connections).

NNoottee:: When using any 0-10 Vdc CO2 sensor with theJADE you will need to set CO2 ZERO to 400 ppmand the CO2 SPAN to 1600 ppm in theADVANCED SETUP menu.

Occupancy SensorA customer-supplied occupancy sensor can also beadded to provide damper control based on occupied/unoccupied conditions.

Low Leak Economizer UnitsTo configure the JADE controller, set:

SYSTEM SETUP menu: OCC = INPUT

Attach the occupancy sensor to the OCC SENSOR wireand "R" terminal (at customer connections). Theoccupancy sensor must utilize a normally open contactfor proper operation.

If an occupancy sensor is not used, another option tocontrolling occupied and unoccupied status is to usethe 'G' input (fan is running). Connect the G input to theOCC SENSOR wire (at customer connections). Thecontroller will then operate in the occupied mode everytime the indoor fan is running.

Initiation of Operating Modes - JADEControllerThe JADE controller is able to initiate the followingmodes: Compressor, Economizer, Fans, HeatingSystem, and Cooling System.

The Compressor mode is initiated by either the OATgoing above the DRYBLB SET setting or by thethermostat initiating a call to cool when the damper isat 100% open.The Economizer mode is controlled bythe MAT getting above the MAT SET setting while theOAT is below the DRYBLB SET setting.

While the fans are not controlled by the controller, theFan mode is dependent on what state the system is in(OCC or Y1 states will cause the damper to go to a LOWfan speed damper setting, while Y2 or W states willcause the controller to open the damper to the HIGHfan speed damper setting). The Heating System moderequires an input to the AUX2-1 terminal from thethermostat, and the Cooling System mode requires aninput to the Y2 IN and/or the Y1 IN terminals from thethermostat.

GGeenneerraall IInnffoorrmmaattiioonn

RT-SVX057E-EN 9

Dimensional Data

Below figure illustrates the minimum operating andservice clearances for either a single or multiple unitinstallation. These clearances are the minimumdistances necessary to assure adequate serviceability,cataloged unit capacity, and peak operating efficiency.

Providing less than the recommended clearances mayresult in condenser coil starvation, “short-circuiting” ofexhaust and economizer airflows, or recirculation ofhot condenser air.

Figure 1. Typical installation clearance for single and multiple unit applications

END TO ENDNOTE 2, 3

SIDE BY SIDENOTE 2

NOTE 1

3’ 0”

4’ 0”5’ 0”

NOTES:1. FOR HORIZONTAL DISCHARGE UNIT,THIS MEASUREMENT IS REDUCED TO 1’ 6”TO MINIMIZE DUCT EXTENSION.

2. WHEN EQUIPPED WITH ECONOMIZEROR BAROMETRIC RELIEF DAMPER,CLEARANCE DISTANCE IS TO BE MEASURED FROM PROTRUDING HOODINSTEAD OF BASE.

3. CLEARANCE IS THE SAME IF ANYUNIT IS ROTATED 180°.

4. ADDITIONAL CLEARANCE REQUIRED WHEN BAROMETRIC DAMPER ORECONOMIZER IS INSTALLED.

SINGLE UNIT

7’ 0”

6’ 0”

3’ 0” WITHOUT ECONOMIZER5’ 8” WITH ECONOMIZER

10 RT-SVX057E-EN

Figure 2. Cooling with optional electrical heat — overview (electric/electric)

DISCONNECT SWITCH ACCESS

CONDENSATE DRAIN CONNECTION

Figure 3. Cooling with optional electrical heat — front and side views (electric/electric)

NOTES:1. THROUGH THE BASE ELECTRICAL IS NOT STANDARD ON ALL UNITS.2. VERIFY WEIGHT, CONNECTION, AND ALL DIMENSIONS WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.

42.004”

42.558”

76.814”

20.735”

15.860”

7.860”

47.934”44.675”

43.675”

42.175”

DDiimmeennssiioonnaall DDaattaa

RT-SVX057E-EN 11

Figure 4. Cooling with optional electrical heat and electric/electric units —bottom view

RETURN

SUPPLY

25-1/8”

17-3/8”15-3/8”

20-11/16”

12-1/8” 5-19/32”

6-25/32”

17-3/4”

27-1/8”

10-7/8”

7-1/32”

5-19/32”25-5/8”

12-27/32”

19-3/8”

Figure 5. Cooling with optional electrical heat and electric/electric units — back view (horizontal configuration)

SUPPLY

RETURN

11.478”

25.125”

7.393”

5.592”

10.500”

40.717”

16.750”


12 RT-SVX057E-EN

Figure 6. Cooling with optional electrical heat and electric/electric units — roof curb

SUPPLY

RETURN

70.871”

1.500”

41.986”

14.000”3.548”

14.430”

3.000”

21.060”41.990”

32.188”

36.938”

15.188”

3.000” 70.875”

14.000”

Figure 7. Cooling with optional electrical heat and electric/electric units — downflow unit clearance

CLEARANCE

CLEARANCE 60”

CLEARANCE

CLEARANCE 48”

UNIT OUTLINE


RT-SVX057E-EN 13

Figure 8. Cooling with optional electrical heat and electric/electric units — barometric relief and economizer

BACK VIEW OF UNITRIGHT VIEW OF UNIT

ECONOMIZERFAN

BAROMETRIC RELIEF

BAROMETRIC RELIEF

47-15/16”

4-1/8”

13-13/32” 14-5/8”

11-29/32”

42”

7-31/32”

7-27/32”

3-9/32” 32-5/32”

76-13/16”

Figure 9. Cooling with optional electrical heat and electric/electric units — manual damper

MANUAL DAMPER HOOD

BACK VIEW OF UNITRIGHT VIEW OF UNIT

FAN

NOTE:VERIFY WEIGHT, CONNECTION, AND ALL DIMENSIONS WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.

12.045”

9.708”

7.223” 24.259”

76.814”47.934”


14 RT-SVX057E-EN

WeightsTable 1. Maximum unit and corner weights (lb) and center of gravity dimensions (in.) cooling with optional electric

heat (Electric/Electric) units only

Tons Unit ModelNo.

Weights (lb)(a) , (b) CornerWeights(c) Center of Gravity (in.)

Shipping Net A B C D Length Width

3 EBC036* 523 473 87 98 153 135 41 29

4 EBC048* 566 516 103 107 155 150 39 28

5 EBC060* 586 536 112 112 156 156 38 28

(a) Weights are approximate.(b) Weights do not include additional factory or field installed options/accessories.(c) Corner weights are given for information only.

Figure 10. Corner weights

CENTER OF GRAVITYLENGTH

CENTER OFGRAVITYWIDTH

Rigging

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Refer to Figure 11, p. 15 and for typical unit operatingweights rigging before proceeding.

1. Remove the shipping crate from around the unit.Do not remove the crating from the top of the unit.

2. Rig the unit as shown in Figure 11, p. 15. Attachadequate strength lifting slings to all four liftingbrackets in the unit base rail. Do not use cables,chains, or slings except as shown.

3. Install a lifting bar, as shown in Figure 11, p. 15, toprotect the unit and to facilitate a uniform lift. Theminimum distance between the lifting hook and thetop of the unit should be 7 feet.

4. Test-lift the unit to ensure it is properly rigged andbalanced, make any necessary rigging adjustments.

5. Lift the unit and position it into place.

6. Downflow units; align the base rail of the unit withthe curb rail while lowering the unit onto the curb.Make sure that the gasket on the curb is notdamaged while positioning the unit.

RT-SVX057E-EN 15

Figure 11. Rigging and center of gravity data

CENTER OF GRAVITYLENGTH

CENTER OF GRAVITYWIDTH

WWeeiigghhttss

16 RT-SVX057E-EN

InstallationUnit Foundation

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NNootteess::

• For units with optional CondensateOverflow Switch (COF) accessory kit, theswitch will not work properly if unit is notlevel or slightly sloped toward switch.

• To assure proper condensate flow duringoperation the unit and the curb must belevel.

If the unit is installed at ground level, elevate it abovethe snow line. Provide concrete footings at eachsupport location with a “full perimeter” supportstructure or a slab foundation for support. Refer toTable 1, p. 14 for the unit’s operating and point loadingweights when constructing a footing foundation.

If anchoring is required, anchor the unit to the slabusing hold down bolts or isolators. Isolators should beinstalled to minimize the transmission of vibrationsinto the building.

For rooftop applications, if anchoring is required,anchor the unit to the roof with hold-down bolts orisolators.

Check with a roofing contractor for properwaterproofing procedures.

DuctworkElbows with turning vanes or splitters arerecommended to minimize air noise due to turbulenceand to reduce static pressure.

When attaching the ductwork to the unit, provide awatertight flexible connector at the unit to prevent

operating sounds from transmitting through theductwork.

All outdoor ductwork between the unit and thestructure should be weather proofed after installation iscompleted.

NNoottee:: For sound consideration, cut only the holes in theroof deck for the ductwork penetrations. Do notcut out the entire roof deck within the curbperimeter.

If a Curb Accessory Kit is not used:

1. The ductwork can be attached directly to thefactory-provided flanges around the unit’s supplyand return air openings. Be sure to use flexible ductconnections at the unit.

2. For “built-up” curbs supplied by others, gasketsmust be installed around the curb perimeter flangeand the supply and return air opening flanges.

General Unit Requirements


The checklist listed below is a summary of the stepsrequired to successfully install a commercial unit. Thischecklist is intended to acquaint the installingpersonnel with what is required in the installationprocess. It does not replace the detailed instructionscalled out in the applicable sections of this manual.

☐ Check the unit for shipping damage and materialshortage; file a freight claim and notify appropriatesales representative.

☐ Verify correct model, options and voltage fromnameplate.

☐ Verify that the installation location of the unit willprovide the required clearance for properoperation.

☐ Assemble and install the roof curb (if applicable).Refer to the latest edition of the curb installersguide that ships with each curb kit.

☐ Fabricate and install ductwork; secure ductwork tocurb.

RT-SVX057E-EN 17

☐ Rigging the unit.

☐ Set the unit onto the curb; check for levelness.

☐ Ensure unit-to-curb seal is tight and without bucklesor cracks.

☐ Install and connect a condensate drain line to theevaporator drain connection.

Factory Installed Economizer• Ensure the economizer has been pulled out into the

operating position. Refer to the standard or low leakeconomizer Installation Instructions for properposition and setup.

• Install all access panels.

Controller Wiring Schematic - LLEFor additional information, go to the InstallationInstructions ACC-SVN203*-EN and ACC-SVN205*-EN.

Main Electrical Power Requirements☐ Verify that the power supply complies with the unit

nameplate specifications.

☐ Inspect all control panel components; tighten anyloose connections.

☐ Connect properly sized and protected power supplywiring to a field-supplied/ installed disconnectswitch and to the main power terminal block (HTB1)in the unit control panel.

☐ Install proper grounding wires to an earth ground.

NNoottee:: All field-installed wiring must comply with NECand applicable local codes.

Electric Heat Requirements• Verify that the power supply complies with the

electric heater specifications on the unit and heaternameplate.

• Inspect the heater junction box and control panel;tighten any loose connections.

• Check electric heat circuits for continuity.

• Low Voltage Wiring (AC and DC) Requirements.

• Install the zone thermostat, with or withoutswitching subbase.

• Connect properly sized control wiring to the propertermination points between the zone thermostatand the unit control panel.

Condensate Drain ConfigurationAn evaporator condensate drain connection isprovided on each unit. Refer to the unit overview figurein “Dimensional Data,” p. 9 for the appropriate drainlocation.

NNoottee:: Use 1-inch PVC pipe to connect to the drain panoutlet provided in the unit. This is a slip fit joint(no threads). Do not use PVC glue to connectcondensate drain, thread sealing compound orTeflon tape may be used.

A condensate trap must be installed at the unit due tothe drain connection being on the “negative pressure”side of the fan.

A condensate drain line must be connected to the P-Trap. Pitch the drain lines at least 0.5-inch for every 10feet of horizontal run to assure proper condensate flow.Do not allow the horizontal run to sag causing apossible doubletrap condition which could result incondensate backup due to “air lock”.

Filter InstallationEach unit ships with 2-inch filters installed. Thequantity of filters is determined by unit size. Access tothe filters is obtained by removing the filter accesspanel.

Refer to the unit Service Facts (shipped with each unit)for filter requirements

NNoottee:: Do not operate the unit without filters.

Field Installed Power WiringAn overall dimensional layout for the standard fieldinstalled wiring entrance into the unit is illustrated in“Dimensional Data,” p. 9. To insure the unit’s supplypower wiring is properly sized and installed, follow theguidelines outlined below.

NNoottee:: All field installed wiring must conform to NECguidelines as well as state and Local codes.

Verify that the power supply available is compatiblewith the unit’s nameplate ratings. The available supplypower must be within 10 percent of the rated voltagestamped on the nameplate. Use only copperconductors to connect the power supply to the unit.

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NNoottee:: If the unit is not equipped with an optionalfactory installed nonfused disconnect switch orcircuit breaker, a field supplied disconnect switchmust be installed at or near the unit inaccordance with the National Electrical Code(NEC latest edition).

IInnssttaallllaattiioonn

18 RT-SVX057E-EN

Main Unit PowerWWAARRNNIINNGG

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Standard WiringThe electrical service must be protected from overcurrent and short circuit conditions in accordance withNEC requirements.

Protection devices must be sized according to theelectrical data on the nameplate.

• If the unit is not equipped with an optional factoryinstalled nonfused disconnect switch, a fieldsupplied disconnect switch must be installed at ornear the unit in accordance with the NationalElectrical Code (NEC latest edition).

• Location of the applicable electrical serviceentrance is illustrated in “Dimensional Data,” p. 9.Complete the unit’s power wiring connections ontoeither; the main terminal block HTB1 inside the unitcontrol panel, the factory mounted nonfuseddisconnect switch (UCD), or the electric heatterminal block. Refer to the customer connectiondiagram that shipped with the unit for specifictermination points.

• Provide proper grounding for the unit in accordancewith local and national codes.

Optional TBUE Wiring (Through the BaseElectrical Option)• Location of the applicable electrical service is

illustrated below. Refer to the customer connectiondiagram that is shipped with the unit for specifictermination points. The termination points,depending on the customer option selected, wouldbe a factory mounted nonfused disconnect switch(see Figure 14, p. 22 ), the electric heat terminalblock (if equipped) or the main terminal block.

• Provide proper grounding for the unit in accordancewith local and national codes.

Figure 12. Through the base electrical option

TBUEHIGH VOLT.

TBUELOW VOLT.

Control Power TransformerThe 24-volt control power transformers are to be usedonly with the accessories called out in this manual.

Transformers rated greater than 50 Vac are equippedwith internal circuit breakers. If a circuit breaker trips,turn “Off” all power to the unit before attempting toreset it.

The transformer is located in the control panel. Thecircuit breaker is located on the left side of thetransformer and can be reset by pressing in on theblack reset button.

Controls using 24 VacBefore installing any connecting wiring, refer to“Dimensional Data,” p. 9 for the electrical accesslocations provided on the unit and Table 2, p. 19 for ACconductor sizing guidelines.

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1. Use copper conductors unless otherwise specified.

2. Ensure that the AC control wiring between the


RT-SVX057E-EN 19

controls and the unit’s termination point does notexceed three (3) ohms/conductor for the length ofthe run.

NNoottee:: Resistance in excess of 3 ohms per conductorcould cause component failure due toinsufficient AC voltage supply.

3. Be sure to check all loads and conductors forgrounds, shorts, and mis-wiring.

4. Do not run the AC low voltage wiring in the sameconduit with the high voltage power wiring.

5. Route low voltage wiring as per Figure 13, p. 19.

Table 2. Electromechanical thermostat 24 Vac conductors

Distance from Unit to Control RecommendedWire Size

000–460 feet 18 gauge

000–140 m 0.75 mm^2

461–732 feet 16 gauge

Figure 13. Conventional thermostat field wiring diagram

Voltage ImbalanceThree phase electrical power to the unit must meetstringent requirements for the unit to operate properly.Measure each leg (phase-to-phase) of the powersupply.

Each reading must fall within the utilization rangestamped on the unit nameplate. If any of the readingsdo not fall within the proper tolerances, notify thepower company to correct this situation beforeoperating the unit.

Excessive three phase voltage imbalance betweenphases will cause motors to overheat and eventuallyfail.

The maximum allowable voltage imbalance is 2percent. Measure and record the voltage betweenphases 1, 2, and 3 and calculate the amount ofimbalance as follows:

% Voltage Imbalance =

AV (Average Voltage) =

• V1, V2, V3 = Line Voltage Readings


20 RT-SVX057E-EN

• VD = Line Voltage reading that deviates the farthestfrom the average voltage.

Example: If the voltage readings of the supply powermeasured 221, 230, and 227, the average volts wouldbe:

• VD (reading farthest from average) = 221

• The percentage of Imbalance equals:

The 2.2 percent imbalance in this example exceeds themaximum allowable imbalance of 2.0 percent. Thismuch imbalance between phases can equal as much asa 20 percent current imbalance with a resultingincrease in motor winding temperatures that willdecrease motor life.

If the voltage imbalance is over 2 percent, notify theproper agencies to correct the voltage problem beforeoperating this equipment.

Electrical Phasing (Three Phase Motors)The compressor motor(s) and the supply fan motor areinternally connected for the proper rotation when theincoming power supply is phased as A, B, C.

Proper electrical supply phasing can be quicklydetermined and corrected before starting the unit byusing an instrument such as an Associated ResearchModel 45 Phase Sequence Indicator and following thesteps below:

WWAARRNNIINNGGHHaazzaarrddoouuss VVoollttaaggee!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. VVeerriiffyy tthhaatt nnooppoowweerr iiss pprreesseenntt wwiitthh aa vvoollttmmeetteerr..

1. Turn the field supplied disconnect switch thatprovides power to the main power terminal block orto the “Line” side of the optional factory mounteddisconnect switch to the “Off” position.

2. Connect the phase sequence indicator leads to theterminal block or to the “Line” side of the optionalfactory mounted disconnect switch as follows:

• Black (phase A) to L1

• Red (phase B) to L2

• Yellow (phase C) to L3

3. Close the field supplied main power disconnectswitch or circuit protector switch that provides thesupply power to the unit.

WWAARRNNIINNGGLLiivvee EElleeccttrriiccaall CCoommppoonneennttss!!FFaaiilluurree ttoo ffoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnsswwhheenn eexxppoosseedd ttoo lliivvee eelleeccttrriiccaall ccoommppoonneennttss ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..WWhheenn iitt iiss nneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee eelleeccttrriiccaallccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd eelleeccttrriicciiaannoorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn pprrooppeerrllyy ttrraaiinneeddiinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss ppeerrffoorrmmtthheessee ttaasskkss..

4. Observe the ABC and CBA phase indicator lights onthe face of the sequencer. The ABC indicator lightwill glow if the phase is ABC. If the CBA indicatorlight glows, open the disconnect switch or circuitprotection switch and reverse any two power wires.

5. Restore the main electrical power and recheck thephasing. If the phasing is correct, open thedisconnect switch or circuit protection switch andremove the phase sequence indicator.

Compressor Crankcase Heaters

NNOOTTIICCEECCoommpprreessssoorr FFaaiilluurree!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinnccoommpprreessssoorr ffaaiilluurree..UUnniitt mmuusstt bbee ppoowweerreedd aanndd ccrraannkkccaassee hheeaatteerrsseenneerrggiizzeedd aatt lleeaasstt 88 hhoouurrss BBEEFFOORREE ccoommpprreessssoorrssaarree ssttaarrtteedd..

Each compressor can be equipped with a crankcaseheater. The proper operation of the crankcase heater isimportant to maintain an elevated compressor oiltemperature during the “Off” cycle to reduce oilfoaming during compressor starts. Oil foaming occurswhen refrigerant condenses in the compressor andmixes with the oil. In lower ambient conditions,refrigerant migration to the compressor could increase.

When the compressor starts, the sudden reduction incrankcase pressure causes the liquid refrigerant to boilrapidly causing the oil to foam. This condition coulddamage compressor bearings due to reducedlubrication and could cause compressor mechanicalfailures.

Before starting the unit in the “Cooling” mode, set thesystem switch to the “Off” position and turn the mainpower disconnect to the “On” position and allow thecrankcase heater to operate a minimum of 8 hours.

Before closing the main power disconnect switch,insure that the “System”selection switch is in the “Off”position and the “Fan” selection switch is in the “Auto”position.


RT-SVX057E-EN 21

Close the main power disconnect switch and the unitmounted disconnect switch, if applicable.

ChecklistUse the following checklist in conjunction with thegeneral checklist (“General Unit Requirements,” p. 16)to ensure that the unit is properly installed and readyfor operation.


☐ Check all electrical connections for tightness and“point of termination” accuracy.

☐ Verify that the condenser airflow is unobstructed.

☐ Verify that the condenser fan and indoor blowerturn freely without rubbing and are properlytightened on the shafts.

☐ Check the supply fan belts for proper tension andthe fan bearings for sufficient lubrication. If thebelts require adjustment, or if the bearings needlubricating, refer to the maintenance section of thismanual for instructions.

☐ Verify that a condensate trap is installed and thepiping is properly sized and pitched.

☐ Verify that the correct size and number of filters arein place.

☐ Inspect the interior of the unit for tools and debrisand install all panels in preparation for starting theunit.

Factory-Mounted Unit OptionsUnit Disconnect (FIYUDC)

WWAARRNNIINNGGHHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr aanndd ddiisscchhaarrggeeccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg ccoouulldd rreessuulltt iinn ddeeaatthh oorrsseerriioouuss iinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunnccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt// ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. VVeerriiffyy wwiitthh aaCCAATT IIIIII oorr IIVV vvoollttmmeetteerr rraatteedd ppeerr NNFFPPAA 7700EE tthhaatt aallllccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..


IImmppoorrttaanntt:: All phases of this installation must complywith NATIONAL, STATE, and LOCALCODES. In addition to local codes, theinstallation must comply with NationalElectric Code - ANSI/NFPA NO. 70 LATESTREVISION.

1. Field connections are made by first removing thecompressor access panel on the front of the unit.Unscrew the assembly around the outside of thedisconnect switch. This assembly is located in thecondenser section of the unit.

Both high and low voltage power can be routedthrough the base or through the front corner postwhere the disconnect enclosure is mounted. Thehole is sized for 1 1/2–in. conduit.

2. If the conduit required for your application is largerthan 1 1/2–in., remove the termination plate andconnect to the larger hole using field suppliedreducing washers.

3. Route the power wires and ground conductorthrough conduit and into the bottom of the factoryinstalled disconnect switch. Connect the powerconductors to the lugs provided. Connect theground wire to the unit ground lug.

NNoottee:: Wire size for the length of run should bedetermined using the circuit ampacity foundon the unit nameplate and the N.E.C.

4. Route low voltage (class II), control wiring throughhole in base of unit but not through high voltageconduit (refer to Figure 12, p. 18 for high and lowvolt. conduits location). Feed control wiring throughbushing provided on side panel. Route wiresthrough loose wire ties provided.

5. Tighten the wire ties. Secure the excess wire bundleunder the wire ties in the outdoor section. Do notleave excess wire in the electrical enclosure. Usethe unit wiring diagram to make the low voltageconnections.


22 RT-SVX057E-EN

Figure 14. Field wiring routing - factory installeddisconnect switch


RT-SVX057E-EN 23

Pre StartVerifying Proper Air Flow (Unitswith Belt Drive Indoor Fan)Much of the systems performance and reliability isclosely associated with, and dependent upon havingthe proper airflow supplied both to the space that isbeing conditioned and across the evaporator coil.

The indoor fan speed is changed by opening or closingthe adjustable motor sheave.

Before starting the SERVICE TEST, set the minimumposition setpoint for the economizer to 0% using thesetpoint potentiometer located on the EconomizerControl (ECA), if applicable.

Electromechanical Controls –Test ProcedureSee unit schematic for correct wire numbers.

FFaann TTeesstt aanndd MMiinniimmuumm VVeennttiillaattiioonn.. Connect redthermostat wire (R) to black thermostat wire (G).

EEccoonnoommiizzeerr CCoooolliinngg. Connect a jumper wire acrossOAT on Economizer Control (ECA).

Connect red thermostat (R) wire to yellow thermostatwire (Y1).

CCooooll 11.. Connect red thermostat wire (R) to yellowthermostat wire (Y1).

CCooooll 22.. Connect red thermostat wire (R) to yellowthermostat wire (Y2).

HHeeaatt 11.. Connect red thermostat wire (R) to brownthermostat wire (W1).

HHeeaatt 22.. Connect red thermostat wire (R) to brownthermostat wire (W2).

24 RT-SVX057E-EN

Start UpStandard Economizer Start-Up1. Set the minimum position setpoint for the

economizer to the required percentage of minimumventilation using the setpoint potentiometer locatedon the Economizer Control (ECA).

The economizer will drive to its minimum positionsetpoint, exhaust fans (if applicable) may start atrandom, and the supply fan will start when theSERVICE TEST is initiated.

The Exhaust Fan will start anytime the economizerdamper position is equal to or greater than theexhaust fan setpoint.

2. Verify that the dampers stroked to the minimumposition.

3. Verify that the dampers stroked to the full openposition.

4. To stop the SERVICE TEST, turn the main powerdisconnect switch to the “Off” position or proceedto the next component start-up procedure. Removeelectro mechanical test mode connections (ifapplicable).

LLE Controls Test ProcedureSee unit schematic for correct wire numbers.

Use the CHECKOUT menu in the InstallationInstructions to test the damper operation and anyconfigured outputs. Only items that are configured areshown in the Checkout menu.

To Perform Checkout Tests:

1. Scroll to the desired test in the checkout menuusing the and buttons.

2. Press the button to select the item.

3. “RUN?” is displayed.

4. Press to start the test.

5. The unit pauses and then displays “IN PROGRESS”.

6. When the test is complete, “DONE” appears.

7. When all parameters have been tested, press(Menu Up) to end the test (e.g. turn off the relay).

NNootteess::

• The checkout tests can all be performed atthe time of installation or any time duringthe operation of the system.

• JADE will be in "set up" mode for the first 60minutes after powered. If OA sensor or SylkBus device (sensor or actuator) isdisconnected during the set up mode, theJADE will not alarm that failure. The MAsensor is a system "critical" sensor, if theMA sensor is removed during the set upmode, the JADE will alarm. After 60 minutesthe JADE controller will change to operationmode and all components removed or failedwill alarm in the operation mode.

• Upon power up (or after a power outage orbrownout), the JADE controller modulebegins a 5 minute power up delay beforeenabling mechanical cooling.

Compressor Start-Up1. Attach a set of service gauges onto the suction and

discharge gauge ports for each circuit. Refer to therefrigerant circuit illustration in the Service Facts.

Using the Service Test Guide, perform the propertest mode connections.

SSccrroollll CCoommpprreessssoorrss

a. Once each compressor has started, verify thatthe rotation is correct. If wired correctly thesuction pressure should drop and the dischargepressure should rise. If a scroll compressor isrotating backwards, it will not pump and a loudrattling sound can be observed.

b. If the electrical phasing is correct, beforecondemning a compressor, interchange any twoleads (at the compressor Terminal block) tocheck the internal phasing. Refer to thefollowing illustration for the compressorterminal/phase identification. Do not allow thecompressor to operate backwards for more than5 seconds. Operation for a period of time longerthan this will result in compressor damage.

NNoottee:: Copeland SXA scroll compressors forR410A units use Trane OIL00094.Compressor types and appropriate oilcharge is listed in the following tables.

RT-SVX057E-EN 25

Table 3. Compressor types

Tonnage Compressor 1

EB*036 SXA031

EB*048 SXA042

EB*060 SXA051

Table 4. POE Oil recharge amount (fl. oz.)

Tonnage Compressor 1

EB*036 21

EB*048 38

EB*060 38

2. After the compressor and condenser fan havestarted and operated for approximately 30 minutes,observe the operating pressures. Compare theoperating pressures to the operating pressure curvein the Service Facts.

3. Check system subcooling. Follow the instructionlisted on the subcooling charging curve in theService Facts.

4. Repeat Step 1 through Step 3 for each refrigerantcircuit.

5. To stop the SERVICE TEST, turn the main powerdisconnect switch to the “Off” position or proceedto the next component start-up procedure. Removeelectromechanical test mode connections (ifapplicable).

Heating Start-Up1. Clamp an amp meter around one of 1st stage heater

power wires at the heater contactor.

2. Verify that the heater stage is operating properly.

3. Clamp an amp meter around one of 2nd stageheater power wires at the heater contactor (ifapplicable).

4. Verify that the heater stage is operating properly.

5. To stop the SERVICE TEST, turn the main powerdisconnect switch to the “Off” position or proceedto the next component start-up procedure. Removeelectromechanical test mode connections.

Final System Set UpAfter completing all of the pre-start and startupprocedures outlined in the previous sections (i.e.,operating the unit in each of its modes through allavailable stages of cooling and heating), perform thesefinal checks before leaving the unit:

☐ Program the Night Setback (NSB) panel (ifapplicable) for proper unoccupied operation. Referto the programming instructions for the specificpanel.

☐ Verify that the Remote panel “System” selectionswitch, “Fan” selection switch, and “ZoneTemperature” settings for automatic operation arecorrect.

☐ Inspect the unit for misplaced tools, hardware, anddebris.

☐ Verify that all exterior panels including the controlpanel doors and condenser grilles are secured inplace.

☐ Close the main disconnect switch or circuitprotector switch that provides the supply power tothe unit’s terminal block or the unit mounteddisconnect switch.

SSttaarrtt UUpp

26 RT-SVX057E-EN

MaintenanceMake sure all personnel are standing clear of the unitbefore proceeding. The system components will startwhen the power is applied.

Fan Belt Adjustment-Belt DriveUnits

WWAARRNNIINNGGRRoottaattiinngg CCoommppoonneennttss!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouullddrreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinngg aanndd ssllaasshhiinnggtteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouussiinnjjuurryy..DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmootteeddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerrlloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerrccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

The fan belts must be inspected periodically to assureproper unit operation. Replacement is necessary if thebelts appear frayed or worn. Units with dual beltsrequire a matched set of belts to ensure equal beltlength.

When removing or installing the new belts, do notstretch them over the sheaves. Loosen the belts usingthe belt tension adjustment bolts on the motormounting base.

Once the new belts are installed, using a Browning orGates tension gauge (or equivalent), adjust the belttension as follows:

1. To determine the appropriate belt deflection:

a. Measure the center-to-center shaft distance (ininches) between the fan and motor sheaves.

b. Divide the distance measured in Step 1a by 64;the resulting value represents the amount ofbelt deflection that corresponds to the properbelt tension.

2. Set the large O-ring on the belt tension gauge at the

deflection value determined in Step 1b.

3. Set the small O-ring at zero on the force scale of thegauge plunger.

4. Place the large end of the gauge at the center of thebelt span; then depress the gauge plunger until thelarge O-ring is even with the top of the next belt oreven with a straightedge placed across the fan andmotor sheaves.

5. Remove the belt tension gauge. The small O-ringnow indicates a number other than zero on theplunger’s force scale. This number represents theforce (in pounds) required to give the neededdeflection.

6. Compare the “force” scale reading (Step 5) with theappropriate “force” value listed in the Belt tensiontable. If the “force” reading is outside the range,readjust the belt tension.

NNoottee:: Actual belt deflection “force” must notexceed the maximum “force” value shown inthe Belt tension measurement and deflectionranges table.

7. Recheck the belt tension at least twice during thefirst 2 to 3 days of operation. Belt tension maydecrease until the new belts are “run in”.

Figure 15. Belt tension gauge

RT-SVX057E-EN 27

Table 5. Belt tension measurement and deflection ranges (in./lb.)

Belts CrossSection

Smallest SheaveDiameter Range

(in.)RPM Range

Deflection Force (lb)

Super Gripbelts and UnnotchedGripbands

Gripnotch Belts andNotched Gripbands

Used Belt New Belt Used Belt New Belt

A, AX

3.0–3.61000-2500 3.7 5.5 4.1 6.1

2501-4000 2.8 4.2 3.4 5.0

3.8–4.81000-2500 4.5 6.8 5.0 7.4

2501-4000 3.8 5.7 4.3 6.4

5.0–7.01000-2500 5.4 8.0 5.7 8.4

2501-4000 4.7 7.0 5.1 7.6

Monthly MaintenanceBefore completing the following checks, turn the unitOFF and lock the main power disconnect switch open.


FiltersInspect the return air filters. Clean or replace them ifnecessary. Refer to the unit Service Facts for filterinformation.

Condensate Overflow SwitchDuring maintenance, the switch float (black ring) mustbe checked to ensure free movement up and down.

Cooling Season☐ Check the unit’s drain pans and condensate piping

to ensure that there are no blockages.

☐ Inspect the evaporator and condenser coils for dirt,bent fins, etc. If the coils appear dirty, clean themaccording to the instructions described in “CoilCleaning” later in this section.

☐ Manually rotate the condenser fans to ensure freemovement and check motor bearings for wear.Verify that all of the fan mounting hardware is tight.

☐ Inspect the F/A-R/A damper hinges and pins toensure that all moving parts are securely mounted.Keep the blades clean as necessary.

WWAARRNNIINNGGRRoottaattiinngg CCoommppoonneennttss!!FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinnggccoouulldd rreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinnggaanndd ssllaasshhiinngg tteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinnddeeaatthh oorr sseerriioouuss iinnjjuurryy..DDuurriinngg iinnssttaallllaattiioonn,, tteessttiinngg,, sseerrvviicciinngg aannddttrroouubblleesshhoooottiinngg ooff tthhiiss pprroodduucctt iitt mmaayy bbeenneecceessssaarryy ttoo wwoorrkk wwiitthh lliivvee aanndd eexxppoosseeddrroottaattiinngg ccoommppoonneennttss.. HHaavvee aa qquuaalliiffiieedd oorrlliicceennsseedd sseerrvviiccee iinnddiivviidduuaall wwhhoo hhaass bbeeeennpprrooppeerrllyy ttrraaiinneedd iinn hhaannddlliinngg eexxppoosseedd rroottaattiinnggccoommppoonneennttss,, ppeerrffoorrmm tthheessee ttaasskkss..

NNOOTTIICCEEEEqquuiippmmeenntt DDaammaaggee!!FFoorrcciibbllyy ttuurrnniinngg tthhee mmoottoorr sshhaafftt ccaann ddaammaaggeetthhee ggeeaarr ttrraaiinn aanndd mmoottoorr bbeeyyoonndd rreeppaaiirr..NNeevveerr ttuurrnn tthhee mmoottoorr sshhaafftt bbyy hhaanndd oorr wwiitthh aawwrreenncchh..

☐ Verify that all damper linkages move freely;lubricate with white grease, if necessary.

☐ Check supply fan motor bearings; repair or replacethe motor as necessary.

☐ Check the fan shaft bearings for wear. Replace thebearings as necessary.

☐ Check the supply fan belt(s). If the belts are frayedor worn, replace them. Refer to the “Fan BeltAdjustment-Belt Drive Units,” p. 26 for beltreplacement and adjustments.

☐ Verify that all wire terminal connections are tight.

☐ Remove any corrosion present on the exteriorsurfaces of the unit and repaint these areas.

☐ Generally inspect the unit for unusual conditions (e.g., loose access panels, leaking piping connections,etc.)

MMaaiinntteennaannccee

28 RT-SVX057E-EN

☐ Make sure that all retaining screws are reinstalled inthe unit access panels once these checks arecomplete.

☐ With the unit running, check and record thefollowing:

– ambient temperature

– compressor oil level (each circuit)

– compressor suction and discharge pressures(each circuit)

– superheat and subcooling (each circuit)

Record this data on an “operator’s maintenance log”like the one shown in Sample maintenance log table inFinal Process Section. If the operating pressuresindicate a refrigerant shortage, measure the systemsuperheat and system subcooling. For guidelines, referto “Compressor Start-Up,” p. 24.

IImmppoorrttaanntt:: Do not release refrigerant to theatmosphere! If adding or removingrefrigerant is required, the servicetechnician must comply with all federal,state and local laws. Refer to generalservice bulletin MSCU-SB-1 (latest edition).

Heating Season☐ Inspect the unit’s air filters. If necessary, clean or

replace them.

☐ Check supply fan motor bearings; repair or replacethe motor as necessary.

☐ Inspect both the main unit control panel and heatsection control box for loose electrical componentsand terminal connections, as well as damaged wireinsulation. Make any necessary repairs.

☐ Verify that the electric heat system operatesproperly.

Coil CleaningRegular coil maintenance, including annual cleaningenhances the unit’s operating efficiency by minimizingthe following:

• Compressor head pressure and amperage draw

• Evaporator water carryover

• Fan brake horsepower

• Static pressure losses

• Airflow reduction

At least once each year, or more often if the unit islocated in a “dirty” environment, clean the condensercoils using the instructions outlined below. Be sure tofollow these instructions as closely as possible to avoiddamaging the coils.

WWAARRNNIINNGGHHaazzaarrddoouuss CChheemmiiccaallss!!FFaaiilluurree ttoo ffoollllooww tthhiiss ssaaffeettyy pprreeccaauuttiioonn ccoouullddrreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. CCooiill cclleeaanniinnggaaggeennttss ccaann bbee eeiitthheerr aacciiddiicc oorr hhiigghhllyy aallkkaalliinnee aannddccaann bbuurrnn sseevveerreellyy iiff ccoonnttaacctt wwiitthh sskkiinn oorr eeyyeessooccccuurrss..HHaannddllee cchheemmiiccaall ccaarreeffuullllyy aanndd aavvooiidd ccoonnttaacctt wwiitthhsskkiinn.. AALLWWAAYYSS wweeaarr PPeerrssoonnaall PPrrootteeccttiivveeEEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg ggoogggglleess oorr ffaaccee sshhiieelldd,,cchheemmiiccaall rreessiissttaanntt gglloovveess,, bboooottss,, aapprroonn oorr ssuuiitt aassrreeqquuiirreedd.. FFoorr ppeerrssoonnaall ssaaffeettyy rreeffeerr ttoo tthhee cclleeaanniinnggaaggeenntt mmaannuuffaaccttuurreerr’’ss MMaatteerriiaallss SSaaffeettyy DDaattaa SShheeeettaanndd ffoollllooww aallll rreeccoommmmeennddeedd ssaaffee hhaannddlliinnggpprraaccttiicceess..

Microchannel (MCHE) Coils

NNOOTTIICCEECCooiill DDaammaaggee!!FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinnccooiill ddaammaaggee..DDOO NNOOTT uussee aannyy ddeetteerrggeennttss wwiitthh mmiiccrroocchhaannnneellccoonnddeennsseerr ccooiillss..UUssee pprreessssuurriizzeedd wwaatteerr oorr aaiirr OONNLLYY,, wwiitthh pprreessssuurreennoo ggrreeaatteerr tthhaann 660000ppssii..FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee pprrooppeerrmmiiccrroocchhaannnneell ccooiill cclleeaanniinngg pprroocceedduurree,, rreeffeerr ttoo RRTT--SSVVBB8833**--EENN

Due to the soft material and thin walls of the MCHEcoils, the traditional field maintenance methodrecommended for Round Tube Plate Fin (RTPF) coilsdoes not apply to microchannel coils. Moreover,chemical cleaners are a risk factor to MCHE due to thematerial of the coil. The manufacturer does notrecommend the use of chemical cleaners to cleanmicrochannel coils. Using chemical cleaners could leadto warranty claims being further evaluated for validityand failure analysis.

The recommended cleaning method for microchannelcondenser coils is pressurized water or air with a non-pinpoint nozzle and an ECU of at least 180 withpressure no greater than 600 psi. To minimize the riskof coil damage, approach the cleaning of the coil withthe pressure washer aimed perpendicular to the face ofthe coil during cleaning. Optimum clearance betweenthe sprayer nozzle and the microchannel coil is 1”–3”.

Final ProcessFor future reference, record the unit data below in theblanks provided.


RT-SVX057E-EN 29

Table 6. Unit data log

Complete Unit ModelNumber

Unit Serial Number

Wiring DiagramNumbers(from unit control panel)

-schematic(s)

-connections

Network ID


30 RT-SVX057E-EN

Tab

le7.

Sam

ple

mai

nte

nan

celo

g

Date

CurrentAmbient

TempF/C

RefrigerantCircuit#1

Com

pr.OilLevel

Suct.Press.

Psig/kPa

Disch.Press

Psig/kPa

LiquidPress

Psig/kPa

SuperheatF/C

Sub-coolF/C

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low

-ok-low


RT-SVX057E-EN 31

TroubleshootingWWAARRNNIINNGG

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Standard TroubleshootingFailures

Cooling Failure1. Cooling and heating set points (slide pot) on the

thermostat have failed.

NNoottee:: Not used on electromechanical units.

2. CC1 24 Vac control circuit has opened. Check CC1coils and Frostat™ status. Check the status of theLED indicator in LSD:

a. LED will be flashing to indicate that a SafetyInput has opened while a Y call is present.

b. Compressor lockout is indicated by a solid(nonflashing) red LED.

To reset LSD - Power cycle on ‘R’ input.

Simultaneous Heat and Cool FailureEmergency Stop is activated.

Low Leak Economizer – (LLE)Troubleshooting1. The economizer controller provides alarm

messages that display on the 2-line LCD. If one ormore alarms are present and there has been nokeypad activity for at least 5 minutes, the Alarmsmenu displays and cycles through the active

alarms.

NNoottee:: Note: You can also navigate to the Alarmsmenu at any time.

2. Once the alarm has been identified and the causehas been removed (for example, replaced faultysensor), the alarm can be cleared from the display.

NNoottee:: If an alarm still exists after you clear it, it re-displays within 5 seconds.

To Clear an AlarmOnce the alarm has been identified and the cause hasbeen removed (for example, replaced faulty sensor),the alarm can be cleared from the display.

1. Navigate to the desired alarm.

2. Press .

3. “ERASE?” is displayed.

4. Press .

5. “ALARM ERASED” is displayed.

6. Press (Menu Up) to complete the action andreturn to the previous menu.

NNoottee:: If an alarm still exists after you clear it, it re-displays within 5 seconds.

Low Leak Economizer Fault CodesLow Leak Economizer Alarms:

• CO2 Sensor Error

• SYS Alarm

• Actuator Undervoltage

• Actuator Overvoltage

• Actuator Stalled

The FDD system shall detect the following faults:

• Air temperature sensor failure/fault

• Not economizing when it should

• Economizing when it should not

• Damper not modulating

• Excess outdoor air

The JADE controller is a certified FDD product (HJW10)by California Title 24, Part 6. The FDD system isrequired for meeting California Energy Commission'sTitle 24 regulations. Table 8, p. 32 shows the varioustests that can be performed (rows) and the five faultsthat are defined by FDD (columns). The 'x' means thatthe test has to be conducted to see if it is causing thefault to occur.

32 RT-SVX057E-EN

Table 8. FDD troubleshooting

FAULTS

TESTSAir temp. sensorfailure / fault

Not economizingwhen it should

Economizing whenit should not

Damper notmodulating

Excessoutdoor air

Damper Stuck Open x x x

Damper Stuck atMinimum x x

Bad or UnpluggedActuator x x x

Sensor Hard Failure x x x x

Actuator MechanicallyDisconnected x x x x

Resetting Cooling and HeatingLockoutsCooling Failures and Heating Lockouts are reset in anidentical manner.

Method 1 section explains resetting the system fromthe space; Method 2 section explains resetting thesystem at the unit.

NNoottee:: Before resetting Cooling Failures and HeatingLockouts check the Failure Status Diagnostics bythe methods previously explained. Diagnosticswill be lost when the power to the unit isdisconnected.

Method 1To reset the system from the space, turn the “Mode”selection switch at the thermostat to the “Off” position.After approximately 30 seconds, turn the “Mode”selection switch to the desired mode, i.e. Heat, Cool orAuto.

Method 2To reset the system at the unit, cycle the unit power byturning the disconnect switch “Off” and then “On”.

Condensate Overflow SwitchWhen the condensate overflow switch is closed, a drainpan overflow condition is indicated and it will shut unitoperations down.

Unit Economizer Control (ECA)Verify Economizer Status by Economizer Actuator(ECA) LED indicator:

• OFF: No Power or Failure

• ON: Normal, OK to Economize

• Slow Flash: Normal, Not OK to Economize

• Fast Flash - 1/4 Second On / 2 Seconds Off:

– Error Code: Communications Failure

• Pulse Flash: 1/30 Second On / 1/4 Second Off: (2Seconds between pulse sequences)

Error Code• 1 Flash: Actuator Fault

• 2 Flashes: CO2 Sensor

• 3 Flashes: RA Humidity Sensor

• 4 Flashes: RA Temp Sensor

• 6 Flashes: OA Humidity Sensor

• 7 Flashes: OA Temp Sensor

• 8 Flashes: MA Temp Sensor

• 9 Flashes: On-board Setpoint Failure

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RT-SVX057E-EN 33

Wiring Diagrams

NNoottee:: Wiring diagrams can be accessed via e-Libraryby entering the diagram number in the literature

order number search field or by contactingtechnical support.

Table 9. Wiring diagrams

Type of Airflow Schematic Type Voltage DiagramNumber Description

Constant Volume

Power 208-575 12130801 Cooling only

Control 208-575 12134146 Cooling only

Control Box Connection

208-575 12131531 Electric Heat-208/575- 5-15 kW

208-230 12131532 Electric Heat-208/230-20-25 kW

380(a) /460/575 12131533 Electric Heat-460/575-20-25 kW

Connection 208-575 12133022 Cooling only

Raceway Connection 208-575 12134171 Cooling only

(a) Unit will operate reliably at 400V.

34 RT-SVX057E-EN

WarrantyFor Commercial UnitaryEquipment Rated 25 Tons andUnder and Related AccessoriesPPrroodduuccttss CCoovveerreedd — This warranty is extended byTrane, and applies to the following products:

• All packaged and split system air conditioners andheat pumps have a rated capacity of 25 tons andunder.

• All packaged combinations gas/electric airconditioners having a rated capacity of 25 tons andunder.

• All packaged combination gas/electric airconditioners having a rated capacity of 1.5 through5 tons single phase electric power and used forcommercial applications. (As used in this warranty,a commercial application is any application wherethe end purchaser uses the product for other thanpersonal, family or household purposes.)

• All accessories for the above products which aresold by Trane and applied in accordance with Tranespecifications.

Basic WarrantyThe warrantor warrants for a period of twelve (12)months from the initial start-up or eighteen (18)months from date of shipment, whichever is sooner,that the products covered by this warranty (1) are freefrom defects in material and manufacture, and (2) havethe capacities and ratings set forth in the warrantor’scatalogs and bulletins. If any part of your airconditioner fails because of a manufacturing defect,Warrantor will furnish without charge the requiredreplacement part.

If the heat exchanger fails because of a manufacturingdefect within five years from the date of start-up,Warrantor will furnish without charge a replacementheat exchanger. In addition, if the optional, factoryinstalled, stainless steel heat exchanger fails becauseof a manufacturing defect within ten years from thedate of start-up, Warrantor will furnish without chargea replacement heat exchanger.

Any local transportation, related service labor anddiagnosis calls are not included. In addition, if thesealed motor-compressor fails because of amanufacturing defect within the second through fifthyear from the date of original purchase, Warrantor willfurnish without charge the required replacementcompressor.

Exclusions and LimitationsThe warrantor’s obligations and liabilities under thiswarranty are limited to furnishing F.O.B. factory orwarehouse at the warrantor-designated shipping point,freight allowed to Buyer’s city (or port of export forshipments outside the conterminous United States) areplacement product or, at the option of the warrantor,parts for the repair of the product not conforming tothis warranty and which have been returned to thewarrantor.

The warrantor’s warranty is conditional on theCustomer providing written notice to the warrantorwithin thirty (30) days of the discovery of the defect. Noproduct shall be returned to the warrantor without thewarrantor’s written permission. No liability whatevershall attach to warrantor until said products have beenfully paid for and then said liability shall be limited tothe purchase price of the equipment shown to bedefective.

The warranty does not apply to any compressor or gas-fired heat exchanger which has been repaired oraltered in such manner as, in the judgement of thewarrantor, affects its stability or reliability. Thiswarranty does not cover (1) any heat exchanger whichhas been fired with an improper type of fuel (2) a heatexchanger which is installed in a beauty parlor, drycleaning establishment, de-greasing plant or in anycorrosive atmosphere; or (3) any heat exchanger whichis not shown to be defective by the warrantor’sinspection.

This warranty does not cover damage due to accident,abuse, improper use, external causes, freezing,corrosion, erosion or deterioration. Localtransportation, related service labor, air filters,diagnosis calls, refrigerant and related items are notcovered.

THE WARRANTY AND LIABILITY SET FORTH HEREINARE IN LIEU OF ALL OTHER WARRANTIES ANDLIABILITIES, WHETHER IN CONTRACT OR INNEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR INFACT, INCLUDING IMPLIED WARRANTIES ORMERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE AND ANY IMPLIEDWARRANTIES OTHERWISE ARISING FROM THECOURSE OF DEALING OR TRADE. IN NO EVENTSHALL THE WARRANTOR BE LIABLE FOR ANYINCIDENTAL OR CONSEQUENTIAL DAMAGES.

The warrantor makes certain further warrantyprotection available on an optional, extra-cost basis.Any further warranty must be in writing. If you wishfurther help or information concerning this warranty,contact: Trane — Warrantor, 2701 Wilma RudolphBlvd., Clarksville, TN 37040

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NNootteess

Trane and American Standard create comfortable, energy efficient indoor environments forcommercial and residential applications. For more information, please visit trane. com oramericanstandardair.com.

Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design andspecifications without notice. We are committed to using environmentally conscious print practices.

RT-SVX057E-EN 11 Sep 2021

Supersedes RT-SVX057D-EN (June 2020) ©2021

packaged rooftop air conditioners foundation™

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