Trane Ascend ACR Series Installation, Operation And Maintenance Manual

Page 1

SSAAFFEETTYY WWAARRNNIINNGG

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

March 2019

AACC--SSVVXX000011AA--EENN

Ascend™™ Air-Cooled Chiller — Model ACR

With AdaptiSpeed™ Technology Quiet operation enabled by InvisiSound™ Technology 150 to 300 Nominal Tons

Installation, Operation, and Maintenance

Page 2

AC-SVX001A-EN

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAU

TION

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

NOTICE

Indicates a situation that could result in equipment or property-damage only accidents.

Important Environmental Concerns

Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.

Important Responsible Refrigerant Practices

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified according to local rules. For the USA, the Federal Clean Air Act (Section

608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg RReeqquuiirreedd!!

FFaaiilluurree ttoo ffoollllooww ccooddee ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. AAllll ffiieelldd wwiirriinngg MMUUSSTT bbee ppeerrffoorrmmeedd bbyy qquuaalliiffiieedd ppeerrssoonnnneell.. IImmpprrooppeerrllyy iinnssttaalllleedd aanndd ggrroouunnddeedd ffiieelldd wwiirriinngg ppoosseess FFIIRREE aanndd EELLEECCTTRROOCCUUTTIIOONN hhaazzaarrddss.. TToo aavvooiidd tthheessee hhaazzaarrddss,, yyoouu MMUUSSTT ffoollllooww rreeqquuiirreemmeennttss ffoorr ffiieelldd wwiirriinngg iinnssttaallllaattiioonn aanndd ggrroouunnddiinngg aass ddeessccrriibbeedd iinn NNEECC aanndd yyoouurr llooccaall// ssttaattee//nnaattiioonnaall eelleeccttrriiccaall ccooddeess..

WWAARRNNIINNGG

PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) RReeqquuiirreedd!!

FFaaiilluurree ttoo wweeaarr pprrooppeerr PPPPEE ffoorr tthhee jjoobb bbeeiinngg uunnddeerrttaakkeenn ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroomm ppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaall hhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall aanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthhee iinnssttrruuccttiioonnss bbeellooww::

•• BBeeffoorree iinnssttaalllliinngg//sseerrvviicciinngg tthhiiss uunniitt,, tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE rreeqquuiirreedd ffoorr tthhee wwoorrkk bbeeiinngg uunnddeerrttaakkeenn ((EExxaammpplleess;; ccuutt rreessiissttaanntt gglloovveess//sslleeeevveess,, bbuuttyyll gglloovveess,, ssaaffeettyy ggllaasssseess,, hhaarrdd hhaatt//bbuummpp ccaapp,, ffaallll pprrootteeccttiioonn,, eelleeccttrriiccaall PPPPEE aanndd aarrcc ffllaasshh ccllootthhiinngg)).. AALLWWAAYYSS rreeffeerr ttoo aapppprroopprriiaattee MMaatteerriiaall SSaaffeettyy DDaattaa SShheeeettss ((MMSSDDSS))//SSaaffeettyy DDaattaa SShheeeettss ((SSDDSS)) aanndd OOSSHHAA gguuiiddeelliinneess ffoorr pprrooppeerr PPPPEE..

•• WWhheenn wwoorrkkiinngg wwiitthh oorr aarroouunndd hhaazzaarrddoouuss cchheemmiiccaallss,, AALLWWAAYYSS rreeffeerr ttoo tthhee aapppprroopprriiaattee MMSSDDSS//SSDDSS aanndd OOSSHHAA//GGHHSS ((GGlloobbaall HHaarrmmoonniizzeedd SSyysstteemm ooff CCllaassssiiffiiccaattiioonn aanndd LLaabbeelllliinngg ooff CChheemmiiccaallss)) gguuiiddeelliinneess ffoorr iinnffoorrmmaattiioonn oonn aalllloowwaabbllee ppeerrssoonnaall eexxppoossuurree lleevveellss,, pprrooppeerr rreessppiirraattoorryy pprrootteeccttiioonn aanndd hhaannddlliinngg iinnssttrruuccttiioonnss..

•• IIff tthheerree iiss aa rriisskk ooff eenneerrggiizzeedd eelleeccttrriiccaall ccoonnttaacctt,, aarrcc,, oorr ffllaasshh,, tteecchhnniicciiaannss MMUUSSTT ppuutt oonn aallll PPPPEE iinn aaccccoorrddaannccee wwiitthh OOSSHHAA,, NNFFPPAA 7700EE,, oorr ootthheerr ccoouunnttrryy--ssppeecciiffiicc rreeqquuiirreemmeennttss ffoorr aarrcc ffllaasshh pprrootteeccttiioonn,, PPRRIIOORR ttoo sseerrvviicciinngg tthhee uunniitt.. NNEEVVEERR PPEERRFFOORRMM AANNYY SSWWIITTCCHHIINNGG,, DDIISSCCOONNNNEECCTTIINNGG,, OORR VVOOLLTTAAGGEE TTEESSTTIINNGG WWIITTHHOOUUTT PPRROOPPEERR EELLEECCTTRRIICCAALL PPPPEE AANNDD AARRCC FFLLAASSHH CCLLOOTTHHIINNGG.. EENNSSUURREE EELLEECCTTRRIICCAALL MMEETTEERRSS AANNDD EEQQUUIIPPMMEENNTT AARREE PPRROOPPEERRLLYY RRAATTEEDD FFOORR IINNTTEENNDDEEDD VVOOLLTTAAGGEE..

Page 3

AC-SVX001A-EN

WWAARRNNIINNGG

FFoollllooww EEHHSS PPoolliicciieess!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..

•• AAllll IInnggeerrssoollll RRaanndd ppeerrssoonnnneell mmuusstt ffoollllooww IInnggeerrssoollll RRaanndd EEnnvviirroonnmmeennttaall,, HHeeaalltthh aanndd SSaaffeettyy ((EEHHSS)) ppoolliicciieess wwhheenn ppeerrffoorrmmiinngg wwoorrkk ssuucchh aass hhoott wwoorrkk,, eelleeccttrriiccaall,, ffaallll pprrootteeccttiioonn,, lloocckkoouutt//ttaaggoouutt,, rreeffrriiggeerraanntt hhaannddlliinngg,, eettcc.. AAllll ppoolliicciieess ccaann bbee ffoouunndd oonn tthhee BBOOSS ssiittee.. WWhheerree llooccaall rreegguullaattiioonnss aarree mmoorree ssttrriinnggeenntt tthhaann tthheessee ppoolliicciieess,, tthhoossee rreegguullaattiioonnss ssuuppeerrsseeddee tthheessee ppoolliicciieess..

•• NNoonn--IInnggeerrssoollll RRaanndd ppeerrssoonnnneell sshhoouulldd aallwwaayyss ffoollllooww llooccaall rreegguullaattiioonnss..

WWAARRNNIINNGG

RReeffrriiggeerraanntt uunnddeerr HHiigghh PPrreessssuurree!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn aann eexxpplloossiioonn wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy oorr eeqquuiippmmeenntt ddaammaaggee.. SSyysstteemm ccoonnttaaiinnss rreeffrriiggeerraanntt uunnddeerr hhiigghh pprreessssuurree.. RReeccoovveerr rreeffrriiggeerraanntt ttoo rreelliieevvee pprreessssuurree bbeeffoorree ooppeenniinngg tthhee ssyysstteemm.. SSeeee uunniitt nnaammeeppllaattee ffoorr rreeffrriiggeerraanntt ttyyppee.. DDoo nnoott uussee nnoonn--aapppprroovveedd rreeffrriiggeerraannttss,, rreeffrriiggeerraanntt ssuubbssttiittuutteess,, oorr rreeffrriiggeerraanntt aaddddiittiivveess..

Factory Warranty Information

Compliance with the following is required to preserve the factory warranty:

AAllll UUnniitt IInnssttaallllaattiioonnss

Startup MUST be performed by Trane, or an authorized agent of Trane, to VALIDATE this WARRANTY. Contractor must provide a two-week startup notification to Trane (or an agent

This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Factory Training

Factory training is available through Trane University™ to help you learn more about the operation and maintenance of your equipment. To learn about available training opportunities contact Trane University™.

Online: www.trane.com/traneuniversity

Phone: 855-803-3563

Email: traneuniversity@trane.com

IInnttrroodduuccttiioonn

Page 4

AC-SVX001A-EN

Model Number Information . . . . . . . . . . . .. . . . 7

Nameplates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Unit Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Model Number Coding System. . . . . . . . . 7

Compressor Nameplate . . . . . . . . . . . . . . . . . . . 7

Model Number Descriptions. . . . . . . . . .. . . . . . 8

Unit Model Number. . . . . . . . . . . . . . . . . . . . . . . 8

Compressor Information . . . . . . . . . . . . . . . . . 10

Model Number . . . . . . . . . . . . . . . . . . . . . . 10

Serial Number . . . . . . . . . . . . . . . . . . . . . . . 10

General Information . .. . . . . . . . . .. . . . . . . . . . . 11

Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . 11

Unit Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Accessory/Option Information . . . . . . . . . . . . 11

General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Drive Cooling Fluid . . . . . . . . . . . . . . . . . . . . . . 14

Pre-Installation . . . . . . . . . . .. . . . . . . . . .. . . . . . . 15

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Exterior Inspection . . . . . . . . . . . . . . . . . . . 15

Inspection for Concealed

Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Storage Requirements . . . . . . . . . . . . . . . . . . . 15

Installation Requirements . . . . . . . . . . . . . . . . 16

Dimensions and Weights . . . . . . . . . . . . .. . . . . 17

Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Service Clearance . . . . . . . . . . . . . . . . . . . . . . . 18

Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . 19

Installation Mechanical . . . . . . . . . .. . . . . . . . . . 23

Location Requirements . . . . . . . . . . . . . . . . . . 23

Sound Considerations. . . . . . . . . . . . . . . . 23

Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Lifting and Moving Instructions . . . . . . . . . . . 23

Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . 26

Isolation and Sound Emission . . . . . . . . . . . . 26

Unit Isolation and Leveling. . . . . . . . . . . . 26

Elastomeric Isolators . . . . . . . . . . . . . . . . . 26

Mounting Locations, Weights,

Isolators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Compressor Mounting Bolt

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Refrigerant Pressure Relief Valves . . . . . . . . 31

Evaporator Piping . . . . . . . . . . . . . . . . . . . . . . . 31

Evaporator Piping Components . . . . . . . 32

Evaporator Waterside Pressure Drop

Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . 35

Low Evaporator Refrigerant Cutout,

Glycol Requirements . . . . . . . . . . . . . . . . . . . . 37

Installation Electrical . .. . . . . . . . . .. . . . . . . . . . 38

General Recommendations. . . . . . . . . . . . . . . 38

Adaptive Frequency™ Drive

Capacitor Discharge. . . . . . . . . . . . . . . . . . 39

Units with Nitrogen Charge

Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Installer-Supplied Components . . . . . . . . . . . 39

Power Supply Wiring. . . . . . . . . . . . . . . . . 40

Control Power Supply . . . . . . . . . . . . . . . . 41

Service Power Connection . . . . . . . . . . . . 41

Heater Power Supply. . . . . . . . . . . . . . . . . 42

Chilled Water Pump Control . . . . . . . . . . . . . . 42

Programmable Relays . . . . . . . . . . . . . . . . . . . 43

Relay Assignments Using Tracer TU . . . . . . 43

Low Voltage Wiring. . . . . . . . . . . . . . . . . . . . . . 44

Emergency Stop . . . . . . . . . . . . . . . . . . . . . 44

External Auto/Stop . . . . . . . . . . . . . . . . . . . 44

External Circuit Lockout – Circuit #1

and #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Ice Building Option . . . . . . . . . . . . . . . . . . 44

External Chilled Water Setpoint

(ECWS) Option . . . . . . . . . . . . . . . . . . . . . . 45

External Demand Limit Setpoint

(EDLS) Option . . . . . . . . . . . . . . . . . . . . . . . 45

EDLS and ECWS Analog Input Signal

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Chilled Water Reset (CWR) . . . . . . . . . . . 46

Transformer Power Rating . . . . . . . . . . . . . . . 47

Communications Interface . . . . . . . . . . . . . . . 47

Table of Contents

Page 5

AC-SVX001A-EN

LonTalk Interface (LCI-C) . . . . . . . . . . . . . 47

BACnet Interface (BCI-C). . . . . . . . . . . . . . 47

Modbus Remote Terminal Unit

Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Operating Principles. . . . . . . . .. . . . . . . . . . . . . . 48

Refrigeration Circuits . . . . . . . . . . . . . . . . . . . . 48

Refrigeration Cycle . . . . . . . . . . . . . . . . . . . . . . 48

Refrigerant R-134a . . . . . . . . . . . . . . . . . . . . . . . 48

Compressor and Oil System . . . . . . . . . . . . . . 48

Condenser and Fans . . . . . . . . . . . . . . . . . . . . . 48

Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Drive Cooling System . . . . . . . . . . . . . . . . . . . . 49

Controls . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 50

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

UC800 Specifications . . . . . . . . . . . . . . . . . . . . 50

Wiring and Port Descriptions. . . . . . . . . . 50

Communication Interfaces . . . . . . . . . . . . 51

Rotary Switches . . . . . . . . . . . . . . . . . . . . . 51

LED Description and Operation. . . . . . . . 51

Tracer AdaptiView TD7 Display . . . . . . . . . . . 53

Operator Interface. . . . . . . . . . . . . . . . . . . . 53

Home Screen . . . . . . . . . . . . . . . . . . . . . . . 53

Viewing Chiller Operating

Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Equipment Settings . . . . . . . . . . . . . . . . . . 59

Display Settings . . . . . . . . . . . . . . . . . . . . . 61

Security Settings. . . . . . . . . . . . . . . . . . . . . 62

InvisiSound Ultimate — Noise

Reduction Mode . . . . . . . . . . . . . . . . . . . . . 63

Tracer TU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Pre-Start. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 65

Start-up and Shutdown. . . . . . . . . . . . . . . . . .. . 66

Unit Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Temporary Shutdown And Restart . . . . . . . . 66

Extended Shutdown Procedure . . . . . . . . . . 66

Seasonal Unit Start-up Procedure . . . . . . . . 67

System Restart After Extended

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Sequence of Operation. . . . . . . . . . . . . . . . . . . 67

Software Operation Overview. . . . . . . . . 67

Power Up Diagram . . . . . . . . . . . . . . . . . . 69

Power Up to Starting . . . . . . . . . . . . . . . . . 70

Stopped to Starting . . . . . . . . . . . . . . . . . . 71

Running (Lead Compressor/Circuit

Start and Run) . . . . . . . . . . . . . . . . . . . . . . . 72

Running (Lag Compressor/Circuit

Start and Run) . . . . . . . . . . . . . . . . . . . . . . . 73

Satisfied Setpoint . . . . . . . . . . . . . . . . . . . . 74

Normal Shutdown to Stopped or

Run Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Immediate Shutdown to Stopped or

Run Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Ice Making (Running to Ice Making to

Running) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Ice Making (Auto to Ice Making to Ice

Making Complete) . . . . . . . . . . . . . . . . . . . 78

Maintenance . . . . . . . . . .. . . . . . . . . .. . . . . . . . . . 79

Recommended Maintenance . . . . . . . . . . . . . 79

Weekly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Annual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Refrigerant and Oil Charge

Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Lubrication System . . . . . . . . . . . . . . . . . . . . . . 80

Oil Sump Level Check . . . . . . . . . . . . . . . . 80

Drive Cooling System . . . . . . . . . . . . . . . . . . . . 81

Service Intervals . . . . . . . . . . . . . . . . . . . . . 81

Unit Diagnostics . . . . . . . . . . . . . . . . . . . . . 81

pH Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Pressure Relief Cap . . . . . . . . . . . . . . . . . . 82

Drive Cooling Expansion Tank . . . . . . . . 82

Condenser Coil Corrosion Protection

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Condenser Coil Cleaning . . . . . . . . . . . . . . . . . 82

Coil Cleaning Interval . . . . . . . . . . . . . . . . 82

Cleaning Air Side of Coils . . . . . . . . . . . . 83

Cleaning Coated Coils . . . . . . . . . . . . . . . . 83

Reinstallation of Compressor Mounting

Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Servicing Chiller Roof . . . . . . . . . . . . . . . . . . . 83

Diagnostics. . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . 84

TTaabbllee ooff CCoonntteennttss

Page 6

AC-SVX001A-EN

General Diagnostics Information. . . . . . . . . . 84

AFD Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 84

Main Processor Diagnostics . . . . . . . . . . . . . . 87

Communication Diagnostics. . . . . . . . . . . . . . 99

Unit Wiring . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 104

Log and Check Sheets . . . . . . . . . . . . . . . . . . . . 105

Ascend™ Model ACR Installation Completion Check Sheet and Request for

Trane Service . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Operator Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

TTaabbllee ooff CCoonntteennttss

Page 7

AC-SVX001A-EN

Model Number Information

Nameplates

Unit nameplates are applied to the exterior of the control panel. A compressor nameplate is located on each compressor. When the unit arrives, compare all nameplate data with ordering, submittal, and shipping information.

Unit Nameplate

See figure below for a typical unit nameplate. The outdoor unit nameplate provides the following information:

• Unit model and size description.

• Unit serial number.

• Unit electrical requirements.

• Operating charges of R-134a and refrigerant oil (Trane OIL00311).

• Unit test pressures.

• Installation, operation and maintenance and service data literature.

• Drawing numbers for unit wiring diagrams

Model Number Coding System

Model numbers are composed of numbers and letters that represent features of the equipment. Shown below is a sample of typical unit model number.

ACRA 200F UA01 AA1F N1X1 A2D0 0CB1 X03X AA01 000

Each position, or group of positions, in the model number is used to represent a feature. Unit model number digits are selected and assigned in accordance with the definitions as listed in Model Number Descriptions chapter. For example, position 08 of the unit model number above contains the letter “F” which indicates the unit voltage is 460/60/3.

Compressor Nameplate

The compressor nameplate provides the following information:

• Compressor model number.

• Compressor serial number.

• Compressor electrical characteristics

• Utilization range.

• Recommended refrigerant

See Model Number Descriptions chapter for compressor model and serial number descriptions.

Page 8

AC-SVX001A-EN

Model Number Descriptions

Unit Model Number

Digit 1, 2, 3, 4 — Unit Model

ACRA = Air-Cooled Screw Chiller

Digit 5, 6, 7 — Nominal Tonnage

150 = 150 Tons 165 = 165 Tons 180 = 180 Tons 200 = 200 Tons 225 = 225 Tons 250 = 250 Tons 275 = 275 Tons 300 = 300 Tons

Digit 8 — Unit Voltage

A = 200/60/3 B = 230/50/3 C = 380/50/3 D = 380/60/3 E = 400/50/3 F = 460/60/3 G = 575/60/3 H = 400/60/3

Digit 9 — Manufacturing Location

U = Trane Commercial Systems, Pueblo, CO

USA

Digits 10, 11 — Design Sequence

** = Factory assigned

Digit 12 — Unit Sound Package

1 = InvisiSound™ Standard Unit 2 = InvisiSound™ Superior (Line Wraps,

Reduced Fan Speed) 3 = InvisiSound™ Ultimate (Compressor

Sound Attenuation, Line Wraps, Reduced Fan Speed)

Digit 13 — Agency Listing

0 = No Agency Listing A = UL/cUL Listing

Digit 14 — Pressure Vessel Code

A = ASME Pressure Vessel Code C = CRN or Canadian Equivalent Pressure

Vessel Code

D = Australia Pressure Vessel Code

Digit 15 — Factory Charge

1 = Refrigerant Charge R-134a 2 = Nitrogen Charge

Digit 16 — Evaporator Application

F = Standard Cooling (40 to 65°F/5.5 to 18°

C) G = Low Temp Process Cooling (below 40°F/

5.5°C) C = Ice Making (20 to 6°F/7 to 18°C) with

Hardwired Interface

Digit 17 — Evaporator Configuration

N = 2-pass Evaporator P = 3-pass Evaporator

Digit 18 — Evaporator Fluid Type

1 = Water 2 = Calcium Chloride 3 = Ethylene Glycol 4 = Propylene Glycol 5 = Methanol

Digit 19 — Water Connection

X = Grooved Pipe F = Grooved Pipe + Flange

Digit 20 — Flow Switch

1 = Factory Installed - Other Fluid (15 cm/s) 2 = Factory Installed - Water 2 (35 cm/s) 3 = Factory Installed - Water 3 (45 cm/s)

Digit 21 — Insulation

A = Factory Insulation — All Cold Parts 0.75” B = Evaporator-only Insulation for High

Humidity/Low Evap Temp 1.25”

Digit 22 — Unit Application

1 = Standard Ambient (32 to 105°F/0 to

40.6°C) 2 = Low Ambient (0 to 105°F/-17.7 to 40.6°

C) 3 = Extreme Low Ambient (–20 to 105°F/

-28.9 to 40.6°C)

4 = High Ambient (32 to 125°F/0 to 52°C) 5 = Wide Ambient (0 to 125°F/-17.7 to 52°C)

Digit 23 — Condenser Fin Options

A = Aluminum Fins with Slits D = CompleteCoat™ Epoxy Coated Fins

Digit 24, 25 — Not Used

00 = Reserved for future use

Digit 26 — Power Line Connection Type

A = Terminal Block C = Circuit Breaker D = Circuit Breaker with High Fault Rated

Control Panel

Digit 27 — Short Circuit Current Rating

A = Default A Short Circuit Rating B = High A Short Circuit Rating

Digit 28 — Transformer

0 = No Transformer 1 = Factory Installed Transformer

Digit 29 — Line Voltage Harmonic Mitigation

X = DC Reactors (~30% TDD) 1 = Filter circuit (IEEE519 Compliant)

Digit 30 — Electrical Accessories

0 = No Convenience Outlet C = 15A 115V Convenience Outlet (Type B)

Digit 31 — Remote Communication Option

0 = None 1 = LonTalk® Interface (LCI-C) 2 = BACnet® MS/TP Interface 3 = Modbus™ Interface

Digit 32 — Hard Wire Communication

X = None A = Hard Wired Bundle - All B = Remote Leaving Water Temp Setpoint C = Remote Leaving Temp and Demand Limit

Setpoints

D = Programmable Relay E = Programmable Relay and Leaving Water

and Demand Limit Setpoint

F = Percent Capacity G = Percent Capacity and Leaving Water and

Demand Limit Setpoint H = Percent Capacity and Programmable

Relay

Page 9

AC-SVX001A-EN

Digit 33 — Not Used

A = Reserved for future use

Digit 34 — Structural Options

A = Standard Unit Structure

Digit 35 — Appearance Accessories

0 = No Appearance Options A = Architectural Louvered Panels

Digit 36 — Unit Isolation

0 = None 1 = Elastomeric Isolators

Digit 37, 38 — Not Used

00 = Reserved for future use

Digit 39 — Special

0 = None S = Special F = Ship to Final Finisher

MMooddeell NNuummbbeerr DDeessccrriippttiioonnss

Page 10

AC-SVX001A-EN

Compressor Information

Model Number

Digit 1, 2, 3, 4 — Compressor Type

CHHS = Positive displacment, helical rotary (twin screw) hermetic

compressor

Digit 5 — Frame Size

R = R Frame: 70 - 100 tons S = S Frame: 112 - 165 tons

Digit 6 — Motor Length

B = 145 mm C = 170 mm E = 165 mm F = 190 mm

Digit 7— Motor Winding Characteristics

* = Factory assigned

Digit 8 — Volume Ratio

E = Variable Volume Ratio

Digit 9— Refrigerant

1 = R-134a

Digits 10, 11 — Design Sequence

** = Factory assigned

Serial Number

Digit 1, 2 — Year

YY = Last two digits of year of manufacture

Digit 3, 4 — Week

WW = Week of build, from 00 to 52

Digit 5 — Day

1 = Monday 2 = Tuesday 3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday 7 = Sunday

Digit 6, 7, 8 — Coded Time Stamp

TTT = Used to ensure uniqueness of serial number

Digit 9 — Assembly Line

Assembly line compressor was built on. Varies with facility.

Digit 10 — Build Location

A = Monterrey

MMooddeell NNuummbbeerr DDeessccrriippttiioonnss

Page 11

AC-SVX001A-EN

General Information

Unit Description

The Ascend™ ACR units are helical-rotary type, aircooled chillers designed for outdoor installation. The refrigerant circuits are factory-piped, leak tested and dehydrated. Every unit is electrically tested for proper control operation before shipment.

Chilled water inlet and outlet openings are covered for shipment. The chiller features Trane’s exclusive Adaptive Control™ logic, which monitors the control variables that govern the operation of the chiller unit. Adaptive Control logic can adjust capacity variables to avoid chiller shutdown when necessary, and keep producing chilled water. The units feature two independent refrigerant circuits. Each circuit utilizes at least one compressor driven by an Adaptive Frequency Drive. Each refrigerant circuit is provided with filter, sight glass, electronic expansion valve, and charging valves. The shell-and-tube evaporator is manufactured in accordance with the ASME standards or other international codes. Each evaporator is fully insulated and equipped with water drain and vent connections.

Units are shipped with full oil charge and can be ordered with either a factory refrigerant charge, or optional nitrogen charge.

Unit Length

Units are EXTENDED length if either of the following are selected:

• Transformer: Model number digit 28 = 1

• Harmonic Filtration Option: Model number digit 29 = 1

Units without Harmonic Filtration Option or Transformer (digits 28, 29 = 0X) are STANDARD length.

Accessory/Option Information

Check all the accessories and loose parts which are shipped with the unit against the shipping list. Included in these items will be water vessel drain plugs, electrical diagrams, and service literature, which are placed inside the control panel for shipment.

If optional elastomeric isolators are ordered with unit (model number digit 36 = 1), they are shipped mounted

on diagonal supports on the end of the unit opposite control panel. See figures below.

Figure 1. Elastomeric isolator shipping location

Elastomeric Isolator

Shipping Locations

(not all isolators shown quantity varies with unit configuration)

Figure 2. Elastomeric isolators attached for shipping

Page 12

AC-SVX001A-EN

General Data

Table 1. General data table

Unit Size (tons)

150 165 180 200 225 250 275 300

Compressor Model

CHHSR CHHSR CHHSR CHHSR CHHSS CHHSS CHHSS CHHSS

Quantity

# 2 2 2 2 2 2 2 2

Evaporator

Water Storage

(gal)

17.5 18.7 21.9 23.9 26.6 28.7 33.0 36.0

(L)

66.1 70.9 82.8 90.5 100.6 108.8 125.0 136.1

2 Pass arrangement

Water Connection Size

(in)

5 5 6 6 6 6 8 8

(mm)

125 125 150 150 150 150 200 200

Minimum Flow

(gpm)

171 187 202 228 261 288 318 354

(l/s)

10.8 11.8 12.7 14.4 16.5 18.2 20.1 22.3

Maximum Flow

(gpm)

626 684 742 835 957 1055 1165 1299

(l/s)

39.5 43.1 46.8 52.7 60.4 66.5 73.5 81.9

3 Pass arrangement

Water Connection Size

(in)

4 4 5 5 5 5 6 6

(mm)

100 100 125 125 125 125 150 150

Minimum Flow

(gpm)

114 124 135 152 174 192 212 236

(l/s)

7.2 7.8 8.5 9.6 11.0 12.1 13.4 14.9

Maximum Flow

(gpm)

417 456 495 557 638 703 777 866

(l/s)

26.3 28.8 31.2 35.1 40.2 44.3 49.0 54.6

Condenser

Qty of Coils

8 10 10 12 12 12 14 16

Coil Length

(in)

78.74 78.74 78.74 78.74 78.74 78.74 78.74 78.74

(mm)

2000 2000 2000 2000 2000 2000 2000 2000

Coil Height

(in)

50 50 50 50 50 50 50 50

(mm)

1270 1270 1270 1270 1270 1270 1270 1270

Fins/Ft

192 192 192 192 192 192 192 192

Rows 3 3 3 3 3 3 3 3

Condenser Fans

Quantity

# 8 10 10 12 12 12 14 16

Diameter

(in)

37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5

(mm)

953 953 953 953 953 953 953 953

Total Airflow

(cfm) 107,392 134,240 134,240 161,088 161,088 161,088 187,936 214,784

(m3/

hr)

182,460 228,075 228,075 273,690 273,690 273,690 319,305 364,920

Tip Speed

(ft/

min)

8700 8700 8700 8700 8700 8700 8700 8700

(M/S)

44.2 44.2 44.2 44.2 44.2 44.2 44.2 44.2

GGeenneerraall IInnffoorrmmaattiioonn

Page 13

AC-SVX001A-EN

Table 1. General data table (continued)

Unit Size (tons)

150 165 180 200 225 250 275 300

Ambient Temperature Range

Standard Ambient

°F (°C) 32 to 105 (0 to 40.6)

Low Ambient

°F (°C) 0 to 105 (-17.7 to 40.6)

Extreme Low Ambient

°F (°C) -20 to 105 (-28.9 to 40.6)

High Ambient °F (°C) 32 to 125 (0 to 52)

Wide Ambient

°F (°C) 0 to 125 (-17.7 to 52)

General Unit

Refrigerant

HFC-134a

Refrigerant Ckts

# 2

Minimum Load % 20 18 17 15 20 18 16 15

Refrigerant Charge/ckt

(lbs)

172 181 210 218 265 261 318 325

(kg)

78 82 95 99 120 118 144 148

Oil Trane OIL00311

Oil Charge/ckt

(gal)

3.0 3.0 3.0 3.0 4.0 4.0 4.0 4.0

(L)

11.4 11.4 11.4 11.4 15.1 15.1 15.1 15.1

GGeenneerraall IInnffoorrmmaattiioonn

Page 14

AC-SVX001A-EN

Drive Cooling Fluid

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

UUssee ooff uunnaapppprroovveedd fflluuiiddss,, oorr ddiilluuttiioonn ooff aapppprroovveedd fflluuiidd,, ccoouulldd rreessuulltt iinn ccaattaassttrroopphhiicc eeqquuiippmmeenntt ddaammaaggee.. UUssee oonnllyy TTrraannee HHeeaatt TTrraannssffeerr FFlluuiidd PP//NN CCHHMM0011002233.. TThhiiss fflluuiidd iiss aa ddiirreecctt uussee ccoonncceennttrraattiioonn aanndd iiss nnoott ttoo bbee ddiilluutteedd.. DDoo nnoott ttoopp ooffff wwiitthh wwaatteerr oorr aannyy ootthheerr fflluuiidd..

NNoottee:: The use of incorrect compounds in the drive

cooling system may result in scaling, erosion, corrosion or freezing. The Trane Company warranty specifically excludes liability for corrosion, erosion, freezing or deterioration of Trane equipment.

Proper fluid level is important to the operation of the unit. See Drive Cooling Expansion Tank section in Maintenance chapter for fluid level check instructions. The circuit capacities are shown in table below.

If the level is below the recommended minimum levels, contact your local Trane office.

NNoottee:: Drive cooling fluid service life is 5 years. See

maintenance chapter for more drive cooling system information.

Table 2. Drive Cooling

Unit Size

(tons)

Fluid Volume (gal) Fluid Volume (l)

Voltage

Ambient

(a)

Ckt1 Ckt2 Ckt 1 Ckt2

Standard Length

150 to 200 All All 1.4 2.0 5.5 7.7

225 to 250

200/60, 230/50,

460/60, 575/60

Std, Low, Extra Low

1.4 2.0 5.5 7.7

High, Wide

1.5 2.1 5.8 8.1

380/60, 380/50, 400/50

All 1.5 2.1 5.8 8.1

275 to 300 All All 1.5 2.1 5.8 8.1

Extended Length

150 to 200 All All 1.7 2.2 6.2 8.5

225 to 250

200/60, 230/50,

460/60, 575/60

Std, Low, Extra Low

1.7 2.2 6.2 8.5

High, Wide

1.7 2.3 6.6 8.8

380/60, 380/50, 400/50

All 1.7 2.3 6.6 8.8

275 to 300 All All 1.7 2.3 6.6 8.8

(a)

See model number description section, digit 22, for ambient information.

(a)

See model number description section, digit 22, for ambient information.

GGeenneerraall IInnffoorrmmaattiioonn

Page 15

AC-SVX001A-EN

Pre-Installation

Unit Inspection

To protect against loss due to damage incurred in transit, perform inspection immediately upon receipt of the unit.

Exterior Inspection

If the job site inspection reveals damage or material shortages, file a claim with the carrier immediately. Specify the type and extent of the damage on the bill of lading before signing. Notify the appropriate sales representative.

IImmppoorrttaanntt:: Do not proceed with installation of a

damaged unit without sales representative’s approval.

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

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

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

NNoottee:: Corrosion due to dirt, road grim, road salt, and

other contaminates picked up during shipping is not the responsibility of the carrier.

Inspection for Concealed Damage

Visually inspect the components for concealed damage as soon as possible after delivery and before it is stored.

If concealed damage is discovered:

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

• Concealed damage must be reported within 15 days.

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

• Stop unpacking the unit.

• Do not remove damaged material from receiving location.

• Take photos of the damage, if possible.

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

Repair

Notify the appropriate sales representative before arranging unit installation or repair.

IImmppoorrttaanntt:: Do not repair unit until the damage has

been inspected by the carrier’s representative.

Storage Requirements

Extended storage of outdoor unit prior to installation requires these precautionary measures:

• Store the outdoor unit in a secure area.

• For units that have been charged with refrigerant, verify the following valves are closed on each circuit:

– Suction service valve (butterfly valve)

– Liquid line angle valve or EXV (EXV is driven

closed whenever circuit is powered)

– Oil line shutoff valves to brazed plate heat

exchangers

NNoottee:: Units with factory refrigerant charge (model

number digit 15 = 1) are shipped with suction, liquid and oil line shutoff valves closed, isolating most of refrigerant charge in the evaporator. If unit goes directly into long term storage, it is recommended that these valve positions be confirmed.

• For units with nitrogen charge option (model number digit 15 = 2), units are shipped with valves open. If unit goes directly into storage prior to refrigerant charge, confirm all service valves are open.

• At least every three months (quarterly), check the pressure in the refrigerant circuits to verify that the refrigerant charge is intact. If it is not, contact a qualified service organization and the appropriate Trane sales office.

Page 16

AC-SVX001A-EN

Installation Requirements

Type

Trane Supplied Trane Installed

Trane Supplied Field Installed

Field Supplied Field Installed

Foundation

• Meet foundation requirements

Rigging

• Safety chains

• Clevis connectors

• Lifting beam

• Spreader bar

Disassembly/Reassembly (as required)

Trane, or an agent of Trane specifically authorized to perform start-up of Trane® products (contact your local Trane office for pricing)

Isolation

Elastomeric isolators (optional)

• Elastomeric isolators (optional)

Electrical

• Circuit breakers (optional)

• Unit Mounted Starter

• Circuit breakers (optional)

• Electrical connections to unit mounted starter

• Wiring sizes per submittal and NEC

• Terminal lugs

• Ground connection(s)

• BAS wiring (optional)

• Control voltage wiring

• Chilled water pump contactor and wiring

• Option relays and wiring

Water piping

Flow switch

• Taps for thermometers and gauges

• Thermometers

• Water flow pressure gauges

• Isolation and balancing valves in water piping

• Vents and drain

• Waterside pressure relief valves

• Water strainer

Insulation Insulation Insulation

Water Piping Connection Components

Grooved pipe Flange kit (optional)

Other Materials

• R-134a refrigerant

• Dry nitrogen (optional)

Ascend™ Model ACR Installation Completion Check Sheet and Request for Trane Service (AC-ADF001*-EN) See Log and Check Sheet chapter

Chiller Start-up Commissioning

Trane, or an agent of Trane specifically authorized to perform start-up of Trane® products

Trane specifically authorized to perform start-up of Trane® products

PPrree--IInnssttaallllaattiioonn

Page 17

AC-SVX001A-EN

Dimensions and Weights

Weights

Table 3. Unit weights

Standard Length Extended Length

Shipping Operating Shipping Operating

Unit Size

(tons)

InvisiSound™ Standard or Superior

150 11333 5141 11479 5207 13492 6120 13638 6186

165 12377 5614 12533 5685 14532 6592 14688 6662

180 12698 5760 12881 5843 14853 6737 15036 6820

200 13808 6263 14008 6354 15991 7254 16191 7344

225 15244 6915 15466 7015 17427 7905 17649 8006

250 15622 7086 15862 7195 17805 8076 18045 8185

275 16820 7630 17095 7754 18975 8607 19250 8732

300 17965 8149 18265 8285 20121 9127 20421 9263

InvisiSound™ Ultimate

150 12133 5504 12279 5570 14292 6483 14438 6549

165 13177 5977 13333 6048 15332 6955 15488 7025

180 13498 6123 13681 6206 15653 7100 15836 7183

200 14608 6626 14808 6717 16791 7616 16991 7707

225 16044 7278 16266 7378 18227 8268 18449 8368

250 16422 7449 16662 7558 18605 8439 18845 8548

275 17620 7992 17895 8117 19775 8970 20050 9095

300 18765 8512 19040 8636 20921 9490 21196 9614

Notes:

1. Weights include factory charge of refrigerant and oil, as well as architectural louvered panels. See Unit Length section of General Data chapter to determine unit length.

2. Model number digit 12 = 1 or 2

3. Model number digit 12 = 3

Page 18

AC-SVX001A-EN

Service Clearance

Figure 3. Unit service clearance requirements

36” (914.4mm)

40”

(1016

mm)

24” (600.1mm)

Control

Panel

NO OBSTRUCTIONS ABOVE UNIT

TOP VIEW

See

note 1

85” (2160mm)

See note 2

NNootteess::

1. A full 40” clearance is required in front of the control panel. Must be measured from front of panel, not end of unit base.

2. Clearance of 85” on the side of the unit is required for coil replacement. Preferred side for coil replacement is shown (left side of the unit, as facing control panel), however either side is acceptable.

DDiimmeennssiioonnss aanndd WWeeiigghhttss

Page 19

AC-SVX001A-EN

Unit Dimensions

Figure 4. Unit dimensions, standard length

DDiimmeennssiioonnss aanndd WWeeiigghhttss

Page 20

AC-SVX001A-EN

Table 4. Unit dimensions, standard length

Unit Size

150 165 180 200

225, 250

275 300

Dim in

A 158.6 4027.0 211.4 5368.8 212.5 5397.4 265.3 6739.5 265.3 6739.5 318.1 8080.5 370.9 9422.5

B 52.4 1330.0 105.2 2671.9 103.5 2629.4 156.4 3971.5 156.4 3971.5 209.0 5308.5 261.8 6650.5

C 11.8 300.0 11.8 300.0 11.8 300.0 11.8 300.0 11.8 300.0 11.8 300.0 11.8 300.0

D 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0

E 78.8 2000.0 74.8 1900.0 74.8 1900.0 74.8 1900.0 74.8 1900.0 61.4 1560.0 74.8 1900.0

F 63.0 1600.0 118.1 3000.0 118.1 3000.0 100.8 2560.0 100.8 2560.0 72.4 1840.0 100.8 2560.0

G 76.4 1940.0 76.4 1940.0 137.8 3500.0 174.8 4440.0

H 25.0 635.0 25.0 635.0 25.0 635.0 25.0 635.0 25.0 635.0 25.0 635.0 25.0 635.0

I 128.1 3255.0 145.6 3699.0 145.6 3699.0 65.9 1674.0 65.9 1674.0 65.9 1674.0 65.9 1674.0

J 120.5 3061.0 120.5 3061.0 158.5 4026.0 79.7 2024.0

K 184.5 4686.0

L 223.0 5663.5 275.8 7005.5 275.8 7005.5 328.6 8347.5 328.6 8347.5 381.5 9689.5 434.3 11031.5

M 228.9 5813.0 281.7 7155.0 281.7 7155.0 334.5 8497.0 334.5 8497.0 387.4 9839.0 440.2 11181.0

N 20.4 519.5 20.4 519.5 19.6 497.5 19.6 497.5 21.8 553.6 20.6 522.5 20.6 522.5

O 17.7 449.5 17.7 449.5 15.4 390.5 15.4 390.5 17.6 446.6 16.1 407.7 16.1 407.7

P 49.3 1252.5 49.3 1252.5 49.9 1268.0 49.9 1268.0 49.9 1268.0 51.3 1303.3 51.3 1303.3

38.5 977.5 38.5 977.5 37.9 962.0 37.9 962.0 37.9 962.0 36.5 927.3 36.5 927.3

R 19.3 489.5 19.3 489.5 17.6 447.5 17.6 447.5 19.8 503.6 18.2 462.5 18.2 462.5

S 19.7 499.5 19.7 499.5 18.2 462.5 18.2 462.5 20.4 518.6 18.9 480.5 18.9 480.5

T 15.8 400.0 15.8 400.0 15.8 400.0 15.8 400.0 15.8 400.0 15.8 400.0 15.8 400.0

U 66.9 1700.0 66.9 1700.0 66.9 1700.0 66.9 1700.0 66.9 1700.0 66.9 1700.0 66.9 1700.0

V 59.1 1500.0 55.1 1400.0 55.1 1400.0 55.1 1400.0 55.1 1400.0 41.8 1060.0 55.1 1400.0

W 63.0 1600.0 118.1 3000.0 118.1 3000.0 100.8 2560.0 100.8 2560.0 72.4 1840.0 100.8 2560.0

X 76.4 1940.0 76.4 1940.0 137.8 3500.0 155.1 3940.0

Y 53.6 1362.5 106.5 2704.4 105.5 2679.4 158.3 4021.5 158.3 4021.5 210.3 5340.0 263.1 6682.0

DDiimmeennssiioonnss aanndd WWeeiigghhttss

Page 21

AC-SVX001A-EN

Figure 5. Unit dimensions, extended length

DDiimmeennssiioonnss aanndd WWeeiigghhttss

Page 22

AC-SVX001A-EN

Table 5. Unit dimensions, extended length

Unit Size

150 165 180 200

225, 250

275 300

Dim in

A 158.6 4027.0 211.4 5368.8 212.5 5397.4 265.3 6739.5 265.3 6739.5 318.1 8080.5 370.9 9422.5

B 52.4 1330.0 105.2 2671.9 103.5 2629.4 156.4 3971.5 156.4 3971.5 209.0 5308.5 261.8 6650.5

C 27.6 700.0 27.6 700.0 27.6 700.0 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0

D 86.6 2200.0 86.6 2200.0 86.6 2200.0 63.0 1600.0 63.0 1600.0 63.0 1600.0 63.0 1600.0

E 80.4 2042.0 76.4 1942.0 76.4 1942.0 76.4 1942.0 76.4 1942.0 63.1 1602.0 76.4 1942.0

F 63.0 1600.0 118.1 3000.0 118.1 3000.0 59.1 1500.0 59.1 1500.0 72.4 1840.0 100.8 2560.0

G 118.1 3000.0 118.1 3000.0 137.8 3500.0 174.8 4440.0

H 55.1 1400.0 55.1 1400.0 55.1 1400.0 58.3 1482.0 58.3 1482.0 58.3 1482.0 58.3 1482.0

I 150.9 3832.0 168.4 4276.0 168.4 4276.0 85.4 2169.0 85.4 2169.0 85.4 2169.0 85.4 2169.0

J 120.5 3061.0 120.5 3061.0 158.5 4026.0 79.7 2024.0

K 184.5 4686.0

L 275.8 7005.5 328.6 8347.5 328.6 8347.5 381.5 9689.5 381.5 9689.5 434.3 11031.5 487.1 12373.5

M 281.7 7155.0 334.5 8497.0 334.5 8497.0 387.4 9839.0 387.4 9839.0 440.2 11181.0 493.0 12523.0

N 20.4 519.5 20.4 519.5 19.6 497.5 19.6 497.5 21.8 553.6 20.6 522.5 20.6 522.5

O 17.7 449.5 17.7 449.5 15.4 390.5 15.4 390.5 17.6 446.6 16.1 407.7 16.1 407.7

P 49.3 1252.5 49.3 1252.5 49.9 1268.0 49.9 1268.0 49.9 1268.0 51.3 1303.3 51.3 1303.3

38.5 977.5 38.5 977.5 37.9 962.0 37.9 962.0 37.9 962.0 36.5 927.3 36.5 927.3

R 19.3 489.5 19.3 489.5 17.6 447.5 17.6 447.5 19.8 503.6 18.2 462.5 18.2 462.5

S 19.7 499.5 19.7 499.5 18.2 462.5 18.2 462.5 20.4 518.6 18.9 480.5 18.9 480.5

T 27.6 700.0 27.6 700.0 27.6 700.0 51.2 1300.0 51.2 1300.0 51.2 1300.0 51.2 1300.0

U 86.6 2200.0 86.6 2200.0 86.6 2200.0 63.0 1600.0 63.0 1600.0 63.0 1600.0 63.0 1600.0

V 80.4 2042.0 76.4 1942.0 76.4 1942.0 76.4 1942.0 76.4 1942.0 63.1 1602.0 76.4 1942.0

W 63.0 1600.0 118.1 3000.0 118.1 3000.0 59.1 1500.0 59.1 1500.0 72.4 1840.0 63.0 1600.0

X 118.1 3000.0 118.1 3000.0 137.8 3500.0 155.1 3940.0

Y 53.6 1362.5 106.5 2704.4 105.5 2679.4 158.3 4021.5 158.3 4021.5 210.3 5340.0 263.1 6682.0

DDiimmeennssiioonnss aanndd WWeeiigghhttss

Page 23

AC-SVX001A-EN

Installation Mechanical

Location Requirements

Sound Considerations

• Locate the unit away from sound-sensitive areas.

• Install the optional elastomeric isolators under the unit. See Isolation and Sound Emission section.

• Chilled water piping should not be supported by chiller frame.

• Install rubber vibration isolators in all water piping.

• Use flexible electrical conduit.

• Seal all wall penetrations.

NNoottee:: Consult an acoustical engineer for critical

applications.

Foundation

Provide rigid, non-warping mounting pads or a concrete foundation of sufficient strength and mass to support the applicable operating weight (i.e., including completed piping, and full operating charges of refrigerant, oil and water). See Dimensions and Weights chapter for unit operating weights. Once in place, the unit must be level within 1/4” (6.4 mm) across the length and width of the unit. The Trane Company is not responsible for equipment problems resulting from an improperly designed or constructed foundation.

Clearances

Provide enough space around the unit to allow the installation and maintenance personnel unrestricted access to all service points. See submittal drawings for the unit dimensions, to provide sufficient clearance for the opening of control panel doors and unit service. See Dimensions and Weights chapter for minimum clearances. In all cases, local codes which require additional clearances will take precedence over these recommendations.

For close spacing information, see RLC-PRB037*-EN.

Lifting and Moving Instructions

WWAARRNNIINNGG

HHeeaavvyy OObbjjeecctt!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn uunniitt ddrrooppppiinngg wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy,, aanndd eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy ddaammaaggee.. EEnnssuurree tthhaatt aallll tthhee lliiffttiinngg eeqquuiippmmeenntt uusseedd iiss pprrooppeerrllyy rraatteedd ffoorr tthhee wweeiigghhtt ooff tthhee uunniitt bbeeiinngg lliifftteedd.. EEaacchh ooff tthhee ccaabblleess ((cchhaaiinnss oorr sslliinnggss)),, hhooookkss,, aanndd sshhaacckklleess uusseedd ttoo lliifftt tthhee uunniitt mmuusstt bbee ccaappaabbllee ooff ssuuppppoorrttiinngg tthhee eennttiirree wweeiigghhtt ooff tthhee uunniitt.. LLiiffttiinngg ccaabblleess ((cchhaaiinnss oorr sslliinnggss)) mmaayy nnoott bbee ooff tthhee ssaammee lleennggtthh.. AAddjjuusstt aass nneecceessssaarryy ffoorr eevveenn uunniitt lliifftt..

WWAARRNNIINNGG

IImmpprrooppeerr UUnniitt LLiifftt!!

FFaaiilluurree ttoo pprrooppeerrllyy lliifftt uunniitt iinn aa LLEEVVEELL ppoossiittiioonn ccoouulldd rreessuulltt iinn uunniitt ddrrooppppiinngg aanndd ppoossssiibbllyy ccrruusshhiinngg ooppeerraattoorr//tteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy,, aanndd eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy ddaammaaggee.. TTeesstt lliifftt uunniitt aapppprrooxxiimmaatteellyy 2244 iinncchheess ((6611 ccmm)) ttoo vveerriiffyy pprrooppeerr cceenntteerr ooff ggrraavviittyy lliifftt ppooiinntt.. TToo aavvooiidd ddrrooppppiinngg ooff uunniitt,, rreeppoossiittiioonn lliiffttiinngg ppooiinntt iiff uunniitt iiss nnoott lleevveell..

WWAARRNNIINNGG

PPrrooppeerr LLiiffttiinngg CCoonnffiigguurraattiioonn RReeqquuiirreedd!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd ccaauussee tthhee uunniitt ttoo ddrroopp wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh,, sseerriioouuss iinnjjuurryy oorr eeqquuiippmmeenntt ddaammaaggee.. UUssee OONNLLYY lliiffttiinngg llooccaattiioonnss ddeessiiggnnaatteedd wwiitthh llaabbeell sshhoowwnn bbeellooww.. DDOO NNOOTT uussee llooccaattiioonnss mmaarrkkeedd wwiitthh ddoo--nnoott--lliifftt llaabbeell.. SSeeee ffoolllloowwiinngg ffiigguurreess ffoorr aacccceeppttaabbllee lliiffttiinngg ccoonnffiigguurraattiioonn,, aanndd rreeffeerr ttoo llaabbeellss oonn tthhee uunniitt..

Figure 6. Lift/Do Not Lift labels

Lift Do Not Lift

Page 24

AC-SVX001A-EN

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

MMoovviinngg tthhee cchhiilllleerr uussiinngg aa ffoorrkk lliifftt ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt oorr pprrooppeerrttyy--oonnllyy ddaammaaggee.. DDoo nnoott uussee aa ffoorrkk lliifftt ttoo mmoovvee tthhee cchhiilllleerr!!

IImmppoorrttaanntt::

• See unit nameplate and/or unit submittal for total shipping weight.

• See following figures for unit lifting configuration.

• See Dimensions and Weights chapter, or unit submittal, for lifting point locations.

• See Center of Gravity section for more information.

Figure 7. 4–point lift configuration — 150, 160, 180 ton units

96” (2438mm) Spreader Bar

Lifting Location 3 (Lifting location 4 located on other side of unit)

Lifting Location 1 (Lifting location 2 located on other side of unit)

Control Panel

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 25

AC-SVX001A-EN

Figure 8. 6–point lift configuration — 200, 225, 250, 275 ton units

96” (2438mm) Spreader Bar

96”

(2438mm)

Spreader Bar

Lifting Location 1 (Lifting location 2 located on other side of unit)

Lifting Location 3 (Lifting location 4 located on other side of unit)

Lifting Location 5 (Lifting location 6 located on other side of unit)

Control Panel

Figure 9. 8–point lift configuration — 300 ton units

96” (2438mm) Spreader Bar

Qty 2

Lifting Location 1 (Lifting location 2 located on other side of unit)

Lifting Location 3 (Lifting location 4 located on other side of unit)

Lifting Location 5 (Lifting location 6 located on other side of unit)

Lifting Location 7 (Lifting location 8 located on other side of unit)

Control Panel

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 26

AC-SVX001A-EN

Center of Gravity

Figure 10. Center of gravity

END VIEW

(Non-Control Panel End)

SIDE VIEW

Control Panel

Table 6. Center of gravity dimensions

Unit Size

CGx

CGy

CGz CGx

CGy

CGz

Standard Length Unit Extended Length Unit

150 93.9 2384 44.2 1122 44.2 1124 128.2 3255 44.0 1118 43.3 1100

165 105.8 2686 44.2 1122 45.9 1166 139.1 3532 44.2 1124 44.9 1142

180 106.0 2691 44.5 1131 45.6 1159 139.6 3545 44.5 1129 44.7 1135

200 114.1 2898 44.1 1121 47.2 1199 147.2 3738 44.2 1124 46.3 1175

225 115.8 2941 44.1 1120 45.2 1148 148.8 3780 44.2 1122 44.4 1129

250 115.1 2924 44.1 1120 45.6 1158 149.0 3785 44.1 1121 44.8 1139

275 127.7 3242 44.0 1117 46.1 1172 162.3 4122 44.2 1122 45.4 1153

300 139.5 3544 44.0 1116 47.1 1197 174.3 4427 43.8 1113 46.4 1178

Isolation and Sound Emission

The most effective form of isolation is to locate the unit away from any sound sensitive area. Structurally transmitted sound can be reduced by elastomeric vibration eliminators. Spring isolators are not recommended. Consult an acoustical engineer in critical sound applications.

For maximum isolation effect, isolate water lines and electrical conduit. Wall sleeves and rubber isolated piping hangers can be used to reduce the sound transmitted through water piping. To reduce the sound transmitted through electrical conduit, use flexible electrical conduit.

State and local codes on sound emissions should always be considered. Since the environment in which a sound source is located affects sound pressure, unit placement must be carefully evaluated. Sound power levels for Stealth chillers are available on request.

Unit Isolation and Leveling

For additional reduction of sound and vibration, install the optional elastomeric isolators.

Construct an isolated concrete pad for the unit or provide concrete footings at the unit mounting points.

Mount the unit directly to the concrete pads or footings.

Level the unit using the base rail as a reference. The unit must be level within 1/4” (6.4 mm) over the entire length and width. Use shims as necessary to level the unit.

Elastomeric Isolators

NNoottee:: See unit submittal, or tables in this section, for

point weights, isolator locations and isolator selections.

1. Secure the isolators to the mounting surface using the mounting slots in the isolator base plate. Do not fully tighten the isolator mounting bolts at this time.

2. Align the mounting holes in the base of the unit with the threaded positioning pins on the top of the isolators.

3. Lower the unit onto the isolators and secure the isolator to the unit with a nut.

4. Level the unit carefully. Fully tighten the isolator mounting bolts.

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 27

AC-SVX001A-EN

Figure 11. Elastomeric isolator

0.50 in

1.60±0.25

Mounting molded in neoprene

3.0

2.75

0.38

1/2 - 13NC - 2B

0.56 in

Isolator

Max Load

(lb)

Max Deflection

(in)

A B C D E F G

Type

Black-60 1100 0.5 2.5 2.88 0.25 1.13 5.50 4.12 3.38 RDP-3

Brown-61 1500 0.5 3.0 2.75 0.38 1.60 6.25 5.00 4.63 RDP-4

Red-62 2250 0.5 3.0 2.75 0.38 1.60 6.25 5.00 4.63 RDP-4

Green-63 3000 0.5 3.0 2.75 0.38 1.60 6.25 5.00 4.63 RDP-4

Black-64 4000 0.5 3.0 2.75 0.38 1.60 6.25 5.00 4.63 RDP-4

Mounting Locations, Weights, Isolators

See figure below for mounting point location designations.

Figure 12. Mounting point locations (top view)

1 3 5 7

Control panel

2 4 6 8 10

NNoottee:: Quantity of isolators varies with unit. See

submittal for actual number required for specific unit.

Point Weights

Table 7. Point weights, units with InvisiSound standard or superior option - I-P (lb)

Unit Size

Point Weights (lb)

1 2 3 4 5 6 7 8 9 10

Standard Length Units

150 1818 1609 1661 1478 1516 1586 731 932

165 1752 1710 1709 1652 1744 1768 941 1099

180 1774 1757 1741 1723 1781 1844 952 1124

200 1777 1823 1744 1651 1714 1698 1501 1636 126 136

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 28

AC-SVX001A-EN

Table 7. Point weights, units with InvisiSound standard or superior option - I-P (lb) (continued)

Unit Size

Point Weights (lb)

1 2 3 4 5 6 7 8 9 10

225 1966 1882 2000 1896 1911 1928 1595 1816 113 135

250 2014 1939 2069 1964 1972 1981 1609 1827 111 133

275 1942 1845 1913 1790 1839 1812 1832 2023 870 954

300 1991 1934 2137 2038 2151 2104 1951 2053 741 862

Extended Length Units

150 2268 2021 2036 1850 1687 1881 739 1008

165 2181 1966 2115 2006 2139 2390 768 965

180 2147 1936 2181 2041 2224 2574 771 977

200 2583 2375 2157 2083 1843 2047 736 861 610 693

225 2806 2479 2418 2266 2040 2311 785 969 610 741

250 2844 2519 2497 2342 2112 2384 801 982 597 723

275 2699 2394 2417 2282 2297 2538 994 1204 1013 1133

300 2888 2488 2575 2374 2093 2281 1820 2090 708 802

Table 8. Point weights, units with InvisiSound standard or superior option - SI (kg)

Unit Size

Point Weight (kg)

1 2 3 4 5 6 7 8 9 10

Standard Length Units

150 824 730 753 670 688 719 332 423

165 794 775 775 749 791 802 427 499

180 804 797 790 781 808 836 432 510

200 806 827 791 749 777 770 681 742 57 62

225 892 854 907 860 867 874 723 824 51 61

250 913 879 938 891 894 898 730 828 51 60

275 881 837 868 812 834 822 831 917 395 433

300 903 877 969 924 976 954 885 931 336 391

Extended Length Units

150 1029 916 923 839 765 853 335 457

165 989 892 959 910 970 1084 348 437

180 974 878 989 926 1009 1167 350 443

200 1172 1077 978 945 836 928 334 390 277 314

225 1272 1124 1097 1028 925 1048 356 439 277 336

250 1290 1142 1132 1062 958 1081 363 445 271 328

275 1224 1086 1096 1035 1042 1151 451 546 459 514

300 1310 1128 1168 1077 949 1034 825 948 321 364

Table 9. Point weights, units with InvisiSound ultimate option - I-P (lb)

Unit Size

Point Weights (lb)

1 2 3 4 5 6 7 8 9 10

Standard Length Units

150 1818 1609 1861 1678 1716 1786 731 932

165 1752 1710 1909 1852 1944 1968 941 1099

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 29

AC-SVX001A-EN

Table 9. Point weights, units with InvisiSound ultimate option - I-P (lb) (continued)

Unit Size

Point Weights (lb)

1 2 3 4 5 6 7 8 9 10

180 1774 1757 1941 1923 1981 2044 952 1124

200 1777 1823 1944 1851 1914 1898 1501 1636 126 136

225 1966 1882 2200 2096 2111 2128 1595 1816 113 135

250 2014 1939 2269 2164 2172 2181 1609 1827 111 133

275 1942 1845 2113 1990 2039 2012 1832 2023 870 954

300 1991 1934 2337 2238 2351 2304 1951 2053 741 862

Extended Length Units

150 2268 2021 2236 2050 1887 2081 739 1008

165 2181 1966 2315 2206 2339 2590 768 965

180 2147 1936 2381 2241 2424 2774 771 977

200 2583 2375 2357 2283 2043 2247 736 861 610 693

225 2806 2479 2618 2466 2240 2511 785 969 610 741

250 2844 2519 2697 2542 2312 2584 801 982 597 723

275 2699 2394 2617 2482 2497 2738 994 1204 1013 1133

300 2888 2488 2775 2574 2293 2481 1820 2090 708 802

Table 10. Point weights, units with InvisiSound ultimate option - SI (kg)

Unit Size

Point Weight (kg)

1 2 3 4 5 6 7 8 9 10

Standard Length Units

150 824 730 844 761 778 810 332 423

165 794 775 866 840 882 892 427 499

180 804 797 880 872 899 927 432 510

200 806 827 881 839 868 861 681 742 57 62

225 892 854 998 950 957 965 723 824 51 61

250 913 879 1029 981 985 989 730 828 51 60

275 881 837 958 903 925 912 831 917 395 433

300 903 877 1060 1015 1066 1045 885 931 336 391

Extended Length Units

150 1029 916 1014 930 856 944 335 457

165 989 892 1050 1000 1061 1175 348 437

180 974 878 1080 1016 1099 1258 350 443

200 1172 1077 1069 1035 926 1019 334 390 277 314

225 1272 1124 1187 1118 1016 1139 356 439 277 336

250 1290 1142 1223 1153 1049 1172 363 445 271 328

275 1224 1086 1187 1126 1133 1242 451 546 459 514

300 1310 1128 1259 1167 1040 1125 825 948 321 364

Isolator Selections

See Dimensions and Weights chapter for isolator mounting position dimensions.

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 30

AC-SVX001A-EN

Table 11. Elastomeric isolator selections

Unit Size

Isolator Position

1 2 3 4 5 6 7 8 9 10

Standard Length Units

150 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Brown 61 Brown 61 - -

165 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Red 62 Red 62 - -

180 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Red 62 Red 62 - -

200 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Black 60 Black 60

225 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Black 60 Black 60

250 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Black 60 Black 60

275 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Brown 61 Brown 61

300 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Brown 61 Brown 61

Extended Length Units

150 Green 63 Green 63 Green 63 Green 63 Green 63 Green 63 Brown 61 Brown 61 - -

165 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 - -

180 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 - -

200 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 Brown 61 Brown 61

225 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 Brown 61 Brown 61

250 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 Brown 61 Brown 61

275 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61 Brown 61 Brown 61

300 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Black 64 Brown 61 Brown 61

Compressor Mounting Bolt Removal

UUnniittss wwiitthh IInnvviissiiSSoouunndd™™ UUllttiimmaattee OOppttiioonn ((MMooddeell NNuummbbeerr DDiiggiitt 1122 == 33))

For chillers built with InvisiSound Ultimate option, compressor mounting bolts must be removed to assure minimum noise during operation. Use a 24mm socket to remove the (3) M15 x 75mm mounting bolts for each compressor. They are located under compressor mounting feet. See figure below.

IImmppoorrttaanntt::

• DO NOT DISCARD MOUNTING BOLTS. Store bolts in the control panel for future use.

• All mounting bolts MUST be reinstalled prior to compressor removal or unit move.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

FFaaiilluurree ttoo rreeiinnssttaallll bboollttss ccoouulldd ccaauussee sshhiiffttiinngg ooff ppaarrttss aanndd rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee.. DDoo nnoott rreemmoovvee ccoommpprreessssoorr oorr mmoovvee uunniitt wwiitthhoouutt rreeaattttaacchhiinngg ccoommpprreessssoorr mmoouunnttiinngg bboollttss..

Figure 13. Compressor mounting bolt removal

Compressor

Mounting Bolt

Compressor

Mounting

Foot

Isolator

Drainage

Locate the unit near a large capacity drain for water vessel drain-down during shutdown or repair. Evaporators are provided with drain connections. A vent on top of evaporator waterbox prevents vacuum by allowing air into evaporator for complete drainage. All local and national codes apply.

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 31

AC-SVX001A-EN

Refrigerant Pressure Relief Valves

Qty

Relief Valve

Setting

(psig)

Rated

Capacity

(lba/min)

Connection Size (in)

Field

(Pipe)

Factory

(Shell)

Evaporator

2 200 17.3

5/8 7/8–14

Qty

Relief Valve

Setting

(psig)

Rated

Capacity

(lba/min)

Connection Size (in)

Field

(Pipe)

Factory

(Shell)

Oil Separator

2 350 6.3

5/8 1/4–18

Evaporator Piping

Units are available with two or three pass configurations.

Figure 14. Evaporator pass configurations

2-Pass Evaporators

Control Panel End

3-Pass Evaporators

Top View

(Condenser removed for clarity)

End View

(Non-control panel end)

Outlet Waterbox

Inlet Waterbox

Top View

(Condenser removed for clarity)

End View

(Non-control panel end)

Inlet Waterbox (Outlet waterbox opposite end)

Outlet Water Connection

Inlet Water Connection

Outlet

Inlet

NNOOTTIICCEE

PPrrooppeerr WWaatteerr TTrreeaattmmeenntt RReeqquuiirreedd!!

TThhee uussee ooff uunnttrreeaatteedd oorr iimmpprrooppeerrllyy ttrreeaatteedd wwaatteerr ccoouulldd rreessuulltt iinn ssccaalliinngg,, eerroossiioonn,, ccoorrrroossiioonn,, aallggaaee oorr sslliimmee.. UUssee tthhee sseerrvviicceess ooff aa qquuaalliiffiieedd wwaatteerr ttrreeaattmmeenntt ssppeecciiaalliisstt ttoo ddeetteerrmmiinnee wwhhaatt wwaatteerr ttrreeaattmmeenntt,, iiff aannyy,, iiss rreeqquuiirreedd.. TTrraannee aassssuummeess nnoo rreessppoonnssiibbiilliittyy ffoorr eeqquuiippmmeenntt ffaaiilluurreess wwhhiicchh rreessuulltt ffrroomm uunnttrreeaatteedd oorr iimmpprrooppeerrllyy ttrreeaatteedd wwaatteerr,, oorr ssaalliinnee oorr bbrraacckkiisshh wwaatteerr..

NNOOTTIICCEE

EEvvaappoorraattoorr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd ccaauussee ddaammaaggee ttoo tthhee eevvaappoorraattoorr.. TThhee cchhiilllleedd wwaatteerr ccoonnnneeccttiioonnss ttoo tthhee eevvaappoorraattoorr aarree ttoo bbee ““vviiccttaauulliicc”” ttyyppee ccoonnnneeccttiioonnss.. DDoo nnoott aatttteemmpptt ttoo wweelldd tthheessee ccoonnnneeccttiioonnss,, aass tthhee hheeaatt ggeenneerraatteedd ffrroomm wweellddiinngg ccaann ccaauussee mmiiccrroossccooppiicc aanndd mmaaccrroossccooppiicc ffrraaccttuurreess oonn tthhee ccaasstt iirroonn wwaatteerrbbooxxeess tthhaatt ccaann lleeaadd ttoo pprreemmaattuurree ffaaiilluurree ooff tthhee wwaatteerrbbooxx.. TToo pprreevveenntt ddaammaaggee ttoo cchhiilllleedd wwaatteerr ccoommppoonneennttss,, ddoo nnoott aallllooww eevvaappoorraattoorr pprreessssuurree ((mmaaxxiimmuumm wwoorrkkiinngg pprreessssuurree)) ttoo eexxcceeeedd 115500 ppssiigg ((1100..55 bbaarr))..

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 32

AC-SVX001A-EN

• Evaporator water connections are grooved.

• Thoroughly flush all water piping to the unit before making the final piping connections to the unit.

• Components and layout will vary slightly, depending on the location of connections and the water source.

• A vent is provided on the top of the evaporator at the chilled water inlet. Be sure to provide additional vents at high points in the piping to bleed air from the chilled water system. Install necessary pressure gauges to monitor the entering and leaving chilled water pressures.

• Provide shutoff valves in lines to the gauges to isolate them from the system when they are not in use. Use rubber vibration eliminators to prevent vibration transmission through the water lines.

• If desired, install thermometers in the lines to monitor entering and leaving water temperatures.

• Install a balancing valve in the leaving water line to control water flow balance.

• Install shutoff valves on both the entering and leaving water lines so that the evaporator can be isolated for service.

Evaporator Piping Components

Piping components include all devices and controls used to provide proper water system operation and unit operating safety. These components and their general locations are given below.

Figure 15. Typical water piping components

Item

Description

Item

Description

Bypass Valve

Pressure Gauge

2 Isolation Valve FT Water Flow Switch

3 Vibration Eliminator T1

Evap Water Inlet Temp Sensor

Evaporator - End View (2-pass)

Evap Water Outlet Temp Sensor

Evaporator Waterbox (2-pass)

NOTES

6 Vent A

Isolate unit for initial water loop cleaning

7 Strainer B

Vent must be installed at the high point of the line

8 Drain C

Drain must be installed at the low point of the line

Entering Chilled Water Piping

• Air vents (to bleed air from system).

• Water pressure gauges with shutoff valves.

• Vibration eliminators.

• Shutoff (isolation) valves.

• Thermometers (if desired).

• Clean-out tees.

• Pipe strainer.

Leaving Chilled water Piping

• Air vents (to bleed air from system).

• Water pressure gauges with shutoff valves.

• Vibration eliminators.

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 33

AC-SVX001A-EN

• Shutoff (isolation) valves.

• Thermometers.

• Clean-out tees.

• Balancing valve.

Drains

A 1/2” drain connection is located under outlet end of evaporator waterbox for drainage during unit servicing. A shutoff valve must be installed on drain line.

Pressure Gauges

Install field-supplied pressure components as shown in figure above. Locate pressure gauges or taps in a straight run of pipe; avoid placement near elbows, etc. Be sure to install the gauges at the same elevation on each shell if the shells have opposite-end water connections.

To read manifolded pressure gauges, open one valve and close the other (depending upon the reading desired). This eliminates errors resulting from differently calibrated gauges installed at unmatched elevations.

Pressure Relief Valves

NNOOTTIICCEE

EEvvaappoorraattoorr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd ccaauussee ddaammaaggee ttoo tthhee eevvaappoorraattoorr.. TToo pprreevveenntt eevvaappoorraattoorr ddaammaaggee,, iinnssttaallll pprreessssuurree rreelliieeff vvaallvveess iinn tthhee eevvaappoorraattoorr wwaatteerr ssyysstteemm..

Install a water pressure relief valve in the evaporator inlet piping between the evaporator and the inlet shutoff valve, as shown in figure above. Water vessels with close-coupled shutoff valves have a high potential for hydrostatic pressure buildup on a water temperature increase. Refer to applicable codes for relief valve installation guidelines.

Evaporator Flow Switch

NNOOTTIICCEE

FFllooww SSwwiittcchh DDaammaaggee!!

IInnccoorrrreecctt vvoollttaaggee aapppplliiccaattiioonn ccoouulldd ccaauussee ddaammaaggee ttoo tthhee ffllooww sswwiittcchh.. FFllooww sswwiittcchh iiss oonn aa 2244VV cciirrccuuiitt.. DDoo NNOOTT aappppllyy 112200VV ttoo tthhee ffllooww sswwiittcchh..

The flow switch is factory-installed and programmed based on the operating conditions submitted with the order. The leaving evaporator temperature, fluid type and fluid concentration affect the selected flow switch. If the operating conditions on the job site change, the

flow switch may need to be replaced. Contact your local Trane Sales office for more information.

The sensor head includes 3 LEDs, two yellow and one green. Wait 15 seconds after power is applied to the sensor before evaluating LEDs for flow status. When wired correctly and flow is established, only the green LED should be lit. Following are the LED indicators:

• Green ON, both yellow OFF — Flow

• Green and outside yellow ON — No Flow

• Center yellow ON continuously — Miswire

Factory installed jumper wire W11 must be removed if using auxiliary contacts and/or additional proof of flow. See schematics in AC-SVE001*-EN for more details.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

IInnccoorrrreecctt wwiirriinngg ooff aauuxxiilliiaarryy ccoonnttaaccttss ccoouulldd ccaauussee eeqquuiippmmeenntt ddaammaaggee.. SSeeee sscchheemmaattiiccss ffoorr pprrooppeerr wwiirriinngg..

If using auxiliary flow sensing, both yellow LEDs come on initially when flow is stopped. The center yellow LED will turn off after approximately 7 seconds. The LED indicators are otherwise the same as indicated above.

Indexing Flow Switch

To properly index the flow switch, the following requirements must be met:

• The dot must be at a position no greater than 90° off Index.

• The torque must be between 22 ft-lb minimum and 74 ft-lb maximum.

• A minimum distance of 5x pipe diameter must be maintained between flow switch and any bends, valves, changes in cross sections, etc.

Figure 16. Proper flow switch indexing

Flow

Top View

Index

The flow switch must have the dot in the shaded area to the left of this line for proper indexing (±90° off Index).

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 34

AC-SVX001A-EN

Evaporator Waterside Pressure Drop Curves

Figure 17. Evaporator waterside pressure drop curve — 2–pass

2.5

7.5

12.5

17.5

22.5

27.5

32.5

37.5

42.5

47.5

0 200 400 600 800 1000 1200 1400

Pressure Drop (ft. H2O)

Water Flow (GPM)

300T

275T

250T

225T

200T

185T

165T

150T

Figure 18. Evaporator waterside pressure drop curve — 3–pass

0 100 200 300 400 500 600 700 800 900 1000

Pressure Drop (ft. H2O)

Water Flow (GPM)

300T

275T

250T

225T

200T

185T

165T

150T

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 35

AC-SVX001A-EN

Freeze Protection

One or more of the ambient freeze avoidance methods in the table below must be used to protect the chiller

from ambient freeze damage. See RF-PRB002*-EN for more information.

Method

Protects to ambient temperature

Notes

Water Pump Control AND Heaters

Down to -20°F

• Heaters alone will provide low ambient protection down to -20°F (-29°C), but will NOT

protect the evaporator from freezing as a result of charge migration. Therefore, it is required that water pump control be used in conjunction with heaters.

• Heaters are factory-installed on the evaporator and water piping and will protect them from freezing

• Install heat tape on all water piping, pumps, and other components that may be damaged if exposed to freezing temperatures. Heat tape must be designed for low ambient temperature applications. Heat tape selection should be based on the lowest expected ambient temperature.

• Tracer® UC800 controller can start the pump when freezing conditions are detected. For this option the pump must to be controlled by the Stealth unit and this function must be validated.

• Water circuit valves need to stay open at all times.

• Water pump control and heater combination will protect the evaporator down to any

ambient temperature provided power is available to the pump and the controller. This option will NOT protect the evaporator in the event of a power failure to the chiller unless backup power is supplied to the necessary components.

• When no chiller operation is possible and the pump is already off, UC800 pump control for freeze protection will command the pump to turn:

– ON if average of the evaporator entering water temperature, the evaporator leaving water

temperature, and the evaporator refrigerant pool temperature is less than Low Evaporator Refrigerant Temperature Cutout (LERTC) + 4°F for a period of time.

– OFF again if the evaporator refrigerant pool temperature rises above the LERTC + 6°F for a period

of time.

Note: Time period referenced for ON and Off conditions above is dependent on past running

conditions and present temperatures measured.

– ON if entering OR leaving water temperature< LWTC for 30°F-sec (17°C-sec)

– OFF again if water temperature > LWTC for 30 min

Freeze Inhibitor

Varies. See Low Evaporator Refrigerant Cutout, Glycol Requirements.

• Freeze protection can be accomplished by adding sufficient glycol to protect against freezing below the lowest ambient expected.

• Use of glycol type antifreeze reduces the cooling capacity of the unit and must be

considered in the design of the system specifications.

Drain Water Circuit

Below -20°F

• Shut off the power supply to the unit and to all heaters.

• Purge the water circuit.

• Blow out the evaporator to ensure no liquid is left in the evaporator.

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 36

AC-SVX001A-EN

NNOOTTIICCEE

EEvvaappoorraattoorr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww tthheessee iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn ddaammaaggee ttoo tthhee eevvaappoorraattoorr.. IIff iinnssuuffffiicciieenntt ccoonncceennttrraattiioonn oorr nnoo ffrreeeezzee iinnhhiibbiittoorr iiss uusseedd,, tthhee eevvaappoorraattoorr wwaatteerr ffllooww mmuusstt bbee ccoonnttrroolllleedd bbyy tthhee UUCC880000 AANNDD hheeaatteerrss mmuusstt bbee uusseedd ttoo aavvooiidd ccaattaassttrroopphhiicc ddaammaaggee ttoo tthhee eevvaappoorraattoorr dduuee ttoo ffrreeeezziinngg.. IItt iiss tthhee rreessppoonnssiibbiilliittyy ooff tthhee iinnssttaalllliinngg ccoonnttrraaccttoorr aanndd//oorr tthhee ccuussttoommeerr ttoo eennssuurree tthhaatt aa ppuummpp wwiillll ssttaarrtt wwhheenn ccaalllleedd uuppoonn bbyy tthhee cchhiilllleerr ccoonnttrroollss.. EEvveenn wwiitthh wwaatteerr ppuummpp ccoonnttrrooll,, aa ppoowweerr lloossss ooff aass lliittttllee aass 1155 mmiinnuutteess uunnddeerr ffrreeeezziinngg ccoonnddiittiioonnss ccaann ddaammaaggee tthhee eevvaappoorraattoorr.. OOnnllyy tthhee pprrooppeerr aaddddiittiioonn ooff ffrreeeezzee iinnhhiibbiittoorr oorr ccoommpplleettee ddrraaiinnaaggee ooff tthhee wwaatteerr cciirrccuuiitt ccaann eennssuurree nnoo eevvaappoorraattoorr ddaammaaggee iinn tthhee eevveenntt ooff aa ppoowweerr ffaaiilluurree..

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 37

AC-SVX001A-EN

Low Evaporator Refrigerant Cutout, Glycol Requirements

The table below shows the low evaporator temperature cutout for different glycol levels. Additional glycol beyond the recommendations will adversely effect unit performance. The unit efficiency will be reduced and the saturated evaporator temperature will be reduced. For some operating conditions this effect can be significant.

additional glycol is used, then use the actual percent glycol to establish the low refrigerant cutout setpoint.

NNoottee:: Table below is not a substitute for full unit

simulation for proper prediction of unit performance for specific operating conditions. For information on specific conditions, contact Trane product support.

Table 12. Low evaporator refrigerant temperature cutout (LERTC) and low water temperature cutout (LWTC)

Ethylene Glycol Propylene Glycol

Glycol

Percentage

(%)

Solution

Freeze Point

(°F)

Minimum

Recommended

LERTC (°F)

Minimum

Recommended

LWTC (°F)

Glycol

Percentage

(%)

Solution

Freeze Point

(°F)

Minimum

Recommended

LERTC (°F)

Minimum

Recommended

LWTC (°F)

0 32 28.6 35 0 32 28.6 35

2 31 27.6 34 2 31 27.6 34

4 29.7 26.3 32.7 4 29.9 26.5 32.9

5 29 25.6 32 5 29.3 25.9 32.3

6 28.3 24.9 31.3 6 28.7 25.3 31.7

8 26.9 23.5 29.9 8 27.6 24.2 30.6

10 25.5 22.1 28.5 10 26.4 23 29.4

12 23.9 20.5 26.9 12 25.1 21.7 28.1

14 22.3 18.9 25.3 14 23.8 20.4 26.8

15 21.5 18.1 24.5 15 23.1 19.7 26.1

16 20.6 17.2 23.6 16 22.4 19 25.4

18 18.7 15.3 21.7 18 20.9 17.5 23.9

20 16.8 13.4 19.8 20 19.3 15.9 22.3

22 14.7 11.3 17.7 22 17.6 14.2 20.6

24 12.5 9.1 15.5 24 15.7 12.3 18.7

25 11.4 8 14.4 25 14.8 11.4 17.8

26 10.2 6.8 13.2 26 13.8 10.4 16.8

28 7.7 4.3 10.7 28 11.6 8.2 14.6

30 5.1 1.7 8.1 30 9.3 5.9 12.3

32 2.3 -1.1 5.3 32 6.8 3.4 9.8

34 -0.7 -4.1 5 34 4.1 0.7 7.1

35 -2.3 -5 5 35 2.7 -0.7 5.7

36 -3.9 -5 5 36 1.3 -2.1 5

38 -7.3 -5 5 38 -1.8 -5 5

40 -10.8 -5 5 40 -5.2 -5 5

42 -14.6 -5 5 42 -8.8 -5 5

44 -18.6 -5 5 44 -12.6 -5 5

45 -20.7 -5 5 45 -14.6 -5 5

46 -22.9 -5 5 46 -16.7 -5 5

48 -27.3 -5 5 48 -21.1 -5 5

50 -32.1 -5 5 50 -25.8 -5 5

IInnssttaallllaattiioonn MMeecchhaanniiccaall

Page 38

AC-SVX001A-EN

Installation Electrical

General Recommendations

As you review this manual, keep in mind that:

• All field-installed wiring must conform to National Electric Code (NEC) guidelines, and any applicable state and local codes. Be sure to satisfy proper equipment grounding requirements per NEC.

• Compressor motor and unit electrical data (including motor kW, voltage utilization range, rated load amps) is listed on the chiller nameplate.

• All field-installed wiring must be checked for proper terminations, and for possible shorts or grounds.

• All electrical enclosures on CE marked chillers (unit model number digit 13 = C) have an environmental rating of IP53.

NNoottee:: Always refer to wiring diagrams shipped with

chiller or unit submittal for specific electrical schematic and connection information.

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

FFaaiilluurree ttoo ffoollllooww tthheessee iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee ddiissccoonnnneeccttss aanndd ddiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn aanndd AAFFDD ((AAddaappttiivvee FFrreeqquueennccyy™™ DDrriivvee)) ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

•• FFoorr vvaarriiaabbllee ffrreeqquueennccyy ddrriivveess oorr ootthheerr eenneerrggyy ssttoorriinngg ccoommppoonneennttss pprroovviiddeedd bbyy TTrraannee oorr ootthheerrss,, rreeffeerr ttoo tthhee aapppprroopprriiaattee mmaannuuffaaccttuurreerr’’ss lliitteerraattuurree ffoorr aalllloowwaabbllee wwaaiittiinngg ppeerriiooddss ffoorr ddiisscchhaarrggee ooff ccaappaacciittoorrss.. VVeerriiffyy wwiitthh aann aapppprroopprriiaattee vvoollttmmeetteerr tthhaatt aallll ccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..

•• DDCC bbuuss ccaappaacciittoorrss rreettaaiinn hhaazzaarrddoouuss vvoollttaaggeess aafftteerr iinnppuutt ppoowweerr hhaass bbeeeenn ddiissccoonnnneecctteedd.. FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. AAfftteerr ddiissccoonnnneeccttiinngg iinnppuutt ppoowweerr,, wwaaiitt ffiivvee ((55)) mmiinnuutteess ffoorr tthhee DDCC ccaappaacciittoorrss ttoo ddiisscchhaarrggee,, tthheenn cchheecckk tthhee vvoollttaaggee wwiitthh aa vvoollttmmeetteerr.. MMaakkee ssuurree DDCC bbuuss ccaappaacciittoorrss aarree ddiisscchhaarrggeedd ((00 VVDDCC)) bbeeffoorree ttoouucchhiinngg aannyy iinntteerrnnaall ccoommppoonneennttss..

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee AAddaappttiivvee FFrreeqquueennccyy

™™

DDrriivvee CCaappaacciittyy DDiisscchhaarrggee sseeccttiioonn,, aanndd PPRROODD-SSVVBB0066**--EENN..

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee -- PPrreessssuurriizzeedd FFllaammmmaabbllee FFlluuiidd!!

FFaaiilluurree ttoo ffoollllooww aallll eelleeccttrriiccaall ssaaffeettyy pprreeccaauuttiioonnss ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. DDoo nnoott ooppeerraattee ccoommpprreessssoorr wwiitthhoouutt tteerrmmiinnaall bbooxx ccoovveerr iinn ppllaaccee..

TThhee mmoottoorrss iinn tthhee ccoommpprreessssoorrss hhaavvee ssttrroonngg ppeerrmmaanneenntt mmaaggnneett mmoottoorrss aanndd hhaavvee tthhee ccaappaabbiilliittyy ttoo ggeenneerraattee vvoollttaaggee dduurriinngg ssiittuuaattiioonnss wwhheenn tthhee rreeffrriiggeerraanntt cchhaarrggee iiss bbeeiinngg mmiiggrraatteedd.. TThhiiss ppootteennttiiaall wwiillll bbee pprreesseenntt aatt tthhee mmoottoorr tteerrmmiinnaallss aanndd aatt tthhee oouuttppuutt ooff tthhee vvaarriiaabbllee ssppeeeedd ddrriivveess iinn tthhee ppoowweerr ppaanneell..

BBeeffoorree rreemmoovviinngg ccoommpprreessssoorr tteerrmmiinnaall bbooxx ccoovveerr ffoorr sseerrvviicciinngg,, oorr sseerrvviicciinngg ppoowweerr ssiiddee ooff ccoonnttrrooll ppaanneell,, CCLLOOSSEE CCOOMMPPRREESSSSOORR DDIISSCCHHAARRGGEE SSEERRVVIICCEE VVAALLVVEE aanndd ddiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr iinncclluuddiinngg rreemmoottee ddiissccoonnnneeccttss.. DDiisscchhaarrggee aallll mmoottoorr ssttaarrtt//rruunn ccaappaacciittoorrss.. FFoollllooww lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. VVeerriiffyy wwiitthh aann aapppprroopprriiaattee vvoollttmmeetteerr tthhaatt aallll ccaappaacciittoorrss hhaavvee ddiisscchhaarrggeedd..

TThhee ccoommpprreessssoorr ccoonnttaaiinnss hhoott,, pprreessssuurriizzeedd rreeffrriiggeerraanntt.. MMoottoorr tteerrmmiinnaallss aacctt aass aa sseeaall aaggaaiinnsstt tthhiiss rreeffrriiggeerraanntt.. CCaarree sshhoouulldd bbee ttaakkeenn wwhheenn sseerrvviicciinngg NNOOTT ttoo ddaammaaggee oorr lloooosseenn mmoottoorr tteerrmmiinnaallss..

WWAARRNNIINNGG

PPrreessssuurriizzeedd BBuurrnniinngg FFlluuiidd!!

FFaaiilluurree ttoo ffoollllooww tthhee iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. DDoo nnoott ooppeerraattee ccoommpprreessssoorr wwiitthhoouutt tteerrmmiinnaall bbooxx ccoovveerr iinn ppllaaccee..

Page 39

AC-SVX001A-EN

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg RReeqquuiirreedd!!

NNOOTTIICCEE

UUssee CCooppppeerr CCoonndduuccttoorrss OOnnllyy!!

FFaaiilluurree ttoo uussee ccooppppeerr ccoonndduuccttoorrss ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee aass tthhee eeqquuiippmmeenntt wwaass nnoott ddeessiiggnneedd oorr qquuaalliiffiieedd ttoo aacccceepptt ootthheerr ttyyppeess ooff ccoonndduuccttoorrss..

IImmppoorrttaanntt::

To prevent control malfunctions, do not run low voltage wiring (<30 V) in conduit with conductors carrying more than 30 volts.

Adaptive Frequency™™ Drive Capacitor Discharge

After disconnecting input power, wait five (5) minutes for the DC capacitors to discharge.

Using voltmeter, measure voltage on bus at bus access points. See figures below for location of bus access points, and details. Capacitors are fully discharged when voltage across these plus (+) and minus (-) points measures 0 VDC.

Figure 19. AFD dc bus measurement location

Bus Measurement Points

Figure 20. Bus measurement nodes detail

Positive (+) Node

Negative (-) Node

Units with Nitrogen Charge Option

For units with nitrogen charge option (model number digit 15 = 2), the unit must NOT have shore power, or unit power applied until the unit has been charged. Applying power will drive EXV valves closed, and will inhibit sufficient vac for unit charging.

Installer-Supplied Components

Customer wiring interface connections are shown in the electrical schematics and connection diagrams that are shipped with the unit. The installer must provide the following components if not ordered with the unit:

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 40

AC-SVX001A-EN

• Power supply wiring (in conduit) for all field-wired connections.

• All control (interconnecting) wiring (in conduit) for field supplied devices.

• Fused-disconnect switches or circuit breakers.

Power Supply Wiring

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee AAddaappttiivvee FFrreeqquueennccyy

™™

DDrriivvee CCaappaacciittyy DDiisscchhaarrggee sseeccttiioonn,, aanndd PPRROODD-SSVVBB0066**--EENN..

WWAARRNNIINNGG

PPrrooppeerr FFiieelldd WWiirriinngg aanndd GGrroouunnddiinngg RReeqquuiirreedd!!

All power supply wiring must be sized and selected accordingly by the project engineer in accordance with NEC Table 310-16.

All wiring must comply with local codes and the National Electrical Code. The installing (or electrical) contractor must provide and install the system interconnecting wiring, as well as the power supply wiring. It must be properly sized and equipped with the appropriate fused disconnect switches.

The type and installation location(s) of the fused disconnects must comply with all applicable codes.

NNOOTTIICCEE

UUssee CCooppppeerr CCoonndduuccttoorrss OOnnllyy!!

Incoming customer power location varies with unit configurations. See figures below.

• Control Panel

– Standard length units (model number digits 28,

29 = 0X)

– Units with optional harmonic filtration (model

number digit 29 = 1)

• Transformer: 200, 230 or 575 V units with transformer (model number digit 28 = 1)

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 41

AC-SVX001A-EN

Figure 21. Incoming customer power — control panel (right side view)

Control Panel

Incoming Customer Power Location

Standard Length Units

(model number digits 28, 29 = 0X)

Unit with optional Harmonic Mitigation

(model number digit 29 = 1)

Incoming

Customer

Power

Location

Incoming

Customer

Power

Location

Pulse Auto Transformer (harmonic mitigation)

Control Panel

Figure 22. Incoming customer power — transformer

200V, 230V and 575V units (Includes optional Transformer model number digit 28 = 1)

Incoming Customer Power Location

On Transformer

End of Unit

(non-control panel end)

Right side of unit

Incoming Customer

Power Location

(located on transformer)

Incoming Customer Power Location (located on transformer)

Transformer

Main Unit

Control

Panel

60 7/8”

(1546mm)

Cut holes into the location shown above for the appropriately-sized power wiring conduits. The wiring is passed through these conduits and connected to the terminal blocks, optional unit-mounted disconnects, or HACR type breakers.

The high voltage field-provided connections are made through patch plate on the right side of the main control panel or on the right side of the voltage autotransformer panel.

The low voltage connections are made through knockouts provided on the left side of the control panel. Additional grounds may be required for each 115 volt power supply to the unit. Green lugs are provided for 115V customer wiring.

Control Power Supply

The unit is equipped with a control power transformer. It is not necessary to provide additional control power voltage to the unit. No other loads should be connected to the control power transformer.

All units are factory-connected for appropriate labeled voltages.

Service Power Connection

The service power connection is a touch safe procedure to allow for binding the control system and

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 42

AC-SVX001A-EN

LLIDs. Service power connection allows for a NEMA 515 style extension cord to power on Class 2 devices (i.e. UC800, LLIDs, EXVs, and TD7 display) with an external power source, without the need of line voltage applied to the unit. This connection is to be made at 1XJ50. The extension cord power source is required to have upstream current protection rated at no more than 10A. The required voltage for the service power connection is 115V at 60Hz and 110V at 50Hz.

Heater Power Supply

The evaporator shell is insulated from ambient air and protected from freezing temperatures by thermostatically-controlled immersion heaters. See table below for evaporator heater summary. Whenever the water temperature drops to approximately 37°F (2.8°C), the thermostat energizes the heaters. The heaters will provide protection from ambient temperatures down to -20°F (-29°C).

NNOOTTIICCEE

EEvvaappoorraattoorr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn eevvaappoorraattoorr ddaammaaggee.. AA qquuaalliiffiieedd tteecchhnniicciiaann mmuusstt ccoonnffiirrmm ooppeerraattiioonn ooff tthhee tthheerrmmoossttaatt.. CCoonnttrrooll ppaanneell mmaaiinn pprroocceessssoorr ddooeess nnoott vveerriiffyy tthheerrmmoossttaatt ooppeerraattiioonn..

Table 13. Evaporator heater summary

Unit Size (tons)

Waterboxes

Supply

Return

2-pass Evaporator

150 to 165 400W 400W

180 to 200

400W (Qty 2)

400W

225 to 300 600W 600W

3-pass Evaporator

All sizes

400W (Qty 2)

400W

Chilled Water Pump Control

NNOOTTIICCEE

EEvvaappoorraattoorr DDaammaaggee!!

IIff tthhee mmiiccrroopprroocceessssoorr ccaallllss ffoorr aa ppuummpp ttoo ssttaarrtt aanndd wwaatteerr ddooeess nnoott ffllooww,, tthhee eevvaappoorraattoorr mmaayy bbee ddaammaaggeedd ccaattaassttrroopphhiiccaallllyy.. IItt iiss tthhee rreessppoonnssiibbiilliittyy ooff tthhee iinnssttaalllliinngg ccoonnttrraaccttoorr aanndd//oorr tthhee ccuussttoommeerr ttoo eennssuurree tthhaatt aa ppuummpp wwiillll aallwwaayyss bbee rruunnnniinngg wwhheenn ccaalllleedd uuppoonn bbyy tthhee cchhiilllleerr ccoonnttrroollss..

An evaporator water pump output relay’s normallyopen contact closes to start the evaporator water pump when the chiller is given a signal to go into the Auto

mode of operation from any source. The contact is opened to turn off the pump in the event of most machine level diagnostics to prevent the build up of pump heat.

The relay output is required to operate the Evaporator Water Pump (EWP) contactor. The relay’s contacts are compatible with 115/240 VAC control circuits. See Programmable Relays section for rating details. Normally, the EWP relay follows the AUTO mode of the chiller. Whenever the chiller has no diagnostics and is in the AUTO mode, regardless of where the auto command is coming from, the relay is energized and the normally-open contact is closed. When the chiller exits the AUTO mode, the relay’s normally-open contact is timed to open in an adjustable (using Tracer® TU service tool) 0 to 30 minutes. The nonAUTO modes in which the pump is stopped, include Reset, Stop, External Stop, Remote Display Stop, Stopped by Tracer, Start Inhibited by Low Ambient Temp, and Ice Building complete.

Table 14. Pump relay operation

Chiller Mode

Relay Operation

Auto Instant Close

Ice Building

Instant Close

Tracer Override Close

Stop Timed Open

Ice Complete Instant Open

Diagnostics Instant Operation

(a)

Chiller Shutdown

Diagnostics

(except freeze protection)

Instant Open

Freeze Protection related

chiller shutdown diagnostics

Initially: Remain Closed

Then: Delayed/Dependent Open

Chiller Off Cycle Freeze

Diagnostics

Instant Close – Dependent Open

(a)

Operation can be instant open or instant close, depending on diagnostic.

When going from Stop to Auto, the EWP relay is energized immediately. If evaporator water flow is not established in 20 minutes (for normal transition) or 4 minutes, 15 seconds (for pump commanded ON due to an override safety), the UC800 de-energizes the EWP relay and generates a non-latching diagnostic. If flow returns (e.g. someone else is controlling the pump), the diagnostic is cleared, the EWP is re-energized, and normal control resumed.

If evaporator water flow is lost once it had been established, the EWP relay remains energized and a non-latching diagnostic is generated. If flow returns, the diagnostic is cleared and the chiller returns to normal operation.

In general, when there is either a non-latching or latching diagnostic, the EWP relay is turned off as

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 43

AC-SVX001A-EN

though there was a zero time delay. Exceptions whereby the relay continues to be energized occur with:

• LLooww CChhiilllleedd WWaatteerr TTeemmppeerraattuurree ddiiaaggnnoossttiicc (nonlatching unless also accompanied by an Evap Leaving Water Temperature Sensor Diagnostic)

• IInntteerrrruupptt FFaaiilluurree ——AAFFDDxxAA ddiiaaggnnoossttiicc where x is either 1 or 2 to indicate which drive is affected), in which a compressor continues to draw current even after commanded to have shutdown.

• LLoossss ooff EEvvaappoorraattoorr WWaatteerr FFllooww ddiiaaggnnoossttiicc (nonlatching) and the unit is in the AUTO mode, after initially having proven evaporator water flow.

Programmable Relays

A programmable relay concept provides for enunciation or hardwired interlocking of certain events or states of the chiller, selected from a list of likely needs, while only using four physical output relays, as shown in the field wiring diagram. The four relays are provided (generally with a Quad Relay Output LLID) as part of the Programmable Relay Option. The relay’s contacts are isolated Form C (SPDT), suitable for use with 120 VAC circuits drawing up to 2.8 amps inductive,

7.2 amps resistive, or 1/3 HP and for 240 VAC circuits

drawing up to 0.5 amp resistive.

The list of events/states that can be assigned to the programmable relays can be found in the following table. The relay will be energized when the event/state occurs.

Table 15. Alarm and status relay output

configurations

Description

Alarm (Latching)

This output is true whenever there is any active latching shutdown diagnostic that targets the Unit, Circuit, or any of the Compressors on a circuit.

Alarm (Non-Latching)

This output is true whenever there is any active non-latching shutdown diagnostic that targets the Unit, Circuit, or any of the Compressors on a circuit.

Alarm

This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets the Unit, Circuit, or any of the Compressors on a circuit.

Alarm Ckt 1

This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets Circuit 1, or any of the Compressors on Circuit

Alarm Ckt 2

This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets Circuit 2, or any of the Compressors on Circuit 2.

Table 15. Alarm and status relay output configurations (continued)

Description

Unit Limit Mode

This output is true whenever a circuit on the unit has been running in one of the limit modes continuously for the Limit Relay debounce time. A given limit or overlapping of different limits must be in effect continuously for the debounce time prior to the output becoming true. It will become false if no limits are present for the debounce time.

Compressor Running

The output is true whenever any compressor is running.

Circuit 1 Running

The output is true whenever any compressor of Circuit 1 is running.

Circuit 2 Running

The output is true whenever any compressor of Circuit 2 is running.

Maximum Capacity

The output is true whenever the unit has reached maximum capacity continuously for the Max Capacity Relay debounce time. The output is false when the unit is not at maximum capacity continuously for the filter debounce time.

Head Pressure Relief Request

This relay output is energized anytime the chiller or a single circuit on the chiller is running in one of the following modes; Ice Making Mode, or Condenser Pressure Limit continuously for the duration specified by the Chiller Head Relief Relay Filter Time. The Chiller Head Relief Relay Filter Time is a service setpoint. The relay output is deenergized anytime the chiller exits all above modes continuously for the duration specified by the same Chiller Head Relief Relay Filter Time

Relay Assignments Using Tracer TU

Tracer®TU Service Tool is used to install the Programmable Relay Option package and assign any of the above list of events or status to each of the four relays provided with the option. (See Tracer® TU section of Controls chapter for more information on this service tool.) The relays to be programmed are referred to by the relay’s terminal numbers on the LLID board 1K13.

The default assignments for the four available relays of the Programmable Relay option are show in the table below.

Table 16. Default assignments

Relay Assignment

Relay 1 Terminals J2-1,2,3:

Unit Limit Mode

Relay 2 Terminals J2-4,5,6: Maximum Capacity

Relay 3 Terminals J2 - 7,8,9: Compressor Running

Relay 4 Terminals J2 -10,11,12:

Alarm

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 44

AC-SVX001A-EN

If any of the Alarm/Status relays are used, provide electrical power, 115 VAC with fused-disconnect to the panel and wire through the appropriate relays (terminals on 1K13). Provide wiring (switched hot, neutral, and ground connections) to the remote annunciation devices. Do not use power from the chiller’s control panel transformer to power these remote devices. See the field wiring diagrams which are shipped with the unit.

Low Voltage Wiring

The remote devices described below require low voltage wiring. All wiring between these remote input devices and the control panel must be made with shielded, twisted pair conductors. Ground the shielding only at the panel.

IImmppoorrttaanntt:: The remote devices described below

require low voltage wiring. All wiring to and from these remote input devices to the Control Panel must be made with shielded, twisted pair conductors. Be sure to ground the shielding only at the panel.

Emergency Stop

UC800 provides auxiliary control for a customer specified/installed latching trip out. When this customer-furnished remote contact 5K35 is provided, the chiller will run normally when the contact is closed. When the contact opens, the unit will trip on a latching diagnostic. This latched condition requires either a manual reset at the front of the control panel or a power cycle of the UC800 to clear.

Connect low voltage leads to terminal strip locations on 1K2. Refer to the field diagrams that are shipped with the unit.

Silver or gold-plated contacts are recommended. These customer-furnished contacts must be compatible with 24 VDC, 12 mA resistive load.

External Auto/Stop

If the unit requires the external Auto/Stop function, the installer must provide leads from the remote contacts 5K34 to the proper terminals of the LLID 1K2 on the control panel.

The chiller will run normally when the contacts are closed. When either contact opens, the compressor(s), if operating, will go to the RUN:UNLOAD operating mode and cycle off. Unit operation will be inhibited. Closure of the contacts will permit the unit to return to normal operation.

Field-supplied contacts for all low voltage connections must be compatible with dry circuit 24 VDC for a 12 mA resistive load. Refer to the field diagrams that are shipped with the unit.

External Circuit Lockout – Circuit #1 and #2

UC800 provides for an auxiliary input of a customer specified or installed contact closure, for individual inhibition of the operation of either or both circuits. If the contact (5K32 for Ckt1, or 5K33 for Ckt2) is closed, the respective refrigerant circuit will not operate.

Upon contact opening, the respective refrigerant circuit will run normally. This feature is used to restrict total chiller operation, e.g. during emergency generator operations.

Connections to 1K3 inputs are shown in the field diagrams that are shipped with the unit.

These customer-supplied contact closures must be compatible with 24 VDC, 12 mA resistive load. Silver or gold plated contacts are recommended

Ice Building Option

UC800 provides auxiliary control for a customer specified/installed contact closure for ice building if so configured and enabled. This output is known as the Ice Building Status Relay. The normally open contact will be closed when ice building is in progress and open when ice building has been normally terminated either through Ice Termination setpoint being reached or removal of the Ice Building command. This output is for use with the ice storage system equipment or controls (provided by others) to signal the system changes required as the chiller mode changes from “ice building” to “ice complete”. When contact 5K36 is provided, the chiller will run normally when the contact is open.

UC800 will accept either an isolated contact closure (External Ice Building command) or a Remote Communicated input (Tracer) to initiate and command the Ice Building mode.

UC800 also provides a “Front Panel Ice Termination Setpoint”, settable through Tracer® TU, and adjustable from 20 to 31°F (-6.7 to -0.5°C) in at least 1°F (1°C) increments.

NNoottee:: When in the ice building mode, and the

evaporator entering water temperature drops below the ice termination setpoint, the chiller terminates the ice building mode and changes to the ice building complete mode.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn ddaammaaggee ttoo ssyysstteemm ccoommppoonneennttss.. FFrreeeezzee iinnhhiibbiittoorr mmuusstt bbee aaddeeqquuaattee ffoorr tthhee lleeaavviinngg wwaatteerr tteemmppeerraattuurree..

Tracer® TU must also be used to enable or disable Ice Machine Control. This setting does not prevent the Tracer from commanding Ice Building mode.

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 45

AC-SVX001A-EN

Upon contact closure, the UC800 will initiate an ice building mode, in which the unit runs fully loaded at all times. Ice building shall be terminated either by opening the contact or based on the entering evaporator water temperature. UC800 will not permit the ice building mode to be reentered until the unit has been switched out of ice building mode (open 5K36 contacts) and then switched back into ice building mode (close 5K36 contacts.)

In ice building, all limits (freeze avoidance, evaporator, condenser, current) will be ignored. All safeties will be enforced.

If, while in ice building mode, the unit gets down to the freeze stat setting (water or refrigerant), the unit will shut down on a manually resettable diagnostic, just as in normal operation.

Connect leads from 5K36 to the proper terminals of 1K8. Refer to the field diagrams which are shipped with the unit.

Silver or gold-plated contacts are recommended. These customer furnished contacts must be compatible with 24 VDC, 12 mA resistive load.

External Chilled Water Setpoint (ECWS) Option

The UC800 provides inputs that accept either 4-20 mA or 2-10 VDC signals to set the external chilled water setpoint (ECWS). This is not a reset function. The input defines the setpoint. This input is primarily used with generic building automation systems (BAS). The chilled water setpoint set via the Tracer AdaptiView™ TD7 or through digital communication with Tracer (Comm3). The arbitration of the various chilled water setpoint sources is described in the flow charts at the end of the section.

The chilled water setpoint may be changed from a remote location by sending either a 2-10 VDC or 4-20 mA signal to the 1K14, terminals 5 and 6 LLID. 2-10 VDC and 4-20 mA each correspond to a 10 to 65°F (-12 to 18° C) external chilled water setpoint.

The following equations apply:

Voltage Signal

As generated from external source

VDC=0.1455*(ECWS) + 0.5454

As processed by UC800 ECWS=6.875*(VDC) - 3.75

Current Signal

As generated from external source

mA=0.2909(ECWS) + 1.0909

As processed by UC800 ECWS=3.4375(mA) - 3.75

If the ECWS input develops an open or short, the LLID will report either a very high or very low value back to the main processor. This will generate an informational

diagnostic and the unit will default to using the ront Panel (TD7) Chilled Water Setpoint.

Tracer TU Service Tool is used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA. Tracer TU is also used to install or remove the External Chilled Water Setpoint option as well as a means to enable and disable ECWS.

External Demand Limit Setpoint (EDLS) Option

Similar to the above, the UC800 also provides for an optional External Demand Limit Setpoint that will accept either a 210 VDC (default) or a 420 mA signal. The Demand Limit Setting can also be set via the Tracer AdaptiView™ TD7 or through digital communication with Tracer (Comm 3). The arbitration of the various sources of demand limit is described in the flow charts at the end of this section. The External Demand Limit Setpoint may be changed from a remote location by hooking up the analog input signal to the 1K14 LLID terminals 2 and 3. Refer to the following paragraph on Analog Input Signal Wiring Details. The following equations apply for EDLS:

Voltage Signal

As generated from external source

VDC+0.133*(%)-6.0

As processed by UC800 %=7.5*(VDC)+45.0

Current Signal

As generated from external source

mA=0.266*(%)-12.0

As processed by UC800 %=3.75*(mA)+45.0

If the EDLS input develops an open or short, the LLID will report either a very high or very low value back to the man processor. This will generate an informational diagnostic and the unit will default to using the Front Panel (Tracer AdaptiView™ TD7) Current Limit Setpoint.

The Tracer® TU Service Tool must be used to set the input signal type from the factory default of 2-10 VDC to that of 420 mA current. Tracer TU must also be used to install or remove the External Demand Limit Setpoint Option for field installation, or can be used to enable or disable the feature (if installed).

EDLS and ECWS Analog Input Signal Wiring

Both the ECWS and EDLS can be connected and setup as either a 210 VDC (factory default), 4-20 mA, or resistance input (also a form of 42OmA) as indicated below. Depending on the type to be used, the Tracer TU Service Tool must be used to configure the LLID and the MP for the proper input type that is being used. This is accomplished by a setting change on the

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 46

AC-SVX001A-EN

Custom Tab of the Configuration View within Tracer TU.

IImmppoorrttaanntt:: For proper unit operation, BOTH the EDLS

and ECWS settings MUST be the same (210 VDC or 4-20mA), even if only one input is to be used.

The J23 and J26 terminal is chassis grounded and terminal J2 1 and J24 can be used to source 12 VDC. The ECLS uses terminals J22 and J23. ECWS uses terminals J25 and J26. Both inputs are only compatible with highside current sources.

Figure 23. Wiring examples for EDLS and ECWS

J2-1 & 4 Dual J2-2 & 5 Analog J2-3 & 6 I/O LLID

Resistor

2-10 VDC, 4-20mA

I = 20/(R + 200)

Chilled Water Reset (CWR)

UC800 resets the chilled water temperature set point based on either return water temperature, or outdoor air temperature. Return Reset is standard, Outdoor Reset is optional.

The following shall be selectable:

• One of three Reset types:None, Return Water Temperature Reset, Outdoor Air Temperature

Reset, or Constant Return Water Temperature Reset.

• Reset Ratio setpoints: For outdoor air temperature reset there shall be both positive and negative reset ratios.

• Start Reset Setpoints.

• Maximum Reset setpints.

The equations for each type of reset are as follows:

RReettuurrnn

CWS' = CWS + RATIO (START RESET - (TWE - TWL))

and CWS' > or = CWS

and CWS' - CWS < or = Maximum Reset

OOuuttddoooorr

CWS' = CWS + RATIO * (START RESET - TOD)

and CWS' > or = CWS

and CWS' - CWS < or = Maximum Reset

wwhheerree

• CWS' is the new chilled water set point or the "reset CWS"

• CWS is the active chilled water set point before any reset has occurred, e.g. normally Front Panel, Tracer, or ECWS

• RESET RATIO is a user adjustable gain

• START RESET is a user adjustable reference

• TOD is the outdoor temperature

• TWE is entering evap. water temperature

• TWL is leaving evap. water temperature

• MAXIMUM RESET is a user adjustable limit providing the maximum amount of reset. For all types of reset, CWS' - CWS < or = Maximum Reset.

Reset Type Range Reset Ratio

Start Reset Max Reset Increment

Factory Default

Return 10 to 120%

4 to 30°F

(2.2 to 16.7 °C)

0 to 20°F

(0.0 to 11.1°C)

1% 50%

Outdoor 80 to -80%

50 to 130°F

(10 to 54.4°C)

0 to 20°F

0.0 to 11.1°C)

1% 10%

In addition to Return and Outdoor Reset, the MP provides a menu item for the operator to select a Constant Return Reset. Constant Return Reset will reset the leaving water temperature set point so as to provide a constant entering water temperature. The Constant Return Reset equation is the same as the Return Reset equation except on selection of Constant Return Reset, the MP will automatically set Ratio, Start Reset, and Maximum Reset to the following:

• RATIO = 100%

• START RESET = Design Delta Temp.

• MAXIMUM RESET = Design Delta Temp.

The equation for Constant Return is then as follows:

• CWS' = CWS + 100% (Design Delta Temp. - (TWE TWL)) and CWS' > or = CWS

• and CWS' - CWS < or = Maximum Reset

When any type of CWR is enabled, the MP will step the Active CWS toward the desired CWS' (based on the above equations and setup parameters) at a rate of 1 degree F every 5 minutes until the Active CWS equals

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 47

AC-SVX001A-EN

the desired CWS'. This applies when the chiller is running.

When the chiller is not running, CWS is reset immediately (within one minute) for Return Reset and at a rate of 1 degree F every 5 minutes for Outdoor Reset. The chiller will start at the Differential to Start value above a fully reset CWS or CWS' for both Return and Outdoor Reset.

Transformer Power Rating

See table below for power rating of optional transformer (unit model number digit 28 = 1).

Unit Size

Power Rating

150 to 200 tons 340 kVA

225 to 300 tons 470 kVA

Communications Interface

LonTalk Interface (LCI-C)

UC800 provides an optional LonTalk® Communication Interface (LCI-C) between the chiller and a building automation system (BAS). An LCI-C LLID shall be used

to provide "gateway" functionality between a LonTalk® compatible device and the chiller. The inputs/outputs include both mandatory and optional network variables as established by the L

ONMARK® Functional Chiller

Profile 8040.

NNoottee:: For more information see ACC-SVN100*-EN.

BACnet Interface (BCI-C)

Optional BACnet® Communication Interface for Chillers (BCI-C) is comprised of a Tracer® UC800 controller with interface software. It is a nonprogrammable communications module that allows units to communicate on a BACnet® communications network.

NNoottee:: For more information, see BAS-SVP01*-EN.

Modbus Remote Terminal Unit Interface

Modicon Communication Bus (Modbus™) enables the chiller controller to communicate as a slave device on a Modbus™ network. Chiller setpoints, operating modes, alarms and status can be monitored and controlled by a Modbus™ master device.

NNoottee:: For more information, see BAS-SVP01*-EN.

IInnssttaallllaattiioonn EElleeccttrriiccaall

Page 48

AC-SVX001A-EN

Operating Principles

This section contains an overview of the operation and maintenance of units equipped with UC800 control systems. It describes the overall operating principles of the Ascend™ ACRA design.

Refrigeration Circuits

Each unit has two refrigerant circuits, with one rotary screw compressor per circuit. Each refrigerant circuit includes a compressor suction and discharge service valve, liquid line shutoff valve, removable core filter, liquid line sight glass with moisture indicator, charging port and an electronic expansion valve. Fully modulating compressors and electronic expansion valves provide variable capacity modulation over the entire operating range. Lower condensing temperatures and higher suction temperatures along with more efficient compressors and fans result in the premium efficiency level.

Refrigeration Cycle

The refrigeration cycle of the chiller is represented in the pressure enthalpy diagram shown in figure below. Key state points are indicated on the figure. The cycle for the full load AHRI design point is represented in the plot.

Figure 24. Pressure-enthalpy (P-h) diagram

R-134a

h (btu/lb)

P (psia)

120 140100806040200

100

200

500

600

The chiller uses a shell and tube evaporator design with refrigerant evaporating on the shell side and water flowing inside tubes having enhanced surfaces (states 4 to 1). The suction lines are designed to minimize pressure drop.(states 1 to 1b). The compressor is a twin-rotor helical rotary compressor designed similarly to the compressors offered in other Trane Screw Compressor Based Chillers (states 1b to 2). The discharge lines include a highly efficient oil separation system that removes 99.8% of the oil from the refrigerant stream going to the heat exchangers (states 2 to 2b). De-superheating, condensing and sub-cooling

is accomplished in a fin and tube air cooled heat exchanger where refrigerant is condensed in the tube (states 2b to 3b). Refrigerant flow through the system is balanced by an electronic expansion valve (states 3b to

4).

Refrigerant R-134a

The Ascend™ ACRA chiller uses environmentally friendly R-134a. Trane believes responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

Refrigerant R-134a is a medium pressure refrigerant. It may not be used in any condition that would cause the chiller to operate in a vacuum without a purge system. Ascend™ ACRA is not equipped with a purge system. Therefore, the chiller may not be operated in a condition that would result in a saturated condition in the chiller of –15°F (-26°C) or lower.

Refrigerant R-134a requires the use of specific POE oils as designated on the unit nameplate.

IImmppoorrttaanntt:: Use only R-134a and Trane Oil 00311 (bulk)/

00315 (1gal)/00317 (5gal) .

Compressor and Oil System

The rotary screw compressor is variable Vi (variable pressure ratio) semi-hermetic, direct drive with capacity control via a variable speed drive, rolling element bearings, differential refrigerant pressure oil pump and oil heater. To maximize efficiency, the variable Vi compressor is controlled to one of two possible states depending on the chiller system operating point and to provide ease of starting. The motor is a suction gas cooled, hermetically sealed, permanent magnet motor. An oil separator is provided separately from the compressor. Oil filtration is provided internal to the compressor. Check valves in the compressor discharge and lube oil system are also provided.

Condenser and Fans

Air-cooled condenser coils have aluminum fins mechanically bonded to internally finned seamless aluminum tubing. The tubing is a long life alloy designed to deliver corrosion performance that meets or exceeds microchannel coils. The condenser coil has

Page 49

AC-SVX001A-EN

an integral subcooling circuit. Condensers are factory proof tested and leak tested with helium in a mass spectrometer chamber. All tube connections are mechanical except the brazed copper to aluminum inlet and outlet connections. Condenser fans are direct-drive vertical discharge. The condenser fan motors are permanent magnet motors with an integrated drive to provide variable speed fan control for all fans and are designed with permanently lubricated ball bearings, internal temperature and current overload protection, and fault feedback as a standard product offering. The fan impeller is a nine bladed-shrouded fan made from heavy-duty molded plastic. Standard units will start and operate between 32 to 105°F (0 to 40°C) ambient.

The UC800 controls calculate optimum fan speed for maximum efficiency based on compressor load and outdoor air, resulting in high IPLV values

Evaporator

The evaporator is a tube-in-shell heat exchanger design constructed from carbon steel shells and tubesheets. Internally and externally finned seamless copper tubes are mechanically expanded into the tube sheets. The evaporator is designed, tested and marked in accordance with the ASME Boiler and Pressure Vessel Code for a refrigerant side working pressure of 200

psig. The evaporator is designed for a water side working pressure of 150 psig. Standard water connections are grooved for Victaulic style pipe couplings, with flange style connections optionally available. Waterboxes are available in 2 and 3 pass configurations and include a vent, a drain and fittings for temperature control sensors. Evaporators are insulated with 3/4 inch closed cell insulation. Evaporator water heaters with thermostat are provided to help protect the evaporator from freezing at ambient temperatures down to -20°F (-29°C). A factory installed flow switch is installed on the supply water box in the evaporator inlet connection.

Drive Cooling System

Each refrigeration circuit has a compressor drive cooling circuit. Each drive cooling circuit is a closed system, and includes a wet rotor pump that circulates a secondary heat transfer fluid between the adaptive frequency drive components, the heat sinks of the adaptive frequency drive, and a brazed plate heat exchanger. The pump is fed from a thermal expansion tank with a vented-pressure cap, which is also used as the circuit pressure relief. The circuit also includes a particulate strainer and a drain valve for servicing.

OOppeerraattiinngg PPrriinncciipplleess

Page 50

AC-SVX001A-EN

Controls

Overview

Ascend™ ACR units utilize the following control/ interface components:

• Tracer® UC800 Controller

• Tracer AdaptiView™ TD7 Operator Interface

UC800 Specifications

Wiring and Port Descriptions

The following figure illustrates the UC800 controller ports, LEDs, rotary switches, and wiring terminals. The numbered list following the figure corresponds to the numbered callouts in the illustration.

Page 51

AC-SVX001A-EN

Figure 25. UC800 wiring locations and connection ports

LINK

+ +

VDC

MBUS

2 3 4 5

7 8

Front View

Bottom View

1. Rotary Switches for setting BACnet® MAC address or MODBUS® ID.

2. LINK for BACnet® MS/TP, or MODBUS® Slave (two terminals, ±). Field wired if used.

3. LINK for BACnet® MS/TP, or MODBUS® Slave (two terminals, ±). Field wired if used.

4. Machine bus for existing machine LLIDs (IPC3 Tracer bus). IPC3 Bus: used for LonTalk

using LCI-

5. Power (210 mA at 24 Vdc) and ground terminations (same bus as Item 4). Factory wired.

6. Internal Modbus connection to AFDs (not a customer connection).

7. Marquee LED power and UC800 Status indicator (refer to the table in “LED Description and

Operation,” p. 51).

8. Status LEDs for the BAS link, MBus link, and IMC link.

9. USB device Type B connection for the service tool (Tracer® TU).

10. The Ethernet connection can only be used with the Tracer® AdaptiView™ display.

11. USB Host (not used).

Communication Interfaces

There are four connections on the UC800 that support the communication interfaces listed. Refer to the figure in “Wiring and Port Descriptions,” p. 50 for the locations of each of these ports.

• BACnet® MS/TP

• MODBUS® Slave

• LonTalk® using LCI-C (from the IPC3 bus)

Rotary Switches

There are three rotary switches on the front of the UC800 controller. Use these switches to define a threedigit address when the UC800 is installed in a BACnet® or MODBUS® system (e.g., 107, 127, etc.).

NNoottee:: Valid addresses are 001 to 127 for BACnet

and

001 to 247 for MODBUS

LED Description and Operation

There are ten LEDs on the front of the UC800. The following figure shows the locations of each LED and the following table describes their behavior in specific instances.

CCoonnttrroollss

Page 52

AC-SVX001A-EN

Figure 26. LED locations

LINK

LINK MBUS IMC

TX RX

ACT

SERVICE

Marquee LED

Table 17. LED behavior

LED UC800 Status

Marquee LED

Powered. If the Marquee LED is green solid, the UC800 is powered and no problems exist. Low power or malfunction. If the Marquee LED is red solid, the UC800 is powered but there are problems present. Alarm. The Marquee LED blinks red when an alarm exists.

LINK, MBUS,

IMC

The TX LED blinks green at the data transfer rate when the UC800 transfers data to other devices on the link. The RX LED blinks yellow at the data transfer rate when the UC800 receives data from other devices on the link.

Ethernet Link

The LINK LED is solid green if the Ethernet link is connected and communicating. The ACT LED blinks yellow at the data transfer rate when data flow is active on the link.

Service

The Service LED is solid green when pressed. For qualified service technicians only. Do NOT use.

IImmppoorrttaanntt:: Maintain at least 6 in. (16 cm) between low-

voltage (less than 30V) and high voltage circuits.

CCoonnttrroollss

Page 53

AC-SVX001A-EN

Tracer AdaptiView TD7 Display

Operator Interface

Information is tailored to operators, service technicians, and owners. When operating a chiller, specific information is neededon a day-to-day basis—

setpoints, limits, diagnostic information, and reports. This inoformation is provided through the Tracer® AdaptiView™ TD7 display. Logically organized groups of information— chiller modes of operation, active diagnostics, settings and reports put information conveniently at your fingertips.

Figure 27. TD7 screens

Operator Display Boot Screen Display Loading Data Home Screen, Auto Mode

Home Screen

The home screen (see following figure) provides the most frequently needed chiller status information on “touch targets” (the entire white rectangular areas) for each chiller component. Touching any touch target displays a screen containing more chiller status information related to each component.

Figure 28. Home screen

Table 18. Home screen items

Description

Resolution Units

Top Level Mode Ckt1

Top Level Mode Ckt2

Outdoor Air Temperature

XX.X

°F /°C

Percent Air Flow Ckt1/Ckt 2 X.X/X.X

Active Chiller Water Setpoint

XX.X

°F /°C

Table 18. Home screen items (continued)

Description

Resolution Units

Percent Speed 1A/2A

22.2 %

Evaporator Water flow Status

Flow/No Flow

Evap Entering/Leaving Water Temp

XX.X/XX.X °F /°C

Viewing Chiller Operating Modes

On the Reports screen, click Chiller Operating Modes to view the current operating status of the chiller in terms of the top-level operating mode and submodes.

NNoottee:: Chiller Operating Modes screen can also be

accessed from the chiller status button in the upper left corner of the screen.

Figure 29. Chiller operating modes

CCoonnttrroollss

Page 54

AC-SVX001A-EN

Table 19. Operating modes — chiller

Chiller Modes

Description

MP Resetting

Stopped

The chiller is not running either circuit, and cannot run without intervention, for instance to place chiller into the “Auto Mode” or to clear a manual reset chiller level diagnostic.

Local Stop Chiller is stopped by the AdaptiView Stop button command– cannot be remotely overridden.

Immediate Stop

Chiller is stopped by the AdaptiView Immediate Stop (by pressing the Stop then Immediate Stop buttons in succession) – previous shutdown was manually commanded to shutdown immediately.

No Circuits Available

The entire chiller is stopped by circuit diagnostics or lockouts.

Diagnostic Shutdown - Manual Reset The chiller is stopped by a Chiller Level diagnostic that requires manual intervention to reset.

Power Up Delay Inhibit: min:sec On Power up, the chiller will wait for the Power Up Delay Timer to expire.

Run Inhibit

The chiller is currently being inhibited from starting (and running), but may be allowed to start if the chiller inhibit or the Chiller or Circuit level (effecting both circuits) diagnostic conditions are manually or automatically cleared.

No Circuits Available

The entire chiller is stopped by circuit diagnostics or lockouts that may automatically clear.

Software Service Lock

TU service tool invoked chiller lockout to prevent operation of the chiller during certain procedures, such as configuration or binding

Ice Building Is Complete

The chiller is inhibited from running as the Ice Building process has been normally terminated on the evaporator entering temperature. The chiller will not start unless the ice building command (hardwired input or Building Automation System command) is removed or cycled.

Ice to Normal Transition

The chiller is inhibited from running for a brief period of time if it is commanded from active ice building mode into normal cooling mode via the ice building hardwired input or Tracer. This allows time for the external system load to “switchover” from an ice bank to the chilled water loop, and provides for a controlled pull down of the loop’s warmer temperature. This mode is not seen if the ice making is automatically terminated on return brine temperature per the mode below.

Start(ing is) Inhibited by BAS (Building Automation System)*

Chiller is stopped by Tracer or other BAS system per BAS communicated commands or (depending on configuration and settings) by lack of communication with the BAS system.

Start(ing is) Inhibited by External Source The chiller is inhibited from starting or running by the “external stop” hardwired input.

Diagnostic Shutdown - Auto Reset

The entire chiller is stopped by a diagnostic that may automatically clear. The chiller is stopped by a Chiller Level diagnostic that may be reset automatically depending on conditions and the specific diagnostic’s reset criteria.

Start(ing is) Inhibited by Low Ambient Temp (erature)

The chiller is inhibited based on the outdoor air temperature.

Power Up Delay Inhibit: min:sec On Power up, the chiller will wait for the Power Up Delay Timer to expire.

Maximum Capacity

Because the chiller is unable to run, when the chiller is in a Top Level Run Inhibit mode, the maximum capacity submode simply echoes that there is no additional capacity available at this time, unless the cause of the inhibit is removed.

Auto

The chiller is not currently running but can be expected to start at any moment given that the proper conditions and interlocks are satisfied.

Waiting For Evap(orator) Water Flow

The unit will wait up to 20 minutes in this mode for water flow to be established per the flow switch hardwired input.

Waiting For A Need To Cool

The chiller will wait indefinitely in this mode, for a leaving water temperature higher than the Chilled Water Setpoint plus some control dead-band.

Waiting to Start

The chiller is not currently running and there is a call for cooling but the lead circuit start is delayed by certain interlocks or proofs. Further information is provided by the sub-mode:

CCoonnttrroollss

Page 55

AC-SVX001A-EN

Table 19. Operating modes — chiller (continued)

Chiller Modes

Description

Cold Ambient Start Inhibit – Waiting for Warmer Water

During startups with Outdoor Ambient temperatures less than 18°F, it may be necessary to require warmer entering water to avoid a freeze danger at startup. The occurrence of this mode suggests that startup is being inhibited pending warmer water temperatures than otherwise would be required by the Differential to Start and Active Chilled Water Temperature settings.

Running At least one circuit on the chiller is currently running.

Chilled Water Control

Chiller is running to provide a chilled water temperature per the active chilled water setpoint (may be as arbitrated from various sources). (For cooling only units, this mode may be suppressed.)

Maximum Capacity The chiller is operating at its maximum capacity.

Capacity Control Softloading The control is limiting the chiller loading due to capacity based softloading setpoints.

Demand Limit Softloading

The chiller is running, and loading of individual compressors may be limited by a gradual filter of the chiller’s softloading Demand Limit setpoint. The starting Demandlimit and the settling time of this filter is user adjustable as part of the Demand control softload feature. The mode will be displayed as long as the Demand Control Softloading limit is ramping or “settling”.

Shutting Down

The chiller is still running but shutdown is imminent. The chiller is going through a compressor run-unload or extended operational pumpdown of the lag circuit/compressor (or all circuits simultaneously)

Evaporator Water Pump Off Delay: MIN:SEC

The Evaporator water pump is continuing to run past the shutdown of the compressors, executing the pump off delay timer.

Various

These submodes may be displayed in most of the top level chiller modes.

Manual Evap(orator) (Water) Pump Override The Evaporator water pump relay is on due to a manual command.

Diagnostic Evap (Water) Pump Override The Evaporator water pump relay is on due to a diagnostic.

Waiting for BAS Communications

The chiller has not detected communication with the BAS. This mode is only supported by LonTalk systems. Depending on configurations and Setpoint source setting, lack of communication may cause the chiller to shut down and or become inhibited from starting, but if so, the “Starting is Inhibited by BAS” mode will also occur.

Manual Compressor Control Signal Chiller capacity control is being controlled by AdaptiView or TU.

Noise Reduction

The Chiller’s Noise Reduction Mode has been activated. The condenser fans may be limited to a lower speed than design, to reduce fan noise.

Chilled Water Control

These modes are mutually exclusive and they indicate that the chiller is controlling to the active hot water setpoint, the active chilled water setpoint, or the active ice termination setpoint respectively.

Ice Building

Note: Mode strings may or may not include the characters in parentheses.

Table 20. Operating modes — circuit

Circuit Modes

Description

Stopped The circuit is not running, and cannot run without intervention.

Diagnostic Shutdown – Manual Reset The circuit has been shutdown on a latching diagnostic.

Front Panel Circuit Lockout

The circuit is manually locked out by the circuit lockout setting – the nonvolatile lockout setting is accessible through either the AdaptiView or TU.

External Circuit Lockout

The respective circuit is locked out by the external circuit lockout binary input.

Service Pumpdown The circuit is currently performing a service pumpdown.

CCoonnttrroollss

Page 56

AC-SVX001A-EN

Table 20. Operating modes — circuit (continued)

Circuit Modes

Description

Run Inhibit

The given circuit is currently being inhibited from starting (and running), but may be allowed to start if the inhibiting or diagnostic condition is cleared.

Diagnostic Shutdown – Auto Reset The circuit has been shutdown on a diagnostic that may clear automatically.

Low Oil Flow Cool Down Time mn:sec

See oil flow protection spec

Restart Inhibit min:sec

The compressor (and therefore, its circuit) is currently unable to start due to its restart inhibit timer. A given compressor is not allowed to start until 5 minutes (adj) has expired since its last start, once a number of “free starts” have been used up.

Low Evap Rfgt Temp (Inh-bit)*

A start of the circuit had been requested, but the circuit is inhibited from starting due to a high value of the Low Evaporator Refrigerant Temperature Integral from the last cycle. If the alternate circuit is available, it will be substituted. Delaying a start in this situation, avoids a latching diagnostic of the running Low Evaporator Refrigerant Temperature Cutout protection.

Auto

The circuit is not currently running but can be expected to start at any moment given that the proper conditions are satisfied.

Calibrating EXV

This submode is displayed when the EXV is performing a calibration. A calibration is only performed when the chiller is not running and never more frequently than once every 24 hours.

Waiting to Start The circuit is going through the necessary steps to allow the lead circuit to start.

Start Inhibited Waiting For Oil

The compressor (and thus its circuit) will wait up to 2 minutes in this mode for oil level to appear in the oil tank.

Running The compressor on the given circuit is currently running.

Establishing Min(imum) Cap(acity) – Low Diff (erential) Pressure

The circuit is experiencing low system differential pressure and its compressor is being force loaded, irrespective of the Chilled Water Temperature Control, to develop pressure sooner.

Establishing Min Cap – High Disch Temp

The circuit is running with high discharge temperatures and its compressor is being forced loaded to its step load point, without regard to the leaving water temperature control, to prevent tripping on high compressor discharge temperature.

Establishing Min Cap – Low Vi Min Speed

The compressor is being forced to a higher speed than desired for capacity control, in order to maintain compressor bearing reliability while in the low Vi state.

Maximum Capacity

The individual circuit is running at the maximum speed possible – no more capacity is available from this circuit.

Running - Limit

The circuit, and compressor are currently running, but the operation of the chiller/ compressor is being actively limited by the controls. Further information is provided by the sub-mode.* See the section below regarding criteria for annunciation of limit modes

(High) Condenser Pressure Limit

The circuit is experiencing condenser pressures at or near the condenser limit setting. Compressors on the circuit will be unloaded to prevent exceeding the limits.*

(Low) Evaporator (Rfgt) Temperature Limit

The circuit is experiencing saturated evaporator temperatures at or near the Low Refrigerant Temperature Cutout setting. Compressors on the circuit will be unloaded to prevent tripping. *

EXV Capacity Limit

The EXV is near or beyond 95% wide open, or is predicted to get to that position if the compressor was to run at full speed, and the capacity of the circuit (compressor speed) is being held or reduced in order to prevent loss of oil return or insufficient drive cooling.

Noise Reduction (Fan Limit)

The condenser fans of the circuit are potentially being limited by an active chiller-level Noise Reduction Request to a lower maximum possible speed in order to limit the noise levels.

Flooded or Hot Start Capacity Limit

This mode will occur at circuit start, if the evaporator is sensed to be full of liquid, or if the evaporator entering water temperature is greater than 65F while the outdoor air temperature is greater than 70F. This transient starting mode implies the compressor has begun operation at a speed below the configured “normal” minimum compressor speed, in order to avoid carryover.

Demand Limit

The compressor is running and is being capacity limited by a high demand power draw in excess of the compressor’s share of the active Demand Limit Setting for the entire chiller.

Shutting Down The circuit is preparing to de-energize the compressor.

CCoonnttrroollss

Page 57

AC-SVX001A-EN

Table 20. Operating modes — circuit (continued)

Circuit Modes

Description

Operational Pumpdown

The circuit is in the process shutting down by performing an operational pumpdown just prior to stopping the circuit’s compressor. The EXV is commanded closed. Pumpdown will terminate when the evaporator pressure reaches the termination pressure (below a specific criteria) or after a specific time has expired.

Note: Mode strings may or may not include the characters in parentheses.

Alarms

Alarms can be viewed and reset using the TD7 display. Alarms are communicated to the display immediately upon detection.

Viewing the Alarms Screen

Click the Alarms button in the main menu area to view the Alarm screen.

The Alarm screen will display a table of active alarms, listed chronologically, with the most recent first. See the following figure for an example of default view. The alarm list can be sorted by other columns.

Figure 30. Alarm screen

Reports

The TD7 provides the a variety of reports and allows the creation and editing of custom reports. All reports contain live data that refreshes every 2–5 seconds.

Viewing the Reports Screen

Click the Reports button in the main menu area to view the Reports screen. The Reports screen contains the following buttons to access the selected report:

• Custom Report1

• Custom Report2

• Custom Report3

• Evaporator

• Condenser

• Compressor

• Motor

• About

• Operating Modes

• Log Sheet

• ASHRAE Chiller Log

Figure 31. Report screen

Editing a Custom Report

A custom report can be edited by adding, removing, or re-ordering data. Click EEddiitt to access the Edit Custom Report screen.:

• AAdddd IItteemmss:: Select item to be added. Selected item will change to blue. Use arrows to scroll to additional items, and select all items to be added. Click AAdddd to move the selected item to the box on the right side of the screen.

• RReemmoovvee IItteemmss:: Select item to be removed. Selected item will change to blue.Use arrows to scroll to additional items, and select all items to be removed. Click RReemmoovvee to move the selected item to the box on the left side of the screen.

• RRee--oorrddeerr IItteemmss:: Select item to be moved. Selected item will change to blue. Use arrows to change the order of the item.

Touch SSaavvee to save and view the edited custom report.

CCoonnttrroollss

Page 58

AC-SVX001A-EN

Figure 32. Edit custom report screen

Figure 33. Report — evaporator screen

Table 21. Report — evaporator screen items

Description

Resolution Units

Active Chilled Water Setpoint

X.X

°F / °C

Evaporator Entering Water Temperature

X.X

°F / °C

Evaporator Leaving Water Temperature

X.X

°F / °C

Evaporator Water Flow Status

Flow, No Flow

Text

Evaporator Water Pump Override

Auto, On

Text

Evaporator Approach Temperature

X.X

°F / °C

EXV Position Percent X.X %

Evaporator Refrigerant Pressure XXX.X

PSIA/kPa

Evaporator Saturated Rfgt Temp

X.X

°F / °C

Evaporator Refrigerant Liquid Level

X.XX

in/mm

Figure 34. Report — condenser screen

Table 22. Report — condenser screen items

Description

Resolution Units

Condenser Entering Water Temperature

X.X

F / C

Condenser Leaving Water Temperature

X.X

F / C

Condenser Water Flow Status

Flow, No Flow

Text

Condenser Water Pump Override

Auto, On

Text

Condenser Approach Temperature

X.X

F / C

EXV Position Percent X.X %

Condenser Refrigerant Pressure XXX.X

PSIA/kPa

Condenser Saturated Rfgt Temp

X.X

F / C

Differential Refrigerant Pressure XXX.X

PSIA/kPa

Outdoor Air Temperature

X.X

F / C

Figure 35. Report — compressor screen

CCoonnttrroollss

Page 59

AC-SVX001A-EN

Table 23. Report — compressor screen items

Description

Resolution Units

Compressor Running Status

On,Off

Text

Average Motor Current % RLA XX.X% %RLA

Compressor Starts

XX Text

Compressor Running Time XX:XX Hr:Min

Oil Loss Level Sensor

Wet, Dry

Text

Discharge Temperature

X.X

°F / °C

Discharge Temperature

X.X

°F / °C

Compressor Oil Pressure

XXX.X

PSIA/kPaA

Evaporator Refrigerant Pressure XXX.X

PSIA/kPaA

Condenser Refrigerant Pressure XXX.X

PSIA/kPaA

Differential Refrigerant Pressure XXX.X

PSIA/kPaA

Frequency Command

XX.X Hz

Figure 36. Report — motor screen

Description

Resolution Units

Active Current Limit Setpoint

X.X %RLA

Average Motor Current % RLA X.X %RLA

Starter Motor Current L1 %RLA X.X %RLA

Starter Motor Current L2 %RLA X.X %RLA

Starter Motor Current L3 %RLA X.X %RLA

Starter Motor Current L1 X.X A

Description

Resolution Units

Starter Input Voltage AB

XXX.X V

Starter Input Voltage BC

XXX.X V

Starter Input Voltage CA

XXX.X V

Average Motor Current

X.X A

Average Phase Voltage

XXX.X V

Frequency Command

XX.X Hz

Equipment Settings

You can use the TD7 display to monitor and change a variety of equipment settings.

Accessing Equipment Settings

Equipment Settings are found on the left column of the Settings screen as shown in figure below. Included are the following:

• Chiller Settings

• Feature Settings

• Chilled Water Reset

• Manual Control Settings

Each selection will provide access to the detailed settings submenus.

Figure 37. Settings screen

Viewing and Changing Equipment Settings

Each button in the Equipment Settings column on the Settings screen takes you to a submenu which displays the name of a setting and its current value. See figure below. Click any button to select and change the value.

NNoottee:: A page number appears in the lower right corner

of the screen. If a screen contains more than one page, up/down arrows also appear for viewing the other pages, as in figure below.

CCoonnttrroollss

Page 60

AC-SVX001A-EN

Figure 38. Equipment settings screen — chiller settings

To change an equipment setting, click desired setting from Equipment Settings column on the Settings screen. Click the setting to be changed. The screen to input new data will be one of two types:

• BBuuttttoonn sseelleeccttiioonnss:: When clicked to select, the button becomes shaded, and a Save button appears at the bottom of the screen, as show below.

Figure 39. Chilled water reset screen

• NNuummeerriicc kkeeyyppaadd ssccrreeeenn:: For settings screen with numeric keypads (see example in figure below), enter the current value using the keypad. The new value will appear above the keypad. Keypad features:

– When a new number is entered, the value in the

New Value field is deleted and replaced with the new entry.

– The backspace (arrow) key deletes the

characters previously entered.

– If the keypad is used to enter a setpoint that is

out of range, an error dialog will appear when the SSaavvee button is selected.

– Keypads that allow negative numbers have

positive and negative number (+/-) keys.

Figure 40. Changed chilled water setpoint screen

Click SSaavvee to complete the change. The current value is updated in the upper left side of the screen, demonstrating that the change has been communicated to the Tracer® UC800 controller.

Table 24. Settings screen items

Description

Resolution Units

Chiller Settings

Active Chilled Water Setpoint

± XXX.X

°F / °C

Active Current Limit Setpoint

XXX % %RLA

Active Panel Base Load Cmd

On/Auto

Text

Active Base Loading Setpoint

XXX %

Active Base Loading Command

On/Auto

Text

Differential to Start XXX.X

°F / °C

Differential to Stop

XXX.X

°F / °C

Setpoint Source

(BAS/Ext/FP, Ext/Front Panel, Front Panel)

BAS/Ext/FP

Text

Evaporator Water Pump Off Delay

XX Min

Condenser Pump Prestart Time XX Min

High Evap Water Temp Cutout XXX.X

°F / °C

Evaporator Leaving Water Temp Cutout

XX.X

°F / °C

Low Refrigerant Temperature Cutout

XX.X

°F / °C

Current Limit Softload Start Point XXX.X %

Current Limit Control Softload Time XXXX Sec

CCoonnttrroollss

Page 61

AC-SVX001A-EN

Table 24. Settings screen items (continued)

Description

Resolution Units

Capacity Control Softload Time XXXX Sec

Local Atmospheric Pressure XXX.X

psi/kPa

Power Up Start Delay

XXX Min

Feature Settings

External Chilled/Hot Water Setpoint (Enable/ Disable)

Text

External Current Limit Setpoint (Enable/Disable)

Text

LCI-C Diagnostic Encoding (Enable/ Disable)

Text

Chilled Water Reset (Constant, Outdoor, Return, Disable)

Disable Text

Return Reset Ratio XXX %

Return Start Reset XXX.X

°F / °C

Return Maximum Reset XXX.X

°F / °C

Outdoor Reset Ratio XXX %

Outdoor Start Reset XXX.X

°F / °C

Outdoor Maximum Reset XXX.X

°F / °C

Mode Overrides

Evap Water Pump (Auto, On)

Auto Text

Cond Water Pump (Auto, On)

Auto Text

Display Settings

Display settings can be customized. The display also includes a function to clean the touch screen.

Viewing the Settings Screen

Display Settings are found on the right column of the Settings screen as shown in [Missing cross reference

text]. Included are the following:

• Display Preferences

• Language

• Date and Time

• Clean Display

Viewing and Changing Display Preferences

On the Settings screen, click DDiissppllaayy PPrreeffeerreenncceess which includes the following:

• Date Format

• Date Separator

• Time Format

• Unit System

• Pressure Units

• Number Format

Figure 41. Display preference screen

Each of the buttons shows the current value for each selection. Click any of these buttons to change. Select the option to be changed, which will be shaded.. Example in figure below shows a selection of MMDDYYY for the date format.

Figure 42. Date format preference selection

Click SSaavvee to confirm your selection and return to Display Preferences screen.

Following are the preference options available:

• DDaattee FFoorrmmaatt

– MMDDYYYY (default) – YYYYMMDD – DDMMYYYY

• DDaattee SSeeppaarraattoorr

– None – Slash (default) – Hyphen

• TTiimmee FFoorrmmaatt

– 12 hour (default) – 24 hour

• UUnniittss SSyysstteemm – SI

CCoonnttrroollss

Page 62

AC-SVX001A-EN

– I-P (default)

• PPrreessssuurree UUnniittss

– kPaA (default if “SI” is chosen for display units) – kPaG – PSIA (default if “I-P” is chosen for display units) – PSIG

NNuummbbeerr FFoorrmmaatt

– 1000000.0 – 1000000,0

Viewing and Changing Language

On the Settings screen, click LLaanngguuaaggee. The current setting will be shaded, as shown in figure below. To change the language, click the preferred language to select. Click SSaavvee to confirm selection.

Figure 43. Language settings

Viewing and Changing Date and Time

On the Settings screen, click DDaattee aanndd TTiimmee. The current date and time appear at the bottom of the screen. The following options are available to change on the main screen:

• Month

• Day

• Year

• Hour

• Minute

• AM/PM

To change any settings, click the corresponding button to highligh, then use up/down arrow keys to set desired value. Repeat for any other items to be changed. When complete, click SSaavvee to confirm selection and return to Settings screen.

NNoottee:: To edit field using keypad entry, click the

highlighted button a second time to access the keypad.

Figure 44. Date and time settings screen

Cleaning the Display

On the Settings screen, click CClleeaann DDiissppllaayy. The TD7 is disabled for 5 seconds to allow screen cleaning without response to touch. During this time, the screen is black with a number in the center that counts down the seconds. After 5 seconds, the display will return to the Settings screen.

Figure 45. Cleaning the display — countdown screen

Security Settings

Security settings are available to prevent unauthorized changes to the system. To access security, click SSeeccuurriittyy button on the Settings screen.

Logging In

All data can be viewed without logging in. However, if security if enabled, the Tracer® AdaptiView™ requires a four-digit security PIN log-in to make changes to any settings protected by security. This feature prevents unauthorized personnel from making changes to the system.Two levels of security are provided.

• SSeeccuurriittyy LLeevveell 11:: Allows users to change a limited group of secure settings. The default security PIN is

1111.

• SSeeccuurriittyy LLeevveell 22: Allows users to change all secure settings. The default security PIN is 7123.

CCoonnttrroollss

Page 63

AC-SVX001A-EN

Tracer® TU service tool is used to set an alternate PIN, or to recall a forgotten pin. When defining a PIN in Tracer® TU, enter a 4-digit PIN to correspond with the desired level of security.

To log in, click LLoogg IInn button, and use the keypad to enter your pin. See figure below.

• PIN is a four-digit number, which was configured for your system with the Tracer® TU service tool.

• For security, the PIN is hidden by asterisks during entry.

NNoottee:: If an invalid PIN is entered, an error message will

appear.

Click SSaavvee. User will be returned to previous screen.

NNoottee:: User will be logged out after 30 minutes of

inactivity. To manually log out, see section later

Figure 46. Log in screen

Disabling/Enabling Security

The security feature that allows a user to log in or out can be disabled or enabled.

To ddiissaabbllee security, user must be logged in:

• On Settings screen, click SSeeccuurriittyy button.

NNoottee:: Log in prompt will appear if user is not

already logged in.

• Click DDiissaabbllee button, then click SSaavvee.

Figure 47. Security screen — disable

To eennaabbllee security:

• On Settings screen, click SSeeccuurriittyy button. The Settings screen will now appear with onlyo the Security button. It will not have a Log In/Log Out buttons

• Click EEnnaabbllee button, then click SSaavvee. The Settings screen will now appear with Log In/Log Out button, in addition to the Security button.

Logging Out

To log out, click LLoogg OOuutt button. A confirmation screen appears as shown below. Click YYeess to confirm.

Figure 48. Log out confirmation screen

InvisiSound Ultimate — Noise Reduction Mode

When the InvisiSound™ Ultimate option is selected (model number digit 12=3), noise reduction mode can be enabled to adjust fan speed and lower maximum sound levels. Reduced acoustic noise levels can be set for certain times, or on a schedule. The noise reduction feature can be requested by local time of day scheduling, external input or building automation system.

To enable this function at the external display, access the Settings screen on the Tracer® AdaptiView™. See figure below.

Figure 49. Noise reduction mode settings

CCoonnttrroollss

Page 64

AC-SVX001A-EN

• Set the Front Panel Noise Reduction Request to ON.

• Adjust the Noise Reduction Condenser Fan Speed Clamp to desired value.

– Setting for fan speed: Percentage of 920 rpm

maximum fan speed (Example: For fan speed of 700 rpm, enter a value of 76%)

– Acceptable inputs are 60% (552 rpm) to 100%

(920 rpm) in 1% increments

Tracer TU

The AdaptiView™TD7 operator interface allows for daily operational tasks and setpoint changes. However, to adequately service chillers, Tracer® TU service tool is required. (Non-Trane personnel, contact your local Trane office for software purchase information.) Tracer® TU adds a level of sophistication that improves service technician effectiveness and minimizes chiller downtime. This portable PC-based service-tool software supports service and maintenance tasks, and is required for software upgrades, configuration changes and major service tasks.

Tracer® TU serves as a common interface to all Trane® chillers, and will customize itself based on the properties of the chiller with which it is communicating. Thus, the service technician learns only one service interface.

The panel bus is easy to troubleshoot using LED sensor verification. Only the defective device is replaced. Tracer® TU can communicate with individual devices or groups of devices.

All chiller status, machine configuration settings, customizable limits, and up to 100 active or historic diagnostics are displayed through the service-tool software interface.

LEDs and their respective Tracer® TU indicators visually confirm the availability of each connected sensor, relay, and actuator.

Tracer® TU is designed to run on a customer’s laptop, connected to the Tracer® AdaptiView™ control panel with a USB cable. Your laptop must meet the following hardware and software requirements:

• 1 GB RAM (minimum)

• 1024 x 768 screen resolution

• CD-ROM drive

• Ethernet 10/100 LAN card

• An available USB 2.0 port

• Windows 7 Enterprise or Professional operating system (32-bit or 64-bit)

NNoottee:: Tracer

TU versions 8.6 and earlier will also

support Microsoft

Windows®XP Professional operation system with Service Pack 3 (SP3) .

• Microsoft .NET Framework 4.0 or later

NNootteess::

• Tracer

TU is designed and validated for this minimum laptop configuration. Any variation from this configuration may have different results. Therefore, support for Tracer TU is limited to only those laptops with the configuration previously specified.

• For more information, see TTU-SVN01*-EN Tracer

TU Getting Started Guide

Figure 50. Tracer TU

CCoonnttrroollss

Page 65

AC-SVX001A-EN

Pre-Start

Upon completion of installation, complete the Installation Completion Check Sheet and Request for Trane Service checklist in Log and Check Sheet chapter.

IImmppoorrttaanntt:: Start-up must be performed by Trane or an

agent of Trane specifically authorized to perform start-up and warranty of Trane products. Contractor shall provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the scheduled start-up.

Page 66

AC-SVX001A-EN

Start-up and Shutdown

IImmppoorrttaanntt:: Initial unit commissioning start-up must be

performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty of Trane products. Contractor shall provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the scheduled start-up.

Unit Start-up

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee.. EEnnssuurree tthhaatt tthhee ccoommpprreessssoorr aanndd ooiill ssuummpp hheeaatteerrss hhaavvee bbeeeenn ooppeerraattiinngg pprrooppeerrllyy ffoorr aa mmiinniimmuumm ooff 2244 hhoouurrss bbeeffoorree ssttaarrttiinngg..

If required, once the system has been operating for approximately 30 minutes and has become stabilized, complete the remaining start-up procedures, as follows:

1. Check the evaporator refrigerant pressure and the condenser refrigerant pressure under Refrigerant Report on the AdaptiView™ TD7. The pressures are referenced to sea level (14.6960 psia).

2. Check the EXV sight glasses after sufficient time has elapsed to stabilize the chiller. The refrigerant flow past the sight glasses should be clear. Bubbles in the refrigerant indicate either low refrigerant charge or excessive pressure drop in the liquid line or a stuck open expansion valve. A restriction in the line can sometimes be identified by a noticeable temperature differential between the two sides of the restriction. Frost will often form on the line at this point. Proper refrigerant charges are shown in the General Information Section.

IImmppoorrttaanntt:: A clear sight glass alone does not mean

that the system is properly charged. Also check system subcooling, liquid level control and unit operating pressures.

If chiller is limited by any limiting conditions, contact local Trane service organization for more information.

Temporary Shutdown And Restart

To shut the unit down for a short time, use the following procedure:

1. Press the STOP key on the Adaptiview TD7. The compressors will continue to operate and an operational pumpdown cycle will be initiated.

2. UC800 pump control will turn off the pump (after a minimum 1 min. delay) when the STOP key is pressed and automatically restart the pump when the unit starts normally.

3. The unit will start normally, provided the following conditions exist:

a. The UC800 receives a call for cooling and the

differential-to-start is above the setpoint.

b. All system operating interlocks and safety

circuits are satisfied.

Extended Shutdown Procedure

The following procedure is to be followed if the system is to be taken out of service for an extended period of time, e.g. seasonal shutdown:

1. Test the unit for refrigerant leaks and repair as necessary.

2. Open the electrical disconnect for the chilled water pump. Lock the switches in the "OPEN" position.

NNOOTTIICCEE

PPuummpp DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn ppuummpp ddaammaaggee.. LLoocckk tthhee cchhiilllleedd wwaatteerr ppuummpp ddiissccoonnnneeccttss ooppeenn aanndd vveerriiffyy ppuummpp iiss ooffff bbeeffoorree ddrraaiinniinngg wwaatteerr..

3. Close all chilled water supply valves. Drain the water from the evaporator.

4. With the water drained from evaporator, disconnect 115 power from evaporator heaters at terminals 1X4-1 and 1X4-2.

NNOOTTIICCEE

HHeeaatteerr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn hheeaatteerr ddaammaaggee.. DDoo nnoott aappppllyy ppoowweerr ttoo tthhee eevvaappoorraattoorr hheeaatteerrss wwhheenn nnoo wwaatteerr iiss pprreesseenntt..

5. Open the main electrical disconnect and lock in the "OPEN" position.

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee.. LLoocckk tthhee ddiissccoonnnneecctt iinn tthhee ""OOPPEENN"" ppoossiittiioonn ttoo pprreevveenntt aacccciiddeennttaall ssttaarrtt--uupp aanndd ddaammaaggee ttoo tthhee ssyysstteemm wwhheenn iitt hhaass bbeeeenn sshhuutt ddoowwnn ffoorr eexxtteennddeedd ppeerriiooddss..

Page 67

AC-SVX001A-EN

6. At least every three months (quarterly), check the refrigerant pressure in the unit to verify that the refrigerant charge is intact.

Seasonal Unit Start-up Procedure

1. PRIOR to water being pumped into system, use gauges to verify positive pressure in the evaporator and condenser. Lack of pressure could indicate a system leak. When charging in the factory, approximately 95% of the refrigerant charge is isolated in the evaporator, and the other 5% is contained in the condenser and compressor. In the event that no pressure is present, contact local Trane service.

2. Close all drain valves and re-install the drain plugs in the evaporator.

3. Service the auxiliary equipment according to the start-up/maintenance instructions provided by the respective equipment manufacturers.

4. Close the vents in the evaporator chilled water circuits.

5. Open all the valves in the evaporator chilled water circuits.

6. Open all refrigerant valves to verify they are in the open condition.

7. If the evaporator was previously drained, vent and fill the evaporator and chilled water circuit. When all air is removed from the system (including each pass), install the vent plugs in the evaporator water boxes.

8. Check the adjustment and operation of each safety and operating control.

9. Refer to the sequence for daily unit startup for the remainder of the seasonal startup.

System Restart After Extended Shutdown

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

Follow the procedures below to restart the unit after extended shutdown:

1. Check refrigerant pressure as noted in Seasonal Unit Start-Up procedure.

2. Verify that the liquid line service valves, oil line, compressor discharge service valves and suction service valves are open (backseated).

NNOOTTIICCEE

CCoommpprreessssoorr DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd ccaauussee ccaattaassttrroopphhiicc ddaammaaggee ttoo tthhee ccoommpprreessssoorr.. DDoo nnoott lleeaavvee ooiill lliinnee sshhuutt ooffff vvaallvvee oorr tthhee iissoollaattiioonn vvaallvveess cclloosseedd oonn uunniitt ssttaarrtt--uupp..

3. Check the oil sump level. See instructions in Maintenance chapter.

4. Fill the evaporator water circuit. Vent the system while it is being filled. Open the vent on the top of the evaporator and condenser while filling and close when filling is completed.

NNOOTTIICCEE

PPrrooppeerr WWaatteerr TTrreeaattmmeenntt RReeqquuiirreedd!!

5. Close the fused-disconnect switches that provides power to the chilled water pump.

6. Start the evaporator water pump and, while water is circulating, inspect all piping for leakage. Make any necessary repairs before starting the unit.

7. While the water is circulating, adjust the water flows and check the water pressure drops through the evaporator. See Evaporator Waterside Pressure Drop Curves in Installation Mechanical chapter, and water flow rates in General Data tables..

8. Verify proper operation of flow switch on the evaporator waterbox.

9. Stop the water pump. The unit is now ready for start-up as described previously

Sequence of Operation

This section provides basic information on chiller operation for common events. Adaptive control algorithms are used on these chillers. This section illustrates common control sequences.

Software Operation Overview

The following figure is a diagram of the five possible software states. This diagram can be thought of as a state chart, with the arrows and arrow text, depicting the transitions between states:

• The text in the circles is the internal software designations for each state.

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 68

AC-SVX001A-EN

• The shading of each software state circle corresponds to the shading on the time lines that show the chiller’s state.

There are five generic states that the software can be in:

• Power Up

• Stopped

• Starting

• Running

• Stopping

Shutting Down

Running

Running Limit

Stopped

Run Inhibit

Au to

Co mm an d

Co nfirme d S tart

Stop C om m

gn os

Co nfirme d

Sh utd ow n

Boot and Self Test

Stop C om ma nd or Diagnos tic

Auto

Waiting to Start

Check for

Differential

to Start

Check for

Differential

to Stop

Re lea se

of Inhibit

Po wer Up

In the following diagrams:

• The time line indicates the upper level operating mode, as it would be viewed in the Tracer® AdaptiView™.

• The shading color of the cylinder indicates the software state.

• Text in parentheses indicates sub-mode text as viewed in the Tracer® AdaptiView™.

• Text above the time line cylinder is used to illustrate inputs to the UC800. This may include user input to the Tracer® AdaptiView™ touch screen, control inputs from sensors, or control inputs from a generic BAS.

• Boxes indicate control actions such as turning on relays, or pulsing compressor load or unload solenoids.

• Smaller cylinders under the main cylinder indicate diagnostic checks.

• Text outside a box or cylinder indicates time-based functions.

• Solid double arrows indicate fixed timers.

• Dashed double arrows indicate variable timers.

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 69

AC-SVX001A-EN

Power Up Diagram

The following diagram shows the respective TD7 AdaptiView™ screens during a power up of the UC800 and display. This process takes 25 seconds for the UC800 and 90 seconds for the display. On all power

ups, the software model always will transition through the 'Stopped' Software state independent of the last mode. If the last mode before power down was 'Auto', the transition from 'Stopped' to 'Starting' occurs, but it is not apparent to the user.

Figure 51. Sequence of operation: power up diagram

R T A E S e q u e n c e o f O pera tio n : O p e rator D ispla y P o w er U p

*D is pl ay will s ho w

eith er A ut o o r S to p

but to n a s “a ct iv e”

(d ep ress ed ) o nc e

it is r ea dy

E xt er na l

P ow er

A pp lie d

U C80 0 F ully O pe ra tio na l

B oo tin g U C 80 0

(2 5 S ec on ds )

O perat or Disp lay a nd UC 80 0

S ta rt B oo tin g

Las t M od e

A ut o*

Las t M od e

S to p*

IP C B us C om m Beg ins

R em ain in

“Stop ” inde fin ite ly

unt il “A ut o”

com m an d- S ee

“Stop pe d To Starting”

(3 9 S ec on ds )

MinimumTime Until 1st C ompressor Could Restart

(if “Power Up Delay Inhibit” set to 0;Default is 105 sec)

C on tin ue Along St ar t

S eq ue nc e

S ee “P ow er U p

to Sta rting”

10 Sec

First Trane Logo

Grey Screen

Second Trane Logo - Loading

User Interface Tem plate...

Black Screen

Loading Data….

Display Ready

18 Seconds 27 Seconds

15 Seconds

Ope rator Displa y Boot Up and Load - 90 sec Total to Display Ready

15 Sec

5 Sec

soees

6/4

ppp

666

/6/

eeesc

ttt

/2/

sss

eoesc

sec

odo

oyd

990

eec

444

2/1

/20

666

6666666 1122/

2200011221122

2222222 999

9999999 220001122

S to ppe d

LL/a

ooo

aaa

aad

ees

201

ure

1[A

apt

woB

ootScre

]

/66666666 1122/

/22222222 220001122--1122

/1111

/22

0001122

U C80 0 B oot U p

/2/

ees

Black Screen

66666 14/

44444 2

001212/

00/

00000 2

001

S ta rting S eq ue nc e

S ee “P ow er U p to

S ta rting” Seq ue nce D iagram

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 70

AC-SVX001A-EN

Power Up to Starting

The following diagram shows the timing from a power up event to energizing the first compressor. The shortest allowable time would be under the following conditions:

• No motor restart inhibit time left from subsequent starts

• Evaporator Water flow occurs quickly with pump on command

• Power up Start Delay set to 0 minutes

• Need to cool (differential to start) already exists

• Oil level is detected immediately

The above conditions would allow for a minimum power up to starting the first compressor time of about 45 seconds (variations may exist due to options installed). Note that it is not advisable to start a chiller “cold”, the oil heaters should be in operation for a sufficient length of time prior to first start.

Figure 52. Sequence of events: power up to starting

2/20121

2/1

1/201

Confirm Presence

of Oil With in

90 Seconds

5555

5/220

111112222

Pow er

Applied

666//

111

2222///

222

000

111

222--

777

///

333

////

222222

Power

/13

/20

UC800

Boot T im e

(25 Sec)

Auto Mode commanded by Front Panel or B AS

EXVs self-

close on

po wer u p

Confirm Evapo rator W ater F low (6 Second Filte r)

Enfo rce Restart Inhibit Timer (0 to 1 m in ute)

Power U p Delay In hibit Tim er

(User Adjustab le 0 to 30 m in utes)

77//22//22001122-

99//33//2200112

Auto

Energize Evaporator

Water Pum p Rela y

2/20121

2/1

1/201

Confirm Evapo rator W ater

Flow W ithin 20 minutes

(6 Second Filte r)

Oil Heaters Always E nergized when Com pressor

is De-ene rgized

114

4/202

/3/20

asd

EXV remain s closed

Wait for N ee d

To C ool

(Diff to Start)

99//////22//22001122-

1100//22//2200112

Auto

9/3/0

(

asd

Call for Coo ling (Differential to Start is m et)

1100000//11//22001122-

1100//3311//22001111

Waiting

To Start

0//

asd

Confirm

Presen ce of Oil

(0 to 90 seco nds)

1100//3300//22001122-

1122//1111//2200112

Waiting To Start

0/3/0

asd

2/1

1/201

asd

EXV moving to

Prep osition

0 to 25 Seconds

Send Start C ommand

to Lead Com pres so r*

Transition to Running

Start C ontrol o f

Condenser Fan F low

Pre-Position EXV of

Le ad C ircuit

66666

/////

111133333

/////

222200000

11112222--11112222/////

111100000

/////

222200000

1111222

Check E vap P re ss ure for

Lo w Pres su re Cutout

P0r12

* Lead compressor (and its lead circuit) is determined by staging algorithm - “Fixed Staging” or “Balanced Wear” selection - also influenced by lockouts, restart inhibit, or diagnostics present.

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 71

AC-SVX001A-EN

Stopped to Starting

The following diagram shows the timing from a stopped mode to energizing the first compressor. The shortest allowable time would be under the following conditions:

• No motor restart inhibit time left from subsequent starts

• Evaporator Water flow occurs quickly with pump on command

• Need to cool (differential to start) already exists

• The above conditions would allow a compressor to start in about 20 seconds.

Figure 53. Sequence of events: stopped to starting

6//0//0

Confirm Presence

of Oil With in

90 Seconds

/55

2220

111111

222222

Stopped

Or Run

Inhibit

666/1222//2

00127

//33//2

Stop

6/3/0

Auto Mode commanded by Front Panel or B AS

Confirm Evapo rator W ater F low (6 Second Filte r)

Enfo rce Restart Inhibit Timer

(0 to 1 m in ute)

7///2

2///2

20001122 -

999///333///2

20001122

Auto

Energize Evaporator

Water Pum p Rela y

6//0//0

Confirm Evapo rator W ater

Flow W ithin 20 minutes

(6 Second Filte r)

Oil Heaters

Always E nergized when

Com presso r is De-energized

6//

/3/20

asd

EXV remain s closed

Wait for N ee d

To C ool

(Diff to Start)

999///////2

///2

00012-1000///2

///2

0001

Auto

9/3/0

((

asd

Call for Coo ling (Differential to Start is m et)

00000//1

//2

0012--

- 1

00//331

//2

001111

Waiting

To Start

0//

asd

Confirm

Presen ce of Oil

(0 to 90 seco nds)

00//3300//2

0012--

- 12//11//2

001

Waiting

To Start

0/3/0

asd

2/1

1/201

asd

EXV moving to

Prep osition

0 to 25 Seconds

Send Start C ommand

to Lead Com pres so r*

Transition to Running

Start C ontrol o f

Condenser Fan F low

Pre-Position EXV of

Le ad C ircuit

6666////111

3333////222

0000111

222--

111

222

////111

0000////222

0000111

222

Check E vap P re ss ure for

Lo w Pres su re Cutout

///

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 72

AC-SVX001A-EN

Running (Lead Compressor/Circuit Start and Run)

The following diagram shows a typical start and run sequence for the lead compressor and its circuit.

Figure 54. Sequence of operation: running (lead compressor/circuit start and run)

*N ote: The decision to stage on or off another compressor is determined by

the Average Running Com pressor L oad Command, W ater Tem perature Error, and Tim e Since Last Stage

H old E XV P re- po siti on

(1 0 S ec on ds )

Lea d

C om p re ss or

R un ni ng

C hi lle r a nd L ea d C ircu it M od e is “R un nin g” - L ag C irc ui t M ode is “A uto”

H old E XV of L ead

C irc uit a t p re-

po si tio n f or 1 0 s ec

D e-e ne rgi ze O il H ea ter s

O f L ead C irc ui t

C on tro l Lea d C irc uit C on den se r F an s f or

O pti mu m D iff ere nt ial

P res su re,

ƒ( Cp rsr S pd , O A T em p)

2/20121

2/1

1/201

E nf or ce A ll R unn ing Mod e D ia gn os tic s f or C hi lle r, L ea d C ompres so r a nd its C irc ui t

M od ula te E XV fo r

Li qu id L ev el &

P res su re C on tro l

M od ula te

C om pr ess or

S pee d fo r

Li mi t C on tro l

M od ula te C om p res so r

S pee d fo r

C apacity C on trol

M od ula te C om p res so r

S pee d fo r

C apacity C on trol

66//1122//22001122-

77//2244//2200112

R unn ing

/13

/20

277

//2222233//22001122-

88//1144//2200

R unn ing

7/2

4/201

88/

99/

R unn ing

Lea d C ircu it:

R un ni ng Lim it

/15

/20

111

3////

11112222

sto

nneeDeeee

eeesscc

riip

tttii

oon

99//1100//22001122-

1100//2299//2200112

R unn ing

9//

1/201

E xit Lim it M o de

E nt er Lim it M o de

S tage O n S etpo int M et *

00/

88/

121

R unn ing

Lag C ircu it:

W ait ing to S tar t

000

/29

/20

P rep are t o S tart

La g C om pr es so r,

C heck f or O il,

C heck f or L PC

E XV m o vin g t o p re po sit ion

0 t o 2 5 S ec on ds

S tar t C on tro l o f

C on den se r F an F low

on L ag C irc uit

S end S tart C om m an d

to L ag C om p res so r

C on tin ue

R un ni ng

P re- Po siti on E X V o f

La g C irc uit

2/1

1/201

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 73

AC-SVX001A-EN

Running (Lag Compressor/Circuit Start and Run)

The following diagram shows a typical start and run sequence for the lag compressor and its circuit.

Figure 55. Sequence of operation: running (lag compressor/circuit start and run)

*N ote: The decision to stage on or off another compressor is determined by

the Average Running Com pressor L oad Command, W ater Tem perature Error, and Tim e Since Last Stage

H old E XV P re- po siti on

(1 0 S ec on ds )

B ot h

C om p re ss ors

R un ni ng

C hi lle r a nd B ot h C ircu it M od es are “R unn ing ”

H old E XV of L ag

C irc uit a t p re-

po si tio n f or 1 0 s ec

D e-e ne rgi ze

O il H ea ter s

O f L ag C irc ui t

C on tro l B oth C irc uit

C on den se r F an s f or

O pti mu m D iff ere nt ial

P res su re,

ƒ( Cp rsr S pd , O A T em p)

2/20121

2/1

1/201

E nf or ce A ll R unn ing Mod e D ia gn os tic s f or C hi lle r, L ea d C ompres so r a nd its C irc ui t

M od ula te E XV fo r

Li qu id L ev el &

P res su re C on tro l

M od ula te

C om pr ess or

S pee d fo r

Li mi t C on tro l

M od ula te C om p res so r

S pee d fo r

C apacity C on trol

M od ula te C om p res so r

S pee d fo r

C apacity C on trol

666///111222///222000111222 -

777///222444///222000111222

R unn ing

/13

/20

277

7///

22222

22333///222000111222 -

888///111444///222

R unn ing

7/2

4/201

1133///220

111222

sto

eeeDee

eeesscc

riip

tttii

oon

E xit Lim it M o de

E nt er Lim it M o de

111000///222888///222000111222 -

111222///111111///222000111222

R unn ing

E ner giz e M ax im um

C apacity R el ay a fte r t he

A dju sta bl e F ilte r T im e

(0 to 6 00 S ec on ds )

C on tin ue

R un ni ng

(B ot h

C om p rs rs

& M ax

C ap ac ity

M ax imu m C ap ac ity

S ubmo de

///111111///222000111222 -

111000///333000///222000111222

R unn ing

8//

33/

99/

R unn ing

Lag C ircu it:

R un ni ng Lim it

1/201

/13

/20

0//30

/20

B ot h C om p re ss ors R un ni ng A t o r N ea r M ax S pe ed (U na ble t o A ch ieve C W SP )

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 74

AC-SVX001A-EN

Satisfied Setpoint

The following diagram shows the normal transition from Running to shutting down due to the Evap

Leaving water temp falling below the differential to stop setpoint.

Figure 56. Sequence of events: satisfied setpoint

* Note: Operational P umpdown is required if the O utdoor Air Temp erature is less than 50F.

Note: Operational P umpdown is Term inated N orm ally when the Evaporator Refrigerant Pressure is at or below 20 PSIA. The M aximum Allowed Tim e for O perational Pum pdow n is 2 Minutes.

/10

/20

121

/13

/20

S hut ting D own

La st C ir cui t M od e: S hu tti ng D ow n

S ubMo de : O pe rat ion al P um p do wn

66////0088//00//0

R unn ing

Las t C irc uit M ode :

R un ni ng

00//33//00////0

A uto

B ot h C irc ui t M ode s:

W ait ing fo r N ee d t o C oo l

1/201

/13

/20

R un ni ng

Las t

C om p re ss or

A t M in S pe ed

4/201

D iff ere nt ial to S to p i s M et

O pe rat ion al P um pd ow n

(0 S eco nd s to 2 M inu te s)

Fu lly C los e E XV

P erf orm O pe ra tio na l

P um pd ow n f or L as t C irc uit i f R eq uir ed

S end S to p C om m an d

To C om p res so r

IF *

No P um p do wn R eq uir ed

Pu m pd ow n

Re qu ire d

Tu rn O ff L as t C irc uit ’s

C on den se r F an s

N or ma l P um pdo wn Te rm ina tio n

C rit eri a is M et f or L as t C irc uit

6666////11112222////2222000011112222----11112222////11111111////222200001111222

E nfo rce A ll N on R un nin g

M od e D iagn os tics

555

////22

11122

2/1

1/201

A ut o

C los e E XV

(0 to 2 5 S ec on ds )

2/20121

2/1

1/201

C heck f or

N orm al P um pd ow n

Te rm in ati on C rit eri a M et

55//222

112

21122

//1111//2

000

112

11n22

111111

///22

000

E ner giz e L ast C irc uit

O il H ea ter s

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 75

AC-SVX001A-EN

Normal Shutdown to Stopped or Run Inhibit

The following diagram shows the Transition from Running through a Normal (friendly) Shutdown. The

dashed lines on the top attempt to show the final mode if stop is selected via various inputs.

Figure 57. Sequence of events: normal shutdown to stopped or run inhibit

* Note: Operational P umpdown is required if the O utdoor Air Temp erature is less than 50F. **

Note: Operational P umpdown is Term inated N orm ally when the Evaporator Refrigerant Pressure is at or below 20 PSIA. The M aximum Allowed Tim e for O perational Pum pdow n is 2 Minutes.

2/201

/15

/20

S hut ting D own

R un nin g C ir cui t M od es : S hu ttin g D ow n

S ubMo de : O pe rat ion al P um p do wn

/15

/20

121

2/1

1/201

/13

/20

O pe rat ion al P um pd ow n

(0 S eco nd s to 2 M inu te s)

Fu lly C los e E XV

P erf orm O pe ra tio na l

P um pd ow n f or A ll

R un nin g C ir cui ts if

R equir ed

IF *

C los e E XV

(0 to 2 5 S ec on ds )

2/20121

2/1

1/201

C heck f or

N orm al P um pd ow n

Te rm in ati on C rit eri a M et

222

112

No P um p do wn R eq uir ed

Pu m pd ow n

Re qu ire d

E vap or ato r P um p O ff D el ay (A dj ust ab le 1 t o 3 0 M in ut es)

S end S to p C om m an d t o

A ll

R un nin g C om p res so rs

E ner giz e A ll H ea ters

Fu lly C los e B oth E XV s

Tu rn O ff A ll R un ni ng

C irc uits C on de ns er F an s

D e-E ne rg ize E va po ra tor

W ate r P um p R el ay

S to pp ed

R un Inhibit

O ne o r

M ore

C irc ui ts

R un ni ng

N or ma l P um pdo wn Te rm ina tio n** C rit eri a is M et f or A ll C ircu its

Loca l S to p C hiller Le ve l D iag no stic – N orm al S hu tdow n L atch ed C hiller Le ve l D iag no stic – N orm al S hu tdow n N on latc hed B uild ing A utomat io n Sy stem S top E xtern al A ut o-S to p

81520

01/

S hut ting D own

C irc ui t M ode s:

A ut o

/16

/20

121

2/1

1/201

S to pp ed o r R un In hibit

C irc ui t M ode s:

S to pp ed o r A uto

7/20122

*Note: Operational Pumpdown is required if the

Outdoor Air Temperature is less than 50°F. ** Note: Operational Pumpdown is terminated

normally when the Evaporator Refrigerant Pressure is at or below 20 psia.

The Maximum Allowed time for Operational Pumpdown is 2 minutes.

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 76

AC-SVX001A-EN

Immediate Shutdown to Stopped or Run Inhibit

The following diagram shows the Transition from Running through an Immediate Shutdown. The dashed

lines on the top attempt to show the final mode if stop is selected via various inputs.

Figure 58. Sequence of events: immediate shutdown to stopped or run inhibit

C hiller Le ve l D iag no stic – Im m ed ia te S hu tdown N on -L atch ing C hiller Le ve l D iag no stic – Im m ed ia te S hu tdown L atching Fro nt P an el Im m ed ia te Shu td own

R un Inh ibit

S to pp ed

C om pr ess or D eceler ati on T im e

D e-E ne rgize E vap or ato r

W ate r P um p R el ay

///22

999///22

00011221122///1111///22

00011

S to pp ed

66//12//2

001299//2

99//2

001

S hut ting D own

//0

asddd

6/3/0

asd

9/9/0

asd

O ne o r M or e

R unn ing

C om pre ss or s

S end S to p C om m an d t o

A ll R un nin g C om pres so rs

E ner giz e A ll H ea ters

Fu lly C los e B oth E XV s

Tu rn O ff A ll

R un nin g C ir cui ts

C on den se r F an s

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 77

AC-SVX001A-EN

Ice Making (Running to Ice Making to Running)

The following diagram shows the transition from normal cooling to Ice making, back to normal cooling.

Figure 59. Sequence of events: ice making (running to ice making to running)

R un ni ng

Ic e M aking C om m an d:

1. T ra ce r

2. E xternal

3. F ro nt Pa ne l

R un ni ng

(U ni t is B ui ld in g I ce )

Ic e M aking C om m an d W ith draw n ( prio r t o ic e c om plete )

R un ni ng

S tag e a nd m od ula te a ll co m pre ss or s in se qu en ce t o f ull l oa d (if n ot a lre ady )

S tar t C om pr ess or s a nd C irc uits p er n or ma l st ag ing – S ee o the r se qu en ce d ia gra m s

R un Inhibit

(Ice t o N orm al T ra ns ition )

Ic e T o N orm a l T ran sit ion T im er

(f ixe d 2 m ins)

R un U nl oa d, C lo se E X Vs a nd P erf orm O pe ra tio na l Pum pd ow n (i f re gd ) th en S hu tof f C om pr ess or s, E ner giz e H ea ter s

Ig no re S of tloa di ng a nd S et C LS = 1 00%

E ner giz e Ic e B uild ing R ela y

E nfo rce A ll L im its a nd R un nin g M o de D ia gnos tics

H ead R elie f R eq ue st

R ela y D el ay (1 t o 6 0

m ins a dj )

E vap Lea vin g W ater Te mp R ises A bov e th e D iffe re n tial T o S tart

M ax imu m 1 :1 0 t o full y

lo ad ed

D e-e ne rgi ze H ea ter s, a nd C on tro l E XV s p er n or ma l st ag ing - S ee ot he r se qu en ce d ia gra m s

R un ni ng

A ut o

E nfo rce A ll L im its a nd R un nin g M o de D ia gn ost ics

C on tro l C irc uit ’s C on den se r F an s f or D iff P res su re

Tu rn of f b oth C irc uit s’ C on den se r F an s

C on firm N o

C om pr ess or C u rre nts

C los e E XV s o r le av e c los ed fo r C irc uit s’ Off C ycl e

P re- posit ion E XV , P res ta rt C on den se r F an s

D e-E ne rgize H ead R elie f R eq ue st a nd Ic e B uildin g R ela y

E ner giz e H ea d R elief R eque st R el ay

C on tinue t o R un E va p W ate r P um p T hr ou gh ou t

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 78

AC-SVX001A-EN

Ice Making (Auto to Ice Making to Ice Making Complete)

The following diagram shows the transition from Auto to Ice making, to Ice Making Complete.

Figure 60. Sequence of events: ice making (auto to ice making to ice making complete)

C on firm N o

C om pr ess or C u rre nts

A ut o

E vap Ent erin g W at er Tem p Fa lls Below the Ic e T er m in ation S etpo in t

R un Inh ibit –

S ubm ode : Ice

B uild ing C om plete

R unn ing

(U ni t is B uild ing Ice )

Ic e M aking C om m an d:

1. F ro nt Pa ne l

2. T ra ce r

3. E xternal Inpu t

A uto

S hut ting D own

M ax imu m 1 :1 0 t o full y

lo ad ed

R un U nl oa d, C lo se E X Vs a nd P erf orm O pe ra tio na l Pum pd ow n (if re gd ) t hen S hu tof f C om pr ess or s, E ne rgi ze H ea ter s

E nfo rce A ll N on - R un nin g M od e D iagn os tics

w ill r etu rn to “A ut o” an d n or ma l c oo lin g

m od e w ith re mo va l o f Ic e C om ma nd

S tag e a nd m od ula te a ll co m pre ss or s in se qu en ce t o f ull l oa d (if n ot a lre ady )

Ig no re S of tloa di ng a nd S et C LS = 1 00%

E ner giz e Ic e B uild ing R ela y

E nfo rce A ll L im its a nd R un nin g M o de D ia gnos tics

E ner giz e H ea d R elief R eque st R el ay

H ead R elief R eq ue st R el ay

D ela y ( 1 to 6 0 m in s a dj)

D e-e ne rgi ze H ea ter s, a nd C on tro l E XV s p er n or ma l st ag ing - S ee ot he r se qu en ce d ia gra m s

C on tro l C irc uit ’s C on den se r F an s f or D iff P res su re

Tu rn of f b oth C irc uit s’ C on den se r F an s

Le av e E XVs C lo se d o r C los e E XV fo r C ir cui ts’ O ff C yc le

D e-E ne rgize H ead R elie f R eq ue st R el ay

D e-E ne rgize E vap or ato r W ate r P um p R el ay ( no de la y tim e a pp lied)

D e-E ne rgize Ic e B uildin g R ela y

SSttaarrtt--uupp aanndd SShhuuttddoowwnn

Page 79

AC-SVX001A-EN

Maintenance

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee -- PPrreessssuurriizzeedd FFllaammmmaabbllee FFlluuiidd!!

WWAARRNNIINNGG

PPrreessssuurriizzeedd BBuurrnniinngg FFlluuiidd!!

WWAARRNNIINNGG

HHaazzaarrddoouuss VVoollttaaggee ww//CCaappaacciittoorrss!!

FFoorr aaddddiittiioonnaall iinnffoorrmmaattiioonn rreeggaarrddiinngg tthhee ssaaffee ddiisscchhaarrggee ooff ccaappaacciittoorrss,, sseeee AAddaappttiivvee FFrreeqquueennccyy

™™

DDrriivvee CCaappaacciittyy DDiisscchhaarrggee sseeccttiioonn,, aanndd PPRROODD-SSVVBB0066**--EENN..

This section describes the basic chiller preventive maintenance procedures, and recommends the intervals at which these procedures should be performed. Use of a periodic maintenance program is important to ensure the best possible performance and efficiency.

Use an Operator Log (see Log and Check Sheet chapter) to record an operating history for unit. The log serves as a valuable diagnostic tool for service personnel. By observing trends in operating conditions, an operator can anticipate and prevent problem situations before they occur.

If unit does not operate properly during inspections, see Diagnostics chapter.

Recommended Maintenance

Weekly

While unit is running in stable conditions.

1. At AdaptiView™ TD7 or Tracer® TU service tool, check pressure for evaporator, condenser and

Page 80

AC-SVX001A-EN

intermediate oil.

2. Observe liquid line sight glass on EXV. If liquid line sight glass has bubbles measure the subcooling entering the EXV. Subcooling should always be greater than 10°F.

3. Inspect the entire system for unusual operation.

4. Inspect the condenser coils for dirt and debris. If the coils are dirty, see Condenser Coil Corrosion Protection Inspection section of Maintenance chapter.

NNOOTTIICCEE

CCooiill DDaammaaggee!!

UUssee ooff ddeetteerrggeennttss ccoouulldd ccaauussee ddaammaaggee ttoo ccooiillss.. DDoo nnoott uussee ddeetteerrggeennttss ttoo cclleeaann ccooiillss.. UUssee cclleeaann wwaatteerr oonnllyy..

Monthly

1. Perform all weekly maintenance procedures.

2. Record the system subcooling.

Annual

1. Perform all weekly and monthly procedures

2. Check oil sump oil level while unit is off. See Oil Sump Level Check section of Maintenance chapter.

3. Perform pH test of drive cooling fluid. See pH Test section of Maintenance chapter.

4. Have a qualified laboratory perform a compressor oil analysis to determine system moisture content and acid level.

5. Contact a Trane service organization to leak test the chiller, to check operating and safety controls, and to inspect electrical components for deficiencies.

6. Clean and repaint any areas that show signs of corrosion.

7. Clean the condenser coils. See Condenser Coil Corrosion Protection Inspection section of Maintenance chapter.

NNOOTTIICCEE

CCooiill DDaammaaggee!!

UUssee ooff ddeetteerrggeennttss ccoouulldd ccaauussee ddaammaaggee ttoo ccooiillss.. DDoo nnoott uussee ddeetteerrggeennttss ttoo cclleeaann ccooiillss.. UUssee cclleeaann

wwaatteerr oonnllyy..

Refrigerant and Oil Charge Management

Proper oil and refrigerant charge is essential for proper unit operation, unit performance, and environmental protection. Only trained and licensed service personnel should service the chiller.

The following table lists baseline measurements for chillers running at AHRI standard operating conditions. If chiller measurements vary significantly from values listed below, problems may exist with refrigerant and oil charge levels. Contact your local Trane office.

NNoottee:: Low temperature applications units will have

values that vary from the following table. Contact your local Trane office for more information.

Table 25. Typical baselines (AHRI conditions)

Measurement Baseline

Evaporator Pressure 51 psia

Evaporator Approach

3.4°F

EXV Position (150 to 200T units) 45-50% open

EXV Position (225 to 300T units) 61-64% open

Evaporator ΔT - entering

54°F

Evaporator ΔT - leaving

44°F

Discharge Superheat

16.5°F

Condenser Pressure

212 psia

Subcooling

10 to 20°F

Lubrication System

The lubrication system has been designed to keep most of the oil lines filled with oil as long as there is a proper oil level in the oil sump.

Oil Sump Level Check

The oil level in the sump can be measured to give an indication of the system oil charge. Follow the procedures below to measure the level.

1. Run the unit as near to full load as possible for a minimum of 30 minutes. For an accurate reading, 40 or more minutes at full load with normal/steady discharge superheat readings and no limits/ warnings is recommended. Assessing oil charge after running at minimum or low loads may lead to an inaccurate reading.

2. Cycle the compressor off line.

3. Let the chiller sit (powered, but off line) to allow the oil separator heater to boil off the refrigerant that may be in the oil separator. An initial assessment of the oil separator level may be made after 30 minutes of heater ON dwell time, but oil charge adjustments should not be made without allowing the oil heaters to run for a minimum of 4 hours.

MMaaiinntteennaannccee

Page 81

AC-SVX001A-EN

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

OOppeerraattiinngg ccoommpprreessssoorrss wwiitthh sseerrvviiccee vvaallvveess ooppeenn wwiillll rreessuulltt iinn sseevveerree ooiill lloossss aanndd eeqquuiippmmeenntt ddaammaaggee.. NNeevveerr ooppeerraattee tthhee ccoommpprreessssoorr wwiitthh tthhee ssiigghhtt ggllaassss sseerrvviiccee vvaallvveess ooppeenneedd.. CClloossee tthhee vvaallvveess aafftteerr cchheecckkiinngg tthhee ooiill lleevveell..

4. Attach a 3/8” or 1/2” hose with a sightglass in the middle to the oil sump service valve (1/4” flare) and the oil separator service valve (1/4” flare). See the following figure for valve locations.

NNoottee:: High pressure rated clear hose with

appropriate fittings can help speed up the process. Hose must be rated to withstand system pressures as found on unit nameplate.

Figure 61. Oil service valves

To Oil Separator Service Valve

Oil Service Valve

5. After the unit is off line for 30 minutes, move the sightglass along the side of the oil sump.

6. The nominal oil level from the bottom of the oil separator should be as shown in the following table and figure. Depending on running conditions and oil heater dwell time, some deviation from nominal levels is expected.

IImmppoorrttaanntt:: If level is less than 4 inches from the

bottom of the oil separator, contact your local Trane office.

Unit Size

(tons)

Oil Separator

Size

(in)

Nominal Oil

Charge Height

(in)

150 to 200 10 9.0

225 to 300 12 8.5

Figure 62. Nominal oil level

Nominal oil level: 10 in oil sep: 9.0 in 12 in oil sep: 8.5 in

To Oil Separator

Service Valve

Drive Cooling System

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

UUssee ooff uunnaapppprroovveedd fflluuiiddss,, oorr ddiilluuttiioonn ooff aapppprroovveedd fflluuiidd ccoouulldd rreessuulltt iinn ccaattaassttrroopphhiicc eeqquuiippmmeenntt ddaammaaggee.. UUssee oonnllyy TTrraannee HHeeaatt TTrraannssffeerr FFlluuiidd PP//NN CCHHMM0011002233.. TThhiiss fflluuiidd iiss aa ddiirreecctt uussee ccoonncceennttrraattiioonn aanndd iiss nnoott ttoo bbee ddiilluutteedd.. DDoo nnoott ttoopp ooffff wwiitthh wwaatteerr oorr aannyy ootthheerr fflluuiidd..

Service Intervals

NNOOTTIICCEE

EEqquuiippmmeenntt DDaammaaggee!!

FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee.. DDrriivvee ccoooolliinngg fflluuiidd aanndd ssttrraaiinneerr mmuusstt bbee sseerrvviicceedd eevveerryy ffiivvee ((55)) yyeeaarrss..

• Every (5) years, contact your local Trane office to service drive fluid and strainer.

• On a yearly basis, a fluid pH test should be performed.

Unit Diagnostics

An improperly filled drive cooling system (either low fluid level or entrapped air in the circuit) can result in the AFD drive overheating. This condition may result in the following diagnostic(s):

MMaaiinntteennaannccee

Page 82

AC-SVX001A-EN

• AFD xA Over Temperature

A front panel warning of Low Oil Return or AFD Cooling – CktX does not indicate an issue with the drive cooling fluid system, but represents a low refrigerant level reported by the liquid level sensor for a given length of time.

If chiller diagnostics indicated drive cooling system problem, contact your local Trane office.

pH Test

Obtain a sample of fluid from the drive cooling loop via the loop drain located near the oil return heat exchanger. Test for pH level using litmus paper with a

0.5 resolution.

• pH < 8 indicates fluid to be changed

• pH < 7 indicates potential component damage

Pressure Relief Cap

The pressure relief cap is an automotive style pressurevent radiator cap. See figure below. The setting for the relief spring is 16 lbs. The function of the relief cap can be verified with a standard automotive radiator cap tester.

Figure 63. Pressure relief cap

Pressure Relief Cap

Drive Cooling

Fluid

Expansion

Tank

Drive Cooling Expansion Tank

Proper fluid level is important to the operation of the unit. To verify proper level, inspect the liquid level in each of the fluid reservoirs (located behind the chiller control panel). See figure below for fluid levels under various temperature conditions. If levels levels are low, contact your local Trane office.

Figure 64. Drive cooling expansion tank fill

Max Fill 70°F (21°C) Design Fill 125°F (51.7°C)

Max Fill

-20°F (-28.9°C) Design Fill 70°F (21°C)

Min Fill 70°F (21°C) Design Fill

-20°F (-28.9°C)

NNoottee:: Fill lines are NOT marked on tank. The A level is

just below upper fitting. C level is above lower fitting. B is in the middle of the fittings.

Condenser Coil Corrosion Protection Inspection

Perform coil inspection each time coils are cleaned.

Inspect corrosion protection at each coil refrigerant connection where the copper tube joins the aluminum manifold. If damaged or missing, wrap new Prestite Insulated tar tape (STR01506) on joint to cover area from the aluminum header body to at least 2 inches of the copper tube. Seal insulation using hand pressure. Rubber gloves are suggested when handling insulation.

NNoottee:: Prestite insulated tar tape is required for all units

at each copper/aluminum connection. This requirement is NOT associated with the coated coil option.

Condenser Coil Cleaning

Coil Cleaning Interval

Clean condenser coils at least once a year or more frequently if it is in a "dirty" environment. A clean condenser coil will help maintain chiller operating efficiency.

MMaaiinntteennaannccee

Page 83

AC-SVX001A-EN

Cleaning Air Side of Coils

NNOOTTIICCEE

CCooiill DDaammaaggee!!

UUssee ooff ccooiill cclleeaanniinngg aaggeennttss oonn uunnccooaatteedd ccooiillss ccoouulldd ccaauussee ddaammaaggee ttoo ccooiillss.. DDoo nnoott uussee ccooiill cclleeaanniinngg aaggeennttss ttoo uunnccooaatteedd cclleeaann ccooiillss.. UUssee cclleeaann wwaatteerr oonnllyy..

Do not use detergents to clean the air side of coils. Use clean water only. Clean from inside out by removing end panels.

Cleaning Coated Coils

WWAARRNNIINNGG

HHaazzaarrddoouuss CChheemmiiccaallss!!

CCooiill cclleeaanniinngg aaggeennttss ccaann bbee eeiitthheerr aacciiddiicc oorr hhiigghhllyy aallkkaalliinnee aanndd ccaann bbuurrnn sseevveerreellyy iiff ccoonnttaacctt wwiitthh sskkiinn oorr eeyyeess ooccccuurrss.. HHaannddllee cchheemmiiccaall ccaarreeffuullllyy aanndd aavvooiidd ccoonnttaacctt wwiitthh sskkiinn.. AALLWWAAYYSS wweeaarr PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) iinncclluuddiinngg ggoogggglleess oorr ffaaccee sshhiieelldd,, cchheemmiiccaall rreessiissttaanntt gglloovveess,, bboooottss,, aapprroonn oorr ssuuiitt aass rreeqquuiirreedd.. FFoorr ppeerrssoonnaall ssaaffeettyy rreeffeerr ttoo tthhee cclleeaanniinngg aaggeenntt mmaannuuffaaccttuurreerr’’ss MMaatteerriiaallss SSaaffeettyy DDaattaa SShheeeett aanndd ffoollllooww aallll rreeccoommmmeennddeedd ssaaffee hhaannddlliinngg pprraaccttiicceess..

Coated coils may be cleaned using traditional detergents.

Reinstallation of Compressor Mounting Bolts

UUnniittss wwiitthh IInnvviissiiSSoouunndd™™ UUllttiimmaattee OOnnllyy ((MMooddeell NNuummbbeerr DDiiggiitt 1122 == 33))

If compressor removal or unit move is required on a unit with InvisiSound™ Ultimate option, reinstall compressor mounting bolts which were removed per installation or maintenance instructions.

Servicing Chiller Roof

WWAARRNNIINNGG

DDoo NNoott CClliimmbb oonn TToopp ooff UUnniitt!!

FFaaiilluurree ttoo ffoollllooww tthheessee iinnssttrruuccttiioonnss ccoouulldd rreessuulltt iinn tteecchhnniicciiaann ffaalllliinngg ooffff tthhee eeqquuiippmmeenntt wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy.. DDoo nnoott cclliimmbb oonn rrooooff ttoo sseerrvviiccee uunniitt.. UUssee sseerrvviiccee ttoooollss ddeessiiggnneedd ttoo aacccceessss ttoopp ooff cchhiilllleerr..

Service tools are available to access top of chiller. Entry on chiller roof is not required.

MMaaiinntteennaannccee

Page 84

AC-SVX001A-EN

Diagnostics

General Diagnostics Information

DDiiaaggnnoossttiicc NNaammee aanndd SSoouurrccee:: Name of Diagnostic and its source. The variable “x” in the AFD diagnostic name string denotes a circuit designator (either 1 or 2). With that exception, this is the exact text used in the User Interface and/or Service Tool displays.

AAffffeeccttss TTaarrggeett:: Defines the "target" or what is affected by the diagnostic. Usually either the entire Chiller, or a particular Circuit or Compressor is affected by the diagnostic (the same one as the source), but in special cases functions are modified or disabled by the diagnostic. "None" implies that there is no direct affect to the chiller, sub components or functional operation.

DDeessiiggnn NNoottee:: Functions that are affected by a diagnostic are simply reported as "chiller or circuit x" targets in Tracer TU and on the Alarms page of the AdaptiView™ display, even though only a specific function and not the entire circuit or chiller would be effected.

SSeevveerriittyy:: Defines the severity of the above effect. Immediate means immediate shutdown of the affected portion, Normal means normal or friendly shutdown of the affected portion, Special Action means a special action or mode of operation (limp along) is invoked, but without shutdown, and Info means an Informational Note or Warning is generated. Design Note: Tracer TU does not support display of "Special Action", on its Diagnostics pages, so that if a diagnostic has a special action defined in the table below, it will be displayed only as "Informational Warning" as long as

no circuit or chiller shutdown results. If there is a shutdown and special action defined in the table, then the Tracer® TU Diagnostics Page display will indicate the shutdown type only.

PPeerrssiisstteennccee:: Defines whether or not the diagnostic and its effects are to be manually reset (Latched), or can be either manually or automatically reset when and if the condition returns to normal (Nonlatched).

AAccttiivvee MMooddeess [[IInnaaccttiivvee MMooddeess]]:: States the modes or periods of operation that the diagnostic is active in and, as necessary, those modes or periods that it is specifically "not active" in as an exception to the active modes. The inactive modes are enclosed in brackets, [ ]. Note that the modes used in this column are internal and not generally annunciated to any of the formal mode displays.

CCrriitteerriiaa:: Quantitatively defines the criteria used in generating the diagnostic and, if nonlatching, the criteria for auto reset.

RReesseett LLeevveell:: Defines the lowest level of manual diagnostic reset command which can clear the diagnostic. The manual diagnostic reset levels in order of priority are: Local or Remote. For example, a diagnostic that has a reset level of Remote, can be reset by either a remote diagnostic reset command or by a local diagnostic reset command.

AFD Diagnostics

Table 26. Diagnostics — AFD

Diagnostic

Name and

Source

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

AFD 1A Input

Phase Loss

Circuit Immediate Latch

All compressor

starting and

running modes

The respective AFD has detected high ripple on the

DC bus indicative of an input phase loss. Suspect

open phase, check input voltage and current

capability on all legs.

Local

AFD 2A Input

Phase Loss

Circuit Immediate Latch

All compressor

starting and

running modes

The respective AFD has detected high ripple on the

DC bus indicative of an input phase loss. Suspect

open phase, check input voltage and current

capability on all legs.

Local

AFD 1A Bus

Under Voltage

Circuit

Immediate

(decel)

NonLatch All

The bus voltage dropped below the Under Voltage

Level and there is not enough voltage to reliably operate the load, or input voltage was lost on all

phases (Power Loss). The drive shall automatically

clear this diagnostic if the undervoltage is corrected

within 15s, or if a power loss event, when power is

restored at any later time.

Local

Page 85

AC-SVX001A-EN

Table 26. Diagnostics — AFD (continued)

Diagnostic

Name and

Source

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

AFD 2A Bus

Under Voltage

Circuit

Immediate

(decel)

NonLatch All

The bus voltage dropped below the Under Voltage

Level and there is not enough voltage to reliably operate the load, or input voltage was lost on all

phases (Power Loss). The drive shall automatically

clear this diagnostic if the undervoltage is corrected

within 15s, or if a power loss event, when power is

restored at any later time.

Local

AFD 1A Bus

Over Voltage

Circuit Immediate NonLatch

Holding, Running

Bus overvoltage indicated the high bus voltage cut

out has been exceeded while the AFD is in a non-

stopped mode. The drive shall automatically clear

this diagnostic if the dc bus voltage returns to normal

range within 15s.

Local

AFD 2A Bus

Over Voltage

Circuit Immediate NonLatch

Holding,

Running

Bus overvoltage indicated the high bus voltage cut

out has been exceeded while the AFD is in a non-

stopped mode. The drive shall automatically clear

this diagnostic if the dc bus voltage returns to normal

range within 15s.

Local

AFD 1A Loss Of Motor Control

Circuit Immediate NonLatch All

AFD generated faults that can occur due to external

power anomalies or abnormal motor loading that

require ability to auto reset. This diagnostic maps to

the occurrence of AFD generated faults of: Hardware

Over Current, Over Speed Limit, IPM Over Current,

Drive Powerup, IPM and Speed Estimate Error.

Local

AFD 2A Loss Of Motor Control

Circuit Immediate NonLatch All

AFD generated faults that can occur due to external

power anomalies or abnormal motor loading that

could be a transient or temporary condition. This diagnostic maps to the occurrence of AFD generated faults of: Hardware Over Current, Over Speed Limit,

IPM Over Current, Drive Powerup, IPM and Speed

Estimate Error.

Local

AFD 1A Motor

Fault

Circuit Immediate Latch All

AFD generated faults that imply internal failures.

This diagnostic maps to the occurrence of AFD

generated faults of: Motor Overload, Load Loss, and

Output Phase Loss. Check output wiring and motor

health.

Local

AFD 2A Motor

Fault

Circuit Immediate Latch All

AFD generated faults that imply internal failures.

This diagnostic maps to the occurrence of AFD

generated faults of: Motor Overload, Load Loss, and

Output Phase Loss. Check output wiring and motor

health.

Local

AFD 1A Over Temperature

Circuit Immediate Latch All

Heatsink Over Temperature (185°F/85°C),

Transistor Over Temperature (320°F/160°C) or

Control Board Over Temperature. Check drive liquid

or air cooling.

Local

AFD 2A Over Temperature

Circuit Immediate Latch All

Heatsink Over Temperature (185°F/85°C),

Transistor Over Temperature (320°F/160°C) or

Control Board Over Temperature. Check drive liquid

or air cooling.

Local

AFD 1A Motor

Current

Overload

Circuit

Immediate

(decel)

Latch

Running

Software Filtered Overcurrent has been detected.

Can be loss of control of motor, or hardware failure.

Local

AFD 2A Motor

Current

Overload

Circuit

Immediate

(decel)

Latch

Running

Software Filtered Overcurrent has been detected.

Can be loss of control of motor, or hardware failure.

Local

DDiiaaggnnoossttiiccss

Page 86

AC-SVX001A-EN

Table 26. Diagnostics — AFD (continued)

Diagnostic

Name and

Source

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

AFD 1A

Customized

Protection

Fault

Circuit Immediate

Latch

(a)

All

One of drive custom protections has occurred (Pump-Out Failed, Low Rotor Flux Feedback, or Bump Failure) OR drive custom protections not

enabled or programmed. Contact Trane Service.

(a)

Local

AFD 2A

Customized

Protection

Fault

Circuit Immediate

Latch

(a)

All

One of drive custom protections has occurred (Pump-Out Failed, Low Rotor Flux Feedback, or Bump Failure) OR drive custom protections not

enabled or programmed. Contact Trane Service.

(a)

Local

AFD 1A Ground

Fault

Circuit Immediate Latch All

Measured ground current exceeds ground current sensitivity. Read drive fault value over Tracer® TU

and refer to drive programming manual to determine

which output leg and transistors are indicated.

Local

AFD 2A Ground

Fault

Circuit Immediate Latch All

Measured ground current exceeds ground current sensitivity. Read drive fault value over Tracer® TU

and refer to drive programming manual to determine

which output leg and transistors are indicated.

Local

AFD 1A Motor

Shorted

Circuit Immediate Latch All

Motor or power stage is shorted line-to-line. Read

drive fault value over Tracer® TU and refer to drive

programming manual to determine which phases are

indicated.

Local

AFD 2A Motor

Shorted

Circuit Immediate Latch All

Motor or power stage is shorted line-to-line. Read

drive fault value over Tracer® TU and refer to drive

programming manual to determine which phases are

indicated.

Local

AFD 1A Comm

Loss: Main

Processor

Circuit

Immediate

(decel)

Latch All

The AFD detected a continual loss of communication

with the main processor for greater than 10s.

Local

AFD 1A Comm

Loss: Main

Processor

Circuit

Immediate

(decel)

Latch All

The AFD detected a continual loss of communication

with the main processor for greater than 10s.

Local

AFD 1A

Precharge Fault

Circuit Immediate Latch All

The drives internal precharge was commanded to

open while the drive was running. This can occur if

the DC bus drops to a low level.

Local

AFD 2A

Precharge Fault

Circuit Immediate Latch All

The drives internal precharge was commanded to

open while the drive was running. This can occur if

the DC bus drops to a low level.

Local

AFD 1A

General Failure

Circuit

Immediate

(decel)

Latch All

Drive fault other than those supported in this list. Read drive fault value over Tracer TU and refer to

drive programming manual.

Local

AFD 2A

General Failure

Circuit

Immediate

(decel)

Latch All

Drive fault other than those supported in this list. Read drive fault value over Tracer TU and refer to

drive programming manual.

Local

AFD 1A Gate

Kill Active

Circuit Immediate NonLatch All

The respective drive’s gate-kill circuitry was

activated (open circuit). The respective compressor’s

High Pressure Cutout Switch is wired into this circuit,

and will cause an immediate shutdown of the drive

and compressor in the event of an HPC trip. A 2nd

separate HPC diagnostic will occur in conjunction

with this diagnostic – see details of the Main

Processor Diagnostic “High Pressure Cutout” below

(that is latching).

Local

DDiiaaggnnoossttiiccss

Page 87

AC-SVX001A-EN

Table 26. Diagnostics — AFD (continued)

Diagnostic

Name and

Source

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

AFD 2A Gate

Kill Active

Circuit Immediate NonLatch All

The respective drive’s gate-kill circuitry was

activated (open circuit). The respective compressor’s

High Pressure Cutout Switch is wired into this circuit,

and will cause an immediate shutdown of the drive

and compressor in the event of an HPC trip. A 2nd

separate HPC diagnostic will occur in conjunction

with this diagnostic – see details of the Main

Processor Diagnostic “High Pressure Cutout” below

(that is latching).

Local

AFD 1A Input

Transformer or

Filter High

Temp

Circuit

Immediate

Shutdown

Latch All

The AFD is tripped by Input Transformer or Filter

High Temperature Cutout.

Local

AFD 2A Input

Transformer or

Filter High

Temp

Circuit

Immediate

Shutdown

Latch All

The AFD is tripped by Input Transformer or Filter

High Temperature Cutout.

Local

AFD 1A Low

Rotor Flux

Feedback

Circuit

Immediate

(decel)

Latch

Running

The estimated rotor flux dropped below the minimum

threshold. Suspect motor demagnetization.

Local

AFD 2A Low

Rotor Flux

Feedback

Circuit

Immediate

(decel)

Latch

Running

The estimated rotor flux dropped below the minimum

threshold. Suspect motor demagnetization.

Local

Main Processor Diagnostics

Table 27. Diagnostics — main processor

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Drive Cooling

Temp Sensor –

Ckt2

Circuit Normal Latch All Bad Sensor or LLID. Remote

BAS

Communica-

tion Lost

None

Special Action

NonLatch All

The BAS was setup as "installed" at the MP and the

Lontalk LCIC lost communications with the BAS for 15 contiguous minutes after it had been established. Refer to Section on Setpoint Arbitration to determine

how setpoints and operating modes may be affected

by the comm loss. The chiller follows the value of the

Tracer Default Run Command which can be

previously written by Tracer and stored nonvolatilely

by the MP (either use local or shutdown). Note that

this diagnostic is never operational for BacNet

Communication interface (BCIC) and only operational with a LonTalk Communication interface (LCIC) if so configured by the BAS or Tracer system.

Remote

BAS Failed to

Establish

Communica-

tion

None

Special Action

NonLatch

At power-up

The BAS was setup as "installed" and the BAS did not

communicate with the Lontalk LCIC within 15

minutes after chiller controls power-up. Refer to

Section on Setpoint Arbitration to determine how

setpoints and operating modes may be effected. Note that this diagnostic is never operational for

BacNet Communication interface (BCIC) and only operational with a LonTalk Communication interface (LCIC) if so configured by the BAS or Tracer system.

Remote

DDiiaaggnnoossttiiccss

Page 88

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Check Clock Chiller Info Latch All

The real time clock had detected loss of its oscillator

at some time in the past. Check / replace battery This

diagnostic can be effectively cleared only by writing a

new value to the chiller’s time clock using the TU's

“set chiller time” functions.

Remote

Condenser Fan Inverter Fault -

Ckt1

None Info NonLatch All

A fault signal has been detected from at least one of

the Variable Speed Inverter Drive Condenser Fans of

Circuit 1 (including the right hand fan of the Shared

Fan Module if present). No action is taken.

Remote

Condenser Fan Inverter Fault -

Ckt2

None Info NonLatch All

A fault signal has been detected from at least one of

the Variable Speed Inverter Drive Condenser Fans of

Circuit 2 (including the left hand fan of the Shared

Fan Module if present). No action is taken

Remote

Condenser Rfgt

Pressure

Transducer -

Ckt1

Circuit Immediate Latch All Bad Sensor or LLID Remote

Condenser Rfgt

Pressure

Transducer -

Ckt2

Circuit Immediate Latch All Bad Sensor or LLID Remote

Discharge Rfgt Temp Sensor –

Cprsr1A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Discharge Rfgt Temp Sensor –

Cprsr2A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Drive Cooling

Supply Temp

Sensor – Ckt1

Circuit Normal Latch All Bad Sensor or LLID. Remote

Emergency

Stop

Chiller Immediate Latch All

EMERGENCY STOP input is open. An external

interlock has tripped. Time to trip from input opening

to unit stop shall be 0.1 to 1.0 seconds

Local

Evap Rfgt Pool

Temp Sensor –

Ckt1

Circuit and

Chiller

Special Action

and Info

NonLatch All

Bad Sensor or LLID. Note: The Evap Pool Temp

Sensors are used for evaporator freeze protection

(running and non-running)

Remote

Evap Rfgt Pool

Temp Sensor –

Ckt2

Circuit and

Chiller

Special Action

and Info

NonLatch All

Bad Sensor or LLID. Note: The Evap Pool Temp

Sensors are used for evaporator freeze protection

(running and non-running)

Remote

Evap Rfgt Pool

Temp Sensor

Error – Ckt1

Circuit

Info and

Special Action

Latch

Ckt Energized

[Ckt Not

Energized

The evaporator refrigerant pool temperature sensor

is indicating a temperature significantly warmer than the evaporator entering water temperature (by more

than 7.2°F for 5 continuous min excluding ckt

nonoperation and a 2 min ignore time relative to ckt

startup). While this diagnostic is active, it will invalidate the evaporator pool temperature sensor. Freeze protection functions (i.e. freeze diagnostics

and Evap Pump Override) will default to the

respective evaporator pressure transducer and its

calculated saturation temperature

Local

DDiiaaggnnoossttiiccss

Page 89

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Evap Rfgt Pool

Temp Sensor

Error – Ckt2

Circuit

Info and

Special Action

Latch

Ckt Energized

[Ckt Not

Energized

The evaporator refrigerant pool temperature sensor is indicating a temperature significantly warmer than the evaporator entering water temperature (by more

than 7.2°F for 5 continuous min excluding ckt

nonoperation and a 2 min ignore time relative to ckt

startup). While this diagnostic is active, it will invalidate the evaporator pool temperature sensor. Freeze protection functions (i.e. freeze diagnostics

and Evap Pump Override) will default to the

respective evaporator pressure transducer and its

calculated saturation temperature

Local

Evap Spillover

Liquid Level

Sensor – Ckt1

Circuit Normal Latch All Bad Sensor or LLID Remote

Evap Spillover

Liquid Level

Sensor – Ckt2

Circuit Normal Latch All Bad Sensor or LLID Remote

Evap Water

Flow (Entering

Water Temp)

None Info NonLatch

Any Ckt

Energized [ No

Ckts

Energized]

The entering evaporator water temp fell below the

leaving evaporator water temp by more than 2°F for

180 °F-sec, minimum trip time 30 seconds. It can

warn of improper flow direction through the

evaporator, misbound water temperature sensors,

improper sensor installation, partially failed sensors,

or other system problems. Note that either entering

or leaving water temp sensor or the water system

could be at fault

Remote

Evaporator

Approach Error

– Ckt1

Circuit Immediate Latch

Respective

circuit running

The Evaporator approach temperature for the

respective circuit (ELWT – Evap Sat Temp Ckt 1) is

negative by more than 10°F for 1 minute

continuously while the circuit / compressor is

operating. Either the Evap Leaving Water Temp

sensor, or Evap Suction Rfgt Pressure Transducer Ckt

1 is in error

Remote

Evaporator

Approach Error

– Ckt2

Circuit Immediate Latch

Respective

circuit running

The Evaporator approach temperature for the

respective circuit (ELWT – Evap Sat Temp Ckt 2) is

negative by more than 10°F for 1 minute

continuously while the circuit / compressor is

operating. Either the Evap Leaving Water Temp

sensor, or Evap Suction Rfgt Pressure Transducer Ckt

2 is in error

Remote

Evaporator

Entering Water

Temp Sensor

Chiller Normal Latch All

Bad Sensor or LLID. Note: Entering Water Temp Sensor is used in EXV pressure control as well as ice making so it must cause a unit shutdown even if ice

or CHW reset is not installed

Remote

Evaporator

Leaving Water

Temp Sensor

Chiller Normal Latch All Bad Sensor or LLID Remote

Evaporator Water Flow

Lost

Chiller Immediate NonLatch

[All Stop

modes]

a. The Evaporator water flow switch input was open

for more than 6 contiguous seconds (or 15 seconds

for thermal dispersion type flow switch). b. This

diagnostic does not de-energize the evap pump

output. c. 6 seconds of contiguous flow shall clear

this diagnostic

Remote

DDiiaaggnnoossttiiccss

Page 90

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Evaporator Water Flow

Overdue

Chiller Normal NonLatch

Estab. Evap.

Water Flow on

going from

STOP to AUTO

or Evap Pump

Override.

Evaporator water flow was not proven within 20

minutes of the Evaporator water pump relay being

energized in normal “Stop” to “Auto” transition. If the

pump is overridden to “On” for certain diagnostics,

the delay on diagnostic callout shall be only 255

seconds. The pump command status will not be

affected by this diagnostic in either case

Remote

Excessive

Condenser

Pressure –

Ckt1

Circuit Immediate Latch All

The condenser pressure transducer of this circuit has

detected a condensing pressure in excess of the

design high side pressure as limited by the particular

compressor type

Remote

Excessive

Condenser

Pressure –

Ckt2

Circuit Immediate Latch All

The condenser pressure transducer of this circuit has

detected a condensing pressure in excess of the

design high side pressure as limited by the particular

compressor type

Remote

External

Chilled/Hot

Water Setpoint

None Info Latch All

a. Function Not "Enabled": no diagnostics. b.

"Enabled ": Out-Of-Range Low or Hi or bad LLID, set

diagnostic, default CWS to next level of priority (e.g.

Front Panel SetPoint)

Remote

External

Demand Limit

Setpoint

None Info Latch All

a. Not "Enabled": no diagnostics. b. "Enabled ": Out-

Of-Range Low or Hi or bad LLID, set diagnostic,

default CLS to next level of priority (e.g. Front Panel

SetPoint

Remote

Failure to Arm

or Hold - AFD

Circuit Info Nonlatch All

AFD 1A (controlling Compressor 1A) failed to

respond in an appropriate time with its status of

Armed to Hold or Hold within the allotted time of 1

minute of the sent command. (Arm to Hold command

sent; armed to Hold status received; Hold command

sent; Hold status received)

Local

Failure to Arm

or Hold - AFD

Circuit Info Nonlatch All

AFD 2A (controlling Compressor 2A) failed to

respond in an appropriate time with its status of

Armed to Hold or Hold within the allotted time of 1

minute of the sent command. (Arm to Hold command

sent; armed to Hold status received; Hold command

sent; Hold status received)

Local

Failure to Arm

or Start - AFD

Circuit Immediate Latch All

AFD 1A (controlling Compressor 1A) failed to arm or

start within the allotted time of 1 minute. (Arm to

Start command sent; armed to Start status received;

Start command sent; Started status received)

Local

Failure to Arm

or Start - AFD

Circuit Immediate Latch All

AFD 2A (controlling Compressor 2A) failed to arm or

start within the allotted time of 1 minute. (Arm to

Start command sent; armed to Start status received;

Start command sent; Started status received)

Local

High

Differential

Rfgt Pressure -

Ckt1

Circuit Normal Latch

Cprsr

Energized [Service/Op Pumpdown]

The differential pressure for the respective circuit

was above 275 Psid (1890 kPa) for 2 consecutive

samples 5 seconds apart

Remote

High

Differential

Rfgt Pressure -

Ckt2

Circuit Normal Latch

Cprsr

Energized [Service/Op Pumpdown]

The differential pressure for the respective circuit

was above 275 Psid (1890 kPa) for 2 consecutive

samples 5 seconds apart

Remote

DDiiaaggnnoossttiiccss

Page 91

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

High Discharge Temperature –

Cprsr1A

Circuit Immediate Latch

All

[compressor

run unload or

compressor not

running]

The compressor discharge temperature exceeded

200°F (without oil cooler) or 230ºF (with oil cooler).

This diagnostic will be suppressed during Stopping

mode or after the compressor has stopped. Note: As

part of the Compressor High Temperature Limit Mode

(aka Minimum Capacity Limit), the compressor shall

be forced loaded as the filtered discharge

temperature reaches 190ºF (without oil coolers), or

220ºF (with oil coolers)

Remote

High Discharge Temperature –

Cprsr2A

Circuit Immediate Latch

All

[compressor

run unload or

compressor not

running]

The compressor discharge temperature exceeded

200°F (without oil cooler) or 230ºF (with oil cooler).

This diagnostic will be suppressed during Stopping

Mode or after the compressor has stopped. Note: As

part of the Compressor High Temperature Limit Mode

(aka Minimum Capacity Limit), the compressor shall

be forced loaded as the filtered discharge

temperature reaches 190ºF (without oil coolers), or

220ºF (with oil coolers)

Remote

High Evaporator Refrigerant

Pressure

Chiller Immediate NonLatch All

The evaporator refrigerant pressure of either circuit

has risen above 190 psig. The evaporator water

pump relay will be de-energized to stop the pump

regardless of why the pump is running. The

diagnostic will auto reset and the pump will return to

normal control when all of the evaporator pressures

fall below 185 psig. The primary purpose is to stop

the evaporator water pump and its associated pump

heat from causing refrigerant side pressures, close to

the evaporator relief valve setting, when the chiller is

not running, such as could occur with Evap Water

Flow Overdue or Evaporator Water Flow Loss

Diagnostics

Remote

High Evaporator

Water

Temperature

Chiller

Info and

Special Action

NonLatch

Only effective if

either 1)Evap

Wtr Flow

Overdue, 2) Evap Wtr Flow Loss, or 3)Low

Evap Rfgt

Temp,-Unit Off,

diagnostic is

active.

Either the leaving or the entering water temperature exceeded the high evap water temp limit (TV service

menu settable –default 105F) for 15 continuous

seconds. The evaporator water pump relay will be

de-energized to stop the pump but only if it is

running due one of the diagnostics listed on the left .

The diagnostic will auto reset and the pump will

return to normal control when both the entering and

leaving temperatures fall 5F below the trip setting.

The primary purpose is to stop the evaporator water

pump and its associated pump heat from causing excessive waterside temperatures and waterside

pressures when the chiller is not running but the

evap pump is on due to either Evap Water Flow Overdue, Evaporator Water Flow Loss , or Low Evap Temp – Unit Off Diagnostics. This diagnostic will not

auto clear solely due to the clearing of the enabling

diagnostic

Remote

High Motor

Winding

Temperature -

Cprsr1A

Circuit Immediate Latch All

Any of the compressor’s motor winding temperature

sensors is seen to be beyond the windings rated

temperature of 265°F (129.4°C)

Local

High Motor

Winding

Temperature -

Cprsr2A

Circuit Immediate Latch All

Any of the respective compressor’s motor winding

temperature sensors is seen to be beyond the

windings rated temperature of 265°F (129.4°C)

Local

High Pressure

Cutout Cprsr1A

Circuit Immediate Latch All

A high pressure cutout was detected by AFD 1A Gate

Kill Input ; trip at 315 ± 5 PSIG

Local

DDiiaaggnnoossttiiccss

Page 92

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

High Pressure

Cutout Cprsr2A

Circuit Immediate Latch All

A high pressure cutout was detected by AFD 2A Gate

Kill Input ; trip at 315 ± 5 PSIG

Local

High

Refrigerant

Pressure Ratio

– Ckt1

Circuit Immediate Latch

Cprsr

Energized

The pressure ratio for the respective circuit exceeded

12.3 for 1 contiguous minute while running in any

mode. The pressure ratio is defined as Pcond (abs)/

Pevap(abs)

Remote

High

Refrigerant

Pressure Ratio

– Ckt2

Circuit Immediate Latch

Cprsr

Energized

The pressure ratio for the respective circuit exceeded

12.3 for 1 contiguous minute while running in any

mode. The pressure ratio is defined as Pcond (abs)/

Pevap(abs)

Remote

Interrupt

Failure –

AFD1A

Circuit

Immediate Shutdown and Special Action

Latch

AFD intended

to be OFF

Respective AFD is reporting that it is still running the

compressor when the MP has commanded the drive/

compressor to be Off. Detection time shall be 10

seconds minimum and 15 seconds maximum. With build rev 2.13 and later: 22 sec min, 27sec max. On detection and until the controller is manually reset:

this diagnostic shall be active and the alarm relay

shall be energized, the Evap Pump Output will be

energized, the effected compressor will be

continually commanded off, and be unloaded. For as

long as compressor operation continues, the MP shall

continue liquid level, oil return, and fan control on

the circuit effected.

Local

Interrupt

Failure –

AFD2A

Circuit

Immediate Shutdown and Special Action

Latch

AFD intended

to be OFF

Respective AFD is reporting that it is still running the

compressor when the MP has commanded the drive/

compressor to be Off. Detection time shall be 10

seconds minimum and 15 seconds maximum. With build rev 2.13 and later: 22 sec min, 27sec max. On detection and until the controller is manually reset:

this diagnostic shall be active and the alarm relay

shall be energized, the Evap Pump Output will be

energized, the effected compressor will be

continually commanded off, and be unloaded. For as

long as compressor operation continues, the MP shall

continue liquid level, oil return, and fan control on

the circuit effected.

Local

LCI-C Software

Mismatch: Use

BAS Tool

Chiller Info Nonlatch All

The neuron software in the LCI-C module does not

match the chiller type. Download the proper software

into the LCI-C neuron. To do this, use the Rover

service tool, or a LonTalk® tool capable of downloading software to a Neuron 3150®

Remote

Loss of Oil

(Running) -

Cprsr1A

Circuit Immediate Latch

Starter Contactor Energized

In running modes , Oil Loss Level Sensor detects lack

of oil in the oil sump feeding the compressor

(distinguishing a liquid flow from a vapor flow)

Local

Loss of Oil

(Running) -

Cprsr2A

Circuit Immediate Latch

Starter Contactor Energized

In running modes , Oil Loss Level Sensor detects lack

of oil in the oil sump feeding the compressor

(distinguishing a liquid flow from a vapor flow)

Local

Loss of Oil

(Stopped) –

Cprsr1A

Circuit

Immediate

Shutdown and

Special Action

Latch

Compressor

Pre-start [all

other modes]

Oil Loss Level Sensor detects a lack of oil in the oil

sump feeding the compressor for 90 seconds after

EXV preposition is completed on an attempted circuit

start. Note: Compressor start is delayed pending oil

detection during that time, but not allowed once the

diagnostic occurs

Local

Loss of Oil

(Stopped) –

Cprsr2A

Circuit

Immediate

Shutdown and

Special Action

Latch

Compressor

Pre-start [all

other modes]

Oil Loss Level Sensor detects a lack of oil in the oil

sump feeding the compressor for 90 seconds after

EXV preposition is completed on an attempted circuit

start. Note: Compressor start is delayed pending oil

detection during that time, but not allowed once the

diagnostic occurs

Local

DDiiaaggnnoossttiiccss

Page 93

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Low

Differential

Rfgt Pressure -

Ckt1

Circuit Immediate Latch

Cprsr

Energized

The system differential pressure (Pc-Pe) for the

respective circuit was below 15 psid (240.5 kPa) or the pressure ratio (Pc/Pe) was less than 1.1 while the compressor is running for a period of time dependent

on the deficit (15 sec ignore time from circuit start)

Refer to the Oil Flow Protection specification for the

time to trip function.

Remote

Low

Differential

Rfgt Pressure -

Ckt2

Circuit Immediate Latch

Cprsr

Energized

The system differential pressure (Pc-Pe) for the

respective circuit was below 15psid (240.5 kPa) or the pressure ratio (Pc/Pe) was less than 1.1 while the compressor is running for a period of time dependent

on the deficit (15 sec ignore time from circuit start) Refer to the Oil Flow Protection specification for the

time to trip function.

Remote

Low Discharge

Superheat –

Ckt1

Circuit Normal Latch

Any Running

Mode

While Running Normally, the Discharge Superheat

was less than 9 degrees F for more than 4878 degree

F seconds. At circuit startup, the Discharge

Superheat will be ignored for 5 minutes

Remote

Low Discharge

Superheat –

Ckt2

Circuit Normal Latch

Any Running

Mode

While Running Normally, the Discharge Superheat

was less than 9 degrees F for more than 4878 degree

F seconds. At circuit startup, the Discharge

Superheat will be ignored for 5 minutes

Remote

Low Drive

Cooling Supply

Temp – Ckt1

Circuit Info NonLatch

All Ckt Running

Modes

The Drive Cooling Supply temperature for the

respective circuit is seen to be more than 5F cooler

than its setpoint for more than 30 minutes. Auto-

reset if temperatures return to Undesirable

condensation is possible on the cooled surfaces

inside the control panel. Inspect the Drive Cooling

System components for misoperation or failure

Low Drive

Cooling Supply

Temp – Ckt2

Circuit Info NonLatch

All Ckt Running

Modes

The Drive Cooling Supply Temperature for the

respective circuit is seen to be more than 5F cooler

than its setpoint for more than 30 minutes. Undesirable condensation is possible on the cooled surfaces inside the control panel. Inspect the Drive

Cooling System components for misoperation or

failure

Low

Evaporator

Rfgt Pressure -

Ckt1

Circuit Immediate Latch

Cprsr Prestart

and Cprsr Energized

a. The Evap Refrig Pressure dropped below 10 Psia

just prior to compressor start (after EXV

preposition). b. During Early Startup Period: the

Evap Refrig Pressure fell below a pressure equal to

Condenser Pressure ÷ 8 but as limited to not less

than 6 or greater than 10 psia. c. After Early Startup

Period expires: The Evap Refrig Pressure fell below

16 Psia for 30 seconds or below 10 psia for 5 seconds. (Note: the Early Startup Period for RTAE it is between 1 and 5 min as an inverse function of the

Cond Temp measured at time of circuit startup)

Local

DDiiaaggnnoossttiiccss

Page 94

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Low

Evaporator

Rfgt Pressure -

Ckt2

Circuit Immediate Latch

Cprsr Prestart

and Cprsr Energized

a. The Evap Refrig Pressure dropped below 10 Psia

just prior to compressor start (after EXV

preposition). b. During Early Startup Period: the

Evap Refrig Pressure fell below a pressure equal to

Condenser Pressure ÷ 8 but as limited to not less

than 6 or greater than 10 psia. c. After Early Startup

Period expires: The Evap Refrig Pressure fell below

16 Psia for 30 seconds or below 10 psia for 5 seconds. (Note: the Early Startup Period for RTAE it is between 1 and 5 min as an inverse function of the

Cond Temp measured at time of circuit startup)

Local

Low

Evaporator

Rfgt

Temperature -

Ckt1

Circuit Immediate Latch

All Ckt Running Modes [Service

Pumpdown]

The warmer of either the Evaporator Refrigerant Pool

Temperature or the Evaporator Saturated Temperature for the respective circuit, dropped below the Low Refrigerant Temperature Cutout

Setpoint for 2250F-sec (12F-sec/sec max rate

for early circuit startup period) while the circuit was

running. The minimum LERTC setpoint is -5F the

point at which oil separates from the refrigerant. The

integral is held nonvolatily though power down, is

continuously calculated, and can decay or build

during the circuit’s off cycle as conditions warrant

Remote

Low

Evaporator

Rfgt

Temperature -

Ckt2

Circuit Immediate Latch

All Ckt Running Modes [Service

Pumpdown]

The warmer of either the Evaporator Refrigerant Pool

Temperature or the Evaporator Saturated Temperature for the respective circuit, dropped below the Low Refrigerant Temperature Cutout

Setpoint for 2250F-sec (12F-sec/sec max rate

for early circuit startup period) while the circuit was

running. The minimum LERTC setpoint is -5F the

point at which oil separates from the refrigerant. The

integral is held nonvolatily though power down, is

continuously calculated, and can decay or build

during the circuit’s off cycle as conditions warrant.

Remote

Low

Evaporator

Temp (Unit Off)

– Ckt1

Evap Pump

Info and

Special Action

NonLatch

Unit in Stop

Mode, or in

Auto Mode and

No Ckt's

Energzd [Any

Ckt Energzd]

The respective circuit’s “Chiller Off Cycle Freeze

Protection Integral” was seen to be higher than ½ of

its trip value while the chiller is in the Stop mode, or

in Auto mode with no compressors running, for one minute and more. The COCFP integral is increased if the Average of the Evap Water Temperature and the Evap Refrigerant Pool Temp is below the value of the

Low Evap Rfgt Temp Cutout + 4°F. Energize Evap

Water Pump and Off-Cycle Freeze Avoidance Request

Relay until diagnostic auto resets, then return to

normal evap pump control and de-energize the

Freeze Avoidance Request. Automatic reset occurs

when the respective Evap Rfgt Pool Temp rises 2F

(1.1C) above the LERTC cutout setting and the

COCFP Integral is less than 1/3 of its trip value. This

diagnostic even while active, does not prevent

operation of either circuit. (At each circuit shutdown,

the COCFP integral is initialized to the LERTC

integral)

Remote

DDiiaaggnnoossttiiccss

Page 95

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Low

Evaporator

Temp (Unit Off)

– Ckt2

Evap Pump Special Action

NonLatch

Unit in Stop

Mode, or in

Auto Mode and

No Ckt's

Energzd [Any

Ckt Energzd]

The respective circuit’s “Chiller Off Cycle Freeze

Protection Integral” was seen to be higher than ½ of

its trip value while the chiller is in the Stop mode, or

in Auto mode with no compressors running, for one minute and more. The COCFP integral is increased if

the Average of the Evap Water Temperatures and the

Evap Refrigerant Pool Temp is below the value of the

Low Evap Rfgt Temp Cutout + 4°F. Energize Evap

Water Pump and Off-Cycle Freeze Avoidance Request

Relay until diagnostic auto resets, then return to

normal evap pump control and de-energize the Freeze Avoidance Request. Automatic reset occurs when the respective Evap Rfgt Pool Temp rises 2°F

(1.1°C) above the LERTC cutout setting AND the

COCFP Integral is less than 1/3 of its trip value. This

diagnostic even while active, does not prevent

operation of either circuit. (At each circuit shutdown,

the COCFP integral is initialized to the LERTC

integral)

Remote

Low

Evaporator

Water Temp

(Unit Off )

Evap Pump and

Freeze

Avoidance

Request Relay

Info and

Special Action

NonLatch

Unit in Stop

Mode, or in

Auto Mode and

No Ckt(s)

Energzd [Any

Ckt Energzd]

Either the entering or leaving evaporator water temp

fell below the leaving water temp cutout setting for

30 °F-seconds while the Chiller is in the Stop mode,

or in Auto mode with no compressors running. Energize Freeze Avoidance Request Relay and Evap Water Pump Relay until diagnostic auto resets, then

de-energize the Freeze Avoidance Request Relay and return to normal evap pump control. Automatic reset occurs when both temps rise 2F (1.1C) above the

cutout setting for 5 minutes, or either circuit starts.

This diagnostic even while active, does not prevent

operation of either circuit

Remote

Low

Evaporator

Water Temp:

Unit On

Chiller

Immediate Shutdown and Special Action

NonLatch

Any Ckt[s]

Energzd [No

Ckt(s)

Energzd]

The evaporator entering or leaving water temp fell

below the cutout setpoint for 30° F-seconds while the

compressor was running. Automatic reset occurs

when both of the temperature rises 2 F (1.1C)

above the cutout setting for 2 minutes. This

diagnostic shall not de-energize the Evaporator

Water Pump Output

Remote

Low Oil Flow -

Cprsr 1A

Circuit Immediate Latch

Cprsr

Energized and

Delta P above

15 Psid

The oil pressure transducer for this compressor was indicating an unacceptable oil pressure drop as a % of the available oil pressure to move oil, suggesting

significantly reduced oil flow to the compressor. Possible root causes include oil line service valve closed or restricted, dirty or restricted oil filter, or

compressor oil line kepner valve malfunction

Local

Low Oil Flow -

Cprsr2A

Circuit Immediate Latch

Cprsr

Energized and

Delta P above

15 Psid

The oil pressure transducer for this compressor was indicating an unacceptable oil pressure drop as a % of the available oil pressure to move oil, suggesting

significantly reduced oil flow to the compressor. Possible root causes include oil line service valve closed or restricted, dirty or restricted oil filter, or

compressor oil line kepner valve malfunction

Local

DDiiaaggnnoossttiiccss

Page 96

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Low Oil Return

or AFD Cooling

– Ckt1

Circuit Info NonLatch

All Ckt Running

Modes

The evaporator’s spillover tank refrigerant liquid

level, which feeds the oil return and drive cooling

heat exchanger, is seen to be less than 90% of its min level for 20 continuous minutes – reset when

level gets to 88% of min level. The occurrence of this

warning in conjunction with the “Loss of Oil (Running)” or any of the” AFD Over Temp” shutdown diagnostics, suggests either EXV problems or loss of

charge is a contributing factor

Low Oil Return

or AFD Cooling

– Ckt2

Circuit Info NonLatch

All Ckt Running

Modes

The evaporator’s spillover tank refrigerant liquid

level, which feeds the oil return and drive cooling heat exchanger, is seen to be less than 90% of its min level for 20 continuous minutes – reset when

level gets to 88% of min level. The occurrence of this

warning in conjunction with the “Loss of Oil

(Running)” or any of the” AFD Over Temperature”

shutdown diagnostics, suggests either EXV problems

or loss of charge is a contributing factor

Motor Winding Temp Sensor -

Cprsr1A

Circuit Info or None Latch All

Both of the motor winding temperature sensors are

seen to be out of their normal range. (Severity is

adjustable via TU Service Tool – default is Info)

Local

Motor Winding

Temp Sensor-

Cprsr2A

Circuit Info or None Latch All

Both of the motor winding temperature sensors are

seen to be out of their normal range. (Severity is

adjustable via TU Service Tool – default is Info)

Local

MP Application

Memory CRC

Error

Chiller Immediate Latch All Modes

Memory error criteria TBD

Remote

MP: Could not

Store Starts

and Hours

None Info Latch All

MP has determined there was an error with the

previous power down store. Starts and Hours may

have been lost for the last 24 hours

Remote

MP: Invalid

Configuration

None Immediate Latch All

MP has an invalid configuration based on the current

software installed

Remote

MP: Non-

Volatile

Memory

Reformat

None Info Latch All

MP has determined there was an error in a sector of

the Non-Volatile memory and it was reformatted.

Check settings

Remote

MP: Reset Has

Occurred

None Info NonLatch All

The main processor has successfully come out of a

reset and built its application. A reset may have been

due to a power up, or a power loss of a minimum or

longer duration to cause an MP power down reset, or

when installing new software or defining a new

configuration. This diagnostic is immediately and

automatically cleared and thus can only be seen in

the Historic Diagnostic List in TU

Remote

No Differential

Rfgt Pressure –

Ckt1

Circuit Immediate Latch

Compressor

running on

Circuit

The system differential pressure was below 7.7 Psid

(53 kPa) for 6 seconds after the 11 seconds ignore

time relative to cprsr/circuit startup had expired

Remote

No Differential

Rfgt Pressure –

Ckt2

Circuit Immediate Latch

Compressor

running on

Circuit

The system differential pressure was below 7.7 Psid

(53 kPa) for 6 seconds after the 11 seconds ignore

time relative to cprsr/circuit startup had expired

Remote

DDiiaaggnnoossttiiccss

Page 97

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Oil Analysis

Recommended

– Ckt1

Circuit Info Latch

“Service

Messages”

enabled

Diagnostic occurs when accumulated circuit

operating hours since last initialized exceeds 2000

hours. Diagnostic can be manually cleared but will

reoccur every month (720 hours on real time clock)

as long as accumulator is not re-initialized

Remote

Oil Analysis

Recommended

– Ckt2

Circuit Info Latch

“Service

Messages”

enabled

Diagnostic occurs when accumulated circuit

operating hours since last initialized exceeds 2000

hours. Diagnostic can be manually cleared but will

reoccur every month (720 hours on real time clock)

as long as accumulator is not re-initialized

Remote

Oil Filter

Change

Recommended

– Cprsr1A

Circuit Info Latch

“Service

Messages”

enabled

Diagnostic occurs only when “service messages” are

enabled and when average oil pressure drop exceeds

18%. Diagnostic can be manually cleared but will

reoccur every month (720 hours on real time clock)

as long as average pressure drop does not fall below

16%

Remote

Oil Filter

Change

Recommended

– Cprsr2A

Circuit Info Latch

“Service

Messages”

enabled

Diagnostic occurs only when “service messages” are

enabled and when average oil pressure drop exceeds

18%. Diagnostic can be manually cleared but will

reoccur every month (720 hours on real time clock)

as long as average pressure drop does not fall below

16%

Remote

Oil Flow

Protection

Fault – Ck 1

Circuit Immediate Latch

Starter

Contactor

Energized [all

Stop modes]

The Intermediate Oil Pressure Transducer for this

cprsr is reading a pressure either above its respective

circuit’s Condenser Pressure by 15 Psia or more, or

below its respective Suction Pressure 10 Psia or more

for 30 seconds continuously

Local

Oil Flow

Protection

Fault – Ckt2

Circuit Immediate Latch

Starter

Contactor

Energized [all

Stop modes]

The Intermediate Oil Pressure Transducer for this

cprsr is reading a pressure either above its respective

circuit’s Condenser Pressure by 15 Psia or more, or

below its respective Suction Pressure 10 Psia or more

for 30 seconds continuously

Local

Oil Pressure

Transducer –

Cprsr1A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Oil Pressure

Transducer –

Cprsr2A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Outdoor Air

Temperature

Sensor

Chiller

Normal

Shutdown;

Latch All

Bad Sensor or LLID. If this diagnostic occurs,

operational pumpdown will be performed regardless

of the last valid temperature

Remote

Pumpdown

Terminated -

Ckt1

Circuit Info NonLatch

Service

Pumpdown

Service Pumpdown cycle for this circuit was

terminated abnormally due to excessive time.(RTAE

max Service Pumpdown = 4 min)

Local

Pumpdown

Terminated -

Ckt2

Circuit Info NonLatch

Service

Pumpdown

Service Pumpdown cycle for this circuit was

terminated abnormally due to excessive. (RTAE max

Service Pumpdown = 4 min)

Local

Software Error

1001: Call

Trane Service

All functions Immediate Latch All

A high level software watchdog has detected a

condition in which there was a continuous 1 minute

period of compressor operation, with neither

Evaporator water flow nor a” contactor interrupt

failure” diagnostic active. The presence of this

software error message suggests an internal

software problem has been detected. The events

that led up to this failure, if known, should be

recorded and transmitted to Trane Controls

Engineering

Local

DDiiaaggnnoossttiiccss

Page 98

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Software Error

1002: Call

Trane Service

All functions Immediate Latch All

Reported if state chart misalignment in stopped or

inactive state occurred while a compressor was seen

to be operating and this condition lasted for at least 1

minute (cmprsr operation due to Service Pumpdown

or with Contactor Interrupt Failure diagnostic is

excluded). The presence of this software error message suggests an internal software problem has been detected. The events that led up to this failure,

if known, should be recorded and transmitted to

Trane Controls Engineering

Local

Software Error

1003: Call

Trane Service

All functions Immediate Latch All

Reported if state chart misalignment occurred

inferred from either Capacity Control, Circuit, or

Compressor State Machines remaining in the Stopping state for more than 3 minutes. The

presence of this software error message suggests an

internal software problem has been detected. The

events that led up to this failure, if known, should be

recorded and transmitted to Trane Controls

Engineering

Local

Starts or Hours

Modified –

Cprsr1A

None Info NonLatch All

The current value for the cumulative starts and or

hours for the given compressor have been modified

by a write override from TU

Starts or Hours

Modified –

Cprsr2A

None Info NonLatch All

The current value for the cumulative starts and or

hours for the given compressor have been modified

by a write override from TU

Suction Rfgt

Pressure

Transducer –

Cprsr1A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Suction Rfgt

Pressure

Transducer –

Cprsr2A

Circuit Immediate Latch All Bad Sensor or LLID Remote

Unexpected Shutdown –

AFD1A

Circuit Normal Nonlatch

All Cprsr

Running

modes,

Starting,

Running and

Preparing to

Shutdown

The respective AFD status reported back that it is

stopped when the MP thinks it should be running and

no AFD shutdown diagnostic exists. This diagnostic

will be logged in the active buffer and then

automatically cleared. This diagnostic could be

caused by intermittent communication problems

from the AFD to the MP, or due to misbinding

Remote

Unexpected Shutdown –

AFD2A

Circuit Normal Nonlatch

All Cprsr

Running

modes,

Starting,

Running and

Preparing to

Shutdown

The respective AFD status reported back that it is

stopped when the MP thinks it should be running and

no AFD shutdown diagnostic exists. This diagnostic

will be logged in the active buffer and then

automatically cleared. This diagnostic could be

caused by intermittent communication problems

from the AFD to the MP, or due to misbinding

Remote

DDiiaaggnnoossttiiccss

Page 99

AC-SVX001A-EN

Table 27. Diagnostics — main processor (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Very Low

Evaporator

Rfgt Pressure –

Ckt1

Chiller Immediate Latch All

The respective circuit’s evaporator pressure dropped

below 80% of the current Low Evap Refrig Press

Cutout setting (see above) or 8 psia, whichever is

less, regardless of the running state of the circuit’s

compressor. Note: Unlike previous products, even if

the circuit associated with the suction pressure

transducer is locked out, it will not defeat the

protection afforded by this diagnostic

Local

Very Low

Evaporator

Rfgt Pressure –

Ckt2

Chiller Immediate Latch All

The respective circuit’s evaporator pressure dropped

below 80% of the current Low Evap Refrig Press

Cutout setting (see above) or 8 psia, whichever is

less, regardless of the running state of the circuit’s

compressor. Note: Unlike previous products, even if

the circuit associated with the suction pressure

transducer is locked out, it will not defeat the

protection afforded by this diagnostic

Local

Communication Diagnostics

NNootteess::

1. The following communication loss diagnostics will not occur unless that input or output is required to be present by the particular configuration and installed options for the chiller.

2. Communication diagnostics (with the exception of “Excessive Loss of Comm” ) are named by the Functional Name of the input or output that is no longer being heard from by the Main Processor. Many LLIDs, such as the Quad Relay LLID, have more than one functional output associated with it. A comm loss with such a multiple function board, will generate multiple diagnostics. Refer to the chiller's wiring diagrams to relate the occurrence of multiple communication diagnostics back to the physical LLID boards that they have been assigned to (bound).

Table 28. Diagnostics — communication

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Comm Loss:

AFD 1A

Circuit Immediate NonLatch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

AFD 2A

Circuit Immediate NonLatch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Chiller %

Capacity

Output

None Info Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

DDiiaaggnnoossttiiccss

Page 100

100

AC-SVX001A-EN

Table 28. Diagnostics — communication (continued)

Diagnostic

Name

Affects

Target

Severity

Persistence

Active

Modes

[Inactive

Modes]

Criteria

Reset

Level

Comm Loss:

Cond Fan

Enable Shared

Ckt1&2

None Info Latch All

Continual loss of communication between the MP and

the Functional ID has occurred for a 30 second period. This is an info warning, as it is conceivable that the circuit may run without the center shared

fan deck working if there are many other coils/fans

on the circuits

Remote

Comm Loss:

Cond Rfgt

Pressure Ckt1

Circuit Immediate Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Cond Rfgt

Pressure Ckt2

Circuit Immediate Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Condenser Fan

Enable Ckt1

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Condenser Fan

Enable Ckt2

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Discharge

Temperature

Ckt1

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Discharge

Temperature

Ckt2

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Drive Cooling

BP Valve Ckt1

Circuit Normal Latch All

Continual loss of communication between the MP and

the Functional ID has occurred for a 30 second

period. Note: The same diagnostic is used for comm

loss with the stepper motor driven bypass valve in

the Drive Cooling Temp Control = DCTC or DCTW

configurations as for comm loss with the “Drive

Cooling 3-Way Valve Command Outputs Ckt1 &2”

dual analog I/O llid in the TWAV configuration

Remote

Comm Loss:

Drive Cooling

BP Valve Ckt2

Circuit Normal Latch All

Continual loss of communication between the MP and

the Functional ID has occurred for a 30 second

period. Note: The same diagnostic is used for comm

loss with the stepper motor driven bypass valve in

the Drive Cooling Temp Control = DCTC or DCTW

configurations as for comm loss with the “Drive

Cooling 3-Way Valve Command Outputs Ckt1 &2”

dual analog I/O llid in the TWAV configuration

Remote

Comm Loss:

Drive Cooling

IL Valve Ckt1

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Drive Cooling

IL Valve Ckt2

Circuit Normal Latch All

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period

Remote

Comm Loss:

Drive Cooling

Sply Temp Ckt1

Circuit Norma Latch All

Continual loss of communication between the MP and

the Functional ID has occurred for a 30 second

period. While this diagnostic is active, the associated

Drive Cooling ByPass Valve shall be commanded fully

closed

Remote

DDiiaaggnnoossttiiccss