owner manual - trane

UCM-CLDChiller Control System

OwnerManual

RLC-SVU02F-E4

© 2009 Trane

General information

RLC-SVU02F-E4

ForewordThese instructions are given as aguide to the operation of thecontroller(s) mounted on TraneRTAD/RTWB/RTRA chillers. They donot contain full service proceduresnecessary for the continuedsuccessful operation of thisequipment. The services of a qualifiedtechnician should be employedthrough the medium of amaintenance contract with areputable service company. Readthis manual thoroughly before unitstart-up.

Warnings and cautionsWarnings and Cautions appear atappropriate sections throughout thismanual. Your personal safety and theproper operation of this machinerequire that you follow themcarefully. The constructor assumes noliability for installations or servicingperformed by unqualified personnel.

WARNING! : Indicates a potentiallyhazardous situation which, if notavoided, could result in death orserious injury.

CAUTION! : Indicates a potentiallyhazardous situation which, if notavoided, may result in minor ormoderate injury. It may also beused to alert against unsafepractices or for equipment orproperty-damage-only accidents.

Safety recommendationsTo avoid death, injury, equipment orproperty damage, the followingrecommendations should beobserved during maintenance andservice visits:

1. The maximum allowable pressuresfor system leak testing on low andhigh pressure side are given in thechapter "Installation". Always providea pressure regulator.

2. Disconnect the main power supplybefore any servicing on the unit.

3. Service work on the refrigerationsystem and the electrical system

should be carried out only byqualified and experienced personnel.

Reception

On arrival, inspect the unit beforesigning the delivery note.

Reception in France only:

In case of visible damage: Theconsignee (or the site representative)must specify any damage on thedelivery note, legibly sign and datethe delivery note, and the truck drivermust countersign it. The consignee(or the site representative) mustnotify Trane Epinal Operations -Claims team and send a copy of thedelivery note. The customer (or thesite representative) should send aregistered letter to the last carrierwithin 3 days of delivery.Note: for deliveries in France, evenconcealed damage must be lookedfor at delivery and immediatelytreated as visible damage.

Reception in all countries except

France:

In case of concealed damage: Theconsignee (or the site representative)must send a registered letter to thelast carrier within 7 days of delivery,claiming for the described damage.A copy of this letter must be sent toTrane Epinal Operations - Claimsteam.

WarrantyWarranty is based on the generalterms and conditions of themanufacturer. The warranty is void ifthe equipment is repaired ormodified without the writtenapproval of the manufacturer, if theoperating limits are exceeded or ifthe control system or the electricalwiring is modified. Damage due tomisuse, lack of maintenance orfailure to comply with themanufacturer's instructions orrecommendations is not covered bythe warranty obligation. If the userdoes not conform to the rules of thismanual, it may entail cancellation ofwarranty and liabilities by themanufacturer.

Maintenance contractIt is strongly recommended that yousign a maintenance contract withyour local Service Agency. Thiscontract provides regularmaintenance of your installation by aspecialist in our equipment. Regularmaintenance ensures that anymalfunction is detected and correctedin good time and minimizes thepossibility that serious damage willoccur. Finally, regular maintenanceensures the maximum operating lifeof your equipment. We would remindyou that failure to respect theseinstallation and maintenanceinstructions may result in immediatecancellation of the warranty.

TrainingTo assist you in obtaining the bestuse of it and maintaining it in perfectoperating condition over a longperiod of time, the manufacturer hasat your disposal a refrigeration andair conditioning service school. Theprincipal aim of this is to giveoperators and technicians a betterknowledge of the equipment they areusing, or that is under their charge.Emphasis is particularly given to theimportance of periodic checks on theunit operating parameters as well ason preventive maintenance, whichreduces the cost of owning the unitby avoiding serious and costlybreakdown.

Contents

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General Information 2

Principles of operation

of the UCM-CLD module 4

General Information 4

Operator’s Interface 5

Operational Features 9

Diagnostics 16

Diagnostics 16

Default Description 17

Controller for hydraulic module/ free cooling / heat recovery / RTWB heat pump applications 22

Hydraulic module control 23

Control logic 23

Module and outputs/inputs 24

Hydraulic module option 25

Data display menu 26

Configuration menu 27

Alarms messages - hydraulic module application 30

Mask and menu chart 31

Free cooling application 32

Heat recovery application 38

RTWB heat pump application 40

Principles of Operation of theModule UCM-CLD

RLC-SVU02F-E44

General InformationThis UCM-CLD chiller control iscomposed of eight electronicmodules, which each have theirown 115V or 24V power supply andcommunicate with each other via aserial link. The names of themodules are linked to theirfunctions.

Figure 1 : Operator’s interface

CompressorReport

RefrigerantReport

ChillerReport

CustomReport

Select Report Group

DiagnosticsServiceTests

ServiceSettings

OperatorSettings

Alarm

AutoEnterPrevious

StopCancelNext

Select Setting Group

ADAPTIVE CONTROL™

Module Functions

MCSP (Motor Compressor Start and Protection)

CPM (Chiller Protection and Management) Safety, protection, and control of the chillerEXV (Electronic Expansion Valves) Control of both electronic expansion valvesCSR (Communication and Setpoint Reset) ,

Local CLD (Local Clear Language Display) Operator interface located in the front panel of the unitRemote CLD (Remote Clear Language Display)

TCI IV, COM 3 (Tracer Communication Interface 4, COM 3)

Safety, protection, and control of the helical-rotary compressor and its components

Control of the serial communication, unit external setpoints and ice-making mode (optional module)

Operator interface located up to 1500m from the unit, able tocommunicate with up to four units of the same type (optional module)

TCI IV, IPCB (Tracer Communication Interface 4, Inter ProcessorCommunication Buffer)

Protection of the internal communication bus in the unit from externalinterferences (optional factory-mounted module, compulsory whenusing a Remote CLD)

Interface between the control of the unit and a Building ManagementSystem using Trane COMM 3 serial link


5RLC-SVU02F-E4

Operator's Interface

Digital Display

The display of control regulation andoperating parameters, diagnostics,and error messages is a 2-line, 40-character, liquid-crystal display. Thedisplay has a LED backlight to readin low-light conditions and to warmup the display under low ambienttemperatures. When powering upthe system, the display is not lit andthe message [SELF-TEST INPROGRESS] is displayed. The screencan display error codes, settings ofvarious setpoints, specifiedtemperature and pressure values,and the status of operatingparameters and options.

Keyboard

A 16-key touchpad allows bothnavigation between menus and themodification of parameters andsetpoints. The keys are divided intotwo groups:

Individual Menu Keys Control Keys

Chiller Report Menu + keyCustom Report Menu - keyRefrigerant Menu Previous keyCompressor Menu Next keyOperator Settings Menu Enter keyService Settings Menu* Cancel keyService Test Menu* Auto keyDiagnostics Menu Stop key

* Levels 2 and 3 of the Service Settings Menu and the Service Test Menu are protected by apassword and are reserved for Trane Service Engineers.

Figure 2 : Control panel mounted on a model RTWA unit


RLC-SVU02F-E46

Control Key Functions

[+] key If the information displayedis read-only, pressing this key willadd it to the operator's menu. If theinformation can be modified,pressing this key will increase thevalue without exceeding themaximum possible value.

[-] key If the information displayedis read-only, pressing this key willremove it from the operator's menu.If the information can be modified,pressing this key will decrease thevalue without exceeding theminimum possible value.

[Previous] key Pressing this keyallows the operator to scroll up tothe previous information in thecurrent menu. Each menu islooped, making it possible to scrollfrom the first item in the menu tothe last item.

[Next] key Pressing this key allowsthe operator to scroll down to thenext information in the currentmenu. Each menu is looped, makingit possible to scroll from the last itemin the menu to the first item.

[Enter] key Pressing this key allowsthe operator to validate a value aftermodification.

[Cancel] keyThis key should bepressed if a modified setting shouldnot be saved.

[Auto key] Pressing this key allowsthe unit to be in Auto mode if it waspreviously placed in Stop modewith the [Stop] key. The unit cannotbe forced into Auto mode if anexternal contact or the serial linkhas stopped it. When the unit isstopped by the remote interface(Remote CLD), the local mode orderhas priority.

[Stop] key Pressing this key allowsthe unit to be in Stop mode. Inevery case, and whatever the origin(except a local stop), the stop orderand stop status have priority over arun order. The stop generated is asoft stop - the unit unloads beforestopping.

Whether a [Stop] or [Auto]command will be accepted andstored is based on the followinghierarchy:1. Local Stop will always replace

Local Auto, Remote Auto, andRemote Stop.

2. Local Auto will always replaceLocal Stop, Remote Auto, andRemote Stop.

3. Remote Stop will always replaceLocal Auto and Remote Auto. Itwill not replace Local Stop.

4. Remote Auto will always replaceLocal Auto and Remote Stop. Itwill not replace Local Stop.

Pressing the [Stop] key twice withinfive seconds will result in anEmergency Stop. The chiller will notunload.

Principles of Operation ofthe Module UCM-CLD

7RLC-SVU02F-E4

Parameters and setpoints within each menu

Menu Parameters/setpoints RangeMinimum/Maximum

Chiller Report Menu Active Chilled Water SetpointEvaporator Entering/ Leaving Chilled Water TemperatureCondenser Entering / Leaving Chilled Water TemperatureActive Ice-Storing SetpointActive Hot Water SetpointEntering/Leaving Hot Water TemperatureCurrent Active Setpoint limits -17.8°/18.3°CEvaporator/Condenser WaterflowAmbient Air TemperatureSources of setpoints (Tracer, local CLD, external)

Custom Report Menu Custom-built by the operator (Can contain up to 20 settings)Refrigerant Report Menu Condenser/Evaporator Refrigerant Pressures

Refrigerant Temperature in CondenserRefrigerant Temperature in Evaporator

Compressor Report Menu Compressor StatusTime and Start CountersAmps (% RLA)Oil Temperature (GP compressor only)

Operator Settings Menu Setpoint SourceExternal Chilled Water SetpointExternal Hot Water SetpointChilled Water Pump OperationChilled Water Pump Off Delay 1 min/30 minIce Machine Control*Panel Ice Termination Setpoint -6.6°/-0.5°CLow Ambient LockoutLow Ambient Lockout Setpoint -28.8°/15.5°CFront Panel Current Limit Setpoint 40%/120%Front Panel Hot Water Setpoint 25°/60°CFront Panel Chilled Water Setpoint -17.8°/18.3°CDesign Delta Temperature Setpoint 2.2°/16.6°CExternal Current Limit SetpointDifferential to Start Setpoint 1.1°/16.6°CChilled Water Reset TypeType Reset RatioType Start Reset SetpointType Max Reset Setpoint 0.0°/11.1°C


RLC-SVU02F-E48

Service Settings Menu** LEVEL ONE-Information adjusted by customer

Unit Line VoltageOver/Undervoltage ProtectionRestart Inhibit Time 30/120 secBalanced Compressor Starts and HoursDisplay Language and UnitsProgrammable Relay Set-up 1/12External Circuit LockoutLEVEL TWO- Information adjusted by Service Engineer

Address of Serial Link 0/64Display Lock FeatureLeaving Water Temperature SetpointLow Refrigerant Temperature Cutout SetpointLow Water Temperature EXV Air CompressorCondenser Limit Setpoint 60/120%Phase Unbalance ProtectionPhase Reversal ProtectionSuperheat Setpoint 2.2°/11.1°CEXV Control Response Circuit 1 2/200EXV Control Response Circuit 2 2/200Leaving Water Temperature Control Response SetpointFan Control Deadband bias Circuit 1 -50/50Fan Control Deadband bias Circuit 2 -50/50LEVEL THREE-Configuration/Protection Information

Compressor Model Number PrefixNumber of CompressorsOil Loss Differential SetpointCompressor A TonCompressor B TonCompressor C TonCompressor D TonFan ControlVariable Speed Fan Circuit 1Variable Speed Fan Circuit 2Number of Fans Circuit 1Number of Fans Circuit 2Reduced Inrush StartingCurrent Overload Compressor ACurrent Overload Compressor BCurrent Overload Compressor C Current Overload Compressor DLow Ambient Unit Half Air Flow FanLow Ambient Unit Two-Speed MotorNight Noise SetbackNumber of EXV Circuit 1Number of EXV Circuit 2Refrigerant Type

Service Tests Menu Perform Expansion Valve TestPerform Circuit locking or Pump-out TestPerform Compressor Test

Diagnostics Menu Current Diagnostics History of DiagnosticsManual Reset of DiagnosticsErase History of Diagnostics

* Option** This menu has three access levels. The control has a display lock feature that can be locked at request after level one.


9RLC-SVU02F-E4

Operational features

Entering evaporator watertemperature

When one or both compressors arerunning, the UCM continuallymonitors and compares theentering and leaving evaporator-water temperatures. If thetemperature of the entering waterdrops more than 1°C below theleaving water temperature for morethan 55°C- seconds, the UCM uses this toindicate a loss of water flowthrough the evaporator. This willshut down that circuit's compressorand will display MMR diagnostic.

Current Limit Setpoint (CLS)

The current limit setpoints for thesystem are entered through theClear Language Display menus. Thecurrent limit Setpoint for eachcompressor is shown in Table 1.

Table 1 – Compressor current limitSetpoint versus Chiller currentlimit Setpoint

SystemCLS One Two

120% 120 120100% 120 10080% 120 8060% 120 6040% 80 40

Based upon current levels receivedat the UCM, the compressor slidevalve is modulated to prevent theactual chiller current fromexceeding the CLS.

When a compressor is turned off,the CLS for the remaining runningcompressor shall be reset upwardimmediately. When a compressor isadded, the CLS for the runningcompressor shall be rampeddownward at a rate not less than10% RLA per minute to the newSetpoint.

Numbers of compressor inoperation

Electronic expansion valve(EXV) test

This test can be performed only whenthe “Stop“ key has been pressed. Itwill confirm proper operation of theelectronic expansion valve and theEXV module.

After the test has been initiated atthe Clear Language Display, theUCM will:

1. Overdrive the EXV closed(25 seconds)

2. Overdrive the EXV open(25 seconds)

3. Overdrive the EXV closed(25 seconds)

4. Reset the display to disable andend the test

The EXV produces an audibleclicking sound when it is drivenagainst its end stops. Step 1 drivesthe EXV to its closed position,during which time service personnelcan move from the CLD to the EXV.

Note: A tool may be needed to aidin hearing the clicking of the EXV,such as a screwdriver held betweenthe EXV and the ear.

Current overload protection

The UCM continually monitorscompressor current to provide unitprotection in the event of anovercurrent or locked-rotorcondition. Protection is based onthe phase with the highest currentand, if limits are exceeded, the UCMwill shut down the compressor andwill display an MMR diagnostic.

Leaving chilled-water temperaturecontrol

If the Auto key is pressed and aremote chilled-water Setpoint hasbeen communicated, the UCM willcontrol to that Setpoint. Otherwise,it will control to the front-panelSetpoint. Control is accomplishedboth by staging compressors andby modulating the slide valves oneach compressor.

Upon start-up, if the leaving chilled-water temperature is dropping 0.8°Cper minute or faster, the chiller willnot load further.


RLC-SVU02F-E410

Chilled-Water Reset (CWR)

As an option, the UCM will reset thechilled-water temperature setpoint,based on either the return watertemperature or the outdoor airtemperature. The CSR module isnecessary to perform CWR.

The following are selectable:

One of four reset types, from top tobottom in order of reset:

no CWR

RETURN WATER TEMPERATURERESET

ZONE TEMPERATURE RESET

OUTDOOR AIR TEMPERATURERESET

Leaving-water temperature cutout

This temperature cutout providesprotection against freezing causedby low leaving-water temperature.The setpoint is both factory-set andadjustable from the Service SettingMenu. Temperatures below thesetpoint will cause the UCM toaccelerate reduction of chillercapacity, even to the point ofcompressor shutdown. A non-latching diagnostic will begenerated if the LWT is below thecutout for more than 16°C-seconds.

There must be a minimum of 2.7°Cbetween the cutout temperatureand both the front-panel and active-chilled-water setpoints. The ClearLanguage Display will not permitsetting of either the front-panel oractive-chilled-water temperaturesless than 2.7°C above the cutouttemperature. The second line willstate:

Limited by Cutout Setpoint (+)to change

If the leaving-water temperaturecutout is set upward, the ClearLanguage Display will maintain the2.7°C minimum and willautomatically raise the settings onthe front-panel and active-chilled-water setpoints, if necessary.

If the front-panel or active-chilled-water setpoints were adjusted, thedisplay will show the followingwhen the “enter“ key is pressed:

FRONT PANEL CHILLED WATERSETPOINT HAS BEEN

INCREMENTED DUE TO CUTOUTSETPOINT CHANGE

If the leaving-water temperaturedrops below the cutout setpointwhile the compressors are de-energized, it will produce an IFWdiagnostic. If the leaving-watertemperature drops below the cutoutsetpoint while the compressors areenergized for 16°C-seconds, the unitwill shut down on an MARdiagnostic.


11RLC-SVU02F-E4

Low refrigerant temperature cutout

Both circuits are protected from asaturated-evaporator refrigeranttemperature that goes below thissetting. The cutout Setpoint must beat a minimum of 8°C lower than thefront panel or active chilled-watersetpoints. See Table 2 for propersettings.

There must be a minimum of 8°Cbetween the cutout temperatureand active chilled-water setpoints.The Clear Language Display will notpermit setting of the chilled-watertemperature less than 8°C abovethis cutout temperature, and thedisplay will flash the last validtemperature.

If the leaving-water temperaturecutout is set upward, the ClearLanguage Display will maintain the8°C minimum and will raise thesettings of the chilled-watersetpoints, if necessary.

If the chilled-water setpoints wereadjusted, the display will show thefollowing when the “Enter“ key ispressed:

FRONT PANEL CHILLED WATERSETPOINT HAS BEEN

INCREMENTED DUE TO CUTOUTSETPOINT CHANGE

If the saturated-evaporatorrefrigerant temperature for a circuitdrops below this Setpoint for longerthan 16°C-seconds, the circuit willbe shut down and a CMR diagnosticwill be displayed.

Table 2 – Leaving fluid temperature setpoints

°C °C °C % °C5 1.5 -3.9 0 04 1 -4.4 10 -43 0 -5.4 13 -52 -1 -6.4 16 -71 -2 -7.4 18 -80 -3 -8.4 20 -9

-1 -4 -9.4 22 -10-2 -5 -10.4 24 -11-3 -6 -11.4 26 -13-4 -7 -12.4 27 -13-5 -8 -13.4 29 -15-6 -9 -14.4 31 -16-7 -10 -15.4 32 -17-8 -11 -16.4 33 -18-9 -12 -17.4 34 -19

-10 -13 -18.4 36 -20-11 -14 -19.4 36 -20-12 -15 -20.4 37 -21

Leavingchilled-watertemperature

Leaving-watertemperature

cutout

Low refrigeranttemperature

cutoutRecommended

%EG

Solutionfreezepoint


RLC-SVU02F-E412

Balanced compressor startsand hours

This feature is enabled/disabled inbalanced starts and hours (servicesetting menu). When enabled, theUCM will start the compressor withthe fewest starts and stop thecompressor with the greatest numberof operating hours, as determined bythe “compressor starts“ accumulatorand the “compressor hours“accumulator. This will tend to balanceout hours and starts equally over bothcompressors.

Phase imbalance protection

The Clear Language Displaymonitors the current in each phaseand calculates the percentage ofimbalance as follows:

% imbalance = (Ix - I average)I average

I average = (I1 + I2 + I3) / 3

Ix = phase with greatest differencefrom I average (without regardto sign).

If phase-unbalanced protection(service setting menu) is enabledand the average three-phase currentis greater than 80% RLA, and thepercent of imbalance is calculatedto exceed 15%, the UCM will shutdown the compressor and display aCMR diagnostic.

Reverse rotation protection

The Clear Language Displaymonitors incoming current duringstart-up and will shut down thecompressor within one second ifphase reversal is detected.

CCAAUUTTIIOONN

Phase relationship during

installation of unit power must be

carefully controlled to ensure

compressor protection against

reversed rotation.

Oil failure protection

The logic of the UCM uses acomparison of the entering oiltemperature at the compressor, tothe saturated-condensertemperature, to determine if there isan oil line restriction.

The differential between theentering-oil and the saturated-condenser temperatures is referredto as the “oil loss differentialsetpoint“ in the service settingsmenu.

If the entering oil temperature drops2°C below the saturated-condensertemperature for more than30 minutes, the circuit will shutdown on a CMR diagnostic. Thediagnostic will be presented as:

OIL SYSTEM FAULT - CKT X

DIP switch settingsCompressor overload DIP switches.

IPC address

The IPC address sets the address for Inter-Processor Communications of theClear Language Display modules. The following are the IPC DIP switchsettings for the modules.

ModuleIPC DIP A20-1 A20-2 A52 A9Switch SW1 SW2 SW1 SW2 SW1 SW1

1 OFF Based OFF Based OFF OFF2 OFF On OFF On OFF OFF3 Motor Motor4 RLA RLA5


13RLC-SVU02F-E4

2-10 V (dc)/4-20 mA input for ExternalChilled-Water Setpoint (CWS) orCurrent limit Setpoint (CLS)

When either external CWS orexternal CLS is used on the optionalmodule A9, DIP switch SW1positions 1 and/or 2 must be set toaccommodate the type of of signalsource the customer has chosen,either 2-10 V (dc) or 4-20 mA.Position SW1-1 sets 2-10 V (dc)/4-20 mA for external CLS. The “OFF“setting configures the external inputfor 2-10 V (dc)/4-20 mA for externalCLS. The “OFF“ setting configuresthe external input for 2-10V (dc), the“ON“ setting configures theexternal input for 4-20 mA.

Leaving Condenser-WaterTemperature control option -Model RTWB

If the machine is delivered with theLCWT control option (digit 49position 3), the DIP switch on themodule A9 must be set at position“ON.“ This option controls thecondenser (CDS) leaving-watertemperature (LCWT) based on a HotWater Temperature setpoint (HWSP).

Mechanical control settings

The settings for the High Pressure switch are shown below:

Pressure Switch Approval Close OpenB51 PED 19-20 bar 22-23 barHigh Pressure Czech republic

PolandB23 PED 1.5 bar 0.5 barLow Pressure Czech republic

Poland-4°C<LWTE<+15°C

B23 PED 1.2 bar 0.2 barLow Pressure Czech republic

Poland-12°C<LWTE<-4°C

Figure 3 - Water Temperature Sensor Installation - Model RTWB

CompressionFitting

Clamping Nut

Fitting Body

1/2" NPT x 1-1/2" Large Coupling

Limitations

In the heating mode, the chiller isnot able to provide chilled water fora process. The leaving chilled-watertemperature is not controlled. TheUCM will only take care of safeties(water flow and freezing).

The option will provide contact tostart/stop the evaporator and thecondenser pumps. Any other devicessuch as valves (2 ways/3 ways), heatexchangers, variable-volume pumps,or other equipment will have to becontrolled by another system.

Condenser Water TemperatureSensors - RTAD Total and PartialHeat Recovery

UCM-CLD will not display leavingand entering water temperatureabove 70.1°C, whereas on Total HeatRecovery units, the temperature onthe additional controller could behigher. These conditions wouldappear in cooling mode only. This isnot harmful to the operation of thechiller.

Principles of Operation of

the Module UCM-CLD

RLC-SVU02F-E414

Hot-Water Mode ControlModule - Option ModelRTWB

Scope of Supply

The following parts will be installedin the control panel of the unit:

• One Additional Board A70 withdisplay

• One CDS LWT sensor + immersionwell to be installed by the customer

The sensor will be connected toterminals B3 and GND on terminalblock J2 of the A70 module.

Sequence of Operation

• Cooling Mode

The unit will operate as a standardchiller (i.e., the chiller controls theleaving chilled-water temperature).The condenser pump will be drivenby the UCM relay. The chiller usesthe cooling setpoint defined in theA70 Module.

• Heating Mode

In the heating mode, the chiller willcontrol the condenser leaving-watertemperature. The temperature sensorconnected to the A70 Module shouldbe located in the condenser leaving-water connection downstream fromthe condenser. The control is done byloading or unloading the chiller. Toload or unload the chiller, a chilled-water setpoint reset is applied (i.e.,setpoint decrease = load; setpointincrease = unload). The condenserpump is always in operation. Theevaporator pump is still controlled bythe UCM and is always in operation.The chiller uses the heating setpointdefined in the A70 Module.

The chiller will be stopped if thecondenser leaving-watertemperature is greater than thesetpoint + the “differential to stop”.The chiller will start if the condenserleaving-water temperature is lowerthan the setpoint - the “differentialto start”.

• Sensor Failure

In the heating mode, and if the CDSleaving-water temperature sensorfails, the chiller is stopped and thealarm relay of the A70 Module isenergized. The chiller can operate inthe cooling mode if the CDSleaving-water temperature sensorhas failed.

A70 Module and UCM interaction

Chilled-Water setpoint: The A70Module drives the chilled-watersetpoint using a linear signal froman Analog Output of the A70Module to the external chilled-watersetpoint input of the UCM.

Chiller Enable/Disable: The A70Module drives the chiller (on or off)using a dry contact from the A70Module to the external start/stopinput of the UCM.

CDS pump relay: The A70 Moduledrives the condenser pump relay.

In heating mode, the chiller controlsthe condenser leaving-watertemperature. The A70 Heat PumpModule sends an external chilled-water setpoint to the UCM. Thisanalog signal (factory set at 4-20mA) is constantly reset to matchthe heating load.

• Setpoint decreases load thechiller

• Setpoint increases unload thechiller

Note that the UCM still operates asa chilled-water controller.

On the UCM-CLD, the parameter“External Chilled Water setpoint”has to be enabled.

Principles of Operation of

the Module UCM-CLD

15RLC-SVU02F-E4

Local/ External unit control mode

From the Settings menu, the enduser can select the Control mode.

- Control Mode: No

In this case, the active cool and heatsetpoints and Heat/Cool selectionwill come from the front panel (UserSettings 1).

- Control Mode: Partial

In this case, the active cool and heatsetpoints will come from the frontpanel (User Settings 1). The activeHeat/Cool selection will come fromthe external Cool/Heat input.

- Control Mode: Full

In this case, the active cool and heatsetpoints and Heat/Cool selectionwill come from the external analogand digital inputs.

- AI: External cooling setpoint input(configurable)

This input will be powered in 0-1Vor 4..20mA. The configuration(available from menu “User Settings 2) will allowed 0-1V or4..20mA signals. This signal willcreate a cooling setpoint between -17.8°C and 18.3°C.

Note: The A70 module will scaleautomatically the value between -12°C and 15°C.

Note: The input configuration mustbe done before any signalconnection.

Refer to Table 4 for the setting rule.

- AI: External heating setpoint input(configurable)

This input will be powered in 0-1Vor 4..20mA. The configuration willallowed 0-1V or 4..20mA signals.This signal will create a heatingsetpoint between 25°C and 60°C.

Note: The input configuration mustbe done before any signalconnection.

Refer to Table 3 for the setting rule.

- DI: External ON/OFF input

This input will be normally poweredin 24Vac. This input will be theexternal Auto/Off unit.

0V "Open" : unit disabled

24Vac "Close" : unit enabled

- DI: External Heat/Cool input(configurable)

This input will be normally poweredin 24Vac. This input will be theexternal Heat/Cool mode switch.

0V "Open" : Cooling mode

24Vac "Close" : Heating mode

Table 4 - Input values vs. External chilled-water setpoint

3.6 7.2 -104.6 9.2 -55.6 11.3 06.7 13.3 57.7 15.4 10

Resulting hot-waterset point

(°C)Voltage(V(dc))

Current(mA)

Diagnostics

RLC-SVU02F-E416

When a circuit shutdown - manualreset (CMR) or a machine shutdown- manual reset (MMR) occurs, thered LED to the right of the displaywill flash. Otherwise this alarm LEDis de-energized.

If there are no diagnostic messages,the selected menu item will bedisplayed continuously. If thediagnostics key is pressed and thereare no active diagnostics, thereadout on the display will be:

When a system malfunction occurs,one of the following appropriatediagnostic messages will bedisplayed:

*** Informational warning ***

An informational warning occurred

but has cleared “press (Next)”

*** A circuit shutdown hasoccurred ! ***

A circuit shutdown occurred


*** A machine shutdown hasoccurred ! ***

A machine shutdown occurred


NO ACTIVE DIAGNOSTICSPRESENT

If more than one diagnostic ispresent, only the highest priorityactive diagnostic will be explainedin detail. For example, if thediagnostics occur in the followingorder before the operator returns -IFW, MMR, CMR - the display willread:

because the MMR has the highestpriority. However, as the operatormoves through the diagnostic menuto the “Last diagnostic,” the[Diagnostic description] will showthe CMR diagnostic as well as theIFW. If the “Next” key is pressed,the display will show all the otheractive and historic diagnostics.

The active diagnostic priorities,listed from highest to lowest are:

Machine shutdown - manual reset(MMR)

Machine shutdown - automatic reset(MAR)

Circuit shutdown - manual reset(CMR)

Circuit shutdown - automatic reset(CAR)

Informational warning (IFW)

*** A machine shutdown hasoccurred ! ***

Diagnostics

17RLC-SVU02F-E4

Default description

Displayed Code Type DescriptionFault 87Check External Chilled Water Setpt : IFW - Value out of rangeFault 89Check External Current Limit Setpt : IFW - Value out of rangeFault 8AChilled Water Flow (Ent Wtr Temp) : MMR 1) Entering water temperature < leaving WT

2) No water flow3) Defective EVP sensor

Fault 8EEvaporator Entering Water Temp Sensor : MMR - Defective sensorFault 8FCondenser Rfgt Temp Sensor - Ckt 1 : MMR -Defective sensorFault 90Condenser Rfgt Temp Senspr - Ckt 2 : MMR - Defective sensorFault 93Evaporator Rfgt Temp Sensor - Ckt 1 : MMR - Defective sensorFault 94Evaporator Rfgt Temp Sensor - Ckt 2 : MMR - Defective sensorFault 9ACondenser Entering Water Temp Sensor : IFW - Defective sensorFault 9bCondenser Leaving Water Temp Sensor : IFW - Defective sensorFault A0Zone Temp Sensor : IFW - Defective sensorFault A1Outdoor Air Temp Sensor : IFW - Defective sensorFault AbEvaporator Leaving Wtr Temp Sensor : MMR - Defective sensorFault b5Low Pressure Cutout - Ckt 1 : CMR - LP pressure switch openFault b6Low Pressure Cutout - Ckt 2 : CMR - LP pressure switch openFault bAOverload trip - Cprsr A : CMR - Current exceededFault bbOverload Trip - Cprsr B : CMR - Current exceededFault bCOverload trip - Cprsr C : CMR - Current exceededFault bdOverload trip - Cprsr D : CMR - Current exceededFault bEHigh Pressure Cutout - Cprsr C : CMR - HP too highFault bFHigh Pressure Cutout - Cprsr D : CMR - HP too highFault C5Low Chilled Water Temp (Unit Off) : IFW - Antifreeze protectionFault C6Low Chilled Water Temp (Unit On) : MAR - Antifreeze protectionFault CAContactor - Cprsr A : MMR - Welded compressor contactorFault CbContactor - Cprsr B : MMR - Welded compressor contactorFault CCContactor - Cprsr C : MMR - Welded compressor contactorFault CdContactor - Cprsr D : MMR - Welded compressor contactorFault d7Over Voltage : MAR - Voltage 10% > nominalFault d8Under Voltage : MAR - Voltage 10% < nominalFault EdChilled Water Flow Interlock : MAR - Flow switch open more than 6 sec.Fault F5High Pressure Cutout - Cprsr A : MMR - HP too highFault F6High Pressure Cutout - Cprsr B : MMR - HP too highFault FdEmergency Stop Input : MMR - Emergency stop input open

Diagnostics

RLC-SVU02F-E418

Default description

Displayed Code Type DescriptionFault 180Starter Transition - Cprsr A : CMR 1) Transition proof signal not received

2) Proof input shuntedFault 181Starter Transition - Cprsr B : CMR 1) Transition proof signal not received

2) Proof input shuntedFault 182Starter Transition - Cprsr C : CMR 1) Transition proof signal not received

2) Proof input shuntedFault 183Starter Transition - Cprsr D : CMR 1) Transition proof signal not received

2) Proof input shuntedFault 184Phase Reversal - Cprsr A : CMR - Phase reversedFault 185 :Phase reversal - Cprsr B CMR - Phase reversedFault 186Phase reversal - Cprsr C : CMR - Phase reversedFault 187Phase reversal - Cprsr D : CMR - Phase reversedFault 190Low Superheat - Ckt 1 : CMR - Superheat < 1°C during more than 1333°C x secFault 191Low Superheat - Ckt 2 : CMR - Superheat < 1°C during more than 1333°C x secFault 194Low Evap Rfgt Temp. - Ckt 1 : CMR Fault 195Low Evap Rfgt Temp. - Ckt 2 : CMR Fault 198Low Oil Flow - Cprsr A : CMR - Oil flow switch open during more than 20 secFault 199Low Oil Flow - Cprsr B : CMR - Oil flow switch open during more than 20 secFault 19Alow Oil Flow - Cprsr C : CMR - Oil flow switch open during more than 20 secFault 19bLow Oil Flow - Cprsr D : CMR - Oil flow switch open during more than 20 secFault 19CPhase Loss - Cprsr A : CMR - Loss of 1 or more phasesFault 19dPhase Loss - Cprsr B : CMR - Loss of 1 or more phasesFault 19EPhase Loss - Cprsr C : CMR - Loss of 1 or more phasesFault 19FPhase Loss - Cprsr D : CMR - Loss of 1 or more phasesFault 1A0Power Loss - Cprsr A : CAR - Loss of all three phases in operationFault 1A1Power Loss - Cprsr B : CAR - Loss of all three phases in operationFault 1A2Power Loss - Cprsr C : CAR - Loss of all three phases in operationFault 1A3Power Loss - Cprsr D : CAR - Loss of all three phases in operationFault 1A4Tracer Communication Loss : IFW - Loss of external informationFault 1A5Oil Flow Control - Cprsr A : CMR - Problem on oil circuitFault 1A6Oil Flow Control - Cprsr B : CMR - Problem on oil circuitFault 1A7Oil Flow Control - Cprsr C : CMR - Problem on oil circuitFault 1A8Oil Flow Control - Cprsr D : CMR - Problem on oil circuitFault 1A9EXV Elec Drtive Ckt - Rfgt Ckt 1 : CMR 1) EXV wiring

2) Defective UCM3) Defective EXV4) Defective EXV relay

- Refrigerant temperature < Setpoint during more than 30°C x sec

- Refrigerant temperature < Setpoint during more than 30°C x sec

Diagnostics

19RLC-SVU02F-E4

Default description

Displayed Code Type DescriptionFault 1AAEXV Elec Drtive Ckt - Rfgt Ckt 2 : CMR 1) EXV wiring

2) Defective UCM3) Defective EXV4) Defective EXV relay

Fault 1AdMemory Error Type I : IFW Fault 1AELow Differential Pressure - Ckt 1 : CMR - Delta P< 2,8bar during more than 2 min.Fault 1AFLow Differential pressure - Ckt 2 : CMR - Delta P< 2,8bar during more than 2 min.Fault 1b2Severe Phase Unbalance - Cprsr A : CMR Fault 1b3Severe Phase Unbalance - Cprsr B : CMR Fault 1b4Severe Phase Unbalance - Cprsr C : CMR Fault 1b5Severe Phase Unbalance - Cprsr D : CMR Fault 1b6Compressor Overload Setting - Cprsr A : IFW - Check setting of compressor overloadFault 1b7Compressor Overload Setting - Cprsr B : IFW - Check setting of compressor overloadFault 1b8Compressor Overload Setting - Cprsr C : IFW - Check setting of compressor overloadFault 1b9Compressor Overload Setting - Cprsr D : IFW - Check setting of compressor overloadFault 1bAPhase Unbalance - Cprsr A : CMR - Phase imbalance >15%Fault 1bbPhase Unbalance - Cprsr B : CMR - Phase imbalance >15%Fault 1bCPhase Unbalance - Cprsr C : CMR - Phase imbalance >15%Fault 1bdPhase Unbalance - Cprsr D : CMR - Phase imbalance >15%Fault 1bEWinding Temp - Cprsr A : CMR - Winding temperature > 105°CFault 1bFWinding Temp - Cprsr B : CMR - Winding temperature > 105°CFault 1C0Winding Temp - Cprsr C : CMR - Winding temperature > 105°CFault 1C1Winding Temp - Cprsr D : CMR - Winding temperature > 105°CFault 1C6High Differential Pressure - Ckt 1 : CMR - LB/HP pressure differential > 24,5 barFault 1C7High Differential Pressure - Ckt 2 : CMR - LB/HP pressure differential > 24,5 barFault 1d1Memory Error Type II : IFW - RAM errorFault 1d2Memory Error Type III : IFW - RAM errorFault 1d3Cprsr Suction Temp Sensor - Ckt 1 : CMR - Defective sensorFault 1d4Cprsr Suction Temp Sensor - Ckt 2 : CMR - Defective sensorFault 1d7Phase Reversal Prot Lost - Cprsr A : CMR - Phase reversal protection not operativeFault 1d8Phase Reversal Prot Lost - Cprsr B : CMR - Phase reversal protection not operativeFault 1d9Phase Reversal Prot Lost - Cprsr C : CMR - Phase reversal protection not operativeFault 1dAPhase Reversal Prot Lost - Cprsr D : CMR - Phase reversal protection not operativeFault 1dbSlaved EXV Elec Drive Ckt - Rfgt Ckt 1 : CMR - EXV electric drive defectiveFault 1dCSlaved EXV Elec Drive Ckt - Rfgt Ckt 2 : CMR - EXV electric drive defectiveFault 1ddHigh Oil Temp - Cprsr A : CMR - Oil temperature > 77°C

- Phase imbalance >30%, check current transformer and unit power supply




- NOVRAM problem, unit is placed on default setting operating

Diagnostics

RLC-SVU02F-E420

Default description

Displayed Code Type DescriptionFault 1dEHigh Oil Temp - Cprsr B : CMR - Oil temperature > 77°CFault 1dFHigh Oil Temp - Cprsr C : CMR - Oil temperature > 77°CFault 1E0High Oil Temp - Cprsr D : CMR - Oil temperature > 77°CFault 1E1Oil System Fault - Cprsr A : CMR Fault 1E2Oil System Fault - Cprsr B : CMR Fault 1E3Oil System Fault - Cprsr C : CMR Fault 1E4Oil System Fault - Cprsr D : CMR Fault 1E5Entering Oil Temp Sensor - Cprsr A : CMR - Defective sensorFault 1E6Entering Oil Temp Sensor - Cprsr B : CMR - Defective sensorFault 1E7Entering Oil Temp Sensor - Cprsr C : CMR - Defective sensorFault 1E8Entering Oil Temp Sensor - Cprsr D : CMR - Defective sensorFault 2A1Cond Fan Vari Speed Drive Fault - Ckt 1 : IFW - Defective fan variator speed after 5 attempsFault 2A2Cond Fan Vari Speed Drive Fault - Ckt 2 : IFW - Defective fan variator speed after 5 attemps

Note :MMR : Machine shutdown manual reset.MAR : Machine shutdown automatic reset.CMR : Circuit shutdown manual reset.CAR : Circuit shutdown automatic reset.IFW : Informational warning.

- Oil temperature < condenser saturated temperature during more than 30 min




Diagnostics

21RLC-SVU02F-E4

Communication Failures

Displayed Code DescriptionFault 410 Loss of Local Display Panel CommFault 412 Chiller Mod to Option Mod Comm FailureFault 413 Chiller Mod to EXV Mod Comm FailureFault 414 Chiller Mod to Cprsr A Mod Comm FailureFault 415 Chiller Mod to Cprsr B Mod Comm FailureFault 416 Chiller Mod Cprsr C Mod Comm FailureFault 417 Chiller Mod to Cprsr D Mod Comm FailureFault 418 Chiller Mod to Slv EXV Mod Comm FailureFault 431 EXV Mod to Chiller Mod Comm FailureFault 434 EXV Mod to Cprsr A Mod Comm FailureFault 435 EXV Mod to Cprsr B Mod Comm FailureFault 436 EXV Mod to Cprsr C Mod Comm FailureFault 437 EXV Mod to Cprsr D Mod Comm FailureFault 441 Cprsr A Mod to Chiller Mod Comm FailureFault 443 Cprsr A Mod to EXV Mod Comm FailureFault 445 Cprsr A Mod to Cprsr B Mod Comm FailureFault 451 Cprsr B Mod to chiller Mod Comm FailureFault 453 Cprsr B Mod to EXV Mod Comm FailureFault 454 Cprsr B Mod to Cprsr A Mod Comm FailureFault 461 Cprsr C Mod to Chiller Mod Comm FailureFault 463 Cprsr C Mod to EXV Mod Comm FailureFault 467 Cprsr C Mod to Cprsr D Mod Comm FailureFault 471 Cprsr D Mod to Chiller Mod Comm FailureFault 473 Cprsr D Mod to EXV Mod Comm FailureFault 476 Cprsr D Mod to Cprsr C Mod Comm FailureFault 481 Slv EXV Mod to Chiller Mod Comm FailureFault 483 Slv EXV Mod to EXV Mod Comm FailureFault 484 Slv EXV Mod to Cprsr A Mod Comm FailureFault 485 Slv EXV Mod to Cprsr B Mod Comm FailureFault 486 Slv EXV Mod to Cprsr C Mod Comm FailureFault 487 Slv EXV Mod to Cprsr D Mod Comm Failure

Controller for hydraulic module/free cooling / heat recovery /RTWB heat pump applications

RLC-SVU02F-E422

The aim of this section is to list available screens on the additionalcontroller used to control Free Cooling /Heat Recovery application (version1.0) and hydraulic modules. The built-in control terminal features: • An LCD display (1), 4 lines x 20 characters with back lighting• 6 buttons (2) to (7)

User interface

2 = Alarm button: Used for displaying or manually resetting the alarms.The red LED lights up, when at least one alarm has been detected.

3 = Program button: Allows the various operating parameters to be set(safety parameters, thresholds).

4 = Escape button: Allows the return to default display

5, 6 = Downward and Upward arrows: Allow management of currentlydisplayed screen and setting of values of control parameters

7 = Validation button Allows to move from line to line in the currentlydisplayed screen and to confirm the set data.

Note: In addition to the mask definition, the setting range (withinparentheses or bold for discrete data) and the default value (underlined) ofeach parameter are indicated.

Prg Esc

1 2 3 4

5 6 7

Hydraulic module control

23RLC-SVU02F-E4

Control logic

Turning the control on

When switching on, all the outputswill be disabled.

Reaction in case of failure• Failure on entering water

temperature sensor (EWT):A failure on this sensor (value outof range) will disable the returnwater temperature control duringthe freeze protection by pumpactivation.

• Failure on ambient Air temperaturesensor (OAT):A failure on this sensor (Value outof range) will turn on the heateroutput and enable the freezeprotection by pump activation.

• No water flow while pump isactivated (demanded) or WFP:If the water flow input is open (noflow) for more than 20s whilepump is demanded for cooling orfor freeze protection by pumpactivation, then an automaticlatching alarm is activated. Duringthe 10 first seconds of this flowalarm, the module will switch tothe backup pump to try to obtain awater flow.

• Water flow without pumpactivation (demand):If the water flow input is closed(flow detected) for more than 30swithout pump demand andwithout manual forced activation,then an automatic latching alarmwill be activated.

Freeze protection resistance control

This application must control theelectric heater command to protectthe unit during low ambienttemperature when UCM-CLDdoesn't demand pump activation.

Electric Heater ON/OFF

If the ambient air temperature islower than the heater activationsetpoint -1°C, then the heater outputis activated. When the ambienttemperature reaches +1°C over thesetpoint, the output is deactivated.

Pump control

This application must control 2pumps mounted in parallel on theevaporator circuit of a RTAD unit. • Pump start and stop

When a pump demand is sent bythe UCM-CLD module and whenthe system is enabled, the controlis in charge of the activation of onthe 2 pumps (1 at a time). Ahardware safety exists on theelectrical panel not to start bothpumps at the same time.

• Automatic change-over on a pumpfailure:When a failure appears on a pumpin operation, the control willautomatically switch on the otherpump and will stop the faultypump.

• Automatic change-over on failureon water flow:When a water flow loss is detected,the control will automaticallyswitch on the backup pump to tryto keep water flow in the loop. Ifthe alarm remains or if the secondpump is out of order, an autolatching alarm is triggered.

• Pump change-over on pump start:When a new demand to start apump appears, a pump change-over will be done on the pump topreserve pump mechanical seals.

• Freeze protection by pumpactivation:When UCM-CLD does not requirepump activation and that ambienttemperature is lower than theelectric heater freeze protectionsetpoint but over 0°C, then awater pump is cyclically activated(5 min ON, 10 min OFFprogrammable). If the ambienttemperature is lower than 0°C,the pump is operatingcontinuously. This protection maybe deactivated.However, if the ambient airtemperature is lower than the lowambient setpoint (as a default -18°C), the freeze protection bypump activation is reactivated. In all cases, a temperature controlon the return water temperaturewill limit the water temperature ofthe loop. If this temperature goesover +15°C (programmable)during 5mn, then the pump isstopped during 10mn(programmable) and then willcycle according to these timers.


RLC-SVU02F-E424

Module and outputs/inputs

Use of the inputs-outputs

Name Function Terminal

EWT J2 : B1(+) / GND(0)

OAT Ambient Air Temperature Sensor J2 : B2(+) / GND(0)Power for binary inputs 24V J4 : IDC1(0)

Pump1_In Failure Pump 1 J4 : ID1(ac) / IDC1(0)Pump2_In Failure Pump 2 J4 : ID2(ac) / IDC1(0)FS_In Flow Switch Input J4 : ID3(ac) / IDC1(0)System System ON/OFF Input J4 : ID4(ac) / IDC1(0)Pump_Req J4 : ID5(ac) / IDC1(0)

Common Relays Outputs J9 : C1Pump1_Out Pump 1 Output J9 : N01(ac) / C1Pump2_Out Pump 2 Output J9 : N02(ac) / C1Heaters Electric Heaters Output J9 : N03(ac) / C1

Common Relays Outputs J10 : C4FS_Out Flow Switch Output to the UCM-CLD J10 : N04(ac) / C4Yes_Alarm Customer Information Output J11 : N05(ac) / C5

J11: C5

Yes_Alarm Customer Information Output J11 : NC5(ac) / C5

Power input to the module pCOXS

(50VA mini for the module only)

Entering Water Temperature Sensor EVP

Pump Activation Demand from the UCM-CLD

Common Relays Outputs Customer information

J1 : G(24Vac) / G0(neutral, connected to the earth)


25RLC-SVU02F-E4

Hydraulic module option

Permanent display

Access to this mask using the Esc key from any mask. The program willreturn automatically into it after 5 min.

1 = Application name and version number2 = Current date and time 3 = Ambient Air temperature 4 = Unit status:

"Pump 1 Running" Pump 1 is running"Pump 2 Running" Pump 2 is running"No Pump Request" No pump request sent by the UCM-CLD"Pump 1 OVD" Manual Override on pump 1"Pump 2 OVD" Manual Override on pump 2"System OFF" System is OFF"WFP Active" Winter Freeze Protection by pump is active"Alarm" An Alarm is present

Access to sub-menus

Access to this mask using the Prg key. The sub-menu will be selected usingthe Up and Down keys and selected using the Enter button.

1 = Data display menu2 = Settings menu3 = Clock menu4 = Unit configuration menu


RLC-SVU02F-E426

Data display menuThe following mask will be accessed using the Up and Down keys

Analog Inputs

1 = Customer return water temperature2 = Ambient air temperature

Digital Inputs

1 = Pump 1 (Failed, Normal)2 = Pump 2 (Failed, Normal)3 = Water Flow (No, Yes)4 = System Validation (No, Yes) 5 = Pump request (No,Yes)

Digital Outputs

1 = Pump 1 Output (No, Yes)2 = Pump 2 Output (No, Yes)3 = Heaters Output (No, Yes)4 = Flow Switch Output (No,Yes)5 = Alarm Output (No, Yes)

Counters

1 = Pump 1 Running hours2 = Pump 2 Running hours

Pump 1 : 000000 hrs

Pump 2 : 000000 hrs

Pump 1 : Yes Pump 2 : NoHeaters : NoFS_Out : YesAlarm : No5

Pump 1 Status:Pump 2 Status:Water flow:Syst: Yes Pump In: Yes

NormalNormalYes

5

Return Wat T

Outside Air T


27RLC-SVU02F-E4

Settings Menu

Access to each field within a mask using the Enter key. Change the fieldvalue using the Up and Down keys and confirmation by Enter.

1 = Access via password, 0000 to 9999

User Settings

1 = Pumps Rotation (No, Yes)

Clock Menu


Clock Settings

1 = Weekday (Mon, Tue, Wed, Thu, Fri, Sat or Sun)2 = Time setting3 = Date setting (dd/mm/yy)


RLC-SVU02F-E428

Alarms Messages - Hydraulic module application

Alarm ScreenHistory Events

RecordReset Type Comments Description

No Alarm No Alarm - noneSee Applicationstatus on Main

display

Alarm EWT Sensor

Faulty EWTSensor Auto No control on

EWT during WFP

Faulty sensor, out ofrange -38..+70°C

during +30s

Alarm OAT Sensor

Faulty OATSensor Auto Heaters ON

WFP activation

Faulty sensor, out ofrange -38..+70°C

during +30s

Alarm Pump 1 Faulty Pump 1 Manual Pump 1 OFF Failure on pump 1

Alarm Pump 2 Faulty Pump 2 Manual Pump 2 OFF Failure on pump 2

Alarm Flow Switch On

But no pumprequired

Water Flow w/oPump Auto

Could be due toa faulty water

flow switch

Water Flow isestablished but thereis no pump required

Alarm No Water Flow No Water Flow Auto No water flow

Water Flow is notestablished within

20s

Free Cooling Application

29RLC-SVU02F-E4


Permanent display

Access to this mask using the Esc key from any mask. The program willreturn automatically into it after 5 min.

1 = Application name and version number2 = Current date and time3 = Leaving water temperature4 = Unit status:

"Chiller Low Ambient" Chiller stopped by low ambient temperature"FC Low Ambient" Free Cooling stopped by low ambient temperature"Chiller" Chiller is running"Chiller, wait => FC" Chiller is switching to Free Cooling"Chiller => FC" Free Cooling is switching to Chiller"Free Cooling" Free Cooling is running"FC, wait => Chiller" Free Cooling is waiting for the end of timer to switch to Chiller"FC => Chiller" Chiller is waiting for the end of timer to switch to Free Cooling"Chiller, PLC Failure" Chiller is enabled, PLC (Programmable Logic Controller) is in alarm mode"PLC Failure" Chiller is not enabled, PLC is in alarm mode"Stopped" System is OFF

Access to Sub-menus




RLC-SVU02F-E430

Data display menu

The following mask will be accessed using the Up and Down keys

Analog Inputs

1 = Entering water temperature2 = Leaving water temperature3 = Ambient air temperature4 = Active chilled water setpoint

Setpoint Source

1 = Setpoint Source (Front Panel, External, Air Reset, Return Water Reset)2 = Active chilled water setpoint

"Front Panel" Setpoints come from local source"External" Setpoints come from external source"Air Reset" Setpoints adjusted according to readings

from air temperature sensor"Return Water Reset" Setpoints adjusted according to readings

from return water temperature sensor


31RLC-SVU02F-E4

Digital Inputs

1 = System (Off, On); NNSB (Off, On)2 = UCM Pump (Not Req., Required)3 = Flow Switch (OK, Not OK)4 = Free Cooling (Disable, Enable)

Digital Outputs

1 = Fans 1, 2 and 3 (Off, On)2 = Fan Speed (Low, High)3 = FC status (Off, On)4 = UCM enabled (Off, On)5 = System Pump (Off, On)6 = Flow Switch (Off, On)7 = PRG Relay (Off, On)


RLC-SVU02F-E432

3 Way Valve IO

1 = 3WV Input Position (Value and Input Analog Voltage)2 = 3WV Output Position (Value and Output Analog Voltage)

Chilled Water Setpoint IO

1 = External Chilled Water Setpoint (Value and Input Analog Voltage)2 = Adjusted Water Setpoint Output (Value and Output Analog Voltage)

Settings Menu



User Settings

1 = Leaving Water Temp SP (-17.8°C (or LAW+2.8°C)..15°C (or HCWSP): 7°C)2 = Chiller Delta Temp SP (2°C..10°C: 5°C)3 = Pump OFF Delay Timer (0..30min: 1min)4 = Programmable Relay Function (PLC ON, PLC Fault, FC ON)

SpeedLow

RelayOff


33RLC-SVU02F-E4

Chilled Water Reset CWR

1 = Reset Type (None, External, Based on OAT, Based on Ret Wat)

"None" No reset has been requested"External" Reset comes from external source"Based on OAT" Reset is based on outdoor air temperature"Based on Ret Wat" Reset is based on return water temperature

2 = Ratio (-80%..120%: 25%)3 = Start Temperature (-15.5°C..54.4°C: 10°C)4 = Maximum CWR (0°C..11.1°C: 2.7°C)

Clock Menu


Clock Settings



RLC-SVU02F-E434

Alarm Messages - Free Cooling Application

Alarm Screen History EventsRecord

ResetType

Unit status Description

No Alarm No Alarm -Free Cooling ON

Chiller ONSee unit status on

Main display

Alarm LWT SensorFaulty LWT

SensorAuto

Free Cooling OFFChiller ON

Faulty sensor, out of range

-38..+ 60°C during + 30s

Alarm EWT SensorFaulty EWT

SensorAuto



-38..+ 60°C during + 30s

Alarm OAT SensorFaulty OAT

SensorAuto



-38..+ 60°C during + 30s

Alarm Flow Switch Flow Switch AutoFree Cooling OFF

Chiller OFFNo water flow during 6s

Alarm

Low LWT or EWTLow LWT or EWT Auto

Free Cooling OFFChiller OFF

LWT or EWT below LAW for

more than 16.6°C*s

AlarmInt (LWT-EWT)

>120°C*s

LWT > EWTduring +120s

ManualFree Cooling OFF

Chiller OFFLWT-EWT

above 120°C*s

Alarm3WV Position

Diff In vs Out > 10%

3WV DeltaIn vs Out

ManualFree Cooling OFF

Chiller OFF

Diff between 3WVIn and Out > 10% formore than 2*Valve

Stroke Time

Heat Recovery Application

35RLC-SVU02F-E4

Permanent display

Access to this mask using the Esc key from any mask. The program willreturn automatically into it after 5min.

1 = Application name and version number2 = Current date and time3 = Hot water temperature4 = Unit status:

"Cool Mode Running" Chiller is running in Cool Mode"Cool&HR Mode Running" Chiller is running in Cool and Heat Recovery Mode"Cool&HR Mode Stopped" Chiller is stopped in Cool and Heat Recovery Mode"Cool Mode Stopped" Chiller is stopped in Cool Mode"HR is Starting" Heat Recovery is starting"HR is Stopping" Heat Recovery is stopping"Alarm" Chiller is stopped by Alarm

HR Application 00/00/00Hot Wat Temp:Cool&HR Mode

V1.000:0000.0°CRunning


RLC-SVU02F-E436

Access to Sub-menus



Data display menu


Analog Inputs

1 = Customer return hot water temperature2 = Circuit 1 pressure3 = Circuit 2 pressure4 = Active hot water setpoint

Hot Water Temp:C1 pressure:C2 pressure:Active HWSP:

00.0°C00.0b00.0b00.0°C


37RLC-SVU02F-E4

Digital Inputs

1 = Circuit 1 (Stopped, Running)2 = Circuit 2 (Stopped, Running)3 = Heat Recovery Status (Disabled, Enabled)4 = Night Noise Set Back (Off, On)

Digital Outputs

1 = Circuit 1 Fans stages (Off, On) Circuit 1 Enable Output (Off, On)2 = Circuit 2 Fans stages (Off, On) Circuit 2 Enable Output (Off, On)3 = Programmable Relay (Off, On)

Analog Outputs

1 = 3-Way valve Output (Value and Output Analog Voltage)2 = C1 Speed Inverter Output (Value and Output Analog Voltage)3 = C2 Speed Inverter Output (Value and Output Analog Voltage)

000.0% (00.0V)000.0% (00.0V)000.0% (00.0V)

3WV:DV1:DV2:

CKTOnOn

FAN1:FAN2:PRG Relay:

1OffOffOn

2OffOff

3OffOff

Circuit 1:Circuit 2:HR Status: NNSB:

RunningRunningEnabledOff


RLC-SVU02F-E438

Settings Menu



User Settings

1 = Hot Water Temp SP (40..60°C: 50°C)2 = Programmable Relay Function (PLC ON, PLC Fault, HR ON)

Clock Menu


Clock Settings


Hot Water SP:

PRG Relay:

50°C

HR ON


39RLC-SVU02F-E4

Alarms Messages - Heat Recovery Application

Alarm Screen History Events

RecordReset Type Unit status Description

No Alarm No Alarm -Heat

Recovery ONChiller ON

See unit status on Main display

Alarm HWTSensor

Faulty HWTSensor Auto

HeatRecovery OFF

Chiller ON

Faulty sensor, out of range -38..+ 85°C during + 30s

Alarm PRS1Sensor

Faulty PRS1Sensor Auto

HeatRecovery ONCircuit 1 OFF

Faulty sensor, out of range -0.5..+ 30 bars during + 15s

Alarm PRS2Sensor

Faulty PRS2Sensor Auto

HeatRecovery ONCircuit 2 OFF

Faulty sensor, out of range -0.5..+ 30 bars during + 15s

RTWB Heat Pump Application

RLC-SVU02F-E440

Permanent display

Access to this mask using the "Esc" key from any mask. The program willreturn automatically into it after 5 min.

1 = Application name and version number2 = Current date and time3 = Condenser Leaving Water Temperature4 = Unit status:

Access to sub-menus

Access to this mask using the "Prg" key


The sub-menu will be selected using the Up and Down keys and selectedusing the Enter button.

Data display menu


Binary and Analog Inputs

1 = Condenser Leaving Water Temperature2 = ON/OFF Unit input (Stop, Auto)3 = External Mode input (Heat, Cool): displayed if Ext Ctrl enabled4 = Pump Request input (No pump, Pump Req)

none no alarm

"Alarm" An Alarm is present


41RLC-SVU02F-E4

Binary Outputs

1 = Active Mode (Heating, Cooling)2 = Unit Status (Stopped, Running)3 = CDS Pump Status (Stopped, Running)4 = Sensor Alarm (Normal, Alarm)

Active Setpoints

1 = Active Mode (Heating, Cooling)2 = Heating Setpoint (displayed if Heating Mode)3 = Cooling Setpoint (displayed if Cooling Mode)

Note: "Ext" is displayed according to the External Control setting (No,Partial (Mode only), Full (Mode + SP))


RLC-SVU02F-E442

Settings Menu

Access to each field within a mask using the "Enter" key. Change the fieldvalue using the Up and Down keys and confirmation by "Enter".

1 = (0000 to 9999)

User Settings 1

1 = Front Panel Heat Setpoint (25.0°C..60.0°C: 35.0°C)2 = Front Panel Cool Setpoint (-12.0°C..18.0°C: 6.0°C)3 = Front Panel Heat/Cool switch (Heat, Cool)4 = External Control (No, Partial, Full)

User Settings 2

1 = External Heat Setpoint Input Type (0-1V, 4-20mA)2 = External Cool Setpoint Input Type (0-1V, 4-20mA)

Note: This screen is displayed if the External Control setting is "Full" (Mode+ SP)


43RLC-SVU02F-E4

Clock Menu


Clock Settings


Alarms Messages - RTWB Heat pump application

AlarmScreen

HistoryEvents Record

ResetType Comments Description

No Alarm No Alarm - none See Application status on Maindisplay

Alarm CDSLWT Sensor

Faulty CDSLWT Sensor Auto

Chillerstopped (in

Heatingmode only)

Faulty sensor, out of range-38..+70°C during +60s

Literature Order Number RLC-SVU02F-E4

Date 0209

Supersedes RLC-SVU02E-E4_0508

Trane has a policy of continuous product and product data improvement and reserves the right tochange design and specifications without notice. Only qualified technicians should perform theinstallation and servicing of equipment referred to in this publication.

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For more information, contact your local sales office or e-mail us at [email protected]

Trane bvbaRegistered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium

owner manual - trane

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