trane hvac

UCM-CLDChiller Control System

RLC-SVU02C-E4

OwnerManual

RLC-SVU02C-E4

Foreword

These instructions are given as a guideto the operation of the controller(s)mounted on Trane RTAD chillers. Theydo not contain full service proceduresnecessary for the continued successfuloperation of this equipment. Theservices of a qualified technicianshould be employed through themedium of a maintenance contractwith a reputable service company.Read this manual thoroughly beforeunit start-up.

Warnings and cautions

Warnings and Cautions appear atappropriate sections throughout thismanual. Your personal safety andthe proper operation of this machinerequire that you follow themcarefully. The constructor assumesno liability for installations orservicing performed by unqualifiedpersonnel.

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 recommendations

To avoid death, injury, equipment orproperty damage, the followingrecommendations should be observedduring maintenance and service visits:

1. The maximum allowable pressuresfor system leak testing on low and highpressure side are given in the chapter"Installation". Always provide apressure regulator.

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

3. Service work on the refrigerationsystem and the electrical systemshould be carried out only by qualifiedand experienced personnel.

Reception

On arrival, inspect the unit beforesigning the delivery note.

Reception in France only:In case of visible damage: Theconsignee (or the siterepresentative) must specify anydamage on the delivery note, legiblysign and date the delivery note, andthe truck driver must countersign it.The consignee (or the siterepresentative) must notify TraneEpinal Operations - Claims team andsend a copy of the delivery note.The customer (or the siterepresentative) 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 exceptFrance:In case of concealed damage: Theconsignee (or the siterepresentative) must send aregistered letter to the last carrierwithin 7 days of delivery, claimingfor the described damage. A copy ofthis letter must be sent to TraneEpinal Operations - Claims team.

Warranty

Warranty is based on the general termsand conditions of the manufacturer.The warranty is void if the equipment isrepaired or modified without thewritten approval of the manufacturer, ifthe operating limits are exceeded or ifthe control system or the electricalwiring is modified. Damage due tomisuse, lack of maintenance or failureto comply with the manufacturer'sinstructions or recommendations is notcovered by the warranty obligation. Ifthe user does not conform to the rulesof this manual, it may entailcancellation of warranty and liabilitiesby the manufacturer.

Maintenance contract

It is strongly recommended that yousign a maintenance contract withyour local Service Agency. Thiscontract provides regularmaintenance of your installation bya specialist in our equipment.Regular maintenance ensures thatany malfunction is detected andcorrected in good time andminimizes the possibility thatserious damage will occur. Finally,regular maintenance ensures themaximum operating life of yourequipment. We would remind youthat failure to respect theseinstallation and maintenanceinstructions may result in immediatecancellation of the warranty.

Training

To 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 theyare using, or that is under theircharge. Emphasis is particularlygiven to the importance of periodicchecks on the unit operatingparameters as well as on preventivemaintenance, which reduces thecost of owning the unit by avoidingserious and costly breakdown.

General information

©American Standard Inc. 2001

RLC-SVU02C-E4 3

Contents

General Information 2

Principles of operation

of the UCM-CLD module 4

General Information 4

Operator’s Interface 5

Operational Features 9

Hot Water Mode Control Module

(model RTWB units only) 14

Diagnostics 17

Diagnostics 17

Default Description 18

Additional controller for Free Cooling /

Heat Recovery Applications 23

RLC-SVU02C-E44

General InformationThis UCM-CLD chiller control iscomposed of eight electronicmodules, which each have their own115V or 24V power supply andcommunicate with each other via aserial link. The names of themodules are linked to theirfunctions.

Principles of Operation of theModule UCM-CLD

Figure 1 : Operator’s interface

CompressorReport

RefrigerantReport

ChillerReport

CustomReport

Select Report Group

DiagnosticsServiceTests

ServiceSettings

OperatorSettings

Alarm

AutoEnterPrevious

StopCancelNext

Select Setting Group

ADAPTIVE CONTROL™

Module FunctionsMCSP (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 to communicate with up tofour units of the same type (optional module)

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

Protection of the internal communication bus in the unit from external interferences(optional factory-mounted module, compulsory when using a Remote CLD)

Interface between the control of the unit and a Building Management System using TraneCOMM 3 serial link

RLC-SVU02C-E4 5

Operator's Interface

Digital DisplayThe display of control regulationand operating parameters,diagnostics, and error messages is a2-line, 40-character, liquid-crystaldisplay. The display has a LEDbacklight to read in low-lightconditions and to warm up thedisplay 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.

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


Individual Menu Keys Control KeysChiller 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-SVU02C-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 displayed isread-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 is looped,making it possible to scroll from thefirst item in the menu to the lastitem.[Next] key Pressing this key allowsthe operator to scroll down to thenext information in the currentmenu. Each menu is looped,making it possible to scroll from thelast item in the menu to the firstitem.[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 mode withthe [Stop] key. The unit cannot beforced into Auto mode if an externalcontact or the serial link has stoppedit. When the unit is stopped by theremote interface (Remote CLD), thelocal mode order has priority.[Stop] key Pressing this key allowsthe unit to be in Stop mode. In everycase, 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.


RLC-SVU02C-E4 7

Parameters and setpoints within each menuMenu Parameters/setpoints Range

Minimum/MaximumChiller Report Menu Active Chilled Water Setpoint

Evaporator 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-SVU02C-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.


RLC-SVU02C-E4 9

Operational features

Entering evaporator water temperatureWhen one or both compressors arerunning, the UCM continually monitorsand compares the entering and leavingevaporator-water temperatures. If thetemperature of the entering waterdrops more than 1°C below the leavingwater temperature for more than 55°C-seconds, the UCM uses this to indicatea loss of water flow through theevaporator. This will shut down thatcircuit's compressor and will displayMMR diagnostic.

Current Limit Setpoint (CLS)The current limit setpoints for thesystem are entered through the ClearLanguage Display menus. The currentlimit Setpoint for each compressor isshown in Table 1.

Table 1 – Compressor current limit Setpointversus Chiller current limitSetpoint

SystemCLS One Two

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

Based upon current levels received atthe UCM, the compressor slide valve ismodulated to prevent the actual chillercurrent from exceeding the CLS.

When a compressor is turned off, theCLS 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 than 10%RLA per minute to the new Setpoint.

Electronic expansion valve (EXV) testThis test can be performed only whenthe “Stop“ key has been pressed. It willconfirm proper operation of theelectronic expansion valve and theEXV module.

After the test has been initiated at theClear Language Display, the UCM will:

1. Overdrive the EXV closed (25seconds)

2. Overdrive the EXV open (25seconds)

3. Overdrive the EXV closed (25seconds)

4. Reset the display to disable and endthe test

The EXV produces an audible clickingsound when it is driven against its endstops. Step 1 drives the EXV to itsclosed position, during which timeservice personnel can move from theCLD to the EXV.

Note: A tool may be needed to aid inhearing the clicking of the EXV, such asa screwdriver held between the EXVand the ear.

Current overload protectionThe UCM continually monitorscompressor current to provide unitprotection in the event of anovercurrent or locked-rotor condition.Protection is based on the phase withthe highest current and, if limits areexceeded, the UCM will shut down thecompressor and will display an MMRdiagnostic.

Leaving chilled-water temperaturecontrolIf the Auto key is pressed and a remotechilled-water Setpoint has beencommunicated, the UCM will control tothat Setpoint. Otherwise, it will controlto the front-panel Setpoint. Control isaccomplished both by stagingcompressors and by modulating theslide valves on each compressor.

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


Numbers of compressor inoperation

RLC-SVU02C-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 CWRRETURN WATER TEMPERATURERESETZONE TEMPERATURE RESETOUTDOOR AIR TEMPERATURE RESET

Leaving-water temperature cutoutThis temperature cutout providesprotection against freezing caused bylow leaving-water temperature. Thesetpoint is both factory-set andadjustable from the Service SettingMenu. Temperatures below thesetpoint will cause the UCM toaccelerate reduction of chiller capacity,even to the point of compressorshutdown. A non-latching diagnosticwill be generated if the LWT is belowthe cutout for more than 16°C-seconds.

There must be a minimum of 2.7°Cbetween the cutout temperature andboth the front-panel and active-chilled-water setpoints. The Clear LanguageDisplay will not permit setting of eitherthe front-panel or active-chilled-watertemperatures less than 2.7°C above thecutout temperature. The second linewill state:

If the leaving-water temperature cutoutis set upward, the Clear LanguageDisplay will maintain the 2.7°Cminimum and will automatically raisethe settings on the front-panel andactive-chilled-water setpoints, ifnecessary.

If the front-panel or active-chilled-watersetpoints were adjusted, the displaywill show the following when the“enter“ key is pressed:

If the leaving-water temperature dropsbelow the cutout setpoint while thecompressors are de-energized, it willproduce an IFW diagnostic. If theleaving-water temperature dropsbelow the cutout setpoint while thecompressors are energized for 16°C-seconds, the unit will shut down on anMAR diagnostic.


Limited by Cutout Setpoint (+) tochange

FRONT PANEL CHILLED WATERSETPOINT HAS BEEN

INCREMENTED DUE TO CUTOUTSETPOINT CHANGE

RLC-SVU02C-E4 11

Low refrigerant temperature cutoutBoth circuits are protected from asaturated-evaporator refrigeranttemperature that goes below thissetting. The cutout Setpoint must be ata minimum of 8°C lower than the frontpanel or active chilled-water setpoints.See Table 2 for proper settings.

There must be a minimum of 8°Cbetween the cutout temperature andactive chilled-water setpoints. The ClearLanguage Display will not permitsetting of the chilled-water temperatureless than 8°C above this cutouttemperature, and the display will flashthe last valid temperature.

If the leaving-water temperature cutoutis set upward, the Clear LanguageDisplay will maintain the 8°C minimumand will raise the settings of the chilled-water setpoints, if necessary.

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

If the saturated-evaporator refrigeranttemperature for a circuit drops belowthis Setpoint for longer than 16°C-seconds, the circuit will be shut downand a CMR diagnostic will bedisplayed.


FRONT PANEL CHILLED WATERSETPOINT HAS BEEN

INCREMENTED DUE TO CUTOUTSETPOINT CHANGE

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-SVU02C-E412

Balanced compressor starts and hoursThis feature is enabled/disabled inbalanced starts and hours (servicesetting menu). When enabled, the UCMwill start the compressor with thefewest starts and stop the compressorwith the greatest number of operatinghours, as determined by the“compressor starts“ accumulator andthe “compressor hours“ accumulator.This will tend to balance out hours andstarts equally over both compressors.

Phase imbalance protection

The Clear Language Display monitorsthe current in each phase andcalculates the percentage of imbalanceas follows:

% imbalance = (Ix - I average)I average

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

Ix = phase with greatest differencefrom I average (without regard tosign).

If phase-unbalanced protection (servicesetting menu) is enabled and theaverage three-phase current is greaterthan 80% RLA, and the percent ofimbalance is calculated to exceed 15%,the UCM will shut down thecompressor and display a CMRdiagnostic.

Reverse rotation protectionThe Clear Language Display monitorsincoming current during start-up andwill shut down the compressor withinone second if phase reversal isdetected.

CCAAUUTTIIOONN

Phase relationship during installationof unit power must be carefullycontrolled to ensure compressorprotection against reversed rotation.

Oil failure protectionThe logic of the UCM uses acomparison of the entering oiltemperature at the compressor, to thesaturated-condenser temperature, todetermine if there is an oil linerestriction.

The differential between the entering-oil and the saturated-condensertemperatures is referred to as the “oilloss differential setpoint“ in the servicesettings menu.

If the entering oil temperature drops2°C below the saturated-condensertemperature for more than 30 minutes,the circuit will shut down on a CMRdiagnostic. The diagnostic will bepresented as:


OIL SYSTEM FAULT - CKT X

DIP switch settingsCompressor overload DIP switches.

IPC addressThe IPC address sets the address for Inter-Processor Communications of the ClearLanguage Display modules. The following are the IPC DIP switch settings for themodules.

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

RLC-SVU02C-E4 13

2-10 V (dc)/4-20 mA input for ExternalChilled-Water Setpoint (CWS) orCurrent limit Setpoint (CLS)When either external CWS or externalCLS is used on the optional module A9,DIP switch SW1 positions 1 and/or 2must be set to accommodate the typeof of signal source the customer haschosen, either 2-10 V (dc) or 4-20 mA.Position SW1-1 sets 2-10 V (dc)/4-20 mAfor external CLS. The “OFF“ settingconfigures the external input for 2-10 V(dc)/4-20 mA for external CLS. The“OFF“ setting configures the externalinput for 2-10V (dc), the “ON“ settingconfigures the external input for 4-20 mA.

Leaving Condenser-Water Temperaturecontrol option - Model RTWBIf the machine is delivered with theLCWT control option (digit 49 position3), the DIP switch on the module A9must be set at position “ON.“ Thisoption controls the condenser (CDS)leaving-water temperature (LCWT)based on a Hot Water Temperaturesetpoint (HWSP).

LimitationsIn the heating mode, the chiller is notable to provide chilled water for aprocess. The leaving chilled-watertemperature is not controlled. The UCMwill only take care of safeties (waterflow 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 RecoveryUCM-CLD will not display leaving andentering water temperature above70.1°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.

Mechanical control settingsThe 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

RLC-SVU02C-E414

Hot-Water Mode ControlModule - Option ModelRTWB

Scope of Supply The following parts will be installed inthe 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 5 and 6 on terminal block TB2of the A70 module.

Sequence of Operation• Cooling ModeThe unit will operate as a standardchiller (i.e., the chiller controls theleaving chilled-water temperature). Thecondenser pump will be driven by theUCM relay. The chiller uses the coolingsetpoint defined in the A70 Module.

• Heating ModeIn 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. To loador unload the chiller, a chilled-watersetpoint reset is applied (i.e., setpointdecrease = load; setpoint increase =unload). The condenser pump isalways in operation. The evaporatorpump is still controlled by the UCMand is always in operation. The chilleruses the heating setpoint defined in theA70 Module.

The chiller will be stopped if thecondenser leaving-water temperatureis greater than the setpoint + the“differential to stop”. The chiller willstart if the condenser leaving-watertemperature is lower than the setpoint -the “differential to start”.

• Sensor FailureIn the heating mode, and if the CDSleaving-water temperature sensor fails,the chiller is stopped and the alarmrelay of the A70 Module is energized.The chiller can operate in the coolingmode if the CDS leaving-watertemperature sensor has failed.

A70 Module and UCM interactionChilled-Water setpoint: The A70 Moduledrives the chilled-water setpoint usinga linear signal from an Analog Outputof the A70 Module to the externalchilled-water setpoint input of theUCM.

Chiller Enable/Disable: The A70 Moduledrives the chiller (on or off) using a drycontact from the A70 Module to theexternal start/stop input 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-watersetpoint to the UCM. This analog signal(factory set at 4-20mA) is constantlyreset to match the heating load.• Setpoint decreases ! load the chiller• Setpoint increases !unload thechiller

Note that the UCM still operates as achilled-water controller.

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

Human Interface

• Display parameters

- Heat/Cool switch: the operator canselect to operate either in cooling orheating mode.Default Setting : COOL

- External Control: Yes/No; Is the unitcontrolled by external signals?Default Setting : NO


+ -

+ -

RLC-SVU02C-E4 15

- Cooling Setpoint :from -12.0°C to 18.0°C Default Setting : 06.0 DEG

The operation in Cooling or Heatingmode is selected either from theoperator interface or from a remoteplace using a binary input.


+ -

+ -- Heating Setpoint :from 25°C to 60°C Default Setting : 35.0 DEG

+ -

- Temperature Deadband :from 0.2°C to 2.0°C Default Setting : 1.2 DEG

+ -

- Control Speed % : from 10 to 100%(10 = slow ; 100 = fast)Default Setting : 50%

- Differential to start/stop : from 1.0°C to 2.5 °CDefault Setting : 1.0 DEG

- Chilled-water adjustment offset : from -2.0°C to 2.0 °CDefault Setting : 0.0 DEG

RLC-SVU02C-E416

External ControlsIf the unit is controlled from externalsignals (parameter “External Control”),the following wiring will be done:- External Start/Stop: Binary Input(close = start; open = stop). Terminals1 and 2 on terminal block TB4.

- External Cooling setpoint: AnalogInput from -17.8 to 18.3°C (4 - 20mA or2 - 10V). Terminals 7 and 8 on terminalblock TB2. Refer to table 4 for thesetting rule.

- External Heating Setpoint: AnalogInput from 25.0 to 60.0°C (4 - 20mA or2 - 10V). Terminals 9 and 10 onterminal block TB2. Refer to Table 4 forthe setting rule.

- External Heat/Cool Switch: BinaryInput (close = heat; open = cool).Terminals 3 and 4 on terminal blockTB4.


Table 3: Input values vs. External hot-water setpoint

2.0 4.0 253.1 6.3 304.3 8.5 355.4 10.8 406.6 13.1 457.7 15.4 509.1 17.7 5510.0 20.0 60

Voltage(V(dc))

Current(mA)

Resultinghot-water

setpoint (°C)

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

Voltage Current(V(dc)) (mA)

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

Resultinghot-water set

point(°C)

RLC-SVU02C-E4 17

Diagnostics

NO ACTIVE DIAGNOSTICSPRESENT

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

*** A machine shutdown hasoccurred ! ***

A machine shutdown occurred

but has cleared “press (Next)”

*** A circuit shutdown has occurred! ***

A circuit shutdown occurred


*** Informational warning ***

An informational warning occurred


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:

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

*** A machine shutdown hasoccurred ! ***

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, thedisplay will show all the other activeand 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)

RLC-SVU02C-E418

Default descriptionDisplayed 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-SVU02C-E4 19

Default descriptionDisplayed 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

Diagnostics

- Refrigerant temperature < Setpoint during morethan 30°C x sec- Refrigerant temperature < Setpoint during morethan 30°C x sec

RLC-SVU02C-E420

Default descriptionDisplayed 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°CFault 1dEHigh Oil Temp - Cprsr B : CMR - Oil temperature > 77°CFault 1dFHigh Oil Temp - Cprsr C : CMR - Oil temperature > 77°C

Diagnostics

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

- NOVRAM problem, unit is placed on defaultsetting operating

RLC-SVU02C-E4 21

Default descriptionDisplayed Code Type DescriptionFault 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.

Diagnostics

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

RLC-SVU02C-E422

Communication FailuresDisplayed 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

Diagnostics

RLC-SVU02C-E4 23

The aim of this section is to list available screens on the additional controllerused to control Free Cooling /Heat Recovery application (version 1.0). Thebuilt-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

Controller for Free Cooling/Heat Recovery Application

RLC-SVU02C-E424

Free Cooling Application

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

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-SVU02C-E4 25

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


RLC-SVU02C-E426

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-SVU02C-E4 27

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

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 = 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


RLC-SVU02C-E428

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

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


RLC-SVU02C-E4 29

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 Maindisplay

Alarm LWT SensorFaulty LWT

SensorAuto

Free Cooling OFFChiller ON

Faulty sensor, out of range -38..+ 60°C during + 30s

Alarm EWT SensorFaulty EWT

SensorAuto

Free Cooling OFFChiller ON

Faulty sensor, out of range -38..+ 60°C during + 30s

Alarm OAT Sensor Faulty OAT Sensor AutoFree Cooling OFF

Chiller ONFaulty sensor, out of range -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 LAWfor 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% for morethan 2*Valve Stroke Time


RLC-SVU02C-E430

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

Heat Recovery Application

RLC-SVU02C-E4 31

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

Data display menu

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

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


RLC-SVU02C-E432

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-SVU02C-E4 33

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.


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

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

Hot Water SP:

PRG Relay:

50°C

HR ON


RLC-SVU02C-E434

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


RLC-SVU02C-E4 35

Notes

Literature Order Number RLC-SVU02C-E4

Date 0106

Supersedes RLC-SVU02B-E4_0805

Literature Stocking Location Europe

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.www.trane.com

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

American Standard Europe BVBARegistered Office: 1789 Chaussée de Wavre, 1160 Brussels - Belgium

trane hvac

Documents

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equipment orpropertydamage

equipment orproperty

days of delivery

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described damage

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case of concealed damage