Sterling 30RA010-055 manual Dual Chiller Thermistor Location, Marquee Display Menu Structure

Page 26
Fig. 17 — Dual Chiller Thermistor Location

As part of a pump maintenance routine, the pumps can be started to maintain lubrication to the pump seal. To utilize this function, Cooler Pmp Periodic Start (PM.P.S) [Configuration, UNIT] must be set to YES. This option is set to NO as the fac- tory default. If feature is enabled and the pump(s) are not operating, then the pumps will be operated every other day for 2 seconds starting at 14:00 hours. If a pump has failed and has an active Alert condition, it will not be started that day.

Configuring and Operating Dual Chiller Con- trol — The dual chiller routine is available for the control of two units supplying chilled fluid on a common loop. This control algorithm is designed for parallel fluid flow arrangement only. One chiller must be configured as the master chiller, the other as the slave. An additional leaving fluid temperature thermistor (Dual Chiller LWT) must be installed as shown in Fig. 17 and connected to the master chiller. Refer to Sensors sec- tion, page 4, for wiring. The SCN communication bus must be connected between the two chillers. Connections can be made to the SCN screw terminals on TB3. Refer to Sterlco Comfort Network Interface section, page 3, for wiring information.

Refer to Table 21 for dual chiller configuration. In this example the master chiller will be configured at address 1 and the slave chiller at address 2. The master and slave chillers must reside on the same SCN bus (SCNB) but cannot have the same SCN address (SCNA) [Configuration, OPT2]. Both master and slave chillers must have Lead/Lag Chiller Enable (LLEN) [Configuration, RSET] configured to ENBL. Master/ Slave Select (MSSL) [Configuration, RSET] must be config- ured to MAST for the master chiller and SLVE for the slave. Also in this example, the master chiller will be configured to use Lead/Lag Balance Select (LLBL) and Lead/Lag Balance Delta (LLBD) [Configuration, RSET] to even out the chiller run-times weekly. The Lag Start Delay (LLDY) [Configura- tion, RSET] feature will be set to 10 minutes. This will prevent the lag chiller from starting until the lead chiller has been at 100% capacity for the length of the delay time. Parallel config- uration (PARA) [Configuration, RSET] can only be config- ured to YES. The variables LLBL, LLBD and LLDY are not used by the slave chiller.

Dual chiller start/stop control is determined by configura- tion of Control Method (CTRL) [Configuration, OPT2] of the Master chiller. The Slave chiller should always be configured for CTRL=0, Switch. If the chillers are to be controlled by Remote Contacts, both Master and Slave chillers should be enabled together. Two separate relays or one relay with two sets of contacts may control the chillers. The Enable/Off/ Remote Contact switch should be in the Remote Contact position on both the Master and Slave chillers. The Enable/Off/ Remote Contact switch should be in the Enable position for CTRL=2, Occupancy or CTRL=3, SCN Control.

Both chillers will stop if the Master chiller Enable/Off/ Remote Contact switch is in the Off position. If the Emergency Stop switch is turned off or an alarm is generated on the Master chiller the Slave chiller will operate in a Stand-Alone mode. If the Emergency Stop switch is turned off or an alarm is generated on the Slave chiller the Master chiller will operate in a Stand-Alone mode.

The master chiller controls the slave chiller by changing its Control Mode (STAT) [Run Status, VIEW] and its operating setpoint or Control Point (CTPT) [Run Status, VIEW].

THERMISTOR

WIRING*

RETURN

MASTER

 

LEAVING

FLUID

 

 

CHILLER

 

FLUID

SLAVE

CHILLER

INSTALL DUAL CHILLER LWT

LEAVING FLUID TEMPERATURE

THERMISTOR (T10) HERE

*Depending on piping sizes, use either:

•HH79NZ014 sensor/10HB50106801 well (3-in. sensor/well)

•HH79NZ029 sensor/10HB50106802 well (4-in. sensor/well)

Fig. 17 — Dual Chiller Thermistor Location

Table 9 — Marquee Display Menu Structure*

MODE

RUN

SERVICE

TEMPERATURES

PRESSURES

SET

INPUTS

OUTPUTS

CONFIGURATION

TIME

OPERATING

ALARMS

STATUS

TEST

POINTS

CLOCK

MODES

 

 

 

 

 

 

 

 

Auto

Manual

Unit

Ckt A

 

Unit

Unit

 

 

 

 

 

Mode

Cooling

Display

Unit Time

Modes

Current

 

Display

Temperatures

Pressures

Discrete

Discrete

 

On/Off

(COOL)

(DISP)

(TIME)

(MODE)

(CRNT)

 

(VIEW)

(UNIT)

(PRC.A)

(GEN.I)

(GEN.O)

 

(TEST)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Machine

Unit

Ckt A

Ckt B

Head

Ckt A/B

Ckt A

Machine

Unit Date

 

Reset

 

Hours/Starts

Outputs

Temperatures

Pressures

Pressure

 

Alarms

 

(CRCT)

(CIR.A)

(UNIT)

(DATE)

 

 

(RUN)

(OUTS)

(CIR.A)

(PRC.B)

(HEAD)

 

(RCRN)

 

 

 

 

 

 

 

Compressor

Ckt A Comp

Ckt B

 

Brine

Unit

 

 

Daylight

 

Alarm

 

 

Freeze-

Ckt B

Options 1

Saving

 

 

Run Hours

Tests

Temperatures

 

Analog

 

History

 

 

point

(CIR.B)

(OPT1)

Time

 

 

(HOUR)

(CMPA)

(CIR.B)

 

(4-20)

 

(HIST)

 

 

(FRZ)

 

 

(DST)

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

Ckt B Comp

 

 

 

 

 

Options 2

Schedule

 

 

 

Starts

Tests

 

 

 

 

 

Number

 

 

SUB-MODE

 

 

 

 

 

(OPT2)

 

 

(STRT)

(CMPB)

 

 

 

 

 

(SCH.N)

 

 

 

 

 

 

 

 

 

 

 

 

Pump Maint.

 

 

 

 

 

 

Temperature

Local

 

 

 

 

 

 

 

 

 

Reset

Schedule

 

 

 

(PM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(RSET)

(SCH.L)

 

 

 

 

 

 

 

 

 

 

 

 

 

Software

 

 

 

 

 

 

Set Point

Schedule

 

 

 

Version

 

 

 

 

 

 

Select

Override

 

 

 

(VERS)

 

 

 

 

 

 

(SLCT)

(OVR)

 

 

 

 

 

 

 

 

 

 

Service

 

 

 

 

 

 

 

 

 

 

 

Configuration

 

 

 

 

 

 

 

 

 

 

 

(SERV)

 

 

 

 

 

 

 

 

 

 

 

Broadcast

 

 

 

 

 

 

 

 

 

 

 

Configuration

 

 

 

 

 

 

 

 

 

 

 

(BCST)

 

 

 

LEGEND

 

 

 

 

 

For example, using the language selection item:

 

 

Ckt — Circuit

 

 

 

 

 

Language Selection (LANG) [Configuration, DISP]

 

 

*Throughout this text, the location of items in the menu structure will be described in the following format:

Item Expansion (ITEM) [Mode Name, Sub-mode Name]

26

Page 25 Page 27
Image 26
Page 25 Page 27
Contents SAFETY CONSIDERATIONS CONTENTS GENERALSterlco Comfort Network SCN Interface — MAJOR SYSTEM COMPONENTSControl Module Communication Table 1 — Unit SizesTable 2 — Thermistor Designations Table 3 — Status SwitchesTable 5 - SCN Communication Bus Wiring Table 4 - Output RelaysLEGEND FOR FIG. Page Page Fig. 3 — Wiring Schematic 30RA010-018 30RA010-018AQUA SNAPSEE NOTE SEE NOTE AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 3 - Wiring Schematic 30RA010-018cont Fig. 4 - Wiring Schematic 30RA022-030 30RA022-030AQUA SNAPFig. 4 - Wiring Schematic 30RA022-030cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 5 — Wiring Schematic 30RA032-040 30RA032-040AQUA SNAPFig. 5 — Wiring Schematic 30RA032-040cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 6 — Wiring Schematic 30RA042-055 30RA042-055AQUA SNAPFig. 6 — Wiring Schematic 30RA042-055cont AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICREMOTE CONTACT SW1 OFF ENABLE OFF SW2 ON Fig. 7 — Main Base BoardESCAPEENTER MODEFig. 9 — Typical Space Temperature Sensor Wiring Fig. 11 - Energy Management Module CEPL130351100/100 Fig. 12 — Deadband Multiplier Fig. 14 — 30RA Condenser Fan Sequence Fig. 13 — Operating Envelope forR-22Maneurop Compressor Cooling Set Point Select Table 8 — Control Methods and Cooling Set Points Service Test See Table 11 — Both main powerand control circuit power must be on Fig. 16 — Scrolling Marquee DisplayOptional Factory-InstalledHydronic Package — •Cooler Pump Control CPC Configuration, OPT1 ON Fig. 17 — Dual Chiller Thermistor Location Table 9 — Marquee Display Menu StructureTable 10 — Run Status Mode and Sub-ModeDirectory SUB-MODE Table 12 - Temperature Mode and Sub-ModeDirectory Table 15 — Inputs Mode and Sub-ModeDirectory Table 13 — Pressure Mode and Sub-ModeDirectoryTable 14 — Set Point and Sub-ModeDirectory KEYPAD Table 16 — Outputs Mode and Sub-ModeDirectorySUB-MODE DISPLAYITEM SUB-MODEKEYPAD DISPLAYITEM SUB-MODEKEYPAD DISPLAYTable 18 — Time Clock Mode and Sub-ModeDirectory PER.3 SUB-MODE Table 20 — Alarms Mode and Sub-ModeDirectory Table 19 — Operating Mode and Sub-ModeDirectoryKEYPAD ENTRY SUB-MODEITEM DISPLAYRSET DISP Table 23 — Operating Modes Table 24 — Example of Reading and Clearing Alarms Table 25A — 4-20mA ResetTable 26B — Configuring Return Temperature Reset Fig. 19 — Outdoor-AirTemperature Reset Fig. 18 — Standard Chilled FluidTemperature Control — No Reset Fig. 20 — Space Temperature ResetFig. 21A — 4- to 20-mADemand Limiting Fig. 21B — Cooling Set Point 4 to 20 mATROUBLESHOOTING Table 27 — Configuring Demand Limitand fluid tubing Table 28 — TroubleshootingRecommended that system be filled with an appro Fig. 22 — Component Arrangement — 30RA010-030 FU — Fuse GND — GroundFig. 23 — Component Arrangement — 30RA032-040 FU — Fuse GND — GroundFig. 24 — Component Arrangement — 30RA042-055 FU — Fuse GND — GroundNOTES LEGEND Table 29 — Alarm and Alert Codes Table 29 - Alarm and Alert Codes cont Table 29 — Alarm and Alert Codes cont ALARMTable 29 — Alarm and Alert Codes cont ALARMTable 29 — Alarm and Alert Codes cont ALARMTable 30 - Unit Torque Specification SERVICECompressor Replacement Refer to Fig Electronic ComponentsFig. 29 — Compressor Location — 30RA010-030 Fig. 28 — Compressor WiringFig. 27 — Typical Compressor Mounting — All Sizes Fig. 30 — Compressor Location — 30RA032-055Condenser Section and Coils Table 31 - Oil ChargeFig. 32 — Condenser-FanMounting Fig. 31 — 30RA Access PanelsCheck Refrigerant Feed Components Fig. 33 — Condenser-FanPosition Standard FanCompressor and Unit Protective Devices Table 32 — Factory Settings, High-PressureSwitch Fixed Check Unit SafetiesCOOLER FREEZE-UPPROTECTION TEMP TEMP For Thermistor T10 For Thermistor T10 Fig. 36 — Thermistor Connections to Main Base Board, J8 ConnectorFig. 35 — Fluid-SideTemperature Sensors T1 and T2 PROGRAMMING Mode •P51: SOFTWARE version Table 37 - Fault Codes•P50: FAULT HISTORY — Last 8 faults PARAMETERS Table 39 — Replacement Modules PRE-START-UP MAINTENANCEMinimum Loop Volume System CheckOperating Limitations Standard 30RA Units OPERATION SEQUENCETable 41 — Temperature Limits for CIRCADIO Circuit A Discrete Inputs/Outputs APPENDIX ASCN Tables A_UNIT General Unit Parameters CIRCA_AN Circuit A Analog ParametersOPTIONS Unit Parameters CIRCBDIO Circuit B Discrete Inputs/OutputsCIRCB_AN Circuit B Analog Parameters DUALCHIL Dual Chiller Configuration Settings ALARMDEF Alarm Definition TableDISPLAY Marquee Display SETUP BRODEFS Broadcast POC Definition TableOPTIONS1 Options 1 Configuration OPTIONS2 Options 2 ConfigurationSETPOINT SCHEDOVR Timed Override SetupRESETCON Temperature Reset and Demand Limit MAINTENANCE ALARMS: Maintenance DisplayUNIT CURRMODS: Maintenance Display DUALCHIL: Maintenance DisplayLEARNFNS Maintenance Display LOADFACT: Maintenance DisplayPM-STRN Maintenance Display PM-COIL:Maintenance DisplayPM-PUMP:Maintenance Display RUNTEST: Maintenance Display VERSIONS: Maintenance Display STRTHOUR Maintenance DisplayTESTMODE: Maintenance Display WSMDEFME: Maintenance Display AND MANUAL STARTERS FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX B AND MANUAL STARTERS cont FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX C DataPort, DataLink, BAClink Object DefinitionOPTIONS SETPOINTII. Preliminary Equipment Check START-UPCHECKLIST FOR 30RA LIQUID CHILLERRemove and use for Job File I.Project Information Design InformationIII. Unit Start-Up Start and Operate Machine. Complete the FollowingCL-3 CL-4 Record Software Versions MODE — RUN STATUSCOMMENTS III.Unit Start-Upcont UNIT Configuration SettingsOPTIONS1 Options Configuration III.Unit Start-Upcont OPTIONS2 Options ConfigurationRSET Reset Configuration Settings CL-6SETPOINT SLCT Setpoint and Ramp Load ConfigurationIII.Unit Start-Upcont CL-7Service Test Mode and Sub-ModeDirectory III.Unit Start-Upcont
Top Page Image Contents