Controls, Start-Up, Operation, Service and Troubleshooting

1 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring No. 04-53300125-01 Printed in 30RB-7 TPg 111151-14 Replaces: 30RB-6 TControls, Start-Up, Operation, Serviceand TroubleshootingCONTENTSPageSAFETY CONSIDERATIONS.. 2,3 GENERAL .. 3-5 Conventions Used in This Manual..3 Basic control Usage..4 SCROLLING MARQUEE DISPLAY ACCESSORY NAVIGATOR DISPLAY MODULECONTROLS.. 6-43 General..6 Main Base Board (MBB) ..6 Scroll Protection Module (SPM).

2 8 Electronic Expansion Valve (EXV) Board ..9 Fan Boards..10 Reverse Rotation Board ..15 DIAL SETTINGS PHASE REVERSAL PROTECTION PHASE LOSS AND UNDER-VOLTAGEPROTECTIONE nable-Off-Remote Contact Switch..15 Emergency On/Off Switch ..15 Energy Management Module (EMM) ..15 Energy Management ModuleHeat Reclaim (EMM HR)..16 Local Equipment Network ..17 Board Addresses..17 control Module Communication..17 RED LED GREEN LED YELLOW LEDC arrier Comfort Network (CCN) Interface..17 Configuration Options.

3 18 MINIMUM LOAD control RAMP LOADING MINUTES OFF TIMEDual Chiller control ..18 Capacity control ..21 BRINE CHILLER OPERATION CAPACITY control OVERRIDESHead Pressure control ..25 STANDARD UNIT LOW AMBIENT TEMPERATURE HEAD PRESSURE control OPTIONHigh-Efficiency VariableCondenser Fans (HEVCF) ..27 Cooler Pump control ..29 Machine control Methods ..30 SWITCH control TIME SCHEDULE CCN control UNIT RUN STATUSC ooling Set Point Selection ..31 SET POINT 1 SET POINT 2 4 TO 20 mA INPUT DUAL SWITCH SET POINT OCCUPANCYT emperature Reset.

4 32 PageDemand Limit .. 40 SWITCH CONTROLLED EXTERNALLY POWERED (4 to 20 mA Controlled) CCN CONTROLLEDR emote Alarm and Alert Relays .. 42 Broadcast Configuration .. 42 Alarm control .. 42 PRE-START-UP .. 43 System Check.. 43 START-UP.. 43-45 Actual Start-Up.. 43 Operating Limitations .. 44 TEMPERATURES VOLTAGE MINIMUM FLUID LOOP VOLUME FLOW RATE REQUIREMENTSOPERATION.. 45-52 Sequence of Operation.. 45 Dual Chiller Sequence of Operation .. 45 Operating Modes.. 46 Optional Heat Reclaim Module.

5 48 Service .. 53-61 Electronic Expansion Valve (EXV).. 53 EXV Troubleshooting PROCEDUREC ooler.. 56 FREEZE PROTECTION LOW FLUID TEMPERATURE LOSS OF FLUID FLOW PROTECTION TUBE PLUGGING RETUBING TIGHTENING COOLER HEAD BOLTS CHILLED WATER FLOW SWITCHRTPF Condenser Coil Maintenance and CleaningRecommendations.. 57 REMOVE SURFACE LOADED FIBERS PERIODIC CLEAN WATER RINSE ROUTINE CLEANING OF COIL SURFACESMCHX Condenser Coil Maintenance and CleaningRecommendations.. 60 Condenser Fans.

6 60 Refrigerant Circuit.. 60 LEAK TESTING REFRIGERANT CHARGES afety Devices .. 60 COMPRESSOR PROTECTION CRANKCASE HEATERSR elief Devices.. 60 HIGH-SIDE PROTECTION LOW-SIDE PROTECTIONC ompressors.. 61 COMPRESSOR REPLACEMENT OIL CHARGE SYSTEM BURNOUT CLEANUP PROCEDUREMAINTENANCE.. 61,62 Recommended Maintenance Schedule.. 61 AquaSnap 30RB060-390 Air-Cooled Chillers and30RB080-390 Air-Cooled Chillers withGreenspeed Intelligence2 CONTENTS (cont)PageTROUBLESHOOTING .. 62-93 Alarms and Alerts.

7 62 DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSESS ensors.. 78 Thermistors.. 78 COOLER ENTERING FLUID SENSOR COOLER LEAVING FLUID SENSOR DUAL CHILLER LWT COMPRESSOR SUCTION GAS TEMPERATURE OUTDOOR AIR TEMPERATURE CONDENSER LEAVING FLUID SENSOR CONDENSER ENTERING FLUID SENSOR SUBCOOLED CONDENSER GAS TEMPERATURE REMOTE SPACE TEMPERATURET ransducers .. 79 Service Test .. 83 APPENDIX A LOCAL DISPLAY TABLES.. 94-106 APPENDIX B CCN TABLES.. 107-121 APPENDIX C CCN ALARM DESCRIPTION.

8 122-125 APPENDIX D R-410A PRESSURE CHART .. 126 APPENDIX E MAINTENANCE SUMMARY ANDLOG SHEETS .. 127-130 APPENDIX F BACNET COMMUNICATIONOPTION .. 131-142 APPENDIX G SIEMENS OR SCHNEIDER LOWAMBIENT DRIVES .. 143-148 INDEX.. 149,150 START-UP CHECKLIST FOR 30 RBLIQUID CHILLER .. CL-1 to CL-10 SAFETY CONSIDERATIONSI nstalling, starting up, and servicing this equipment can behazardous due to system pressures, electrical components, andequipment location (roof, elevated structures, etc.)

9 Onlytrained, qualified installers and Service mechanics shouldinstall, start up, and Service this equipment. When working onthis equipment, observe precautions in the literature, and ontags, stickers, and labels attached to the equipment, and anyother safety precautions that apply. Follow all safety safety glasses and work gloves. Use care in handling,rigging, and setting this equipment, and in handling all electri-cal components. WARNINGE lectrical shock can cause personal injury and death.

10 Shutoff all power to this equipment during installation. Theremay be more than one disconnect switch. Tag all discon-nect locations to alert others not to restore power until workis NOT VENT refrigerant relief valves within a from relief valves must be vented outdoors inaccordance with the latest edition of ANSI/ASHRAE(American National Standards Institute/American Societyof Heating, Refrigerating and Air-Conditioning Engineers)15 (Safety Code for Mechanical Refrigeration).