Aerco BOILER MANAGEMENT SYSTEM II 5R5-384, Installation, Operation & Maintenance Instructions Manual

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CONTENTS
TABLE OF CONTENTS (cont.)
LOAD START PCT ........................................................................................................................................ 3-15
LOAD STOP PCT ........................................................................................................................................... 3-15
RESET DEFAULTS........................................................................................................................................ 3-15
3.13 BMS II QUICK-START GUIDE ................................................................................................................ 3-15
CONSTANT SETPT MODE (Default) ........................................................................................................... 3-16
REMOTE SETPT MODE ............................................................................................................................... 3-16
OUTDOOR RESET MODE............................................................................................................................ 3-17
CHAPTER 4 - PROGRAMMING BMS II OPERATING MODES..................................................................... 4-1
4.1 INTRODUCTION ........................................................................................................................................... 4-1
4.2 OUTDOOR RESET MODE............................................................................................................................ 4-1
Selecting Outdoor Reset Mode .......................................................................................................................... 4-1
Determining Reset Schedule.............................................................................................................................. 4-2
Entering Reset Ratio And Building Reference Temperature ............................................................................. 4-2
Selecting Boiler Operating Mode ...................................................................................................................... 4-2
Entering System Start Temperature ................................................................................................................... 4-3
4.3 REMOTE SETPOINT MODE ........................................................................................................................ 4-3
Selecting Remote Setpoint Mode ...................................................................................................................... 4-3
Entering Header High Limit And Low Limit Temperatures ............................................................................. 4-4
Selecting Remote Signal Type........................................................................................................................... 4-4
Selecting Boiler Operating Mode ...................................................................................................................... 4-5
4.4 CONSTANT SETPOINT MODE ................................................................................................................... 4-5
Selecting Constant Setpoint Mode..................................................................................................................... 4-5
Selecting Internal Setpoint Temperature ........................................................................................................... 4-6
Selecting Boiler Operating Mode ...................................................................................................................... 4-6
4.5 “TEMP AND LOAD” OPTION...................................................................................................................... 4-6
4.6 “START ENABLED” OPTION...................................................................................................................... 4-7
4.7 SYSTEM INITIALIZATION and polling....................................................................................................... 4-7
4.8 TESTING THE SYSTEM ............................................................................................................................... 4-7
CHAPTER 5 - TROUBLESHOOTING................................................................................................................ 5-1
5.1 FAULT MESSAGES & COMMON PROBLEMS ......................................................................................... 5-1
APPENDIX A - BMS MENUS A-1
APPENDIX B - STATUS AND FAULT MESSAGES B-1
APPENDIX C - METHODS FOR DETERMINING RESET SCHEDULE C-1
APPENDIX D - NTC TEMPERATURE RESISTANCE CHART D-1
APPENDIX E - BMS II WIRING DIAGRAM E-1
APPENDIX F - BMS II PARTS AND ACCESSORIES F-1
APPENDIX G - PROGRAMMING THE BMS II USING RS232 COMMUNICATION G-1
APPENDIX H - BMS II MODBUS ADDRESS ASSIGNMENTS H-1
APPENDIX I - BOILER START AND BOILER STOP LEVELS I-1
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