Aerco Benchmark 1500 - Page 5

Benchmark 1500 - 2000 Boilers
Installation, Operation & Maintenance Manual (IOMM)
OMM-0097_0D AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 5 of 188
GF-142 Ph.: 800-526-0288
6.8.2 Blocked Inlet Switch Test ................................................................................................................................ 79
6.9 SSOV PROOF OF CLOSURE SWITCH ............................................................................................... 81
6.10 PURGE SWITCH OPEN DURING PURGE ........................................................................................ 82
6.11 IGNITION SWITCH OPEN DURING IGNITION ................................................................................. 83
6.12 SAFETY PRESSURE RELIEF VALVE TEST ..................................................................................... 84
CHAPTER 7. MAINTENANCE ......................................................................................................... 85
7.1 MAINTENANCE SCHEDULE ............................................................................................................... 85
7.2 IGNITER-INJECTOR ............................................................................................................................ 86
7.3 FLAME DETECTOR ............................................................................................................................. 88
7.4 O
2
SENSOR 89
7.5 SAFETY DEVICE TESTING ................................................................................................................. 89
7.6 BURNER ASSEMBLY INSPECTION ................................................................................................... 90
7.7 CONDENSATE DRAIN TRAP .............................................................................................................. 94
7.8 AIR FILTER CLEANING & REPLACEMENT ........................................................................................ 95
7.9 SHUTTING THE BOILER DOWN FOR AN EXTENDED PERIOD OF TIME ....................................... 96
7.10 PLACING THE BOILER BACK IN SERVICE AFTER A PROLONGED SHUTDOWN ....................... 96
CHAPTER 8. TROUBLESHOOTING GUIDE ................................................................................ 97
8.1 INTRODUCTION ................................................................................................................................... 97
8.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES .................................................. 109
CHAPTER 9. RS-232 COMMUNICATION................................................................................. 111
9.1 INTRODUCTION ................................................................................................................................. 111
9.1.1 Acquiring the PuTTY Application .................................................................................................................. 111
9.1.2 Logging on to a Remote Machine Using PuTTY ............................................................................................ 111
9.1.3 Running a Command on a Remote Machine Using PuTTY ........................................................................... 112
9.2 RS-232 COMMUNICATION SETUP ................................................................................................... 113
9.3 MENU PROCESSING UTILIZING RS-232 COMMUNICATION ........................................................ 113
9.4 DATA LOGGING ................................................................................................................................. 114
9.4.1 Fault Log ....................................................................................................................................................... 115
9.4.2 Operation Time Log ...................................................................................................................................... 115
9.4.3 Sensor Log ..................................................................................................................................................... 116
CHAPTER 10. BOILER SEQUENCING TECHNOLOGY ............................................................. 117
10.1 INTRODUCTION ............................................................................................................................... 117
10.2 AERCO BST QUICK START CHART ............................................................................................... 118
10.3 BST IMPLEMENTATION INSTRUCTION ........................................................................................ 119
10.3.1 Option 1 - Constant Setpoint with DIRECT Wired Header Sensor .............................................................. 119
10.3.2 Option 2 - Constant Setpoint with MODBUS Wired Header Sensor ........................................................... 120
10.3.3 Option 3 - Outdoor Reset with DIRECT WIRED Header Sensor AND DIRECT WIRED Outdoor Sensor ....... 121
10.3.4 Option 4 - Outdoor Reset with MODBUS Header Sensor AND MODBUS Outdoor Sensor ........................ 123
10.3.5 Option 5 - Remote Setpoint with DIRECT WIRED Header Sensor AND 4-20ma Setpoint Drive ................. 125
10.3.6 Option 6 - Remote Setpoint with DIRECT WIRED Header Sensor AND MODBUS Setpoint Drive ............... 126
10.3.7 Option 7 - Remote Setpoint with MODBUS Header Sensor AND 4-20ma Setpoint Drive .......................... 127
10.3.8 Option 8 - Remote Setpoint with MODBUS Header Sensor AND MODBUS Setpoint Drive ....................... 129
APPENDIX A: BOILER MENU ITEM DESCRIPTIONS ............................................................. 131
APPENDIX B: STARTUP, STATUS & DISPLAY MESSAGES .................................................. 137
APPENDIX C: SENSOR RESISTANCE/VOLTAGE CHART ...................................................... 141
APPENDIX D: BOILER DEFAULT SETTINGS ............................................................................ 143
APPENDIX E: RECOMMENDED PERIODIC TESTING ............................................................ 145
APPENDIX F: INDOOR/OUTDOOR RESET RATIO CHARTS ............................................... 147
APPENDIX G: DIMENSIONAL AND CLEARANCE DRAWINGS ............................................. 151