Owner manual

Benchmark 1500DF - 2000DF Boilers
Installation, Operation & Maintenance Manual (IOMM)
OMM-0098_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 5 of 196
GF-144 Ph.: 800-526-0288 04/01/2014
6.6.2 Delayed Interlock Test .................................................................................................................................... 83
6.7 FLAME FAULT TESTS ......................................................................................................................... 83
6.8 AIR FLOW FAULT TESTS .................................................................................................................... 85
6.8.1 Blower Proof Switch Test ................................................................................................................................ 85
6.8.2 Blocked Inlet Switch Test ................................................................................................................................ 85
6.9 SSOV PROOF OF CLOSURE SWITCH ............................................................................................... 87
6.10 PURGE SWITCH OPEN DURING PURGE ........................................................................................ 88
6.11 IGNITION SWITCH OPEN DURING IGNITION ................................................................................. 89
6.12 SAFETY PRESSURE RELIEF VALVE TEST ..................................................................................... 90
CHAPTER 7. MAINTENANCE ......................................................................................................... 91
7.1 MAINTENANCE SCHEDULE ............................................................................................................... 91
7.2 IGNITER-INJECTOR ............................................................................................................................ 92
7.3 FLAME DETECTOR ............................................................................................................................. 94
7.4 O
2
SENSOR 95
7.5 SAFETY DEVICE TESTING ................................................................................................................. 95
7.6 BURNER ASSEMBLY INSPECTION ................................................................................................... 96
7.7 CONDENSATE DRAIN TRAP ............................................................................................................ 100
7.8 AIR FILTER CLEANING & REPLACEMENT ...................................................................................... 101
7.9 SHUTTING THE BOILER DOWN FOR AN EXTENDED PERIOD OF TIME ..................................... 102
7.10 PLACING THE BOILER BACK IN SERVICE AFTER A PROLONGED SHUTDOWN ..................... 102
CHAPTER 8. TROUBLESHOOTING GUIDE ............................................................................. 103
8.1 INTRODUCTION ................................................................................................................................. 103
8.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES .................................................. 115
CHAPTER 9. RS-232 COMMUNICATION................................................................................. 117
9.1 INTRODUCTION ................................................................................................................................. 117
9.1.1 Acquiring the PuTTY Application .................................................................................................................. 117
9.1.2 Running a Command on a Remote Machine Using PuTTY ........................................................................... 118
9.2 RS-232 COMMUNICATION SETUP ................................................................................................... 119
9.3 MENU PROCESSING UTILIZING RS-232 COMMUNICATION ........................................................ 119
9.4 DATA LOGGING ................................................................................................................................. 120
9.4.1 Fault Log ....................................................................................................................................................... 121
9.4.2 Operation Time Log ...................................................................................................................................... 121
9.4.3 Sensor Log ..................................................................................................................................................... 122
CHAPTER 10. BOILER SEQUENCING TECHNOLOGY ............................................................. 123
10.1 INTRODUCTION ............................................................................................................................... 123
10.2 AERCO BST QUICK START CHART ............................................................................................... 124
10.3 BST IMPLEMENTATION INSTRUCTION ........................................................................................ 125
10.3.1 Option 1 - Constant Setpoint with DIRECT Wired Header Sensor .............................................................. 125
10.3.2 Option 2 - Constant Setpoint with MODBUS Wired Header Sensor ........................................................... 126
10.3.3 Option 3 - Outdoor Reset with DIRECT WIRED Header Sensor AND DIRECT WIRED Outdoor Sensor ....... 127
10.3.4 Option 4 - Outdoor Reset with MODBUS Header Sensor AND MODBUS Outdoor Sensor ........................ 129
10.3.5 Option 5 - Remote Setpoint with DIRECT WIRED Header Sensor AND 4-20ma Setpoint Drive ................. 131
10.3.6 Option 6 - Remote Setpoint with DIRECT WIRED Header Sensor AND MODBUS Setpoint Drive ............... 132
10.3.7 Option 7 - Remote Setpoint with MODBUS Header Sensor AND 4-20ma Setpoint Drive .......................... 133
10.3.8 Option 8 - Remote Setpoint with MODBUS Header Sensor AND MODBUS Setpoint Drive ....................... 135
APPENDIX A: BOILER MENU ITEM DESCRIPTIONS ............................................................. 137
APPENDIX B: STARTUP, STATUS & DISPLAY MESSAGES .................................................. 145
APPENDIX C: SENSOR RESISTANCE/VOLTAGE CHART ...................................................... 149
APPENDIX D: BOILER DEFAULT SETTINGS ............................................................................ 151