Owner manual

Page 6 of 152 PR2: 05/09/12
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
CHAPTER 8 TROUBLESHOOTING GUIDE ................................................................... 83
8.1 INTRODUCTION ................................................................................................. 83
8.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES .................... 93
CHAPTER 9 RS232 COMMUNICATION ......................................................................... 97
9.1 INTRODUCTION ................................................................................................. 97
9.2 RS232 COMMUNICATION SETUP ..................................................................... 97
9.3 MENU PROCESSING UTILIZING RS232 COMMUNICATION ........................... 97
9.4 DATA LOGGING ................................................................................................. 98
Fault Log .................................................................................................................. 98 9.4.1
Operation Time Log ................................................................................................. 99 9.4.2
Sensor Log ............................................................................................................... 99 9.4.3
APPENDIX A: MENU ITEM DESCRIPTIONS .............................................................. 101
APPENDIX B: STARTUP, STATUS AND FAULT MESSAGES ................................ 107
APPENDIX C: SENSOR TEMPERATURE RESISTANCE ......................................... 110
APPENDIX D: INDOOR/OUTDOOR RESET RATIO CHARTS................................. 111
APPENDIX E: BOILER DEFAULT SETTINGS ............................................................ 115
APPENDIX F: PART AND DIMENSIONAL DRAWINGS ........................................... 117
APPENDIX G: PIPING DRAWINGS ............................................................................... 133
APPENDIX H: WIRING SCHEMATICS .......................................................................... 139
APPENDIX I: RECOMMENDED PERIODIC TESTING CHECK LIST .................... 145
APPENDIX J: BENCHMARK CONTROL PANEL FEATURES ................................ 146
APPENDIX K: RECOMMENDED SPARE PARTS LISTS .......................................... 149
STANDARD WARRANTY: Benchmark Gas-Fired Hydronic Boiler .................... 150