AERCO BMK 2.0 LN Dual Fuel Serial G-11-2402 and UP User Manual
User manual, Benchmark 2.0ln dual-fuel, Low nox boiler
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PR2: 04/22/13 Page 1 of 160
Benchmark 2.0LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0052_0E
GF-127
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
USER MANUAL
Modulating, Condensing,
Forced Draft, Hot Water Boiler
2,000,000 BTU/H Input
Applicable for Serial Numbers:
G-11-2402 and above.
Revised: 04/22/2013
Benchmark 2.0LN Low NOx Boiler
Installation, Operation, and Maintenance
Benchmark
2.0LN Dual-Fuel
Low NOx Boiler
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Table of contents
Document Outline
- CHAPTER 1: SAFETY PRECAUTIONS
- CHAPTER 2: INSTALLATION
- CHAPTER 2
- 2.1 INTRODUCTION
- 2.2 RECEIVING THE UNIT
- 2.3 UNPACKING
- 2.4 SITE PREPARATION
- 2.5 SUPPLY AND RETURN PIPING
- 2.6 CONDENSATE DRAIN AND PIPING
- 2.7 GAS SUPPLY PIPING
- 2.8 AC ELECTRICAL POWER WIRING
- 2.9 MODES OF OPERATION AND FIELD CONTROL WIRING
- 2.10 I/O BOX CONNECTIONS
- 2.10.1 Outdoor Sensor In (1)
- 2.10.2 Air Temp. Sensor (2)
- 2.10.3 Analog In (3)
- 2.10.4 B.M.S. (PWM) In (4)
- 2.10.5 Shield (5)
- 2.10.6 mA Out (6)
- 2.10.7 RS-485 Comm (7)
- 2.10.8 TxD, RxD (8)
- 2.10.9 VFD/Blower (9)
- 2.10.10 Exhaust Switch In (11)
- 2.10.11 Interlocks (10, 12)
- 2.10.12 Fault Relay (13)
- 2.10.13 Auxiliary Relay Contacts (14)
- 2.11 FLUE GAS VENT INSTALLATION
- 2.12 COMBUSTION AIR
- 2.13 BENCHMARK PUMP RELAY OPTION
- CHAPTER 3: CONTROL PANEL OPERATION
- CHAPTER 4: INITIAL START-UP
- CHAPTER 5: MODE OF OPERATION
- CHAPTER 5
- CHAPTER 6: SAFETY DEVICE TESTING
- CHAPTER 6
- 6.1 TESTING OF SAFETY DEVICES
- 6.2 NATURAL GAS LOW GAS PRESSURE FAULT TEST
- 6.3 PROPANE LOW GAS PRESSURE FAULT TEST
- 6.4 NATURAL GAS HIGH GAS PRESSURE TEST
- 6.5 PROPANE HIGH GAS PRESSURE TEST
- 6.6 LOW WATER LEVEL FAULT TEST
- 6.7 WATER TEMPERATURE FAULT TEST
- 6.8 INTERLOCK TESTS
- 6.9 FLAME FAULT TESTS
- 6.10 AIR FLOW FAULT TESTS
- 6.11 SSOV PROOF OF CLOSURE SWITCH
- 6.12 IGNITION SWITCH OPEN DURING IGNITION
- 6.13 PURGE SWITCH OPEN DURING PURGE
- 6.14 SAFETY PRESSURE RELIEF VALVE TEST
- CHAPTER 7: MAINTENANCE
- CHAPTER 7
- 7.1 MAINTENANCE SCHEDULE
- 7.2 IGNITER-INJECTOR
- 7.3 FLAME DETECTOR
- 7.4 COMBUSTION CALIBRATION
- 7.5 SAFETY DEVICE TESTING
- 7.6 BURNER ASSEMBLY INSPECTION
- 7.7 CONDENSATE DRAIN TRAP
- 7.8 SHUTTING THE BOILER DOWN FOR AN EXTENDED PERIOD OF TIME
- 7.9 PLACING THE BOILER BACK IN SERVICE AFTER A PROLONGED SHUTDOWN
- CHAPTER 8: TROUBLESHOOTING GUIDE
- CHAPTER 9: RS232 COMMUNICATION
- APPENDIX A: MENU ITEM DESCRIPTIONS
- APPENDIX B: STARTUP, STATUS AND FAULT MESSAGES
- APPENDIX C: SENSOR TEMPERATURE RESISTANCE
- APPENDIX D: INDOOR/OUTDOOR RESET RATIO CHARTS
- APPENDIX E: BOILER DEFAULT SETTINGS
- APPENDIX F: PART AND DIMENSIONAL DRAWINGS
- APPENDIX G: PIPING DRAWINGS
- APPENDIX H: WIRING SCHEMATICS
- APPENDIX I: RECOMMENDED PERIODIC TESTING CHECK LIST
- APPENDIX J: BENCHMARK CONTROL PANEL FEATURES
- APPENDIX K: BMK 2.0 DUAL-FUEL SWITCHOVER INSTRUCTIONS
- APPENDIX L: RECOMMENDED SPARE PARTS LISTS
- STANDARD WARRANTY: Benchmark Gas-Fired Hydronic Boiler