AERCO BMK 2.0 LN Natural Gas (SN G-11-1861 and above) User Manual
User manual, Benchmark 2.0ln, Low nox boiler
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Benchmark 2.0LN Boiler
GF-123
Installation, Operation & Maintenance Manual
OMM-0046_0E
PR1 08/20/12
AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288
Page 1 of 170
USER MANUAL
Natural Gas or Propane Fired
Modulating, Condensing,
Forced Draft, Hot Water Boiler
2,000,000 BTU/H Input
Applicable for Serial Numbers:
G-11-1861 and above.
Revised 08/20/2012
Benchmark 2.0LN Low NOx Boiler
Installation, Operation, and Maintenance
Benchmark 2.0LN
Low NOx Boiler
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Table of contents
Document Outline
- CHAPTER 1: SAFETY PRECAUTIONS
- CHAPTER 2. INSTALLATION
- 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 6. SAFETY DEVICE TESTING
- 6.1 TESTING OF SAFETY DEVICES
- 6.2 LOW GAS PRESSURE FAULT TEST
- 6.3 HIGH GAS PRESSURE TEST
- 6.4 LOW WATER LEVEL FAULT TEST
- 6.5 WATER TEMPERATURE FAULT TEST
- 6.6 INTERLOCK TESTS
- 6.7 FLAME FAULT TESTS
- 6.8 AIR FLOW FAULT TESTS
- 6.9 SSOV PROOF OF CLOSURE SWITCH
- 6.10 PURGE SWITCH OPEN DURING PURGE
- 6.11 IGNITION SWITCH OPEN DURING IGNITION
- 6.12 SAFETY PRESSURE RELIEF VALVE TEST
- CHAPTER 7. MAINTENANCE
- 7.1 MAINTENANCE SCHEDULE
- 7.2 IGNITER-INJECTOR
- 7.3 FLAME DETECTOR
- 7.4 COMBUSTION CALIBRATION & RSI REGULATOR ADJUSTMENT
- 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: RECOMMENDED SPARE PARTS LISTS
- STANDARD WARRANTY: BENCHMARK GAS-FIRED HYDRONIC BOILER