AERCO BMK 1.5 LN July 2011 - Manual (Page 5)

PR2: 05/09/12 Page 5 of 152
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Setting the Setpoint .................................................................................................. 54 5.3.1
5.4 REMOTE SETPOINT MODES ............................................................................ 55
Remote Setpoint Field Wiring ................................................................................. 55 5.4.1
Remote Setpoint Startup .......................................................................................... 56 5.4.2
5.5 DIRECT DRIVE MODES ..................................................................................... 56
Direct Drive Field Wiring ........................................................................................ 56 5.5.1
Direct Drive Startup ................................................................................................. 57 5.5.2
5.6 BOILER MANAGEMENT SYSTEM (BMS) .......................................................... 57
BMS External Field Wiring ..................................................................................... 57 5.6.1
BMS Setup and Startup ............................................................................................ 58 5.6.2
5.7 COMBINATION CONTROL SYSTEM (CCS) ...................................................... 58
Combination Control System Field Wiring ............................................................. 58 5.7.1
Combination Control System Setup and Startup ..................................................... 59 5.7.2
CHAPTER 6 SAFETY DEVICE TESTING ....................................................................... 61
6.1 TESTING OF SAFETY DEVICES ....................................................................... 61
6.2 LOW GAS PRESSURE FAULT TEST ................................................................. 61
6.3 HIGH GAS PRESSURE TEST ............................................................................ 62
6.4 LOW WATER LEVEL FAULT TEST .................................................................... 63
6.5 WATER TEMPERATURE FAULT TEST ............................................................. 63
6.6 INTERLOCK TESTS ............................................................................................ 65
REMOTE INTERLOCK ......................................................................................... 65 6.6.1
DELAYED INTERLOCK ....................................................................................... 65 6.6.2
6.7 FLAME FAULT TESTs ........................................................................................ 65
6.8 AIR FLOW FAULT TESTS .................................................................................. 67
6.9 SSOV PROOF OF CLOSURE SWITCH .............................................................. 67
6.10 PURGE SWITCH OPEN DURING PURGE ....................................................... 68
6.11 IGNITION SWITCH OPEN DURING IGNITION ................................................ 69
6.12 SAFETY PRESSURE RELIEF VALVE TEST .................................................... 70
CHAPTER 7 MAINTENANCE ............................................................................................ 71
7.1 MAINTENANCE SCHEDULE .............................................................................. 71
7.2 IGNITER-INJECTOR ........................................................................................... 72
7.3 FLAME DETECTOR ............................................................................................ 74
7.4 COMBUSTION CALIBRATION & RSI REGULATOR ADJUSTMENT ................. 74
RSI Regulator Pressure ............................................................................................ 74 7.4.1
7.5 SAFETY DEVICE TESTING ................................................................................ 77
7.6 BURNER ASSEMBLY INSPECTION .................................................................. 77
7.7 CONDENSATE DRAIN TRAP ............................................................................. 80
7.8 SHUTTING THE BOILER DOWN FOR AN EXTENDED PERIOD OF TIME ....... 81
7.9 PLACING THE BOILER BACK IN SERVICE AFTER A PROLONGED SHUTDOWN . 81