Watts Aerco Benchmark Series Operation And Service Manual page 3

Benchmark Platinum-Edge: Operation-Service Manual
CONTENTS
5.3.2 HIGH GAS PRESSURE TEST: BMK 3000 - 6000 Only ........................................................................................ 59
5.4 LOW WATER LEVEL FAULT TEST ..................................................................................................... 62
5.5 WATER TEMPERATURE FAULT TEST .............................................................................................. 63
5.6 INTERLOCK TESTS ............................................................................................................................. 64
5.6.1 Remote Interlock Test..................................................................................................................................... 64
5.6.2 Delayed Interlock Test .................................................................................................................................... 64
5.7 FLAME FAULT TEST ............................................................................................................................ 65
5.8 AIR FLOW FAULT TESTS - BLOWER PROOF & BLOCKED INLET SWITCHES .............................. 66
5.8.1 Blower Proof Switch Test ................................................................................................................................ 66
5.8.2 Blocked Inlet Switch Test ................................................................................................................................ 68
5.9 SSOV PROOF OF CLOSURE SWITCH CHECK ................................................................................. 69
5.10 PURGE SWITCH OPEN DURING PURGE ........................................................................................ 70
5.11 IGNITION SWITCH OPEN DURING IGNITION ................................................................................. 72
5.12 SAFETY PRESSURE RELIEF VALVE TEST ..................................................................................... 72
SECTION 6: STANDALONE MODES OF OPERATION ......................................... 73
6.1 OUTDOOR RESET MODE ................................................................................................................... 73
6.1.1 Outdoor Air Temperature Sensor Installation ................................................................................................ 73
6.1.2 Outdoor Reset Mode Startup ......................................................................................................................... 74
6.2 CONSTANT SETPOINT MODE ........................................................................................................... 75
6.3 REMOTE SETPOINT MODE ................................................................................................................ 75
6.4 DIRECT DRIVE MODES....................................................................................................................... 76
6.5 AERCO CONTROL SYSTEM (ACS) .................................................................................................... 77
6.6 COMBINATION CONTROL SYSTEM (CCS) ....................................................................................... 78
6.6.1 Combination Control System Field Wiring ...................................................................................................... 79
6.6.2 Combination Control System Setup and Startup ............................................................................................ 79
SECTION 7: BOILER SEQUENCING TECHNOLOGY ............................................ 81
7.1 INTRODUCTION ................................................................................................................................... 81
7.1.1 Installation Notes............................................................................................................................................ 82
7.2 BST QUICK START CHART ................................................................................................................ 82
7.3 BST IMPLEMENTATION INSTRUCTION ............................................................................................ 83
7.3.1 Option 1 Constant Setpoint: Direct Wired Header Sensor ............................................................................. 83
7.3.2 Option 2 Constant Setpoint: Modbus Wired Header Sensor .......................................................................... 85
7.3.3 Option 3 Outdoor Reset: Direct Wired Header Sensor & Direct Wired Outdoor Sensor ............................... 87
7.3.4 Option 4 Outdoor Reset: Modbus Header Sensor & Modbus Outdoor Sensor .............................................. 89
7.3.5 Option 5 Remote Setpoint: Direct Wired Header Sensor & 4-20ma Setpoint Drive ...................................... 91
7.3.6 Option 6 Remote Setpoint: Direct Wired Header Sensor & Modbus Setpoint Drive ..................................... 93
7.3.7 Option 7 Remote Setpoint: Modbus Header Sensor & 4-20ma Setpoint Drive ............................................. 95
7.3.8 Option 8 Remote Setpoint: MODBUS Header Sensor & MODBUS Setpoint Drive ......................................... 97
SECTION 8: MAINTENANCE ............................................................................ 99
8.1 MAINTENANCE SCHEDULE ............................................................................................................... 99
8.2 IGNITER-INJECTOR - BMK 750 - 3000 ............................................................................................ 100
8.3 PILOT IGNITION ROD - BMK 5000 & 6000 ...................................................................................... 102
8.4 FLAME DETECTOR ........................................................................................................................... 102
8.5 O SENSOR ........................................................................................................................................ 103
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8.5.1 Air Eductor Air Pump Maintenance - BMK 5000 & 6000 ........................................................................... 104
8.6 SAFETY DEVICE TESTING ............................................................................................................... 105
8.7 BURNER INSPECTION ...................................................................................................................... 105
8.8 CONDENSATE DRAIN TRAP ............................................................................................................ 108
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 3 of 146