Watts AERCO Benchmark OMM-0136 Operation And Service Manual page 3

Benchmark Platinum-Edge [II]: Operation-Service Manual
CONTENTS
5.2.2 LOW GAS PRESSURE TEST: BMK3000 - 6000 Only ......................................................................................... 58
5.3 HIGH GAS PRESSURE TEST ............................................................................................................. 62
5.3.1 HIGH GAS PRESSURE TEST: BMK750 - 2500 ................................................................................................... 62
5.3.2 HIGH GAS PRESSURE TEST: BMK3000 - 6000 Only ........................................................................................ 64
5.4 LOW WATER LEVEL FAULT TEST ..................................................................................................... 68
5.5 WATER TEMPERATURE FAULT TEST .............................................................................................. 69
5.6 INTERLOCK TESTS ............................................................................................................................. 70
5.6.1 Remote Interlock Test..................................................................................................................................... 70
5.6.2 Delayed Interlock Test .................................................................................................................................... 70
5.7 FLAME FAULT TEST ............................................................................................................................ 71
5.8 AIR FLOW FAULT TESTS - BLOWER PROOF & BLOCKED INLET SWITCHES .............................. 72
5.8.1 Blower Proof Switch Test ................................................................................................................................ 72
5.8.2 Blocked Inlet Switch Test ................................................................................................................................ 74
5.9 SSOV PROOF OF CLOSURE SWITCH CHECK ................................................................................. 75
5.10 PURGE SWITCH OPEN DURING PURGE ........................................................................................ 76
5.11 IGNITION SWITCH OPEN DURING IGNITION ................................................................................. 78
5.12 SAFETY PRESSURE RELIEF VALVE TEST ..................................................................................... 78
SECTION 6: STANDALONE MODES OF OPERATION ......................................... 79
6.1 OUTDOOR RESET MODE ................................................................................................................... 79
6.1.1 Outdoor Air Temperature Sensor Installation ................................................................................................ 79
6.1.2 Outdoor Reset Mode Startup ......................................................................................................................... 80
6.2 CONSTANT SETPOINT MODE ........................................................................................................... 81
6.3 REMOTE SETPOINT MODE ................................................................................................................ 81
6.4 DIRECT DRIVE MODES....................................................................................................................... 82
6.5 AERCO CONTROL SYSTEM (ACS) .................................................................................................... 83
6.6 COMBINATION CONTROL SYSTEM (CCS) ....................................................................................... 84
6.6.1 Combination Control System Field Wiring ...................................................................................................... 85
6.6.2 Combination Control System Setup and Startup ............................................................................................ 85
SECTION 7: BOILER SEQUENCING TECHNOLOGY ............................................ 87
7.1 INTRODUCTION ................................................................................................................................... 87
7.1.1 Installation Notes............................................................................................................................................ 88
7.2 BST QUICK START CHART ................................................................................................................ 88
7.3 BST IMPLEMENTATION INSTRUCTION ............................................................................................ 89
7.3.1 Option 1 Constant Setpoint: Direct Wired Header Temp Sensor ................................................................... 89
7.3.2 Option 2 Constant Setpoint: Modbus Wired Header Temp Sensor................................................................ 91
7.3.3 Option 3 Outdoor Reset: Direct Wired Header Temp Sensor & Direct Wired Outdoor Temp Sensor ........... 93
7.3.4 Option 4 Outdoor Reset: Modbus Header Temp Sensor & Modbus Outdoor Temp Sensor ......................... 95
7.3.5 Option 5 Remote Setpoint: Direct Wired Header Temp Sensor & 4-20ma Setpoint Drive ............................ 97
7.3.6 Option 6 Remote Setpoint: Direct Wired Header Temp Sensor & Modbus Setpoint Drive ........................... 99
7.3.7 Option 7 Remote Setpoint: Modbus Header Temp Sensor & 4-20ma Setpoint Drive ................................. 101
7.3.8 Option 8 Remote Setpoint: MODBUS Header Temp Sensor & MODBUS Setpoint Drive ............................. 103
SECTION 8: MAINTENANCE .......................................................................... 105
8.1 MAINTENANCE SCHEDULE ............................................................................................................. 105
8.2 IGNITER-INJECTOR - BMK750 - 4000 ............................................................................................. 106
8.3 PILOT IGNITION ROD - BMK5000 & 6000 ....................................................................................... 108
8.4 FLAME DETECTOR ........................................................................................................................... 108
8.5 O SENSOR 109
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8.5.1 Air Eductor Air Pump Maintenance - BMK5000 & 6000 ............................................................................ 110
OMM-0137_E • GF-211 •
12/13/2019
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
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