6.2.3 Wiring ..................................................................................................................................... 126
6.2.4 Settings .................................................................................................................................. 127
6.2.5 Commissioning ...................................................................................................................... 127
6.3 Flame Detection Using Flame Switch ............................................................................................ 128
6.4 Continuous Pilot ............................................................................................................................. 129
6.4.1 Continuous Pilot with Interrupted Pilot Sequence ................................................................. 130
6.4.2 Continuous Pilot with Intermittent Pilot Sequence ................................................................. 131
6.5 Load Sensor Value Calibration ...................................................................................................... 132
6.6 External Modulation ....................................................................................................................... 133
6.7 External Setpoint ........................................................................................................................... 133
6.8 Second Setpoint Select ................................................................................................................. 133
6.9 Start Position Interlock and Purge Position Interlock .................................................................... 134
6.10 Purge Pressure Proving/ Purge Hold ............................................................................................ 135
6.11 No Pre-Purge ................................................................................................................................. 136
7 INTELLIGENT BOILER SEQUENCING .................................................................................... 137
7.1 Sequencing Schematics ................................................................................................................ 137
7.1.1 Hot Water Example ................................................................................................................ 138
7.1.2 Single/ Multi-Burner Examples .............................................................................................. 139
7.1.3 IBS Communications ............................................................................................................. 140
7.2 Sequencing Options and Parameters ............................................................................................ 141
7.3 Hot Water Sequencing ................................................................................................................... 142
7.3.1 Implementing Hot Water Sequencing .................................................................................... 142
7.3.2 Two Port Valve Operation ...................................................................................................... 143
7.4 Steam Sequencing ........................................................................................................................ 144
7.4.1 Warming Steam Boilers ......................................................................................................... 144
7.4.2 Implementing Steam Sequencing .......................................................................................... 144
7.4.3 Low Pressure Steam Sequencing ......................................................................................... 145
7.5 Troubleshooting – Sequencing ...................................................................................................... 146
8 MULTI-BURNER OPERATION .................................................................................................. 147
8.1 Multi-Burner Overview ................................................................................................................... 147
8.2 Configuring Multi-Burner Operation ............................................................................................... 148
8.2.1 Wiring ..................................................................................................................................... 148
8.2.2 Options and Parameters ........................................................................................................ 149
8.2.3 Commissioning in Multi-Burner Operation ............................................................................. 149
8.2.4 Fuel Flow Metering in Multi-Burner Operation ....................................................................... 149
8.2.5 Single Point Change in Multi-Burner Operation ..................................................................... 149
8.3 Multi-Burner Operation Options ..................................................................................................... 150
8.3.1 Fully Linked Operation ........................................................................................................... 150
8.3.2 Independent on Fault ............................................................................................................. 151
8.4 Multi-Burner with Water Level Control ........................................................................................... 152
8.5 Multi-Burner with EGA ................................................................................................................... 153
8.5.1 Multi-Burner with Single EGA ................................................................................................ 153
8.5.2 Multi-Burner with individual EGAs ......................................................................................... 154
8.6 Multi-Burner External Modulation .................................................................................................. 155
8.6.1 Permanent External Modulation ............................................................................................ 155
8.6.2 Switched External Modulation ............................................................................................... 155
9 EXPANSION FEATURES .......................................................................................................... 156
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