11.3 TDS Valves .................................................................................................................................... 209
11.4 TDS Probe ..................................................................................................................................... 210
11.4.1 Specification........................................................................................................................... 210
11.4.2 Dimensions ............................................................................................................................ 211
11.4.3 Installation .............................................................................................................................. 212
11.5 Configuration ................................................................................................................................. 213
11.5.1 Wiring ..................................................................................................................................... 213
11.5.2 Top Blowdown PID Controller ................................................................................................ 213
11.6 Ways of Controlling TDS Level ...................................................................................................... 214
11.6.1 Continuous TDS Control ........................................................................................................ 214
11.6.2 Solenoid and Servomotor 2-State TDS Control ..................................................................... 214
11.6.3 TDS Timing Diagram ............................................................................................................. 215
11.6.4 Sample Routine ..................................................................................................................... 216
11.7 Water Hardness Monitoring ........................................................................................................... 217
11.8 Calibrating the TDS Probe ............................................................................................................. 218
11.9 Faults ............................................................................................................................................. 220
12 BOTTOM BLOWDOWN ............................................................................................................. 221
12.1 Overview ........................................................................................................................................ 221
12.2 Bottom Blowdown Expansion Options ........................................................................................... 222
12.3 Bottom Blowdown Reduction ......................................................................................................... 223
12.3.1 Blowdown Energy Savings .................................................................................................... 223
12.3.2 Calculation for Bottom Blowdown Reduction ......................................................................... 224
12.4 Installation Guidance ..................................................................................................................... 226
12.4.1 Bottom Blowdown Valve ........................................................................................................ 227
12.4.2 Bottom Blowdown Using Solenoid Valve ............................................................................... 227
12.4.3 Bottom Blowdown Module ..................................................................................................... 228
12.5 Set-up ............................................................................................................................................ 230
12.5.1 Bottom Blowdown Settings .................................................................................................... 230
12.5.2 Setting Servomotor ................................................................................................................ 231
12.6 Bottom Blowdown Configuration ................................................................................................... 235
12.6.1 Bottom Blowdown Schedule .................................................................................................. 235
12.6.2 Bottom Blowdown Log ........................................................................................................... 237
12.7 Faults ............................................................................................................................................. 238
13 DRAUGHT CONTROL ............................................................................................................... 239
13.1 Overview of Draught Control ......................................................................................................... 239
13.1.1 Parts Required for Draught Control ....................................................................................... 241
13.2 Draught Control Expansion Options .............................................................................................. 242
13.3 Draught Control Operation ............................................................................................................. 244
13.3.1 Operation Overview ............................................................................................................... 244
13.3.2 Deactivation Window ............................................................................................................. 245
13.3.3 Draught Control Trim ............................................................................................................. 246
13.4 Draught Control Set-Up ................................................................................................................. 248
13.4.1 Configuration.......................................................................................................................... 248
13.4.2 Ways of Using Draught Servomotor ...................................................................................... 249
13.5 Commissioning Draught Control .................................................................................................... 250
13.5.1 Commissioning Checks ......................................................................................................... 250
13.5.2 Commissioning Screen .......................................................................................................... 251
13.6 Faults ............................................................................................................................................. 252