Siemens LMS14

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Building Technologies Division User Manual LMS14… CC1U7471en
Contents 28.01.2015
6.17.5 Plant hydraulics ............................................................................................ 308
6.17.6 Return diversion ........................................................................................... 309
6.17.7 Partial charging ............................................................................................ 310
6.17.8 Full charging ................................................................................................ 311
6.17.9 Frost protection for the buffer in Heating mode ........................................... 311
6.17.10 Heat transfer to the DHW storage tank ........................................................ 312
6.18 DHW storage tank ........................................................................................ 314
6.18.1 Types of heat request .................................................................................. 314
6.18.2 DHW charging with one sensor ................................................................... 314
6.18.3 DHW charging with 2 sensors ...................................................................... 315
6.18.4 DHW charging with thermostat .................................................................... 315
6.18.5 Release ........................................................................................................ 316
6.18.6 Charging control ........................................................................................... 318
6.18.7 Limitation of charging time ........................................................................... 319
6.18.8 Charging pump/diverting valve .................................................................... 319
6.18.9 Discharging protection ................................................................................. 320
6.18.10 Overtemperature protection ......................................................................... 321
6.18.11 Frost protection for the DHW storage tank .................................................. 321
6.18.12 Recooling ..................................................................................................... 322
6.18.13 Electric immersion heater ............................................................................ 323
6.18.14 DHW push .................................................................................................... 326
6.18.15 Excess heat draw ......................................................................................... 328
6.18.16 Plant hydraulics ............................................................................................ 328
6.18.17 Speed-controlled pump ................................................................................ 329
6.18.18 Heat transfer ................................................................................................ 331
6.18.19 Stratification storage tank/intermediate circuit ............................................. 332
6.19 Storage tank systems .................................................................................. 334
6.19.1 Control of storage tank with sensor ............................................................. 334
6.20 Stratification storage tank ............................................................................ 336
6.20.1 Stratification storage tank with control to the boiler temperature flow .......... 338
6.20.1.1. Full charging of stratification storage tank ................................................... 340
6.20.1.2. Recharging the stratification storage tank .................................................... 341
6.20.2 Stratification storage tank with control to the DHW charging temperature via
setpoint compensation ................................................................................................. 342
6.20.2.1. Full charging of stratification storage tank ................................................... 344
6.20.2.2. Recharging the stratification storage tank .................................................... 347
6.20.3 Stratification storage tank with direct control to the DHW charging
temperature .................................................................................................................. 348
6.20.3.1. Full charging of stratification storage tank ................................................... 349
6.20.3.2. Recharging the stratification storage tank .................................................... 351
6.21 Instantaneous water heater ......................................................................... 352
6.21.1 Control ......................................................................................................... 352
6.21.2 DHW consumption (flow) ............................................................................. 352