Siemens RVL471 - Page 8

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products Contents 23.10.2002
19.3 D.h.w. temperature and d.h.w. switching differential..................................... 73
19.4 Boost of the d.h.w. charging temperature ..................................................... 74
19.5 Maximum d.h.w. charging time...................................................................... 74
19.6 Setpoint of legionella function ....................................................................... 74
19.7 Forced charging ............................................................................................ 75
19.8 Protection against discharging...................................................................... 75
19.8.1 Purpose......................................................................................................... 75
19.8.2 Mode of operation ......................................................................................... 75
19.9 Manual d.h.w. charging................................................................................. 76
20 Function block "3-position actuator for d.h.w." .............................................. 77
20.1 Operating lines.............................................................................................. 77
20.2 Function ........................................................................................................ 77
20.2.1 Flow temperature boost................................................................................. 77
20.2.2 D.h.w temperature control............................................................................. 77
20.3 Pulse lock...................................................................................................... 77
21 Function block "Derivative action time d.h.w. heating via heat exchanger" .. 78
21.1 Operating line................................................................................................ 78
21.2 Description .................................................................................................... 78
22 Function block "Multi-functional relay"........................................................... 79
22.1 Operating lines.............................................................................................. 79
22.2 Functions....................................................................................................... 79
22.2.1 No function.................................................................................................... 79
22.2.2 Outside temperature switch .......................................................................... 79
22.2.3 ON / OFF according to the time switch ......................................................... 80
22.2.4 Relay energized in the event of fault............................................................. 80
22.2.5 Relay energized during occupancy time ....................................................... 80
22.2.6 Relay energized during occupancy time (including optimizations)................ 80
22.2.7 Relay energized, if there is demand for heat ................................................ 80
22.2.8 Manually ON / OFF ....................................................................................... 80
23 Function block "Legionella function" ............................................................. 81
23.1 Operating lines.............................................................................................. 81
23.1.1 Periodicity of legionella function.................................................................... 81
23.1.2 Time of legionella function ............................................................................ 81
23.1.3 Dwelling time at the legionella setpoint......................................................... 81
23.1.4 Circulating pump operation during the legionella function ............................81
23.2 Mode of operation ......................................................................................... 81
24 Function block "Switching program 3"........................................................... 83
24.1 Operating lines.............................................................................................. 83
24.2 Function ........................................................................................................ 83