Siemens RVD240 - Page 6

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Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products Contents 27.05.2004
12.11.3 Shutdown of pump .........................................................................................52
12.11.4 Pump and mixing valve overrun.....................................................................52
13 Function block Valve actuator of heat converter............................................54
13.1 Operating lines...............................................................................................54
13.2 Mode of operation ..........................................................................................54
13.3 Control process..............................................................................................54
13.4 Maximum limitation of the flow temperature ..................................................54
13.5 Minimum limitation of the flow temperature ...................................................54
13.6 External heat demand at input H5 .................................................................55
13.7 External heat demand at input U1 .................................................................55
14 Function block Valve actuator heating circuit ..................................................56
14.1 Operating lines...............................................................................................56
14.2 Mode of operation ..........................................................................................56
14.3 Control process..............................................................................................56
14.4 Maximum limitation of the flow temperature ..................................................56
14.5 Minimum limitation of the flow temperature ...................................................57
15 Function block D.h.w. heating........................................................................58
15.1 Operating lines...............................................................................................58
15.2 Release of d.h.w. heating ..............................................................................58
15.3 Control of the circulating pump ......................................................................59
15.4 Switching differential of d.h.w. control............................................................59
15.5 Legionella function .........................................................................................59
15.6 Priority of d.h.w. heating ................................................................................59
15.6.1 General ..........................................................................................................59
15.6.2 Absolute priority .............................................................................................60
15.6.3 Shifting priority ...............................................................................................60
15.6.4 No priority.......................................................................................................61
15.7 Pump overrun ................................................................................................61
15.7.1 General ..........................................................................................................61
15.7.2 Intermediate circuit pump...............................................................................61
15.7.3 Storage tank charging pump..........................................................................61
15.8 Frost protection for d.h.w. ..............................................................................62
15.9 Switching d.h.w. heating off ...........................................................................62
16 D.h.w. heating ................................................................................................63
16.1 D.h.w. heating with storage tanks ..................................................................63
16.1.1 General ..........................................................................................................63
16.1.2 Maximum charging time.................................................................................63
16.1.3 Manual storage tank heating..........................................................................63
16.1.4 Forced charging .............................................................................................63
16.1.5 Protection against discharging.......................................................................64
16.1.6 Protection against overtemperatures .............................................................64