Siemens RVL471 - Page 7

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products Contents 23.10.2002
14.2.2 Maximum limitation of return temperature differential (DRT limitation)..........60
14.2.3 Integral action time.........................................................................................61
14.2.4 Minimum stroke limitation (suppression of hydraulic creep) ..........................61
14.2.5 Limitation of the volumetric flow.....................................................................61
15 Function block "Maximum limitation of the return temperature, d.h.w.".........62
15.1 Operating line.................................................................................................62
15.2 Purpose..........................................................................................................62
15.3 Function .........................................................................................................62
16 Function block "Basic settings d.h.w." ...........................................................64
16.1 Operating lines...............................................................................................64
16.2 Assignment of d.h.w. heating.........................................................................64
16.3 Program for the circulating pump...................................................................64
16.3.1 General mode of operation ............................................................................64
16.3.2 Operation of circulating pump during the holiday period...............................65
16.4 Frost protection for d.h.w...............................................................................66
16.4.1 Frost protection in the d.h.w. storage tank.....................................................66
16.4.2 Frost protection in the d.h.w. storage tank flow .............................................66
16.4.3 Frost protection for the secondary d.h.w. flow...............................................66
17 Function block "Release of d.h.w. heating"....................................................67
17.1 Operating line.................................................................................................67
17.2 Release..........................................................................................................67
17.2.1 Function .........................................................................................................67
17.2.2 Release programs..........................................................................................67
17.2.3 D.h.w heating during the holiday period.........................................................68
18 Function block "D.h.w. priority and flow temperature setpoint"......................69
18.1 Operating line.................................................................................................69
18.2 Settings..........................................................................................................69
18.3 D.h.w. priority.................................................................................................69
18.3.1 Absolute priority.............................................................................................69
18.3.2 Shifting priority ...............................................................................................70
18.3.3 No priority.......................................................................................................70
18.4 Flow temperature setpoint .............................................................................70
18.4.1 Maximum selection ........................................................................................70
18.4.2 D.h.w..............................................................................................................71
19 Function block "D.h.w. storage tank".............................................................72
19.1 Operating lines...............................................................................................72
19.2 D.h.w. charging..............................................................................................72
19.2.1 D.h.w. charging with hot water.......................................................................72
19.2.2 Alternate d.h.w. charging with hot water and electricity.................................72