Siemens RVA63.242 - Page 9

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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Contents 26.03.2001
6.13 Overview of pump operation...............................................................198
6.14 Frost protection.................................................................................199
6.14.1 For the boiler....................................................................................199
6.14.2 For the d.h.w. ...................................................................................199
6.14.3 For the heating circuit........................................................................200
7 Application examples.........................................................................201
7.1 Structure of plant diagrams.................................................................201
7.2 Heat source variants..........................................................................202
7.2.1 PPS-BMU........................................................................................202
7.2.2 Multi-stage burner .............................................................................203
7.2.3 Modulating burner.............................................................................203
7.2.4 Cascade 2 x 1..................................................................................204
7.2.5 Cascade slave ..................................................................................204
7.3 Plant types.......................................................................................205
7.3.1 Without system pump........................................................................205
7.3.2 System pump before d.h.w. ................................................................206
7.3.3 System pump after d.h.w....................................................................207
7.3.4 System pump with external heat demand .............................................208
7.3.5 D.h.w. diverting valve .........................................................................209
7.3.6 Cascade 2 x 1..................................................................................210
7.4 Supplementary information on the plant types listed...............................210
7.5 Legend to plant types ........................................................................211
7.6 Electrical connections........................................................................212
8 Dimensions ......................................................................................213
8.1.1 Panel cut-out....................................................................................213
8.1.2 Combination of controllers ..................................................................213
9 Technical data..................................................................................214