11. Design information regarding flat
roof installation
11. 1 Determining the collector row spacing "z" ................................................................. 108
11. 2 Vitosol-FM/-F flat-plate collectors (on collector supports) ......................................... 109
■ Collector supports with variable angle of inclination ............................................. 109
■ Collector supports with fixed angle of inclination .................................................. 113
11. 3 Vacuum tube collectors (on collector supports) ........................................................ 114
■ Collector supports with variable angle of inclination ............................................. 114
■ Collector supports with fixed angle of inclination .................................................. 115
11. 4 Vitosol 200-TM vacuum tube collectors, type SPEA and Vitosol 300-TM,
type SP3BC (horizontal) ........................................................................................... 116
■ Type SPEA ............................................................................................................ 117
12. Design information for installa-
tion on walls
12. 1 Vitosol-FM/-F flat-plate collectors, type SH .............................................................. 117
■ Collector supports – angle γ 10 to 45° .................................................................. 117
12. 2 Vitosol 300-TM vacuum tube collectors, type SP3C ................................................. 117
13. Information regarding design and
operation
13. 1 Sizing the solar thermal system ................................................................................ 118
■ System for heating DHW ...................................................................................... 119
■ System for DHW heating and central heating backup .......................................... 119
■ Swimming pool heating system – heat exchanger and collector .......................... 120
13. 2 Solar thermal system operating modes .................................................................... 122
■ Flow rate in the collector array .............................................................................. 122
■ Which operating mode is the right one? ............................................................... 122
13. 3 Installation examples Vitosol-FM/-F, types SV and SH ............................................. 122
■ High flow operation — single sided connection .................................................... 122
■ High flow operation — connection on alternate sides ........................................... 122
■ Low flow operation — single sided connection ..................................................... 123
■ Low flow operation — connection on alternate sides ............................................ 123
13. 4 Installation examples Vitosol 200-TM, type SPEA .................................................... 123
■ Vertical installation on pitched roofs, installation on collector supports or hori-
zontal installation .................................................................................................. 123
■ Horizontal installation on a pitched roof ................................................................ 124
13. 5 Installation examples Vitosol 300-TM, type SP3C .................................................... 124
■ Vertical installation on pitched roofs, installation on collector supports or hori-
zontal installation .................................................................................................. 125
■ Horizontal installation on pitched roofs and on walls ............................................ 125
13. 6 Pressure drop of the solar thermal system ............................................................... 126
■ Pressure drop of the solar flow and return lines ................................................... 127
■ Pressure drop Vitosol-FM/-F, types SV and SH .................................................... 127
■ Pressure drop Vitosol 200-TM and Vitosol 300-TM .............................................. 128
13. 7 Flow velocity and pressure drop ............................................................................... 129
■ Flow velocity ......................................................................................................... 129
■ Pressure drop of the pipework .............................................................................. 130
13. 8 Sizing the circulation pump ....................................................................................... 131
13. 9 Ventilation ................................................................................................................. 132
13.10 Safety equipment ...................................................................................................... 132
■ Stagnation in solar thermal systems ..................................................................... 132
■ Adjust system pressure ......................................................................................... 135
■ Expansion vessel .................................................................................................. 135
■ Safety valve .......................................................................................................... 136
■ High limit safety cut-out ......................................................................................... 136
13.11 Additional function for DHW heating ......................................................................... 137
13.12 Connecting the DHW circulation and automatic thermostatic mixing valve .............. 137
13.13 Intended use ............................................................................................................. 138
14. Appendix 14. 1 Subsidy programmes, permits and insurance .......................................................... 138
14. 2 Glossary .................................................................................................................... 138
15. Keyword index ............................................................................................................................................ 140
Index
(cont.)
4
VIESMANN
VITOSOL
5822 440 GB
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