Siemens RVD240 Basic Documentation page 5

Siemens Building Technologies
HVAC Products
11.2.3 Circulating pump............................................................................................ 36
11.2.4 Input H5 ......................................................................................................... 36
11.2.5 Control of variable speed pump..................................................................... 36
12 Function block Space heating ....................................................................... 40
12.1 Operating lines .............................................................................................. 40
12.2 Compensating variables ................................................................................ 40
12.2.1 Outside temperature...................................................................................... 40
12.2.2 Room temperature......................................................................................... 41
12.3 Heating curve ................................................................................................ 42
12.4 Generation of setpoint ................................................................................... 43
12.4.1 Display of setpoint ......................................................................................... 43
12.4.2 Setpoint of weather-compensated control ..................................................... 43
12.4.3 Setpoint of room-compensated control.......................................................... 44
12.4.4 Setpoint of weather-compensated control with room influence ..................... 44
12.5 Heating circuit control .................................................................................... 45
12.5.1 Weather-compensated control ...................................................................... 45
12.5.2 Room-compensated control .......................................................................... 45
12.5.3 Weather-compensated control with room influence ...................................... 45
12.6 Automatic ECO function ................................................................................ 46
12.6.1 Fundamentals................................................................................................ 46
12.6.2 Compensating variables and auxiliary variables ........................................... 46
12.6.3 Heating limit................................................................................................... 47
12.6.4 Mode of operation of ECO function 1 ............................................................ 47
12.6.5 Mode of operation of ECO function 2 ............................................................ 47
12.7 Pump overrun ................................................................................................ 47
12.8 Maximum limitation of the room temperature ................................................ 47
12.9 Optimization................................................................................................... 48
12.9.1 Definition and purpose................................................................................... 48
12.9.2 Fundamentals................................................................................................ 48
12.9.3 Process.......................................................................................................... 49
12.9.4 Room model temperature.............................................................................. 49
12.9.5 Optimum stop control .................................................................................... 50
12.9.6 Quick setback ................................................................................................ 50
12.9.7 Optimum start control .................................................................................... 50
12.9.8 Maximum rate of flow temperature increase ................................................. 51
12.10 Frost protection for the building ..................................................................... 51
12.10.1 General.......................................................................................................... 51
12.10.2 Mode of operation with room sensor ............................................................. 51
12.10.3 Mode of operation without room sensor ........................................................ 51
12.11 Protective functions ....................................................................................... 52
12.11.1 Pump kick ...................................................................................................... 52
12.11.2 Valve kick ...................................................................................................... 52
Basic documentation RVD240
Contents
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CE1P2384en
27.05.2004