Siemens RVD110 Basic Documentation page 7

Siemens Building Technologies
HVAC Products
16 Function block D.h.w. actuator 1 ................................................................... 55
16.1 Operating lines .............................................................................................. 55
16.2 Mode of operation.......................................................................................... 55
16.3 Control process ............................................................................................. 55
16.4 Setpoint boost................................................................................................ 55
16.5 Maximum setpoint ......................................................................................... 55
17 Function block D.h.w. actuator 2 ................................................................... 56
17.1 Operating lines .............................................................................................. 56
17.2 Mode of operation.......................................................................................... 56
17.3 Control process ............................................................................................. 56
17.4 Instantaneous d.h.w. heating......................................................................... 56
17.4.1 General.......................................................................................................... 56
17.4.2 Location of sensors ....................................................................................... 56
17.4.3 Flow switch .................................................................................................... 56
17.4.4 Offsetting the heat losses .............................................................................. 57
17.4.5 Cold water sensor B71 .................................................................................. 58
17.4.6 Adaptation to the time of year........................................................................ 58
17.4.7 Adjustable load limit....................................................................................... 58
17.4.8 Child-proofing ................................................................................................ 59
17.4.9 Plants with no mixing circuit .......................................................................... 59
17.4.10 Plants with a mixing circuit ............................................................................ 59
17.5 Instantaneous d.h.w. heating with storage tanks........................................... 59
17.5.1 General.......................................................................................................... 59
17.5.2 Measuring the d.h.w. temperature................................................................. 60
17.5.3 Feeding the circulating water into the heat exchanger .................................. 60
17.5.4 D.h.w. heating................................................................................................ 60
18 Function block Test and display .................................................................... 61
18.1 Operating lines .............................................................................................. 61
18.2 Mode of operation.......................................................................................... 61
18.2.1 Sensor test .................................................................................................... 61
18.2.2 Relay test....................................................................................................... 61
18.2.3 Display of active limitations ........................................................................... 62
18.2.4 PPS identification .......................................................................................... 62
18.2.5 Contact state H5............................................................................................ 62
18.2.6 Resetting the heating engineer level ............................................................. 62
18.2.7 Software version............................................................................................ 62
19 Function block Locking functions................................................................... 63
19.1 Operating lines .............................................................................................. 63
19.2 Mode of operation.......................................................................................... 63
19.3 Maximum limitation of the primary return temperature .................................. 63
Basic Documentation RVD110, RVD130
Contents
7/94
CE1P2381E
27.05.2004