Siemens RVA47.320 User Manual page 5

Cascade controller for modulating gas-fired boilers
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4.34
Maximum forward shift of optimum start control............................................ 82
4.34.1
Optimum start control .................................................................................... 83
4.34.2
Without room influence.................................................................................. 83
4.34.3
With room influence....................................................................................... 83
4.35
Maximum forward shift of optimum stop control ............................................ 84
4.35.1
Optimum stop control .................................................................................... 84
D.h.w. values ................................................................................................................. 85
4.36
Reduced setpoint of the d.h.w. temperature.................................................. 85
4.37
Release of d.h.w. heating .............................................................................. 85
4.37.1
24-hour operation - Setting 0......................................................................... 86
4.37.2
4.37.3
4.38
Switching program circulating pump.............................................................. 87
4.39
Assignment of d.h.w. heating ........................................................................ 88
4.40
Number of d.h.w. charging cycles ................................................................. 88
4.40.1
4.40.2
4.41
Type of d.h.w. demand .................................................................................. 89
4.42
Boost of the flow temperature setpoint for d.h.w. .......................................... 90
4.43
D.h.w. priority................................................................................................. 91
4.43.1
Shifting priority............................................................................................... 92
4.44
Demand for heat with reduced d.h.w. setpoint .............................................. 94
Cascade settings ........................................................................................................... 95
4.45
Changeover of boiler sequence in a cascade ............................................... 95
4.46
4.47
4.48
Switch-on delay lag boilers............................................................................ 98
4.49
Restart lock of BMUs..................................................................................... 98
LPB / system ................................................................................................................. 99
4.50
LPB device address....................................................................................... 99
4.51
LPB segment address ................................................................................. 100
4.52
LPB power supply........................................................................................ 100
4.53
Displaying the LPB power supply ................................................................ 101
4.54
Displaying the LPB communication ............................................................. 101
4.55
Range of action of central changeover........................................................ 102
4.56
Automatic summer / winter changeover ...................................................... 102
4.57
Central standby switch ................................................................................ 103
4.58
Clock mode.................................................................................................. 103
4.59
Winter- / summertime changeover .............................................................. 104
4.60
Summer- / wintertime changeover............................................................... 105
. .............................................................................................................. 106
4.61
Input H1 ....................................................................................................... 106
4.61.1
4.61.2
Minimum setpoint of flow temperature contact H1 ...................................... 108
4.61.3
Heat generation lock - Setting 3 ................................................................ 108
4.61.4
Demand for heat - Setting 4 ...................................................................... 109
4.62
Minimum setpoint of flow temperature contact H1 ...................................... 110
4.63
Maximum value of heat demand signal DC 0...10 V (H1) ........................... 111
4.64
Operating action of the contact connected to H1 ........................................ 111
5
Description of the OEM settings .................................................................. 112
Heat generation values................................................................................................ 112
5.1
Basic Documentation RVA47.320
Contents
)..... 112
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CE1P2379E
15.07.2002

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