Generation Of Setpoint; Weather-Compensated Control; Demand-Compensated Control - Siemens RVL470 Basic Documentation

8.7. Generation of setpoint

8.7.1. Weather-compensated control

8.7.2. Demand-compensated control

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Weather-compensated control is used with plant types 1, 2 and 3.
The setpoint can be generated in two different ways:
•
In function of the outside temperature via the heating curve (for setting, refer to sec-
tion "8.6. Heating curve"). The temperature used is the composite outside tempera-
ture
•
Manual preselection of a constant setpoint. This is accomplished by bridging terminals
H2–M. It is possible to choose whether the setpoint shall be absolute or used as a
minimum limit value (refer to section "13. Function block "Service functions and gen-
eral settings"")
SYNERGYR
OZW30
Setting knob
Room setpoint
room unit *
Operating line
1, 2 oder 3
Composite outside
Heating curve
temperature
Setting knob
on controller
LPB Data bus
OZW30 SYNERGYR central unit
s Slope
* Active only with room unit level
The impact of the central unit OZW30 is described in section "17.1.4. Combination with
SYNERGYR central unit OZW30".
Demand-compensated control is used with plant types 4, 5 and 6. The setpoint is deliv-
ered to the RVL470 via LPB in the form of a heat demand signal. In that case, the out-
side temperature will not be taken into consideration.
Basic Documentation RVL470
Function block "Space heating"
20 °C
or
s
1 + s
1 + s
Flow temperature
setpoint T
Vw
Setpoint on
operating line 165
Parallel displacement of
heating curve, operating line 72
LPB
Siemens Building Technologies
Landis & Staefa Division