Siemens RWF40 Series - Heating curve slope

26/56 CC1B7865E February 10, 2000 Landis & Staefa Division
5. Operating modes
Slope «H» of the heating curve can be used to adjust the setpoint in response to the
outside temperature, as shown in the diagram. The common origin of the heating curves
is set at (20 °C / 20 °C). The effective range of the weather-adjusted setpoint is
restricted by the setpoint limits «
SPH»
and
«SPL»
.
Setpoint (°C)
Outside temperature (°C)
HYS1
+20
+20
0
H smaller
-1010
SPL
SPH
H larger
HYS3
7865d01e/1199
«HYS1»
is the switch-on point for the burner, and «
HYS3»
is the switch-off point. As
already described, they act with the set shift relative to the weather-controlled setpoint.
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Section 5.2.1 «Modulating burner, 3-position output»
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Section 5.2.2 «Modulating burner, modulating output»
5.5.1 Heating curve slope