Automatic 24-Hour Heating Limit; Without Room Influence; With Room Influence - Siemens RVA63.242 User Manual

Benefits
Description
Notes
Introduction
Process
Switching off
Switching on
Introduction
Process
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Siemens Building Technologies
Landis & Staefa Division

6.4 Automatic 24-hour heating limit

Automatic shut-down of heating.
Saving energy without sacrificing comfort.
This is a fast-acting savings function since the heating is switched off when there is no
more demand for heat. Economical operation is ensured throughout the year,
especially during intermediate seasons. Manual switching off is no longer required.
The automatic 24-hour heating limit does not function in continuous operation
The display shows the automatic 24-hour heating limit as "ECO"

1.1.3 Without room influence

If no room unit is connected, the room temperature setpoint will not be readjusted by
the room influence. In that case, the automatic 24-hour heating limit operates according
to the selected setpoint of
The temperature basis used for this process are the values of the flow temperature
setpoint and the current room temperature setpoint.
If the flow temperature setpoint falls below the room temperature setpoint plus a
correction value, the heating will be switched off.
• Heating OFF
TVw
If the flow temperature setpoint exceeds the room temperature setpoint plus a
correction value, the heating will be switched on.
• Heating's switch-on point
TVw
TVw Flow temperature setpoint
TRw Room temperature setpoint
s Slope of heating curve

6.4.1 With room influence

The automatic 24-hour heating limit operates depending on the current flow
temperature setpoint. If a room unit is connected, the room influence continuously
readjusts the flow temperature setpoint.
This means that the automatic 24-hour heating limit differs when room influence is
used.
The temperature basis used for this process are the values of the flow temperature
setpoint and the current room temperature setpoint.
Basic Documentation RVA63.242, RVA53.242
General control processes
or ..
= TRw + 2 S/10
= TRw + 4 S/10
.
CE1P2373E
26.03.2001