With Room Influence - Siemens ALBATROS QAA73.110 Basic Documentation

Introduction
Process
Switching off
Switching on
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Siemens Building Technologies
HVAC Products
6.2.2

With room influence

If the room influence on the heating circuits is activated, the room influence readjusts
the flow temperature setpoint of the relevant heating circuits. In that case, the 24-hour
heating limit switches depending on the corrected flow temperature setpoint and the
adjusted setpoint ,
The temperature basis used for this function are the values of the readjusted flow
temperature setpoint and of the current room temperature setpoint.
If the flow temperature setpoint corrected by the room influence falls below the room
temperature setpoint plus a correction value, the heating will be switched off.
• Heating's switch-off point:
TVwk
If the flow temperature setpoint corrected by the room influence exceeds the room
temperature setpoint plus a correction factor, the heating will be switched on.
• Heating's switch-on point:
TVwk
KORR Factor for room influence (line 102)
TVwk Flow temperature setpoint corrected by the room temperature
TRw Room temperature setpoint
s Slope of the heating curve
Basic Documentation QAA73.110 Room unit
Functions
or .
S KORR
≤ TRw + 2 −
10 16
S KORR
≥ TRw + 4 −
10 16
CE1P2284en
10.07.2002