Switching Differential Of The Room Temperature - Siemens ALBATROS QAA73.110 Basic Documentation

Room influence
Description
Line 76
Effect
Siemens Building Technologies
HVAC Products
On HC1 Room influence acting on heating circuit 1: The measured room
temperature has an impact on temperature control of heating circuit 1
(OpenTherm Lite mode)
On HC2 Room influence acting on heating circuit 2: The measured room
temperature has an impact on temperature control of heating circuit 2
On HC1+HC2 Room influence acting on heating circuits 1 and 2:
The measured room temperature has an impact on temperature
control of both heating circuits
Deviations of the actual room temperature from the setpoint are acquired and taken into
account by temperature control.
To be able to use the control variant "Weather compensation with room influence", the
following conditions must be satisfied:
• An outside sensor must be connected to boiler control
• Room influence must be enabled to act on the relevant heating circuits
• There may be no thermostatic radiator valves in the reference room (If such
valves are present, they must be set to their fully open position).
4.17 Switching differential of the room
temperature
It is used for room temperature limitation. This function is recommended for pump
heating circuits and prevents the rooms from getting overheated.
1. Press the line selection buttons to select line 76.
2. Press the + / – buttons to set the room temperature switching differential.
Setting range
– – . –
0.5...4.0
The switching differential for 2-position control will be changed.
Entry:
Switching differential is inaktiv
– – . –
•
The pump always remains activated
Decrease: Switching differential will become smaller
•
The pumps are switched on and off more often
•
The room temperature varies within a narrower band
Increase: Switching differential will become greater
• The pumps are switched on and off less often
•
The room temperature varies within a wider band
Basic Documentation QAA73.110 Room unit
Description of the heating engineer settings
Unit
–
°C
Factory setting
0.5
CE1P2284en
10.07.2002
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