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Description
Line 51, 52
Description
Line 53
Resetting
Effect
Siemens Building Technologies
HVAC Products
4
Description of the heating engineer
settings
Service values
4.1
Current room temperature setpoints
Depending on the operating mode, the room temperature is maintained either at the
nominal setpoint (TRN), the reduced setpoint (TRRw), or the frost protection setpoint
(TRF).
These parameters show the current setpoints of heating circuits 1 and 2.
Press the line selection buttons to select line 51 (HC1) or 52 (HC2).
Line
Display
51
4 ... 35.0
52
4 ... 35.0
4.2
Attenuated outside temperature
The attenuated outside temperature is the simulated room temperature of a fictive
building that has no internal heat source. This means that it is only the outside
temperature that affects the room temperature. Consideration is given to the building's
thermal storage capacity.
The attenuated outside temperature is generated by the room unit. It is continually
calculated based on the prevailing outside temperature.
Operating line 53 automatically displays the actual value [°C] of the attenuated outside
temperature. No direct setting can be made.
The generation of the attenuated outside temperature cannot be influenced.
Display
–50 ... +50
It is possible, however, to reset the attenuated outside temperature:
1.
Press the line selection buttons to select line 53.
2.
Press the + / – buttons for 3 seconds.
As soon as the display stops flashing, the attenuated outside temperature is reset
to the actual outside temperature.
The attenuated outside temperature affects directly only summer / winter changeover.
The attenuated outside temperature acts indirectly on flow temperature control via the
composite outside temperature.
Basic Documentation QAA73.110 Room unit
Error! Style not defined.
Unit
°C
°C
Unit
°C
Setpoint
HK1
HK2
35/70
CE1P2284en
19.06.2002
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