72/348
Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the enduser settings
18.10.2002
To determine changeover, the setting of the summer / winter changeover temperature
( ± a fixed switching differential) is compared with the attenuated outside temperature.
Also refer to page 218.
Heating
OFF
(summer operation)
TAged > SoWi +1 °C
Heating
ON
(winter operation)
TAged < SoWi -1 °C
Changeover between summer and winter operation:
Taged Attenuated outside temperature
SoWi Summer / winter changeover temperature
T
Temperature
t
Time in days
H
Heating
Changeover
ON
17
T
SoWi
TAged
°C
H
OFF
t
23
79
D06
SoWi +1 °C
SoWi -1 °C
16
18
19
20
5
0
10
15
