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Siemens
Basic Documentation RVP360
CE1P2546en
Building Technologies
9 Function block: Space heating
2017-07-24
the summer when – because the outside temperature drops for a few days – the
heating would normally be switched on
T
A
(B9 rsp. BUS)
25
2
2
B
0
2
T
A
k
t
k
t
T
AD
T
AM
Generation of composite and attenuated outside temperature
T
A
Current outside temperature
T
AM
Composite outside temperature
T
AD
Attenuated outside temperature
k
t
Building time constant
0
5
10
15
20
25
T
AD
T
AM
t
25
22
D
17
T
A
T
A
Progression of current, composite and attenuated outside temperature
T
A
Current outside temperature
T
AM
Composite outside temperature
T
AD
Attenuated outside temperature
t
Time
9.2.2 Heating
limits
2 heating limits can be set:
"ECO day" for NORMAL heating
"ECO night" for the lower temperature level. This can be REDUCED heating or
OFF (holiday/protection mode)
In both cases, the heating limit is the outside temperature at which the heating shall
be switched on or off. The switching differential is 1 °C.