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Siemens
User Manual
CE1U2353en
Building Technologies
Heating circuits
2014-07-30
Optimum start / stop control
Line no.
Operating line
HC1
HC2
HCP
790
1090
1390
Optimum start control max
791
1091
1391
Optimum stop control max
The change from one temperature level to the other is optimized in a way that the
Comfort setpoint is reached at the relevant switching time.
The change from one temperature level to the other is optimized in a way that the
Comfort setpoint minus 1/4 °C is reached at the relevant switching time
·
Optimum start / stop control is possible with or without room sensor.
Xein
Switch-on time shifted forward in time
Xaus
Switch-off time shifted forward in time
ZSP
Time program
TRx
Actual value of room temperature
TRw
Room temperature setpoint
Raising the reduced setpoint
Line no.
Operating line
HC1
HC2
HCP
800
1100
1400
Red setpoint increase start
801
1101
1401
Red setpoint increase end
The function is used primarily in connection with heating systems with
only
little spare
capacity (e.g. low-energy houses). In such cases, the heating up time would be too
long at low outside temperatures. When the Reduced setpoint is raised, the rooms are
prevented from cooling down to too low levels, thus shortening the heating up time
when changing to the Comfort setpoint.
Optimum start control max
Optimum top control max
0
24
2
3
5
8
Z
0
2
Xein
Xaus
TRx
TRw
ZSP
1/4 °C