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Programming
-10°C
-15°C
-20°C
Duration of the quick setback for setback by 4°C in h:
Outside temperature composite:
15°C
10°C
5°C
0°C
-5°C
-10°C
-15°C
-20°C
Optimum start control max
(790, 1090, 1390)
Optimum stop control max
(791, 1091, 1391)
86
0
0.4
0
0.4
0
0,3
Building time constant (configuration, programme number 6110)
0 hrs
2 hrs
0
9,7
0
3.1
0
1,9
0
1,3
0
1
0
0.9
0
0,7
0
0,6
The optimization of the on/off switching time is a function of time and possible
with or without the room unit. With a room unit the conversion of the operating
level compared to the programmed time point is moved forward so that the
building dynamics (heat up and cool down time) is considered. In this way the de-
sired temperature level is reached exactly at the programmed time point. If this is
not the case (too early or too late) a new switching time point is calculated which
is used the next time.
Without room sensor an advance time is calculated based on the outside temper-
ature and the building time constant (prog. no. 6110). The optimization time (ad-
vance) is limited here to a maximum value. By setting the optimization time = 0,
the function is switched off.
Fig. 18: Optimum start and stop control
on
Xon
Start time set forward
Xoff
Stop time set forward
ZSP
Time switching program
TRw
Room temperature setpoint
TRx
Room temperature actual value
Condensing gas boiler Eurocondense three125-300 kW
1
2,1
3.1
0.9
1,8
2,6
0,8
1.5
2.3
5 hrs
10 hrs
15 h
24,1
7,7
15.3
23
4.7
9,3
14
3,3
6,7
10
2,6
5,2
7,8
2,1
4.3
6.4
1,8
3,6
5,5
1,6
3,2
4.7
4,1
10,3
3,5
8,8
3.1
7,7
20 h
50 hrs
18,6
13,4
10,5
26,2
8,6
21,5
7,3
18,2
6,3
15.8
off
7308536-02 06.13
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