Adapting the boiler to the heating installation
54
Installation and maintenance instructions ecoTEC plus 0020116700_01
11
Eco (intermittently operating pump)
Pump operating mode Eco is the factory setting. This pump
operating mode is useful for removing residual heat after
hot water generation when the heat demand is extremely
low and large temperature spreads exist between the hot
water generation and heating mode target values. This pre-
vents living rooms from being under-supplied. If there is a
heat demand, the pump is switched on every 25 minutes for
5 minutes once the overrun time has elapsed.
11.1.3 Setting the maximum flow temperature
The maximum flow temperature for the heating is set at the
factory to 75 °C. This can be set to a value in the range of
40 °C to 80 °C under diagnosis code "D.071".
11.1.4 Setting the return flow temperature control
If the boiler is connected to an underfloor heating system,
the temperature control can be changed from flow temper-
ature regulation (factory setting) to return flow tempera-
ture control under diagnosis code "D.017".
T
Feed
(target)
[°C]
Set maximum burner anti-cycling time [min]
1
5
10
15
20
25
30
35
40
45
50
55
60
20
2.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
25
2.0
4.5
9.2
14.0
18.5
23.0
27.5
32.0
36.5
41.0
45.0
50.0
54.5
30
2.0
4.0
8.5
12.5
16.5
20.5
25.0
29.0
33.0
37.0
41.0
45.0
49.5
35
2.0
4.0
7.5
11.0
15.0
18.5
22.0
25.5
29.5
33.0
36.5
40.5
44.0
40
2.0
3.5
6.5
10.0
13.0
16.5
19.5
22.5
26.0
29.0
32.0
35.5
38.5
45
2.0
3.0
6.0
8.5
11.5
14.0
17.0
19.5
22.5
25.0
27.5
30.5
33.0
50
2.0
3.0
5.0
7.5
9.5
12.0
14.0
16.5
18.5
21.0
23.5
25.5
28.0
55
2.0
2.5
4.5
6.0
8.0
10.0
11.5
13.5
15.0
17.0
19.0
20.5
22.5
60
2.0
2.0
3.5
5.0
6.0
7.5
9.0
10.5
11.5
13.0
14.5
15.5
17.0
65
2.0
1.5
2.5
3.5
4.5
5.5
6.5
7.0
8.0
9.0
10.0
11.0
11.5
70
2.0
1.5
2.0
2.5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
75
2.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
11.2 Effective burner anti-cycling times
11.1.5
Burner anti-cycling time
Setting the burner anti-cycling time
To prevent frequent switching on and off of the burner and
therefore energy loss, an electronic restart lockout is acti-
vated for a specific period each time the burner is switched
off. You can adjust the burner anti-cycling time to the con-
ditions of the heating installation.
The burner anti-cycling time is only activated for the heat-
ing mode.
Hot water handling during a burner anti-cycling time does
not affect the timer.
You can set the maximum burner anti-cycling time at
installer level under diagnosis code "D.002" within the
range 2 minutes to 60 minutes (factory setting: 20 min).
The effective burner anti-cycling time depends on the cur-
rent target flow temperature and the maximum burner anti-
cycling time set.
The effective burner anti-cycling times with respect to the
target flow temperature and the maximum set burner anti-
cycling time can be found in the following table.
i
The remaining burner anti-cycling time following
a regular shutdown in heating mode can be
called up under diagnosis code "d.067".
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