7 Adapting the unit to the heating installation
24
Installation and maintenance instructions ecoTEC plus 0020214491_01
7.5
Setting the maximum flow temperature
You can set the maximum flow temperature for the heating
mode under
D.71
(default setting: 75 °C).
7.6
Setting the burner anti-cycling time
To prevent frequent switching on and off of the burner and
thus prevent energy losses, an electronic restart lockout
is activated for a specific period each time the burner is
switched off. You can adjust the burner anti-cycling time to
the conditions of the heating installation. The burner anti-
cycling time is only active for the heating mode. Hot water
handling mode during a burner anti-cycling time does not
affect the time function element. You can set the maximum
burner anti-cycling time under
D.2
(default setting: 20 min.).
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:
T
Flow
(target)
[°C]
Set maximum burner anti-cycling time [min]
1
5
10
15
20
25
30
30
2.0
4.0
8.5
12.5
16.5
20.5
25.0
35
2.0
4.0
7.5
11.0
15.0
18.5
22.0
40
2.0
3.5
6.5
10.0
13.0
16.5
19.5
45
2.0
3.0
6.0
8.5
11.5
14.0
17.0
50
2.0
3.0
5.0
7.5
9.5
12.0
14.0
55
2.0
2.5
4.5
6.0
8.0
10.0
11.5
60
2.0
2.0
3.5
5.0
6.0
7.5
9.0
65
2.0
1.5
2.5
3.5
4.5
5.5
6.5
70
2.0
1.5
2.0
2.5
2.5
3.0
3.5
75
2.0
1.0
1.0
1.0
1.0
1.0
1.0
T
Flow
(target)
[°C]
Set maximum burner anti-cycling time [min]
35
40
45
50
55
60
30
29.0
33.0
37.0
41.0
45.0
49.5
35
25.5
29.5
33.0
36.5
40.5
44.0
40
22.5
26.0
29.0
32.0
35.5
38.5
45
19.5
22.5
25.0
27.5
30.5
33.0
50
16.5
18.5
21.0
23.5
25.5
28.0
55
13.5
15.0
17.0
19.0
20.5
22.5
60
10.5
11.5
13.0
14.5
15.5
17.0
65
7.0
8.0
9.0
10.0
11.0
11.5
70
4.0
4.5
5.0
5.5
6.0
6.5
75
1.0
1.0
1.0
1.0
1.0
1.0
Note
The remaining burner anti-cycling time following a
regular shutdown in heating mode can be called
up under
D.67
.
7.7
Setting the maintenance interval
If you set the maintenance interval, the maintenance mes-
sage
SEr
appears in the display after a configurable number
of burner operating hours. The display on the eBUS control-
ler shows the information
Maintenance
.
▶
Use
D.84
to set the operating hours until the next main-
tenance work is due. Guideline values can be found in
the following table.
Heat de-
mand
Number
of per-
sons
Burner operating hours until the
next inspection/maintenance work
is due (dependent upon the sys-
tem type)
5.0 kW
1
‑
2
1050 h
2
‑
3
1150 h
10.0 kW
1
‑
2
1500 h
2
‑
3
1600 h
15.0 kW
2
‑
3
1800 h
3
‑
4
1900 h
20.0 kW
3
‑
4
2600 h
4
‑
5
2700 h
25.0 kW
3
‑
4
2800 h
4
‑
6
2900 h
> 27.0 kW
3
‑
4
3000 h
4
‑
6
3000 h
The values stated correspond to an average operating time
of one year.
If you do not set a numerical value but do set the symbol "
–
",
the
Maintenance display
function is not active.
Note
On completion of the set operating hours, you
must set the maintenance interval again.
7.8
Pump diagram
500
250
750
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
0
0
100
200
300
400
500
600
800
1000
700
900
1100
1200
B
A
53%
100%
A
Pump remaining feed
head in hPa (mbar)
B
System volume flow in
l/h
Min. vortex and rated volume flow (
Δ
T 20 K) are marked.
