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8 Adapting the unit to the heating installation
8
Adapting the unit to the heating
installation
To reset the most important system parameters, call up the
Appliance config. menu item.
Menu → Installer level → Appliance config.
Or manually relaunch the installation assistant.
Menu → Installer level → Start inst. assistant
8.1
Activating diagnostics codes
The setting options for more complex installations can be
found in the diagnostics codes.
Menu → Installer level → Diagnostics menu
You can use the parameters that are marked as adjustable
in the overview of diagnostics codes to adapt the product to
the heating installation and the needs of the customer.
▶
Press
or
to change the diagnostics code.
▶
Press
(Select) to select the parameter to change.
▶
Press
or
to change the current setting.
▶
Confirm by pressing (OK).
8.2
Adapting the heating settings
8.2.1
Setting the maximum heating output
The maximum heating output for the product is set to Auto
at the factory. If you want to set a fixed maximum heat out-
put, you can use diagnostics code D.000 to define a value
that corresponds to the product output in kW.
8.2.2
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. Switching on
domestic hot water mode during the burner anti-cycling time
has no effect. You can use diagnostics code D.002 to set the
maximum burner anti-cycling time (factory 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:
Set maximum burner anti-cycling time
T
(target)
min
Flow
℃
1
5
30
2.0
4.0
35
2.0
4.0
40
2.0
3.5
45
2.0
3.0
50
2.0
3.0
55
2.0
2.5
60
2.0
2.0
65
2.0
1.5
70
2.0
1.5
75
2.0
1.0
26
10
15
20
25
30
8.5
12.5
16.5
20.5
25.0
7.5
11.0
15.0
18.5
22.0
6.5
10.0
13.0
16.5
19.5
6.0
8.5
11.5
14.0
17.0
5.0
7.5
9.5
12.0
14.0
4.5
6.0
8.0
10.0
11.5
3.5
5.0
6.0
7.5
9.0
2.5
3.5
4.5
5.5
6.5
2.0
2.5
2.5
3.0
3.5
1.0
1.0
1.0
1.0
1.0
Set maximum burner anti-cycling time
T
(target)
min
Flow
℃
35
30
29.0
35
25.5
40
22.5
45
19.5
50
16.5
55
13.5
60
10.5
65
7.0
70
4.0
75
1.0
Note
The remaining burner anti-cycling time following a
regular shutdown in heating mode can be called
up under diagnostics code D.067.
8.2.3
Resetting the remaining burner anti-cycling
time
1st option
Menu → Reset anti-cycl. time
The current burner anti-cycling time appears in the display.
▶
Confirm the burner anti-cycling time reset by pressing
(Select).
2nd option
▶
Press the reset button.
8.2.4
Setting the pump overrun and pump mode
You can set the pump overrun under D.001 (factory setting:
5 min.).
You can use diagnostics code D.018 to set the pump mode
Comfort or Eco.
In the Comfort operating mode, the internal pump is
switched on when the heating flow temperature is not at
Heating off (→ Operating instructions) and the heat demand
is enabled via an external control.
The Eco operating mode (factory setting) is useful for re-
moving residual heat after hot water generation when the
heat demand is extremely low and large target temperature
spreads exist between the hot water generation and heat-
ing mode target values. This prevents living rooms from be-
ing 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.
Installation and maintenance instructions ecoTEC plus 0020261188_00
40
45
50
55
33.0
37.0
41.0
45.0
29.5
33.0
36.5
40.5
26.0
29.0
32.0
35.5
22.5
25.0
27.5
30.5
18.5
21.0
23.5
25.5
15.0
17.0
19.0
20.5
11.5
13.0
14.5
15.5
8.0
9.0
10.0
11.0
4.5
5.0
5.5
6.0
1.0
1.0
1.0
1.0
60
49.5
44.0
38.5
33.0
28.0
22.5
17.0
11.5
6.5
1.0
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