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4 Function
12 Operating instructions ecoTEC pure 0020258017_00
Conditions: The temperature is controlled via the
domestic hot water cylinder's temperature sensor.
Set the hot water temperature on the
controller. See the instructions for the
controller.
4.6 Switching off the product's
functions
4.6.1 Switching off heating mode
(Summer mode)
Conditions: The temperature is controlled by the
product
Press .
The heating flow temperature
flashes in the display.
Press and press and hold until
OFF is shown in the display.
is shown in the display.
Confirm by pressing .
Heating mode is switched off.
Press .
The display switches to the basic
display.
Conditions: Controller-regulated temperature
You cannot switch off heating mode on
the product. See the instructions for the
controller.
4.6.2 Switching off the hot water
handling mode
Conditions: Temperature regulated by the product
or by the room temperature controller
Press .
The domestic hot water temperature
now flashes in the display.
Press and press and hold until
OFF is shown in the display.
is shown in the display.
Press to confirm.
Hot water generation is switched off.
Press .
The display switches to the basic
display.
4.7 Guaranteeing the correct
filling pressure in the heating
circuit
4.7.1 Checking the system pressure
Note
Your product has a pressure
sensor and a digital pressure
indicator.
The product switches to fault mode
if the pressure falls below the re-
quired system pressure (below
0.05 MPa (0.5 bar)). If the heating
installation extends over several
floors, a higher system pressure
may be necessary. Ask your com-
petent person for details.
1. Press twice.
The current system pressure is
shown in the display.
2. Check the system pressure on the
display.
1 / 2
System pressure: 0.08 0.2 MPa
(0.80 2.0 bar)
The system pressure is in the intended
pressure range.
2 / 2
System pressure: < 0.08 MPa
(< 0.80 bar)
Fill the heating installation.
( Page 13)
When you have reached a suffi-
cient pressure range, the display
disappears after 20 seconds.
12


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