Operation
14
Operating instructions ecoTEC plus 0020134822_01
4
4.8
Hot water generation
a
Danger!
Risk of being scalded by hot water!
There is a danger of scalding at the hot
water draw-off points when the tempera-
tures are in excess of 60 °C. Young children
and elderly persons are particularly at risk,
even at lower temperatures.
>
Select the temperature so that nobody is
at risk.
a
Danger!
Possible risk of death caused by
legionella formation!
In domestic hot water cylinders there is a
risk of legionella forming, which can cause
illness.
>
If the unit is used for post-heating within
a solar-supported drinking water heating
installation, set the domestic hot water
outlet temperature to at least 60 °C.
b
Caution.
Material damage due to calcification.
If the water hardness is more than
3.57 mol/m
3
(=357 mg/l), there is a risk of
calcification.
>
Set the maximum water temperature to
50 °C.
To generate hot water in conjunction with the VU unit type,
a VIH-type domestic hot water cylinder must be connected
to the boiler.
45
DHW temperature
Back
4.11
Setting the hot water temperature
>
Press the on/off switch to switch on the boiler.
>
Press the left-hand selector button
("
").
The hot water temperature that is set is shown flashing on
the display.
>
Use the minus button
or the plus button
to change the hot water temperature.
>
Confirm the change by pressing the right-hand selector
button
("OK").
If your controller is connected to the boiler via a dual-cable
eBUS line, you can set the target hot water target tempera-
ture on the controller. Ask your competent person whether
or not your controller is connected via a dual-cable eBUS
line.
If your controller is connected via a dual-cable eBUS line:
>
Set the hot water temperature on the boiler to the maxi-
mum possible temperature.
>
Set the desired hot water temperature
4.9
Setting a room thermostat or weather
compensator
2
1
4.12
Setting the room thermostat/weather
compensator
>
Set the room thermostat, weather compensator (
1
) and
thermostatic radiator valves (
2
) as specified in the oper-
ating manuals for these accessories.
4.10
Switching off the functions of the boiler
4.10.1
Switching off hot water generation
(VU boiler)
If a domestic hot water cylinder is connected, you can
switch off the cylinder charging without switching off Heat-
ing mode.
