Vaillant ecoCRAFT exclusive Operating Instructions Manual page 18

7 Decommissioning
knobs for the target heating
flow and cylinder values to
the anti-clockwise end stop.
▶
Do not disconnect the
product from the power
mains when it is in normal
mode.
▶
Leave the main switch in
position 1 in normal mode.
3
2
1. Turn the rotary knob for the cylinder
temperature (3) to the anti-clockwise
end stop.
2. Turn the rotary knob for the heating
flow temperature (2) to the anti-clock-
wise end stop.
3. If the fan continues to run, wait until it
stops.
◁
"Fan overrun" is shown in the
display.
4. Turn the main switch (1) to position 0.
5. Close the gas stopcock and the cold-
water isolation valve.
Note
The isolators are not included
in the scope of delivery for your
product. They are installed on-
site by the competent person.
Ask the competent person to
explain where the isolators are
located and how they are oper-
ated.
18
7.1.1 Preventing frost damage
The product is equipped with a frost pro-
tection function.
If the heating flow temperature falls be-
low 5 °C when the main switch is switched
on, the product starts up and heats the cir-
culating water on both the heating side
and the hot-water side (if available) to ap-
prox. 30 °C.
Caution.
Risk of material damage due
to frost.
The frost protection function
cannot guarantee flow through
the entire heating installation,
which means that parts of the
heating installation may freeze
and therefore become dam-
1
aged.
▶
▶
Consult a competent person about this.
7.1.2 Draining the heating
installation
Another way to protect the heating install-
ation and the product from frost for very
long switch-off times is to drain them com-
pletely.
▶
Consult a competent person about this.
Operating instructions ecoCRAFT exclusive 0020149575_01
During a period of frost, en-
sure that the heating installa-
tion remains in operation and
that all rooms are sufficiently
heated, even when you are
away.