Switching Off Heating Mode (Summer Mode); Temporarily Shutting Down The Boiler; Protecting The Heating System Against Frost; Activating The Frost Protection Function - Vaillant ecoTEC pro Operating Instructions Manual

5.5 Switching off Heating mode ( summer mode)
off

5.8 Switching off Heating mode (summer mode)

You can switch off the heating mode in summer without
switching off the domestic hot water supply.
> Press the right-hand selection button
The value of the heating flow temperature appears in the
display.
> Use the minus button
water flow temperature to "Off".
> Confirm the change by pressing the right-hand selection
button (" ").
Heating mode is switched off. The
display.
To switch Heating mode on again:
> Use the plus button
heating flow temperature.
> Confirm the change by pressing the right-hand selection
button (" ").
5.6

Temporarily shutting down the boiler

Caution!
b
Risk of damage caused by frost.
Anti-freeze and monitoring devices are only
active while the boiler is connected up to
the power mains and the on/off switch is
on.
> Do not isolate the boiler from the power
mains.
> Leave your boiler switched on at the on/
off switch.
> Only switch the boiler on and off in nor-
mal mode using the controller.
> Make sure that the boiler cannot become
damaged by frost.
Operating instructions ecoTEC pro 0020129673_00
(" ").
to set the domestic hot
symbol appears on the
to set your required
2
50
5.9 Switching off the boiler
> Press the on/off switch (1) to switch the boiler off.
If the boiler is switched off, the display (2) turns off.
i
If the boiler is going to be unused for longer
periods (e.g. holiday), you should also close the
gas isolator cock and the cold water stop valve,
but only if there is no risk of frost.
5.7

Protecting the heating system against frost

5.7.1

Activating the frost protection function

Your Vaillant ecoTEC is fitted with a frost protection func-
tion for each boiler:
If the heating flow temperature falls below 5 °C when the
on/off switch is on, the boiler comes into operation and
heats the heat generation circuit to approx. 30 °C on both
the heating side and the domestic hot water side (if availa-
ble).
Caution!
b
Risk of damage caused by frost.
The frost protection function cannot guar-
antee flow through the entire heating
installation, which means that parts of the
heating installation may freeze and become
damaged.
> Make sure that the boiler remains on
whilst you are away.
> Make sure that the rooms are heated suf-
ficiently.
Operation 5
1
15