Vaillant aroSTOR VWL B 270/5 Instrucciones De Funcionamiento página 53

HOLI.RETUR. (return from holiday) and
the number of days remaining.
▶
Press the menu button.
▶
Turn the rotary knob until the HOLI
DAYS menu appears in the display.
▶
Press the rotary knob.
▶
Turn the rotary knob to set the required
number of days' holiday.
▶
Press the rotary knob.
▶
Press the menu button to return to the
original display.
▶
If you return from holiday earlier than
planned, repeat the steps described
above and set the number of days' holi-
day to 0.
4.9 Setting the boost mode
This mode enables temporary simultan-
eous operation of the back-up heater
(immersion heater) and the heat pump, in
order to heat up the domestic hot water
more quickly. The (back-up heater in op-
eration) symbol and the display flash. If
the set target temperature in the domestic
hot water cylinder is reached, the mode is
automatically deactivated.
This mode is automatically deactivated at
most 24 hours after it was activated.
This mode temporarily suspends the set
time programming.
▶
Press the menu button.
▶
Turn the rotary knob until the BOOST
menu appears in the display.
▶
Press the rotary knob.
▶
Turn the rotary knob to activate the
BOOST mode.
▶
Press the rotary knob.
▶
Press the menu button to return to the
original display.
8000015877_00 Operating instructions
4.10 Setting limp home mode
This mode enables a limp home mode for
cases where use of the heat pump is pre-
vented (air pipes not yet connected, dust-
intensive work in the product's vicinity, op-
erating at low temperatures, etc.). In this
mode, energy savings cannot be achieved
by using the heat pump. It should therefore
be used in exceptional circumstances and
for a limited time period only.
▶
Press the menu button.
▶
Turn the rotary knob until the following
menu appears on the display:
Condition: Electric back-up heater (ELEC.BACKP) has
been selected as back-up heating.
– ELEC. MODE
▶
Press the rotary knob.
▶
Turn the rotary knob to activate the limp
home mode.
▶
Press the rotary knob.
▶
Press the menu button to return to the
original display.
4.11 Activating the anti-legionella
function
Danger!
Risk of death from legionella.
Legionella multiply at temperat-
ures below 60 °C.
▶
Have a competent person
inform you about the meas-
ures that should be taken to
protect against Legionella in
your installation.
▶
Do not set any water temper-
atures below 60 °C without
consulting the competent
person first.
Contact your competent person in order to
have them activate or deactivate the anti-
legionella function or to find out more in-
formation about the anti-legionella func-
tion.
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