Start-Up; Filling The Domestic Hot Water Circuit; Establishing The Power Supply; Switching On The Product - Vaillant aroSTOR VWL B 270/5 Installation And Maintenance Instructions Manual

▶
Remove the covering hood. (→ Page 66)
▶
Remove the black protective cover from the PCB.
▶
Connect the cable for the photovoltaic installation to the
connection terminal (1) on the PCB.
▶
If your photovoltaic installation's control has two control
contacts, connect it to the photovoltaic installation at con-
nection terminal (1) and (2) on the PCB; see "Electronics
box wiring diagram" in the appendix.
–
Connection terminal (1): Lower level of electrical
energy generated by the photovoltaic installation.
–
Connection terminal (2): Upper level of electrical
energy generated by the photovoltaic installation.
6

Start-up

6.1

Filling the domestic hot water circuit

Note
The cylinder must always be filled with water be-
fore the heating coil is activated. Otherwise, the
component will be damaged and the guarantee
will be voided.
1. Disconnect the product from the power grid.
2. Open the highest domestic hot water draw-off point in
the installation.
3. Open the stopcock upstream of the safety assembly on
the cold water inlet.
4. Fill the domestic hot water cylinder until water escapes
at the highest draw-off point.
5. Close the domestic hot water draw-off point.
6.2

Establishing the power supply

Caution.
Risk of material damage due to high con-
nected voltage.
At mains voltages greater than 253 V, elec-
tronic components may be damaged.
▶
Make sure that the rated voltage of the
mains is 230 V.
Caution.
Risk of material damage due to overheat-
ing.
The product must only be operated when the
domestic hot water cylinder is full.
▶
Ensure that the domestic hot water cylin-
der is full and purged, before establishing
the power supply.
▶
Permanently connect the power supply cable to the
power supply via an all-pole electrical partition which can
be switched off (e.g. a circuit breaker).
72
6.3

Switching on the product

1
1. Before starting up the product, ensure that the plugs
(1) have been removed from the condensate discharge
connection.
2. Ensure that the stopcock upstream of the safety as-
sembly at the cold water inlet is open.
3. Before switching on the power supply, ensure that the
domestic hot water cylinder is full.
4. Ensure that the product has been connected to the
power supply.
5. Press the product's on/off button.
◁
The display switches on.
◁
A green LED lights up on the display.
◁
The background lighting on the display flashes and
prompts you to set the language.
–
Turn the rotary knob to set the language. Press
the rotary knob to confirm the selection.
◁
The product only offers you the language selection
when it is switched on for the first time. However,
you have the option to change the language set-
ting, → Operating instructions.
◁
The heat pump only starts when the cold water
temperature is below the set water temperature and
when, according to the operating programme, the
switch-on time corresponds to the heat-up time and
heating is permitted by the electricity tariff.
◁
When the heat pump is running, there is an air flow
at the air inlet and outlet.
Note
After the initial start-up, depending on the air
intake temperature and cold water temperat-
ure, the heat pump requires 5 to 12 hours to
reach a temperature of 55 °C.
Note
The thermodynamic water heater operates
with the heat pump as priority if the tem-
perature of the intake air is within a range
between -7 °C and +45 °C. Outside of this
temperature range, the domestic hot water
is only generated via the electric back-up
heater.
Installation and maintenance instructions 8000015884_00