Filling The Domestic Hot Water Circuit; Switching On The Product; Handing The Product Over To The Operator; Adapting The Unit To The Installation - Vaillant aroSTOR VWL B 200/5 UK Installation And Maintenance Instructions Manual

ments of the water regulations for supplying hygienically
safe potable water.
If required, precautions can be taken to minimise the effects
of the water hardness, for example by installing a water con-
ditioner or a water softener. These devices must be installed
in areas with hard water, in which high water cylinder tem-
peratures above 60 °C are required, particularly at a wa-
ter hardness above 200 ppm. If the product needs to be de-
scaled, this must be carried out by a competent person.
6.2

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.
6.3

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 unit only offers you the language selection
when it is switched on for the first time. However,
you have the opportunity to change the language
setting. To do this, follow the instructions in the
section on setting the language.
◁
The heat pump only starts when the cold water
temperature is below the set water temperature and
when, according to the operating programme, the
18
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.
7 Handing the product over to the
operator
▶
Explain to the operator how the safety devices work and
where they are located.
▶
Inform the operator how to handle the product.
▶
In particular, draw attention to the safety information
which the operator must follow.
▶
Inform the operator of the necessity to have the product
maintained according to the specified intervals.
▶
Pass all of the instructions and documentation for the
product to the operator for safe-keeping.
▶
Inform the operator about measures taken concerning
the air pipe and inform them that they must not make any
changes.
8

Adapting the unit to the installation

8.1

Calling up the installer level

1. Press the menu button.
2. Turn the rotary knob until the INST.MENU menu ap-
pears in the display.
3. Hold down the clock button and the menu button for
three seconds.
◁
The first menu item of the installer level PV MODE
is displayed.
8.2

Activating and setting photovoltaic mode

Condition: Existing photovoltaic installation
▶
If the control for the photovoltaic installation is connected
to plug no. 1 and no. 2 on the product's PCB, you must
activate PV MODE.
◁
The electrical energy generated is stored in the form
of domestic hot water. You can set two efficiency
levels for the photovoltaic installation.
◁
PV ECO = Low level of photovoltaic power gener-
ation. The heat pump generates an increased do-
mestic hot water temperature. The increased do-
mestic hot water temperature must be between the
normal domestic hot water temperature and 60 °C.
Installation and maintenance instructions 0020285063_05