Handing The Product Over To The Operator; Adapting The Unit To The Installation; Calling Up The Installer Level; Optimising The Unit's Energy Consumption - Vaillant aroSTOR VWL BM 270/5 Installation And Maintenance Instructions Manual

7 Handing the product over to the operator

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

Optimising the unit's energy consumption

The domestic hot water generation can take place using a
back-up heater via the integrated heat exchanger.
1 Output 14-15
Caution.
Risk of destruction of the PCB.
If there is a voltage of 230 V at the floor-
standing boiler contact, there is a risk that the
PCB will be damaged.
18
▶
▶
▶
8.3
Condition: Existing photovoltaic installation
▶
Ph 1
N 2
N 3
Ph 4
Ph 5
N 6
▶
7
8
▶
9
▶
10
11
▶
N 12
▶
Ph 13
1
14
▶
15
Installation and maintenance instructions aroSTOR 0020290840_00
▶
Measure the voltage before connecting.
Remove the covering hood. (→ Page 11)
Remove the black covering hood from the PCB.
Use a two-wire cable (each with a cross-section of 1.5
mm² to connect the potential-free contact between output
14-15 on the PCB of the thermodynamic water heater
and the back-up heater's thermostat input.
Note
The output alarm is not activated. It is conver-
ted to a control output for the floor-standing
boiler.
The end user can select either the electric
back-up heater or the floor-standing boiler
(e.g. summer or winter mode). The electric
back-up heater is selected by default.

Activating and setting photovoltaic mode

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.
– Factory setting: 60 ℃
◁
PV MAX = High level of photovoltaic power genera-
tion. The heat pump and the immersion heater gen-
erate an increased domestic hot water temperature.
The increased domestic hot water temperature must
be between the domestic hot water temperature of
the PV ECO mode and 65 °C.
– Factory setting: 65 ℃
Turn the rotary knob to set the mode.INST.MENU PV
MODE
◁
You can select which function has higher priority
(photovoltaic mode or frost protection/eco mode)
Select YES.
Press the rotary knob to confirm the selection.
Press the menu button.
Set the required domestic hot water temperature.
Turn the rotary knob to set the priority. INST.MENU →
PV MODE → PRIORITY.
◁
YES : The signals from connection plugs no. 1 and
no. 2 have priority over the frost protection and eco
mode.
◁
no : Frost protection and eco mode have priority over
the signals from connection plugs no. 1 and no. 2.