Starting Up The Product - Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

Note
Path details at the start of a section specify how to
access this function, e.g. Menu ¬ Information ¬
Contact data.
4.4

Starting up the product

4.4.1 Opening the isolator devices
1. Ask the competent person who installed the product to
explain to you where these isolator devices are located
and how to handle them.
2. If installed, open the service valves in the heating in-
stallation's flow and return.
3. Open the cold-water isolation valve.
4.4.2 Switching on the product
Note
The product does not have an on/off switch. The
product is switched on and ready for operation as
soon as it is connected to the power grid.
1. Ensure that the product casing is properly installed.
2. Use the partition that is installed on-site (e.g. fuses or
power switches) to switch on the product.
◁
The "basic display" appears in the product's operat-
ing display.
◁
The basic display appears on the system control
display.
4.4.3 Adjusting the target cylinder temperature
Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
Have a competent person inform you
about the measures that should be taken
to protect against Legionella in your in-
stallation.
▶
Do not set any water temperatures below
60 °C without consulting the competent
person first.
Danger!
Risk of death from legionella!
If you decrease the cylinder temperature, the
risk of legionella spreading increases.
▶
Activate the anti-legionella times in the
system control and set them.
In order to achieve energy-efficient domestic hot water gen-
eration predominantly from the energy extracted from the
environment, the factory setting for the desired domestic hot
water temperature must be adjusted on the system control.
▶
To do this, adjust the target cylinder temperature (De-
sired DHW circuit temperature) to between 50 and
55 °C.
0020257319_02 Hydraulic station Operating instructions
◁
Depending on the source of energy obtained from the
environment, domestic hot water outlet temperatures
of between 50 and 55 °C are reached.
4.4.4 Yield indicator
You can use this function to display the environmental
energy yield as a cumulative value for a period of a day,
a month and the total for the heating, domestic hot water
generation and cooling modes.
You can displays the working figure for a period of a month
and the total for the heating and domestic hot water genera-
tion modes. The working figure is the ratio of thermal energy
generated to the operating current used. Monthly values may
vary considerably since, for example, in the summer only
domestic hot water generation is used. A large number of
factors influence this estimate, e.g. the type of heating in-
stallation (direct heating mode = low flow temperature or in-
direct heating mode via buffer cylinder = high flow temperat-
ure). This figure may therefore deviate by up to 20%.
The working figures only record the power consumption of
internal components, not of external components such as
external heating circuit pumps, valves, etc.
4.4.5 Displaying the Live Monitor
Menu → Live Monitor
You can use the Live Monitor to view the current status of
the product.
4.4.6 Displaying the building circuit pressure
Menu → Live Monitor→ Building circuit pressure
You can use this function to display the current filling pres-
sure in the heating installation.
4.4.7 Reading the operating statistics
Menu → Information → Heating op. hours
Menu → Information → DHW operating hours
Menu → Information → Cooling op. hours
Menu → Information → Total operating hours
You can use this function to display the operating hours
for heating mode, for domestic hot water mode, for cooling
mode and for overall operation.
4.4.8 Setting the language
1. Select OK twice to confirm the set language.
2. If you want to set another language, press and hold
and at the same time.
3. Also press the reset button for a short time.
4. Press and hold and
language setting.
5. Select the required language by pressing
6. Press (OK) to confirm your selection.
7. Once you have set the correct language, press (OK)
again to confirm this.
4.4.9 Set display contrast
Menu → Basic settings → Display contrast
▶
You can set the contrast here.
Operation 4
until the display shows the
or .
7