Starting Up The Optional System Control; Adapting The Unit To The Heating Installation; Configuring The Heating Installation; Total Pressure Loss In The Product, Heating Circuit And Domestic Hot Water - Vaillant VWL Series Operating Instructions Manual

8.16

Starting up the optional system control

The following work for starting up the system was carried
out:
–
The system control and the outdoor temperature sensor
have been installed and wired.
–
Start-up of all system components (except for the system
control) is complete.
Follow the installation assistant and the operating and install-
ation instructions for the system control.
9 Adapting the unit to the heating
installation
9.1

Configuring the heating installation

To adjust the water flow rate that is created by the heat
pump to the relevant installation, the maximum available
remaining feed head can be set for the heat pump in heating
and domestic hot water mode and the output of the building
circuit pump for heating, cooling and domestic hot water.
Since the heat pump installation regulates the building circuit
pump at the nominal flow in automatic mode, only set the
parameters where required.
You can call up these parameters via Menu → Installer level
→ Configuration.
The adjustment range for the remaining feed head is
between 20 kPa (200 mbar) and 90 kPa (900 mbar). The
heat pump operates at its optimum level when the nominal
flow can be achieved by setting the available pressure
(Delta T = 5 K).
9.2 Total pressure loss in the product, heating
circuit and domestic hot water
B
60
40
20
1000
0
A Flow rate in the building
circuit (l/h)
9.3

Instructing the end user

Danger!
Risk of death from legionella.
Legionella multiply at temperatures below
60 °C.
▶
Ensure that the end user is familiar with
all of the Anti-legionella measures in order
to comply with the applicable regulations
regarding legionella prevention.
0020291544_01 Hydraulic Station Installation and maintenance instructions

Adapting the unit to the heating installation 9

2000
A
B Pressure loss (kPa)
▶
Explain to the end user how the safety devices work and
where they are located.
▶
Inform the end user about all of the anti-legionella meas-
ures.
▶
Inform the end user how to handle the product.
▶
Draw particular attention to the safety warnings, which
the end user must follow.
▶
Inform the end user that they must have the product
maintained in accordance with the specified intervals.
▶
Explain to the end user how to check the system's water
volume/filling pressure.
▶
Pass all of the instructions and documentation for the
product to the end user for safe-keeping.

10 Troubleshooting

10.1

Contacting your service partner

If you contact your service partner, please mention if pos-
sible:
–
The fault code that is displayed (F.xx)
–
The status code (S.xx) that is displayed by the product in
the Live Monitor
10.2

Reading off the fault codes

If a fault develops in the product, the display shows a fault
code F.xx.
Fault codes have priority over all other displays.
If multiple faults occur at the same time, the display shows
the corresponding fault codes for two seconds each in se-
quence.
▶
Eliminate the fault.
▶
To start up the product again, press the reset button (
Operating instructions).
▶
If you are unable to eliminate the fault and the fault re-
curs despite several reset attempts, contact Customer
Service.
10.3

Querying the fault memory

The product has a fault memory. You can use this to query
the last ten faults that occurred in chronological order.
To call up the fault memory, select Menu → Installer level →
List of faults.
The display shows:
–
Number of faults that occurred
–
The fault that is currently selected with fault number F.xx
–
A plain text display explaining the fault.
▶
Use the or button to display the last ten faults that
occurred.
37