*****INTERNAL*****30 R_D proof- 26.10.2022 / 09:15:46- VaillantGroup\DOC-agt\Brand\VIH_QW_190_6\ENG\OI-II_GB_0020291525
0020291525_04 Installation and maintenance instructions
41
Days after starting the func-
tion
Target flow temperature for
this day [°C]
1
25
2
30
3
35
4
40
5
45
6
–
12
45
13
40
14
35
15
30
16
25
17
–
23
10 (frost protection function,
pump in operation)
24
30
25
35
26
40
27
45
28
35
29
25
The day is always changed at 00:00, irrespective of when
the function starts.
After a mains Off/On, screed drying starts with the last active
day.
The function ends automatically when the last day of the
temperature profile has elapsed (day = 29) or if you set the
start day to 0 (day = 0).
8.18
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, building
circuit
60
40
20
0
2000
1000
A
B
A
Flow rate in the building
circuit (l/h)
B
Pressure loss (kPa)
9.3
Total pressure loss in the product, domestic
hot water
60
40
20
0
2000
1000
A
B
A
Flow rate in the do-
mestic hot water circuit
(l/h)
B
Pressure loss (kPa)
9.4
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.
▶
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.
