Vaillant ecoTEC plus VUI Series Installation And Maintenance Instructions Manual page 44

A
1 2
1400
1200
1000
800
600
400
200
0
0 2 4 6 8
A Potential heating sys-
tem cycles [l/h]
B Maximum heat output
of underfloor heating
systems [kW]
Note
The diagram is only used as a rough guide. It
does not replace planning. Furthermore, there is
no functional warranty for a heating system, since
each heating system is individual and requires
planning.
10.3.8 Setting the heat curve
B
4
90
80
70
60
50
40
30
20
15 10 5
A Outdoor temperature °C
The figure shows the possible heat curves of 0.1 to 4.0 for a
target room temperature of 20 °C. If, for example, heat curve
0.4 is selected, a flow temperature of 40 °C is maintained at
an outdoor temperature of -15 °C.
44
3 4
10 12 14 16 18
1 3 K system
2 5 K system
3 8 K system
4 10 K system
3.5 3 2.5 2 1.8
0 -5 -10 -15 -20
B Target flow temperature
°C
B
70
60
50
40
30
22
15 10
20
C D
B
18
20
A Outdoor temperature °C
B Target flow temperature
°C
If the heat curve 0.4 is selected and 21 °C is specified for the
target room temperature, the heat curve is then translated,
as shown in the figure. The heat curve is displaced accord-
ing to the value of the target room temperature along axis a
which is angled at 45°. At an outdoor temperature of -15 °C,
the control system provides a flow temperature of 45 °C.
▶
Navigate to MENU → SETTINGS → Installer level → In-
stallation configuration → Heating → Heat curve:.
▶
Use the scroll bar to select the required value.
▶
Exit the menu level. (→ Section 8.8)
10.4 Adapting the domestic hot water settings
10.4.1 Setting the domestic hot water temperature
Danger!
Risk of death from legionella.
1.5
Legionella multiply at temperatures below
1.2
60 °C.
1.0
▶
Ensure that the end user is familiar with
0.8
all of the Anti-legionella measures in order
0.6
to comply with the applicable regulations
regarding legionella prevention.
0.4
0.2
1. Observe the applicable regulations regarding legionella
0.1
prevention.
A
2. From the basic display, press
3. Set the required domestic hot water temperature.
Validity: Product with system control
▶
First, set the target domestic hot water temperature
on the heat generator's control panel to the maximum
value before you connect the system control (eBUS).
▶
Set the required domestic hot water temperat-
ure on the system control (→ Operating instruc-
tions/installation instructions for the system control).
Condition: System control connected
▶
Check the domestic hot water generation.
(→ Section 9.16)
10.4.2 Setting solar thermal post-heating
Note
Ensure that the heat generator remains switched
on over the summer months.
Installation and maintenance instructions 0020308121_04
5 0 -5 -10 -15
C Target room temperat-
ure °C
D Axis a
.
0.4
-20
A