Vaillant ecoVIT exclusiv VKK 226/4-H Operating Instructions Manual - page 9
Operation 4
0020258609_00 ecoVIT exclusiv Operating instructions
9
4.5
Setting the cylinder temperature
Conditions
: Control connected
1
2
1
Display
2
Cylinder temperature
rotary knob
▶
Set the rotary knob for the cylinder temperature
(2)
as
far as it will go clockwise so that the control can work
without any faults occurring.
▶
Do not set the required cylinder temperature on the
rotary knob for the cylinder temperature; set the cylinder
temperature on the control instead.
Conditions
: No control connected
1
2
1
Display
2
Cylinder temperature
rotary knob
▶
Set the rotary knob for the cylinder temperature
(2)
to
the required cylinder temperature.
Position of the rotary knob for setting the cylinder tem-
perature (
→
Page 9)
◁
The required temperature is shown in the display
(1)
. After three seconds, this display goes out and
the default display reappears (current heating flow
temperature).
Note
The maximum cylinder temperature is set in
the factory at 65 °C. This can be defined by
the competent person to be between 50 °C
and 70 °C.
Note
If a cylinder temperature lower than 60 °C is
required, we recommend that you regularly
use the anti-legionella function via the control.
Position
Meaning
Temperature
Fully left
Minimum cylinder
temperature = frost
protection
15
℃
Centre
Medium cylinder
temperature
≈
50
℃
Fully right
Maximum cylinder
temperature
65
℃
4.6
Switching off the functions
4.6.1
Switching off heating mode
Note
You can completely switch off heating mode in
summer without switching off the hot water gener-
ation.
1
1
Rotary knob for setting
the heating flow temper-
ature
▶
To switch off heating mode, turn the rotary knob for set-
ting the heating flow temperature
(1)
as far as it will go
anti-clockwise. If the product is controlled by a control,
use this control to switch off heating mode and leave the
rotary knob at the clockwise end stop.
Note
The product's internal frost protection is there-
fore guaranteed whether there is a control or
not.
4.6.2
Switching off cylinder charging mode
(using the VRC 630/VRS 620 control)
1.
Leave the rotary knob for the cylinder temperature at
the clockwise end stop.
2.
Switch the cylinder circuit to "OFF" on the control.
Note
If the VRC 450 or VRC 700 control is avail-
able, switch cylinder charging mode off in
accordance with the section "Switching off
cylinder charging mode (without a control)
(
→
Page 10)".