26
FA ROTEX RoCon mb • 09/2017
3
x
Operation
5. Set the rotary switch to the
"Operating Mode"
position and set the required operating mode (see chap. 3.4).
Detailed explanations and possible setting values of this function can be found in
chap. 6.2.1.
3.6.11 Anti-legionella system
This function is used to prevent bacterial contamination in the hot
water storage tank. Refer to the national regulations for the
precise drinking water hygiene regulations.
When the Legionella protection function is activated (parameter
[Anti-Legionella day]), the connected hot water storage tank is
heated up to a disinfection temperature 1x daily or 1x weekly. The
anti-legionella system function is active for one hour.
The setting of the parameters for the anti-legionella system is
carried out in the
"Configuration"
rotary switch setting at the
"DHW Configuration"
level.
With the factory settings, the storage tank is recharged at 03:30
hours if the target hot water temperature at this point in time is
below 65 °C.
Detailed explanations and possible setting values of this function can be found in
chap. 6.2.4.
3.6.12 Resetting to factory settings (reset)
If the ROTEX HPSU monobloc compact no longer functions cor-
rectly and no other cause for the incorrect behaviour can be de-
termined, it may be appropriate to reset all controller settings to
the factory settings. There are 3 ways of doing this.
Option 1
With
user access rights
the
switching time programs
can be
reset to the factory settings in the "Special Level", according to
tab. 3-9.
1. Push the Exit button for at least 5 s.
Menu
"Special Level"
is displayed.
2. Use the rotary button to select the
"Timeprog Reset"
program.
3. Execute the program by briefly pressing on the rotary button.
The respective values are reset to the factory setting.
4. Use the rotary button to select
"Return"
.
5. Confirm the selection with a brief push of the rotary button.
Option 2
With
technician access rights
all
customer-specific pa-
rameter settings
can be reset to the factory settings in the
"Special Level", according to tab. 6-1 to tab. 6-11.
1. Enter the technician code (see chap. 3.6.1).
After entering, the
"Setup"
level is displayed.
2. Push the Exit button for at least 5 s.
Menu
"Special Level"
is displayed.
3. Use the rotary button to select the
"Reset?"
program.
4. Execute the program by briefly pressing on the rotary button.
The respective values are reset to the factory setting.
5. Use the rotary button to select
"Return"
.
6. Confirm the selection with a brief push of the rotary button.
Fig. 3-17 Processes of the Air Purge
WARNING!
There is a danger of scalding at target hot water
temperatures over 60 °C. This is possible when
using solar energy if the Legionella protection or
Smart Grid functions are activated or the target
hot water temperature is set higher than 60 °C.
●
Install scald protection in the hot water distri-
bution line (e.g. VTA32,
15 60 15 + Screw
set 1",
15 60 16).
3UVB1
3UVB1
3UVB1
The Legionella protection function is deactivated in the
factory in the ROTEX HPSU monobloc compact, as the
risk of contamination is very low due to the following
reasons:
– Low volume of the heat exchanger (stainless steel) for heat-
ing drinking water.
– Frequent, complete water exchange "first-in-first-out".
– No stagnant water areas in the stored drinking water.
Heating the hot water to the disinfection temperature is
carried out irrespective of the target hot water tempera-
tures set by the user or the heating technician.
A connected circulation pump is automatically switched on
during thermal disinfection.
