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Days after starting the func-
tion
14
15
16
17–23
24
25
26
27
28
29
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).
8.18.1 Activating the screed drying
1.
If required, change the power supply and the output of
the back-up boiler (external boiler or electric back-up
heater).
2.
To do this, call up the installation assistant again:
MENU | SETTINGS | Installer level | Installation as-
sistant.
3.
Call up MENU | SETTINGS | Installer level | Screed
drying, day (can only be selected if no system control
is installed).
–
Activates screed drying for freshly laid screed in ac-
cordance with the settings under the screed drying
profile.
4.
Set the start day and the temperature, and confirm.
◁
The screed drying is started and the display shows
the current flow temperature and the right-hand
status bar shows the system pressure.
▽
In the current programme, the current status
messages for the system can be called up in the
display.
▽
The settings for the function can be changed in the
current programme.
▶
Return to the programme steps in order to
change the settings or the current day.
◁
If the screed drying has not been run successfully
by day 29, the display shows the message Screed
drying ending.
▽
If a fault occurs during screed drying, the display
shows the message Fault.
▶
Select a new start day for the screed drying or
interrupt the process.
228
Target flow temperature for
this day [°C]
35
30
25
10 (frost protection function,
pump in operation)
30
35
40
45
35
25
8.19
Starting up the optional system control
Note
Install the system control in the living room, e.g.
the living room as the control room. By activating
the "Room temperature modulation" function in
the system control, no additional single-room ther-
mostat is required in the control room (e.g. living
room). An existing thermostat in the control room
should always be completely open. As a result, in-
creased water volume is available to the heating
system for robust operation.
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.
8.20
Preventing low water pressure in the heating
circuit
The product has a pressure sensor in the heating circuit and
a digital pressure display. You have multiple options for dis-
playing the pressure on the display; see operating instruc-
tions. The product also has a manometer. To read the pres-
sure on the manometer, remove the upper front casing.
▶
Check whether the pressure is between 1 and 1.5 bar.
◁
If the heating installation extends over several
storeys, higher filling pressures may be required to
avoid air entering the heating installation.
◁
If the pressure in the heating circuit is too low, top up
the heating water. (→ Page 224)
8.21
Checking function and leak-tightness
Before you hand the product over to the end user:
▶
Check the heating installation (heat generator and sys-
tem) and the domestic hot water pipes for tightness.
▶
Check whether the drain pipework for the purging con-
nections has been installed correctly.
9
Adapting the unit to the heating
installation
9.1
Configuring the heating installation
The installation assistant is launched when the product is
switched on for the first time. When the installation assistant
is complete, you can further adjust the parameters of the in-
stallation assistant, for example, in the Configuration menu.
To adjust the water flow rate generated by the heat pump
to match the specific installation, you can set the maximum
available pressure for the heat pump in the heating and do-
mestic hot water mode.
These two parameters can be adjusted using diagnostics
codes D.122 and D.124.
Call up MENU | SETTINGS | Installer level | Diagnostics
codes | 100 - 199 | D.122 Building circuit heating conf..
Installation and maintenance instructions 8000017440_FT
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