Vaillant VRT 392 - Page 28

Installation Instructions VRT 392 8
Screen Title screen adjustable
operating values
(just display = A)
Remarks Unit Min.
value
Max.
value
Step width/
Selection
possibility
Preset
value
C1 HC1
Information
Flow target (A) Flow temperature
target value
°C 1
C4 Hot water
information
hot water target
temperature (A)
Hot water target
temperature of the
cylinder
°C 1
Cylinder sensor 1 (A) Actual hot water
cylinder temperature
°C 1
Circulation pump
status (A)
On, Off
C9 HC1
Parameter
Set-back
temperature
For the times between
the time windows you
can set a set-back
temperature.
°C 5 30 1 15
Room temperature
control strategy
Determines the type of
room temperature
control
Thermostat on/off
control;
With modulating
control, the boiler flow
temperature is
controlled depending
on the actual and
target room
temperature
Thermostat,
Modulating
Two-point
Distance adjustment For optimum matching
the control process to
the size of the room or
radiator arrangement.
(Positive values: slow-
acting switching
behaviour of the
regulator;
negative values: faster
acting switching
behaviour of the
regulator;
-5 +5 1 0
C16 Hot water
parameters
Legionella
protection day
Weekday or block of
days; cylinder heated
to 70 °C for one hour
OFF, MO, TU,
WE, TH, FR,
SA, SU, MO-
SU
OFF
Start legionella
protection time of
the day
0:00 24:00 0:10 4:00
C24 Service Telephone number Telephone number for
service support
Changing the code
number
0000 9999 each 1 1000
Maintenance date Day/Month/Year
adjustable
C25 Tools Room temperature
display correction
Matching the room
temperature sensor
R-330,5 0
Display contrast 0 15 1 6
C26 Software
versions
Software version
per module (A)
Display of version
number
Table 6.1 Screens in the level for the installer
6 Initial commissioning