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Installation instructions VRC 430f 0020042470_0114
6.4 Function floor drying
The floor-drying function is used to "heat dry” a freshly-
laid heating layer according to building regulations.
If this function is activated, all selected operating modes
are stopped.
The flow temperature of the controlled heating circuit is
controlled according to a pre-set program regardless of
the outside temperature.
Starting temperature: 25 °C
Days after start-
ing the function
Target feed temperature for this day
[°C]
125
230
335
440
545
6-12 45
13 40
14 35
15 30
16 25
17-23 10
(frost protection function,
pump in operation)
24 30
25 35
26 40
27 45
28 35
29 25
Table 6.3 Temperature profile, floor drying
In screen C23 of the expert technician level, the
VRC 430f controller shows the floor-drying operating
mode with the current day and the associated target
flow temperature.
The current day can be set manually.
When the function is started, the current time of the
start is saved. The day is changed at this time precisely.
6.5 Handing over the appliance to the owner
The operator of the VRC 430f must receive instructions
on how to handle and operate of the controller.
Pass on the instruction manuals and documents for
the appliance to the operator for safe keeping.
Inform the operator what the part number is.
Make the operator aware of the need to keep the
instruction manuals within reach of the controller.
Go through the operating instructions with the oper-
ator and answer any questions if necessary.
6.6 Faults
h
Note!
If the outdoor sensor or controller stops work-
ing, the emergency-control setting is activated.
If the wireless outdoor sensor fails an outside
temperature of 0 °C is assumed.
Even if the controller fails, the system will con-
tinue to be controlled via the radio receiver
unit. (Exception: the switch-on room temp. is
no longer working.)
6.7 Special features
Battery power-save mode
h
Note!
The screen is usually switched off to save ener-
gy. This increases the service life of the batter-
ies.
The display and the lighting are activated as
soon as you turn or click one of the dials. If the
appliance is not used for more than one minute
the screen returns to the basic display returns
and switches off after approx. 10 minutes.
Status and fault messages to the radio receiver unit
green LED on: everything OK
red LED on: Error (no communication with ap-
pliance, controller or wireless out-
door sensor)
red LED flashes
briefly:
Radio transmission
green LED flashes: the "learn" process was started via
a button (only relevant for parts
replacement)
6.8 Maintenance
Point out to the operator that the radio outdoor
sensor (solar cell) should be cleaned at least once a
year to ensure that the power supply is maintained.
14
6 Initial commissioning
34


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