Conrad FHT80B-3 Betriebsanleitung PDF herunterladen (Seite 7)

4. General information

The radio-controlled radiator thermostat system has a number of advantages compared with

simple mechanical thermostats:

• The system is separated into radiator-mounted valve operating mechanisms and freely

positionable operation and control units (the ‘FHT80B-3’ heating control supplied here, for

example), which makes it easy to carry out all the necessary settings.

• The time program option makes it possible to adapt the system to the lifestyle of its users,

so that the room is always comfortably warm when it is used.

At other times energy can be saved by reducing the temperature. The inconvenient, manual

turning up and turning down of thermostats is no longer necessary.

• A calcification protection function is integrated into the system. Once a week (the time can

be set) the valve operating mechanism opens and closes the valve to prevent lime deposits

from blocking the valve.

• If a room’s windows are monitored by one or several ‘FHT80TF-2’ door/window contact

sensors, then the control unit automatically reduces the target temperature while the room

is aired.

Once the windows have been closed, the controller automatically restores the original

temperature.

• The ‘FHT80B-3’ heating control also facilitates the bi-directional communication with the

‘FHZ1000’ home radio central unit, which can perform universal control tasks.

This means that changes to the temperature settings or the time program can also

be carried out via the ‘FHZ1000’.

a) Functionality

The room temperature is measured and compared to the target temperature in the ‘FHT80B-

3’ heating control (set via the time program or manually).

The difference is used to calculate how far the valve has to be opened or closed to obtain the

desired temperature. Within a time period of approx. 2 minutes commands are then radio-

transmitted to the ‘FHT8V’ valve operating mechanism that is mounted to the radiator. The

valve operating mechanism then reduces or increases the heat accordingly.

The heating control’s integrated receiver also allows the ‘FHT80B-3’ to receive the status

signals from up to 4 ‘FHT80TF-2’ door/window contact sensors.

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Conrad FHT80B-3 Betriebsanleitung Seite 7