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c) Setting up the radio connection between the control centre and the room control
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1. Operating principle
As with the radio connection between the room control and valve operating mechanism (or control centre and valve
operating mechanism), the radio connection between the control centre and the individual room controls is also provided
with a security code.
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This serves to differentiate between the various room controls. So that the control centre and the respective
room control ‘understand’ each other, the room control must be registered with the control centre, that is, the
security codes are synchronised.
Transmission of the security code from the room control to the control centre takes place automatically.
The control centre’s receiver is permanently switched on and each room control sends its status along with the security
code in turn. The control centre creates an internal list of all the security codes it receives. This list can then be ‘browsed’
and the desired security codes can be confirmed. Then, the corresponding room control is registered with the control
centre and the radio connection is ensured.
When registering the room control, the following order must be observed:
• Switch on the control centre
• Switch on the valve operating mechanism which should form part of the control centre (for example, if you have
purchased the economy set or if you wish to register existing valve operating mechanisms directly with the control
centre)
• Switch on the room control (FHT8b) in accordance with its user manual
• Inspect the list of security codes received by the control centre and confirm (register) the desired room controls.
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In order to ensure that the room control only cooperates with your control centre and not, for example, with
that of your neighbour’s, a room control can only be registered with a single control centre.
If registration is to be carried out on a different control centre, the room control must first be reactivated. You
can find a detailed description of this in the FHT8b room control’s user manual (special functions, ‘CEnt’)
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2. Necessary preparations
The first two steps (switching on the control centre and valve operating mechanism) should already have been carried
out.
• Now switch on all the room controls, as described in the corresponding user manuals.
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All the restarted room controls display the security code for radio communication with the control centre after
the batteries have been inserted. Make a note of this security code (for example, in the table in Appendix A
of this user manual) and alongside it write the name of the room in which the respective room control is
mounted (for example,
Code 0606, bathroom
).
• If you already have room controls that are switched on, remove the batteries and insert them again. Again, make a
note of the code as described before.
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If a room control was already registered with a control centre, the room control must first be reactivated so
that it can be registered again. This is carried out as described in the room control’s user manual (special
functions, ‘CEnt’).
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3. Registering the room control
For convenient programming from an armchair, for example, remove the control centre from the wall holder or remove
the power supply plug.
• Briefly press the ‘
x
’ button once.
• Select ‘Sonderfkt.’ (special function) using the scroller.
FHT 8W Heat Demand Relay
Installation and User Guide
Product Code EHC-FH06
1
