FBR 1, FBR 2 · Edition 07.10 5
3 Functioning
FBR 2
Merlin
Lago E8,
Lago 0321,
Lago 0101/1001
FBR 1
K1
E25
E8
E8
Lago E8
triple-core connecting lead
selector switch
rotary knob
selector switch
rotary knob
triple-core connecting lead
The selector switch on the FBR can be used to select the follow-
ing operating modes on a heating controller for one heating
circuit respectively:
– night mode with setback temperature,
– day mode with comfort temperature,
– automatic mode according to time program.
When the FBR 2 is in automatic mode it also provides the
option to select two time programs and summer mode with
hot water preparation while the heating circuit is switched off.
The room sensor integrated in the FBR measures the room
temperature. The rotary knob can be used to adjust the desired
room temperature within a ±5 °C range. The correspond-
ing selector switch or rotary knob positions, as well as the
measured room temperature, are transmitted to the heating
controller via a triple-core connecting lead.
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