Installation Instructions

Installation
10 Installation instructions VRC 470f 0020124645_00
4
> If necessary, open the front cover on the boiler.
> Carefully lever the blind cover from the control cabi-
net.
> Carefully lever the radio receiver unit from the wall-
mounting base (¬Section4.4.1).
> Check which type of switch box the boiler has:.
1
2
Fig.4.1 Plugging in/removing pin header connector
If there are vertical plug connections with pins:
> If the 3-pin pin header connector (2) is pre-fitted on
the PCB (1) of the radio receiver unit, then remove it.
> Carefully press the radio receiver unit into the con-
nection in the switch box.
If there are horizontal plug connections without pins on
the control cabinet:
> If the 3-pin pin header connector (2) is not pre-fitted,
plug the short pins of the 3-pin pin header connector
supplied with the controller into the horizontal row of
3holes on the PCB (1) of the radio receiver unit.
> Carefully press the radio receiver unit with the pin
header connector into the connection in the switch
box.
> If you have not already done so, install the outside
temperature sensor/transmitter (¬Section4.5).
> Switch on the power supply to the boiler.
> Bring the boiler into operation.
> If necessary, close the front cover of the boiler.
4.4 Wall-mounting the radio receiver unit
i
Wall-mounting the radio receiver unit is only
necessary if its position needs to be optimised
after start-up in order to ensure good radio
communication with the controller and the
outside temperature sensor/transmitter.
3
4
4
7
6
5
3
2
1
3
Fig.4.2 Mounting the radio receiver unit
1 Radio receiver unit
2 Wall-mounting base
3 Mounting holes
4 Openings for cable entry
5 Pin header with terminals for the eBUS cable
6 Wall-mounting base cover
7 Slot for screwdriver
4.4.1 Removing the radio receiver unit from the
wall-mounting base
> Insert a screwdriver into the slot (7) on the wall-
mounting base (2).
> Carefully lever the radio receiver unit (1) off the wall-
mounting base (2).