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Vaillant VRC 470F Manual

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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).
… 10 …


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  • How can one test if a VR20 outside temp. sensor is working? If pressing the Red button on the rear of the module does not activate the flashing green light. is this an indication of faulty unit? The lens is clean. Solar sensor charging at around 2.1 volts. Battery is at 3volts. Submitted on 29-12-2021 at 16:45

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