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Vaillant VRC 470F Manual

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Installation
Installation instructions VRC 470f 0020124645_00 9
4
4 Installation
You can either integrate the radio receiver unit in the
boiler or install it separately on a wall. If you are wall-
mounting the radio receiver unit, you connect it to the
boiler via a 2-core eBUS cable.
You can fix the controller to a wall in the living area.
4.1 Checking the delivery
Quantity Component
1 VRC 470f controller
1 Radio receiver unit
1 VR 21 outside temperature sensor/transmitter
1 Wall-mounting base for radio receiver unit
1 Wall-mounting base for VRC 470f
2 Fastening material (2 screws and 2 wall plugs)
1 Battery set (4 x AA)
1 3-pin pin header connector
1 Operating instructions
1 Installation instructions
Tab. 4.1 Scope of delivery
4.2 Requirements for the installation site
4.2.1 Radio receiver unit
> Install the radio receiver unit in the boiler.
> If radio communication cannot be established when
the radio receiver unit is installed in the boiler, then
install it in a suitable position on a wall.
4.2.2 Controller
> Position the controller so that proper detection of the
room temperature is possible; e.g. on an internal wall
of the main living room, at a height of approx. 1.5 m
> If room temperature control is activated, advise the
operator that, in the room where the controller is
mounted, all the radiator valves must be fully open.
4.2.3 Outside temperature sensor/transmitter
The installation site of the outside temperature sensor/
transmitter should be:
– not fully protected from wind
– not particularly draughty
– not in direct sunlight
– not affected by heat sources
– on a north or north-west facing wall
– easily accessible so that the solar cell can easily be
cleaned
– a short distance from the radio receiver unit
> During start-up, check whether radio communication
between the outside temperature sensor/transmitter
and the radio receiver unit can be established.
> If radio communication is adversely affected by elec-
trical equipment or buildings, then choose a different
installation site for the outside temperature sensor/
transmitter.
4.3 Fitting the radio receiver unit in the boiler
e
Danger!
Risk of death from live connections!
When working in the control cabinet of the
boiler there is a risk of death from electric
shock. Continuous voltage is present on the
mains connection terminals, even if the main
switch is turned off!
> Switch the main switch off before working
on the control cabinet of the boiler.
> Disconnect the boiler from the mains
power by disconnecting the mains plug or
by de-energising the boiler via an isolating
device with a contact opening of at least
3mm (e. g. fuses or power switches).
> Secure the power supply against being
switched on again.
> Open the control cabinet only when the
appliance is disconnected from the power
source.
i
When fitting the radio receiver unit in the
boiler's switch box, follow the instructions for
fitting a controller given in the boiler installa-
tion instructions.
Install the radio receiver unit in the boiler as follows:
> Switch off the boiler.
> Ensure that the boiler is disconnected from the power
source.
… 9 …


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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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