Installation Instructions

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.