Vaillant VRC 470 Installation Instructions Manual - page 10
Installation
10
Installation instructions VRC 470 0020116690_00
4
4 Installation
You can either integrate the controller within the boiler
or install it separately on a wall in the living area. In the
case of wall mounting, you connect the controller to the
boiler via a 2-core eBUS line.
4.1
Check the scope of delivery
Quantity Component
1
Controller VRC 470
1
VRC 9535 external sensor
1
VRC 693 external sensor
1
Fastening material (2 screws and 2 wall plugs)
1
6-way edge connector
1
Operating instructions
1
Installation instructions
Tab. 4.1 Scope of delivery
The controller is supplied with one of the following
external sensors:
– VRC 693
connection to the boiler is via a 2-core cable,
– VRC 9535 (DCF77)
connection to the boiler is via a 3-core cable.
4.2
Requirements for the installation site of the
unit
4.2.1 Controller
> If you mount the controller on a wall, position it so
that correct measurement of the room temperature is
assured; 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.
4.2.2 External
sensor
The installation location of the external sensor 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
> On building with up to three floors, install the external
sensor (¬ Section 4.5) at 2/3 of the total wall height,
and on buildings with more than three floors, install it
between the 2nd and 3rd floors.
4.3
Installing the controller 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 power
mains 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 controller in the control cabi-
net of the boiler, follow the controller installa-
tion instructions in the installation instruc-
tions for the boiler.
Install the controller in the boiler as follows:
> Switch off the boiler.
> Ensure that the boiler is disconnected from the power
source.
> If necessary, open the front cover on the boiler.
> Carefully lever the blind cover off the control cabinet.
> Carefully lever the controller off the wall mounting
base (¬ Section 4.4.1).
> Check the control cabinet type:
If there are vertical plug connections with pins:
> Carefully push the controller into the plug connection
of the control cabinet.