Vaillant VRC 470 User manual

Installation instructions
For the heating engineer
GB, IE
Installation instructions
VRC 470f

Table of contents
2Installation instructions VRC 470 0020116690_00
Table of contents
1 Notes on the installation instructions..............4
1.1 Observing other applicable documents ................4
1.2 Document storage ......................................................4
1.3 Symbols used...............................................................4
1.4 Applicability of the instructions..............................4
1.5 Glossary.........................................................................4
2 Safety............................................................................5
2.1 Safety and warning information .............................5
2.1.1 Classification of warnings.........................................5
2.1.2 Structure of warnings................................................5
2.2 Intended use ................................................................5
2.3 Basic safety instructions...........................................5
2.4 Requirements for cables...........................................6
2.5 Directives, laws and standards................................6
3 System description ..................................................7
3.1 System design.............................................................. 7
3.2 Operation...................................................................... 7
3.3 Unit design ...................................................................8
3.4 Identification plate .....................................................8
3.5 Accessories...................................................................8
4 Installation................................................................ 10
4.1 Check the scope of delivery................................... 10
4.2 Requirements for the installation site of
the unit........................................................................ 10
4.2.1 Controller.................................................................... 10
4.2.2 External sensor ......................................................... 10
4.3 Installing the controller in the boiler................... 10
4.4 Mounting the controller in the living room..........11
4.4.1 Removing the controller from the wall
mounting base.............................................................11
4.4.2 Secure the wall mounting base to the wall ..........11
4.5 Installing the external sensor .................................12
5 Electrical installation.............................................14
5.1 Connecting external sensor VRC 693...................14
5.2 Connecting external sensor VRC 9535................14
5.3 Connecting the controller installed in the
living room...................................................................15
6 Start-up.......................................................................16
6.1 Overview of Installation assistant
set-up options.............................................................16
6.2 Making settings for the operator...........................17
6.3 Setting other parameters of the heating
system ..........................................................................17
7 Operation ....................................................................18
7.1 Menu structure overview.........................................19
7.2 Installer level overview.............................................21
8 Functional description...........................................28
8.1 Service information..................................................28
8.1.1 Entering contact details..........................................28
8.1.2 Entering the service date .......................................28
8.2 System configuration: System...............................28
8.2.1 Reading the system status .....................................28
8.2.2 Reading the water pressure of the heating
system .........................................................................28
8.2.3 Reading the hot water production status...........28
8.2.4 Reading the collector temperature......................28
8.2.5 Setting the frost protection delay........................29
8.2.6 Setting the pump blocking time ...........................29
8.2.7 Setting the maximum pre-heating time..............29
8.2.8 Setting the maximum pre-switch-off time..........29
8.2.9 Setting the temperature threshold for
constant heating.......................................................29
8.2.10 Setting the raising temperature........................... 30
8.2.11 Reading the software version............................... 30
8.2.12 Configuring the heating circuit ............................ 30
8.3 System configuration: Heat generator:.............. 30
8.3.1 Reading the status of the heat generator......... 30
8.3.2 Reading the value of temperature sensor VF1. 30
8.3.3 Activating the low loss header ............................ 30
8.4 System configuration: HEATING 1 and, if
relevant, HEATING 2................................................ 30
8.4.1 Activating heating circuits ................................... 30
8.4.2 Reading the end of the current time period..... 30
8.4.3 Setting the room temperature ...............................31
8.4.4 Reading the current room temperature...............31
8.4.5 Setting the set-back temperature
(set-back temp.)..........................................................31
8.4.6 Reading the target flow temperature...................31
8.4.7 Reading the current flow temperature.................31
8.4.8 Reading the status of the heating circuit
pump.............................................................................31
8.4.9 Reading the status of the heating circuit
mixer.............................................................................31
8.4.10 Activating room temperature control .................31
8.4.11 Activating automatic summer time
recognition ..................................................................31
8.4.12 Setting the heating curve.......................................32
8.4.13 Setting the minimum flow temperature for
heating circuits..........................................................32
8.4.14 Setting the maximum flow temperature for
mixing circuit .............................................................32
8.4.15 Reading the status of special operating
modes ..........................................................................32
8.4.16 Specifying control modes outside time
periods.........................................................................32
8.5 System configuration: Domestic hot water........33
8.5.1 Setting the target temperature for domestic
hot water (desired hot water temperature) .......33
8.5.2 Reading the current temperature of the
domestic hot water cylinder ..................................33
8.5.3 Reading the status of the cylinder
charge pump..............................................................33
8.5.4 Reading the status of the circulation pump ......33
8.5.5 Defining the day for executing the anti-
Legionella function...................................................33

Table of contents
3
Installation instructions VRC 470 0020116690_00
8.5.6 Defining the time for executing the anti-
Legionella function...................................................33
8.5.7 Defining the offset for charging the
domestic hot water cylinder ..................................33
8.5.8 Defining the run-on time for the cylinder
charge pump..............................................................33
8.5.9 Activating parallel charging (domestic hot
water cylinder and mixing circuit)........................34
8.5.10 Setting the relay output for cylinder charge
pump and circulation pump ...................................34
8.6 System configuration: Solar...................................34
8.6.1 Reading the value of the cylinder sensor SP2 ..34
8.6.2 Reading the value of the solar gain sensor .......34
8.6.3 Reading the status of the solar pump.................34
8.6.4 Reading the value of the TD1 sensor ...................34
8.6.5 Reading the value of the TD2 sensor ..................34
8.6.6 Reading the status of the multi relay..................34
8.6.7 Reading the runtime of the solar pump..............35
8.6.8 Resetting the runtime measurement of
the solar pump ..........................................................35
8.6.9 Activating the solar pump on temperature
difference control .....................................................35
8.6.10 Defining the priority for charging the
domestic hot water cylinder ..................................35
8.6.11 Setting the flow volume of the solar circuit ......35
8.6.12 Defining the setting for multi relay......................35
8.6.13 Activating the solar pump kick..............................35
8.6.14 Setting the solar circuit protection......................35
8.6.15 Defining the maximum temperature for solar
cylinder........................................................................36
8.6.16 Defining the on temperature difference
value for solar charging..........................................36
8.6.17 Defining the off temperature difference
value for solar charging..........................................36
8.6.18 Defining the on temperature difference
value for second difference control.....................36
8.6.19 Defining the off temperature difference
value for second difference control.....................36
8.7 Selecting the expansion module for sensor/
actuator test ..............................................................37
8.8 Activating the screed drying function ................37
8.9 Changing the code for Installer level...................37
8.10 Operator level functions .........................................38
9 Handing over the unit to the owner.................39
10 Fault recognition and clearance........................ 40
10.1 Error messages ........................................................ 40
10.2 List of errors...............................................................41
10.3 Restore factory settings...........................................41
11 Warranty and customer service.........................42
12 Taking out of service .............................................43
12.1 Taking the controller out of service.....................43
12.2 Recycling and disposing of the controller..........43
12.2.1 Unit...............................................................................43
12.2.2 Packaging....................................................................43
13 Technical data......................................................... 44
13.1 Controller VRC 470................................................. 44
13.2 Sensor resistances .................................................. 44
14 Glossary .................................................................... 45
Index............................................................................47

Notes on the installation instructions
4Installation instructions VRC 470 0020116690_00
1
1 Notes on the installation
instructions
The following instructions are intended to guide you
throughout the entire documentation. Further docu-
ments apply in combination with these installation
instructions.
We accept no liability for damage caused by failure to
observe these instructions.
1.1 Observing other applicable documents
>Always observe all installation instructions for struc-
tural parts and components of the system when
installing the VRC 470 controller.
These installation instructions are enclosed with the var-
ious system components as well as additional compo-
nents.
>Also observe all the operating instructions included
with the system components.
1.2 Document storage
>Pass these installation instructions and all other appli-
cable documents and, if necessary, any required tools
to the system operator.
The system operator will store these so that they are
available when required.
1.3 Symbols used
The symbols used in the text are explained below: Sym-
bols for identifying dangers are also used in these oper-
ating instructions (¬Section2.1.1).
iSymbol that denotes useful tips and
information
>Symbol for a required action
1.4 Applicability of the instructions
These installation instructions are valid for units with
the following article numbers only:
Type designation Article number Countries
VRC 470 0020108130 GB
Tab. 1.1 Type designations and article numbers
The 10-digit article number can be found in the serial
number of your unit.
The serial number is displayed when you press the left
function key under "Information/Serial number". It is in
the second line of the display (¬ Operating instruc-
tions).
CE label
The CE label documents that, based on the type over-
view, the units comply with the basic requirements of
the following directives:
– Electromagnetic compatibility directive (Council Direc-
tive 2004/108/EC)
– Low voltage directive (Council Directive 2006/95/EC).
1.5 Glossary
Technical terms are explained in the Glossary at the end
of these operating instructions.

Safety
Installation instructions VRC 470 0020116690_00 5
2
2 Safety
2.1 Safety and warning information
>When installing the VRC 470, take account of the
basic safety instructions and the warning notes that
may appear before an action.
2.1.1 Classification of warnings
The warning notes are classified in accordance with the
severity of the possible danger using the following dan-
ger signs and signal words:
Danger sign Signal word Explanation
aDanger! Immediate risk of
death or
risk of severe personal
injury
eDanger! Risk of death from
electric shock
aWarning! Risk of minor personal
injury
bCaution! Risk of material or
environmental damage
Tab. 2.1 Meaning of danger signs and signal words
2.1.2 Structure of warnings
Warning signs are identified by an upper and lower sepa-
rating line and are laid out according to the following
basic principle:
aSignal word!
Type and source of danger!
Explanation of the type and source of danger.
>Measures for averting the danger.
2.2 Intended use
The Vaillant VRC 470 controller is a state-of-the-art
appliance constructed in accordance with recognised
safety regulations. Nevertheless, there is a risk of death
or serious injury to the operator or others or of damage
to the units and other property in the event of improper
use or use for which they are not intended.
The Vaillant VRC 470 controller controls a heating sys-
tem in a weather-compensated and time-dependent
manner. The controller is connected to a Vaillant boiler
with an eBUS interface.
Operation is permissible with the following components
and accessories:
– Domestic hot water cylinder (conventional)
– Vaillant stratified charge cylinder actoSTOR VIH RL
– Circulation pump for the hot water supply
– Second heating circuit
– Solar system
– Remote control unit
Any other use, or use beyond that specified, shall be
considered as improper use. Any direct commercial or
industrial use is also deemed to be improper. The manu-
facturer/supplier is not liable for any damage resulting
from improper use. In this case, the user alone bears the
liability.
It is also considered as intended use to observe:
– the operating and installation instructions
– all other applicable documents
– compliance with the care and maintenance conditions.
Improper use of any kind is prohibited!
2.3 Basic safety instructions
The controller may only be installed by a competent
person approved at the time by the Health and Safety
Executive.
>Read through these installation instructions carefully
>Carry out the activities that are described in these
installation instructions.
>During the installation, observe the following safety
instructions and regulations.

Safety
6Installation instructions VRC 470 0020116690_00
2
Protecting against Legionella
The controller is furnished with an anti-Legionella func-
tion to protect against infection by germs (Legionella).
When the function is activated, the water in the domes-
tic hot water cylinder is heated to over 60°C for at least
one hour.
>Set the anti-Legionella function when installing the
controller.
>Explain to the operator how the anti-Legionella func-
tion works.
Preventing the risk of scalding
There is a danger of scalding at the hot water draw-off
points if the temperatures are greater than 60°C. Young
children and elderly persons are particularly at risk,
even at lower temperatures.
>Select a moderate target temperature.
>Inform the owner about the risk of scalding when the
anti-Legionella function is switched on.
Protecting the controller from damage
>The controller should only be installed in dry rooms.
Preventing malfunction
>Ensure that the heating system is in a technically per-
fect condition.
>Ensure that no safety or monitoring devices have
been removed, bridged or disabled.
>Immediately rectify any faults and damage that may
negatively affect safety.
>Inform the operator that he must not cover the con-
troller with furniture, curtains or other objects.
>Inform the operator that the radiator valves in the
room where the controller is installed must be turned
fully open.
>If thermostatic control is activated, advise the opera-
tor that, in the room where the controller is mounted,
all the radiator valves must be fully open.
2.4 Requirements for cables
>Use standard commercial cables for wiring.
Minimum cross-section of the cable:
– Supply cable 230 V (pumps or mixer supply cable):
1.5mm2
– Low-voltage conductors(sensor or bus lines):
0.75mm2
Maximum cable length:
– Sensor lines: 50 m
– Bus lines: 300 m
>At lengths of over 10 m, 230V supply cables must be
laid separately from sensor or bus lines.
>Fasten the supply cables using the strain relief device
in the wall mount.
>Do not use the free terminals in the unit as supports
for other wiring.
>The controller should only be installed in dry rooms.
2.5 Directives, laws and standards
All wiring must be in accordance with Building Regula-
tions Part P and BS 7671 (IEE Wiring Regulations), and
must be carried out by a suitably qualified person.

System description
Installation instructions VRC 470 0020116690_00 7
3
3 System description
3.1 System design
The VRC 470 controller controls the Vaillant heating
system and hot water production.
You can mount the controller on a wall using the wall
mounting base or in the controller slot of a Vaillant
boiler, without the wall mounting base.
230 V~
12
45
3
Fig. 3.1 System drawing
Key
1 Controller VRC 470
2 External sensor VRC 693 or VRC 9535 (DCF77)
3 Boiler
4 Cable connection (VRC 693: 2-core; VRC 9535: 3-core)
5 eBUS connection (2-core)
3.2 Operation
Heating installation
The VRC 470 is a weather-compensated controller with
a separate sensor. The sensor mounted in the open air
measures the outside temperature and sends it to the
controller. The controller controls the flow temperature
of the heating as a function of the outside temperature.
If the outside temperature is low, the controller
increases the flow temperature, and if the outside tem-
perature is high, it reduces the flow temperature again.
Thus, the controller absorbs fluctuations in the outside
temperature and the room temperature remains at the
constant, preset temperature value.
Hot water production is not affected by the weather
compensation.
Data exchange and the power supply to the controller
are provided via an eBUS interface.
For remote diagnosis and remote settings, you can equip
the controller with the Vaillant diagnostic software
vrDIALOG 810/2 and with the Vaillant Internet communi-
cation system vrnetDIALOG.
Hot water production
With the VRT 470 you can also define the temperature
and time for hot water production. The boiler heats the
water in the domestic hot water cylinder to the preset
temperature. The times at which hot water should be
available in the cylinder, can be defined with the help of
time periods.
If a circulation pump is installed in the heating system,
time periods can also be set for circulation of the hot
water.

System description
8Installation instructions VRC 470 0020116690_00
3
3.3 Unit design
1
3
2
6
5
4
7
Fig. 3.2 Front view of VRC 470
1Display
2 Wall mounting base
3Diagnosis socket for the heating engineer
Wall mounting base cover
5 Right function key "Mode" (soft key function)
6 Control knob (no key function)
7 Left function key "Menu" (soft key function)
3.4 Identification plate
The identification plate is located on the rear side of the
controller electronics (PCB) and is no longer accessible
from the outside after the controller has been installed
in the boiler or after it has been wall-mounted in the
living area.
(21)092600200285150907011320N4
9 . . . 24V <50mA
VRC 470
1 2 3 4 5
Fig. 3.3 Identification plate (example)
Key
1 EAN code
2 Unit designation
3 Operating voltage
4 Current consumption
5 CE label
3.5 Accessories
i
If the controller is supplemented with acces-
sories, please note all relevant installation
instructions.
The following accessories can be used to expand control-
ler functionalities:
Multi-function module VR 40
The multi-function model VR 40 can be used by the con-
troller to control a circulation pump.
Mixer module VR 61/2
The mixer module VR 61/2 expands the controller to a
2-circuit controller.
Solar module VR 68/2
The solar module VR 68/2 can be used by the controller
to control a solar system.
Control Center VR 65
The Control Center VR 65 allows for the use of Vaillant
low voltage "eBUS" controllers with valves and domestic
hot water cylinders from the traditional 230 V range
in the English market.

System description
Installation instructions VRC 470 0020116690_00 9
3
Remote control unit VR 81/2
If the controller is installed in the boiler or if the second
heating circuit is to be influenced decentrally, you can
use the remote control unit VR 81/2. You can use the
remote control unit VR 81/2 to set the parameter "Room
temp. target".
In addition, the controller displays service and fault mes-
sages by means of symbols.
Data interchange is via eBus line.

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:
–VRC693
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
eDanger!
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.

Installation
Installation instructions VRC 470 0020116690_00 11
4
If there are horizontal plug connections without pins on
the control cabinet:
1
2
Fig. 4.1 Connecting the pin header
>Connect the 3-way pin header supplied with the con-
troller with the short ends in the 3 horizontal open-
ings on the controller PCB.
>Carefully push the controller with the pin header into
the plug connection of the control cabinet.
>If not already done, mount the external sensor
(¬Section4.5).
>Perform electrical installation of the external sensor
(¬Section5).
>Switch on the power supply to the boiler.
>Bring the boiler into operation.
>If necessary, close the front cover of the boiler again.
4.4 Mounting the controller in the living room
3
4
4
7
6
5
3
2
1
3
Fig. 4.2 Mounting the controller
1 Controller VRC 470
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
Before mounting the controller in the living room, you
must disconnect the controller from the wall mounting
base. You can then secure the wall mounting base to the
wall.
4.4.1 Removing the controller from the wall
mounting base
>Insert a screwdriver into the slot (7) on the wall
mounting base (2).
>Carefully lever the controller (1) out of the wall
mounting base (2).
4.4.2 Secure the wall mounting base to the wall
>Mark the position on the wall. Take the eBUS line
route into account when doing so.
>Drill two holes with 6 mm diameter in accordance
with the mounting holes (3).
>Insert the wall plugs supplied.
>Insert the eBUS cable through one of the cable open-
ing (4).

Installation
12 Installation instructions VRC 470 0020116690_00
4
>Use the screws supplied to secure the wall mounting
base.
>Connect the eBUS cable to the terminals of the pin
header (¬Section5.3).
Installing the controller
>Carefully insert the controller in the wall mounting
base. Take care to ensure that the pin header (5) on
the wall mounting base fits in the controller connec-
tor provided.
>Carefully press the controller into the wall mounting
base until the locking tabs on the controller are heard
to latch into the sides of the wall mounting base.
4.5 Installing the external sensor
bCaution!
Risk of material damage if fitted incor-
rectly!
Incorrect fitting can cause damage to the unit
and the wall of the building, e.g. from damp-
ness.
>Observe the cable routing described and
the correct installation position of the
external sensor.
iInstallation is the same for both external sen-
sors, with the following exceptions:
– the VRC 693 requires a 2-core
connection cable
– the VRC 9535 requires a 3-core
connection cable
5
4
2
3
1
2
3
Fig. 4.3 Fitting the external sensor VRC 693
1 Mounting holes
2 Cap nut for cable entry point
3 Connection cable with drip loop
4 Wall mounting base
5 Housing cover

Installation
Installation instructions VRC 470 0020116690_00 13
4
2
4
5
3
1
2
3
Fig. 4.4 Fitting the external sensor VRC 9535
1 Mounting holes
2 Cap nut for cable entry point
3 Connection cable with drip loop
4 Wall mounting base
5 Housing cover
Install the external sensor as follows:
>Mark the position on the wall. Observe the cable rout-
ing for the external sensor.
>Route the connection cable (3) on-site with a slight
incline to the outside and with a loop to catch drips.
>Remove the casing cover (5) from the external sensor.
>Drill two holes with 6 mm diameter in accordance
with the mounting holes (1).
>Insert the wall plugs supplied.
>Fix the wall mounting base (4) to the wall with two
screws. The cable entry must point downwards.
>Unfasten the cap nut (2) slightly and push the con-
necting cable through the cable entry from below.
>Connect the external sensor as described in
Section5.1 for the VRC 693, or as described in
Section5.2 for the VRC 9535.
>Retighten the cap nut (2). The packing in the cable
entry adapts to the diameter of the cable used (Cable
diameter: 4.5 mm to 10mm).
>Place the gasket between the wall mounting base and
the housing cover.
>Push the housing cover onto the wall mounting base
until it clicks in position.

Electrical installation
14 Installation instructions VRC 470 0020116690_00
5
5 Electrical installation
eDanger!
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.
5.1 Connecting external sensor VRC 693
>Disconnect the power supply to the boiler.
>Secure the power supply to the boiler against being
switched on again.
1
2
Fig. 5.1 Connecting external sensor VRC 693
1 Connection cable to the external sensor VRC 693
2 6-way edge connector for plug location X41 (boiler)
Connect external sensor VRC 693 to the boiler as
follows:
>Connect the connection cable to the terminals of the
external sensor (1).
>Connect the connection cable to the 6-way edge con-
nector (2).
>Guide the connection cable with the edge connector
into the control cabinet of the boiler.
>Connect the 6-way edge connector (2) to slot X41 of
the PCB of the control cabinet.
5.2 Connecting external sensor VRC 9535
>Disconnect the power supply to the boiler.
>Secure the power supply to the boiler against being
switched on again.
1
2
Fig. 5.2 Connecting external sensor VRC 9535
1 Terminal rail VRC 9535 external connector
2 6-way edge connector for plug location X41 (boiler)
Connect external sensor VRC 9535 to the boiler as
follows:
>Connect the connection cable to the terminal strip of
the external sensor (1).
>Connect the connection cable to the 6-way edge con-
nector (2).
>Guide the connection cable with the edge connector
into the control cabinet of the boiler.
>Connect the 6-way edge connector (2) to slot X41 of
the PCB of the control cabinet.

Electrical installation
Installation instructions VRC 470 0020116690_00 15
5
5.3 Connecting the controller installed in the
living room
bCaution!
Malfunctions caused by incorrect installa-
tion!
Without a bridge between terminals 3 and 4
on the PCB in the control cabinet, the boiler
cannot work.
>When connecting the controller, ensure
that the bridge between terminals 3 and 4
is installed.
>Disconnect the power supply to the boiler.
>Secure the power supply to the boiler against being
switched on again.
1
2
Fig. 5.3 Connecting the controller
Key
1 VRC 470
2 Boiler terminal strip
iWhen connecting the eBUS line, there is no
need pay attention to the polarity. If the two
connections are switched over, communica-
tion is not affected.
Connect the controller to the boiler as follows:
>Connect the eBUS line to the terminals (1) of the pin
header in the wall mounting base of the controller.
>Connect the eBUS line to the terminal strip of the
boiler (2).

Start-up
16 Installation instructions VRC 470 0020116690_00
6
6 Start-up
When you start the controller for the first time after
electrical installation or after replacement, the Installa-
tion assistant starts automatically. Using this Installation
assistant, you can create the main settings for the heat-
ing system.
The operating concept, operating example and menu
structure are described in the operating instructions of
the controller (¬Operating instructions).
All settings that you have made via the Installation
assistant, can be changed again at a later time via the
“Installer level“ operating level.
The reading and setting options of the Installer level are
described in (¬Section7) and (¬Section8).
6.1 Overview of Installation assistant
set-up options
Setting Values Unit Step size, select Factory
reset Own setting
min. max.
Language – – – Languages available for selection German
Heating circuit 1 Generator circuit, inactive Generator
circuit
Heating circuit 22) Zone, mixing circuit, inactive Mixing
circuit
LP/ZP relay connection2) Cylinder charge pump, circulation pump,
not connected Not con- nected
Solar flow volume1) 0.0 99.5 l/min 0.5 17.5
Multi relay1) Difference control, 2nd cylinder Difference
control
Solar pump kick1) OFF, ON Off
Solar circuit prot.1) Off, 110 150 °C 1 150
Installation country2) Country available for selection Germany
Heating circuit conf.3) HEATING 1, HEATING 2,
HEATING 1 & HEATING 2 HEATING 1
Low loss header4) On, Off Off
Cylinder active, inactive active
Tab. 6.1 Overview of Installation assistant set-up options
1) Appears only if solar module VR 68/2 is connected.
2) Appears only if solar station VMS is connected.
3) Appears only if mixing module VR 61/2 is connected.
4) Appears only if cylinder actoSTOR VIH RL is connected.

Start-up
Installation instructions VRC 470 0020116690_00 17
6
6.2 Making settings for the operator
Make the following settings for the operator via the
Operating level:
>If no DCF77 receiver is installed, set the date and
time.
>If necessary, change the factory-set designations of
the components in the heating system.
>Set the mode for the heating function. The mode for
hot water production is dependent on this and cannot
be set separately.
>Set the target room temperature ("Desired day tem-
perature").
>Set the set-back temperature ("Desired night temper-
ature").
>Set the hot water temperature ("Desired hot water
temperature").
>Set the period for automatic mode of the heating
function.
>Set the period for hot water production.
>If relevant, set the period for circulation.
6.3 Setting other parameters of the heating
system
You can set other parameters via the "Installer" operat-
ing level, (¬Section7) and (¬Section8).

Operation
18 Installation instructions VRC 470 0020116690_00
7
7 Operation
The menu structure, operating concept and operating
example are described in the operating instructions for
the controller (¬ Operating instructions).
The controller has two operating levels, the Operator
level and the Installer level.
The reading and set-up options in Operator level are also
described in the operating instructions.
Below, you can find the reading and set-up options which
can be accessed via the left function key "Menu" and list
entry "Installer level".
iSeveral consecutive displays indicate possible
additional heating circuits. Menu entries
shown in grey are only available if a corre-
sponding expansion module is connected.

Operation
Installation instructions VRC 470 0020116690_00 19
7
7.1 Menu structure overview
Back Change
Back
Back
Back
Change
Back
Back
Enter code
000
Back Ok
Menu
Day at home scheduling
Basic settings
Installer level
Back Select
Installer level
Service information
System configuration
Sensor/ actuator test
Back Select
Service information
Enter contact details
Service date
Back Select
Service information
Enter contact details
Service date
Back Select
Installer level
Service information
System configuration
Sensor/ actuator test
Back Select
System
Status
Water pressure
Domestic hot water
Back
OK
2,3bar
Charged
System
Collector temp
Frost protect. delay
Pump Blocking Time
Back
76°C
4 h
15 min
System
Max. pre-heat
Max. pre-switch-off
OT constant heating
Back Change
0 min
0 min0 min
Off
40°C
System
Raising temperature
Control modules
Heating circuit conf.
Back
0 K
List
Ht crt. 1
Heat Generator
Heat Generator---------------------------
Status
VF1
Back
Off
Off
Off
Domestic hot water
Cyl. temp. current
Cylinder charge pump
Circulation pump
Back
59°C
Active
Heat Generator
HEATING 1---------------------------------HEATING 1---------------------------------
Circuit type
Back
Off
Change
Low loss header
60°C
Domestic hot water
Domestic hot water-----------------------
Cylinder
Cylinder temp. target.
Back
Active
20,0°C
20,0°C
HEATING 1
Auto day temp until
Room temp. target
Room temp. currant
Back
22:10
0°C
22°C
HEATING 1
Set-back temp.
Flow temp. target
Flow temp. current
Back
15,0°C
None
1K
HEATING 1
Pump status
Room temp control
Summer mode offset
Back
Off
Change
Change
Change
15°C
Eco
HEATING 1
Heat curve
Min. temperature
System off mode
Back
1,2
Active
HEATING 1
Advanced functions
HEATING 2-----------------------------------HEATING 2
Circuit type
Back
None
Change
4:00
25K
Domestic hot water
Anti-legionella day
Anti-legionella time
Cylinder boost offset
Back
Off
Change
Off
no connect.
Domestic hot water
Load pump
Paral. cyl. charge
LP/ZP relay connection
Back
5 min
Change
Fig. 7.1 Installer level menu structure Part 1

Operation
20 Installation instructions VRC 470 0020116690_00
7
Back Change
Back
Change
Back
Enter code
000
Back Ok
Menu
Day at home scheduling
Basic settings
Installer level
Back Select
Installer level
Service information
System configuration
Sensor/ actuator test
Back Select
Solar
Sensor cylinder 2
Sensor solar gain
Back
Installer level
Service information
System configuration
Sensor/ actuator test
Back Select
VR 61
Actuator
Sensor
Back Select
Installer level
Screed drying function
Change code
-------------------------------------------------
Back Select
Installer level
Screed drying function
Change code
Back Select
Solar------------------------------------------
-------------------------------------------------
20°C
10°C
Solar
Status solar pump
Sensor TD1
Sensor TD2
Back
On
64°C
54°C
Solar
Status multi relay
Solar pump runtime
Reset solar runtime
Back
Change
On
1963h1963h
No
130°C
Solar
Pump control
Lead cylinder
Solar flow voume
Back
Off
1
165l/min
LP/ZP
VF2
65°C
VR 68
Actuator
Sensor
Back Select
MA
KOL1
76°C
actoSTOR
Actuator
Sensor
Back Select
ZP
T1
55°C
Screed drying functionScreed drying function
HEATING 1 Day
Temperature
Back Change
00
0,0°C
Change codeChange code
New code
Back Change
000
Solar
Solar pump kick
Solar circuit prot.
Back
Off
Change
65°C
Solar cylinder 1
Off temp. diff.
Max. temperature
Back
3K
Multi relay diff. ctrl
Solar cylinder 1
Max. temperature
On temp. diff.
Back
Solar cylinder 1----------------------------
Solar cylinder 2----------------------------
65°C
7K
2nd Difference control
On temp. diff.
Off temp. diff.
Back
2nd Difference control----------------------2nd Difference control----------------------
7K
3K
Fig. 7.2 Installer level menu structure Part 2