Vaillant VRC 470 User manual

For the operator
Instructions for use
VRC 470
Weather compensator
GB, IE
Instructions for use

Legal information
Document type: Instructions for use
Product: VRC 470
Target group: Operator
Language: EN
Document number_version: 0020116689_01
Created on: 11.10.2012
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Telefon [phone]‑0 Telefax [phone]‑28 10
[email protected] www.vaillant.de
© Vaillant GmbH 2012
These instructions, or extracts thereof, may only be printed with the written consent of Vaillant GmbH.
All designations of products in these instructions are brand names/trade marks of the companies in question.
We reserve the right to make technical changes.

Contents
0020116689_01 VRC 470 Instructions for use 3
Contents
1 Notes on the documentation .............................. 4
1.1 Observing other applicable documents ................. 4
1.2 Document storage ................................................. 4
1.3 Applicability of the instructions .............................. 4
1.4 Nomenclature ........................................................ 4
2 Safety .................................................................... 5
2.1 Action-related warnings ......................................... 5
2.2 Required personnel qualifications ......................... 5
2.3 General safety information .................................... 5
2.4 CE label ................................................................. 6
2.5 Intended use .......................................................... 6
3 Overview of the equipment................................. 7
3.1 Unit design............................................................. 7
3.2 Identification plate.................................................. 7
3.3 Serial number ........................................................ 7
3.4 Control function...................................................... 7
3.5 Frost protection function ........................................ 8
4 Operating.............................................................. 8
4.1 Operating structure................................................ 8
4.2 Operating concept ................................................. 9
4.3 Overview of setting and read-out options ............ 11
5 Operating and display functions...................... 11
5.1 Information........................................................... 11
5.2 Settings................................................................ 13
5.3 Operating modes ................................................. 18
5.4 Advanced functions ............................................. 20
5.5 Messages ............................................................ 21
6 Service and troubleshooting ............................ 22
6.1 Cleaning the controller......................................... 22
6.2 Detecting and rectifying faults ............................. 22
7 Decommissioning.............................................. 22
7.1 Replacing the controller....................................... 22
7.2 Recycling and disposal........................................ 22
8 Guarantee and customer service..................... 22
8.1 Guarantee............................................................ 22
8.2 Customer service................................................. 22
9 Technical data.................................................... 22
9.1 Controller ............................................................. 22
9.2 Sensor resistances .............................................. 22
Appendix ............................................................................ 23
A Operating modes ............................................... 23
B Overview of operating levels............................ 23
Index ................................................................................... 29

1 Notes on the documentation
4Instructions for use VRC 470 0020116689_01
1 Notes on the documentation
1.1 Observing other applicable documents
▶You must observe all instructions for use that are en-
closed with other components of your system.
1.2 Document storage
▶Store the enclosed operating instructions and all other
applicable documents in such a way that they are avail-
able whenever required and for any subsequent operat-
ors of the system.
1.3 Applicability of the instructions
These instructions apply for the following products only:
VRC 470/3 and VRC 470/4 article number
Great Britain 0020108130
1.4 Nomenclature
The term "heat pump" is used if there is no difference
between the heat pumps.
The term "hybrid heat pump" is used when the
VWS 36/4 230 V or VWL 35/4 S 230 V heat pump is meant.
The term "monoblock heat pump" is used when
the VWL 85/2 A 230 V,VWL 115/2 A 230 V, or
VWL 115/2 A 400 V heat pump is meant.

Safety 2
0020116689_01 VRC 470 Instructions for use 5
2 Safety
2.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in accordance
with the severity of the possible danger using the following
warning signs and signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of severe personal
injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental damage
2.2 Required personnel qualifications
These instructions are aimed at those who are able to oper-
ate a heating installation but do not have any special tech-
nical knowledge or experience.
2.2.1 Instructed operator (Operator)
Definition:
Instructed
operator
The operator is charged with operation and
maintenance of the unit. He/she must ensure
compliance with maintenance intervals. He/she
does not require any special technical know-
ledge or experience.
The operator must have been instructed in
the following topics by the authorised skilled
tradesman.
–General safety information
–Function and location of safety devices on
the system
–Operation of the unit
–Energy-saving operation
–Maintenance operations
2.3 General safety information
2.3.1 Installation only by a skilled tradesman
Installation of the unit can be only carried out by an ap-
proved, skilled tradesman. This skilled tradesman is also
responsible for proper installation and start-up.
2.3.2 Risk of death from contaminated drinking
water
The controller is equipped with an Anti-legionella function
to protect against infection by germs (Legionella). When
this Anti-legionella function is activated, the water in the do-
mestic hot water cylinder is heated to over 60 °C for at least
an hour. The skilled tradesman activates the Anti-legionella
function on installation of the controller.
▶Ask the skilled tradesman if he has activated the Anti-
legionella function.
▶Ask the skilled tradesman to explain how the Anti-legion-
ella function works.
2.3.3 Risk of scalding from hot drinking water
There is a risk of scalding at the hot water draw-off points
if the set target temperature is greater than 60 °C. Young
children and elderly persons are particularly at risk, even at
lower temperatures.
▶Select a moderate set target temperature.
If the Anti-legionella function is activated, discuss with your
competent person:
–when the anti-legionella function starts,
–when the hot water is cooled back down to the set target
temperature,
–whether a mixer valve is incorporated in your heating
installation as protection against scalding,
–what do you have to do to avoid scalding.
2.3.4 Danger caused by a malfunction
▶Ensure that air can circulate freely around the controller,
and that the controller is not covered by furniture, cur-
tains or other objects.
▶Ensure that all radiator valves in the room where the con-
troller is fitted are fully open.
▶Only operate the heating installation when it is in a tech-
nically perfect condition.
▶Ensure that any faults and damage that may negatively
affect safety are rectified immediately.
2.3.5 Frost damage caused by switching the
appliance off
If you switch off the heating installation, parts of the heating
installation may be damaged by frost.
▶Do not disconnect the heat generator from the mains
power.
▶Leave the heating installation main switch in the "1" posi-
tion.

2 Safety
6Instructions for use VRC 470 0020116689_01
2.3.6 Frost damage caused by excessively low
room temperature
If the room temperature is set too low in individual rooms,
sections of the heating installation might be damaged by
frost.
▶If you are absent during a frosty spell, ensure that the
heating installation remains in operation and the rooms
are warmed adequately.
▶Please note the frost protection function.
2.3.7 Moisture and mould damage due to
inadequate exchange of air
In heavily insulated rooms that only allow a small exchange
of air, moisture and mould damage may occur.
▶Ventilate the rooms regularly by opening windows and
activate the 1 x ventilation boost function once to save
energy.
If a ventilation unit is connected (applies for controller ver-
sion VRC 470/4):
▶Do not disconnect the ventilation unit from the power
mains.
▶Clean and service the ventilation unit. The instructions for
cleaning and maintenance can be found in the ventilation
unit manual.
2.4 CE label
The CE label shows that the products comply with
the basic requirements of the applicable directives as stated
on the identification plate.
2.5 Intended use
State-of-the-art
The controller is a state-of-the-art unit manufactured in ac-
cordance with recognised safety regulations.
Even so, in the event of inappropriate or non-intended use,
damage to the appliance and other property may arise.
The controller controls a heating system with a Vaillant boiler
with eBUS interface in a way that is weather-controlled and
time-dependent.
The controller can control the hot water generation from a
connected DHW cylinder.
If a circulation pump is connected, the controller can also
control the hot water supply and circulation.
The controller can control a connected ventilation unit with
an eBUS interface on a time-dependent basis.
Improper use
Any other use that is not specified in these instructions,
or use beyond that specified in this document shall be
considered improper use. Any direct commercial or
industrial use is also deemed to be improper. The manufac-
turer/supplier is not liable for any claims or damage resulting
from improper use. The user alone bears the risk.
Any improper use is prohibited.
Other applicable documents
Intended use includes the following:
–observance of accompanying operating, installation and
servicing instructions for the Vaillant product as well as
for other parts and components of the system
–compliance with all inspection and maintenance condi-
tions listed in the instructions.

Overview of the equipment 3
0020116689_01 VRC 470 Instructions for use 7
3 Overview of the equipment
3.1 Unit design
1
3
2
6
5
4
7
1 Display
2 Wall-mounting base
3 Diagnostics socket
4 Wall base strip
5 Right-hand selection
button
6 Rotary knob
7 Left-hand selection button
3.2 Identification plate
The identification plate is located inside the controller and is
not accessible from the outside.
3.3 Serial number
The 10-digit article number can be found in the serial num-
ber. You can view the serial number under Menu →Inform-
ation Serial number. The article number is found in the
second line of the serial number.
3.4 Control function
The controller controls the Vaillant heating installation, the
connected ventilation unit and hot water generation of a con-
nected domestic hot water cylinder.
If the controller is installed in a living room, you can operate
the heating system, connected ventilation unit and hot water
generation from a living room.
3.4.1 Heating installation
3.4.1.1 Heating
You can use the controller to set the desired temperature for
different times of the day and for different days of the week.
The controller is a weather compensator with a temperature
sensor fitted in the open air. The temperature sensor meas-
ures the outside temperature and sends the values to the
controller. When the outside temperature is low, the control-
ler increases the flow temperature of the Vaillant heating in-
stallation. When the outside temperature rises, the controller
reduces the flow temperature. Thus, the controller reacts to
fluctuations in the outside temperature and, via the flow tem-
perature, keeps the room temperature constantly at the set
desired temperature.
3.4.1.2 Cooling
The room temperature sensor measures the room temper-
ature and forwards the data on to the controller. If the room
temperature is higher than the desired temperature that is
set, the controller reduces the flow temperature.
3.4.1.3 Ventilation
Applies to: Controller version VRC 470/4
If a ventilation unit is connected, the controller supports the
ventilation function.
You can use the controller to set the desired ventilation level
and time for the ventilation.
3.4.1.4 VR 61/4 mixer module
If a VR 61/4 mixer module is connected, the controller can
control two heating circuits:
–two heating circuits independently of each other, e.g.
HEATING 1 in a single-occupancy house and HEATING
2in a guest apartment in this house.
–two heating circuits dependent on each other in a dwell-
ing, e.g. HEATING 1 for radiators and HEATING 2 for
underfloor heating.
3.4.1.5 Hybrid manager
If you have connected a heat pump, the hybrid manager
attempts to cover the declared energy requirement under
the considerations of the cost optimisation and the technical
conditions.
The price-oriented hybrid manager picks the heat generator
on the basis of the rates set in relation to the energy require-
ment.
The bivalence point hybrid manager picks the heat generator
on the basis of the outside temperature.
If the system declares an energy requirement, the hybrid
manager switches on and forwards the energy requirement
to the heat generator. The hybrid manager determines which
heat generator it activates.

4 Operating
8Instructions for use VRC 470 0020116689_01
3.4.2 Hot water generation
You can use the controller to set the temperature and time
for the hot water generation. The heat generator heats the
water in the domestic hot water cylinder until it reaches the
set temperature. You can set a time period during which hot
water should be available in the domestic hot water cylinder.
3.4.3 Circulation
If a circulation pump is installed in the heating installation,
you can set a period for circulation. During the set period, hot
water circulates from the domestic hot water cylinder to the
water taps and back to the domestic hot water cylinder. If, for
example, you turn on a water tap during this time, hot water
will come out of the tap immediately.
3.5 Frost protection function
The frost protection function protects the heating system and
apartment from frost damage. The frost protection function
monitors the outside temperature.
If the outside temperature
–falls below 3 °C, the controller switches the heater on
after a frost protection delay time, and brings the target
room temperature to 5 °C.
–rises above 4 °C, the controller does not switch the
heater on but monitors the outside temperature.
Note
Your competent person will set the frost protection
delay time during the installation.
3.5.1 Enhanced frost protection function
If the heat pump is connected and you have activated the
Cooling operating mode, the additional enhanced frost pro-
tection function is also available.
–If the outside temperature falls below 4 °C for longer than
10 minutes, the controller switches off the Cooling oper-
ating mode.
4 Operating
4.1 Operating structure
4.1.1 Access level for the operator
Through the access level for the operator, you access im-
portant information and set-up options which do not require
any special prior knowledge. Via a menu structure, you can
access configurable or read-only values.
4.1.2 Access level for the skilled tradesman
The skilled tradesman will set further values for the heating
installation via the access level for the skilled tradesman.
The settings may only be made by someone with specialist
knowledge; this level is therefore code-protected.
4.1.3 Menu structure design
The menu structure of the controller is split into four levels.
There are three selection levels and one setting level. From
the basic display, you access selection level 1 and, from
there, you can access the menu structure for one level up or
down. The setting level is accessed from the lowest selection
level.
4.1.4 Basic display
Auto 5,0°C
°C
19,5
15:34
Desired heating temp. 20,0°C
Menu Op. mode
1
3
4
5
9
8
6
7
2
1 Symbol for the current
outside temperature
2 Current outside temperat-
ure
3 Current room temperature
4 Time
5 Current function of the
right-hand selection button
6 Current function of the left-
hand selection button
7 Desired setting (e.g. de-
sired heating temp.)
8 Symbol for Auto operating
mode
9 Operating mode set
The basic display shows the current settings and values of
the heating installation. If you make a setting on the control-
ler, the display on the screen switches from the basic display
to the display with the new setting.
The basic display appears when you:
–press the left-hand selection button and thus exit selec-
tion level 1.
–do not operate the controller for more than 5 minutes.
The basic display shows the key displays heating, cooling
and ventilation and the corresponding operating modes as
well as the status of the time period.
If your heating installation has two independent heating cir-
cuits, the competent person will determine during installation
whether or not the basic display shows the values of HEAT-
ING 1 or HEATING 2.

Operating 4
0020116689_01 VRC 470 Instructions for use 9
4.1.4.1 Symbols for Auto mode
Symbol Meaning
Comfort mode: Within a set time period
Set-back mode: Outside a set time period
4.1.4.2 Soft key function
Both selection buttons have a soft key function. The current
functions of the selection buttons are displayed in the bottom
display line. Depending on the selection level selected in the
menu structure, the list entry or the value, the current func-
tion for the left and right selection buttons may be different.
If, for instance, you press the left-hand function key, the cur-
rent function of the left function key switches from Menu to
Back.
4.1.4.3 Menu
If you press the left-hand selector button, Menu, you switch
from the basic display to selection level 1 of the menu struc-
ture.
4.1.4.4 Operating mode
If you press the right-hand selection button, Operating
mode, you access the settings directly from the basic display
under Operating mode.
4.1.4.5 Desired setting
Depending on the basic setting selected, a different display
text appears, e.g.:
–For the Heating basic setting, Desired Heating temp
appears
–For the Cooling basic setting, Desired Cooling temp
appears
–For the Ventilation basic setting, the ventilation level
appears
–Depending on the operating mode selected, no display
text appears
4.1.5 Selection level
Menu
Information
Desired temperatures
Time programmes
Back Select
1
4
3
2
1 Scroll bar
2 Current functions of the
right and left selection
buttons
3 Selection level list entries
4 Current function or selec-
tion level
Through the selection levels, you navigate to the setting level
in which you wish to read or change settings.
4.1.6 Setting level
HEATING 1
Day
Day Cooling
Back Change
20,0°C
26,0°C
Set-back 15,0°C
1
3
2
5
4
1 Current selection level
2 Values
3 Selection (current selec-
tion)
4 Current functions of the
right and left selection
buttons
5 Setting level
In the setting level, you can select the values you wish to
read or change.
4.2 Operating concept
The controller is operated using two selection buttons and a
rotary knob.
The display shows a highlighted selection level, a setting
level or a highlighted value with white font on a black back-
ground. A flashing, highlighted value means that you can
change the value.
If you do not operate the controller during a period of more
than 5 minutes, the basic display appears again.
4.2.1 Example: Operation in the basic display
From the basic display, you can change the Desired day
temperature directly for the current day by turning the rotary
knob.

4 Operating
10 Instructions for use VRC 470 0020116689_01
Desired day temperature
Only today: 18°C
For permanent change
Press OK
OK
In the display, a request appears asking if you want to
change the Desired day temperature for the current day or
on a permanent basis.
4.2.1.1 To change the Desired day temperature for
the current day only
▶Turn the rotary knob to set the desired temperature.
◁The display switches back to the basic display after
12 seconds. The set desired temperature applies only
until the end of the active time period of the current
day.
4.2.1.2 Changing the Desired day temperature
permanently
1. Turn the rotary knob to set the desired temperature.
2. Press the right-hand selection button, OK.
◁The display switches to the basic display. The new
desired day temperature is applied permanently.
4.2.2 Operating example, changing the date
Auto 5,0°C
°C
19,5
15:34
Desired heating temp. 20,0°C
Menu Op. mode
1. If the display does not show the basic display, press the
left-hand selection button, Back, until the basic display
appears again.
2. Press the left-hand selection button, Menu.
◁The controller is now in selection level 1. The left-
hand selection button now has the function Back
(to go back to the previous level), the right-hand
selection button has the function Select (to select
the highlighted menu option).
Menu
Information
Desired temperatures
Time programmes
Back Select
3. Turn the rotary knob until the Basic settings list entry
is highlighted.
Menu
Days away from home scheduling
Days at home scheduling
Basic settings
Back Select
4. Press the right-hand selection button, Select.
◁The controller is now in selection level 2.
Basic settings
Language
Date/time
Display
Back Select
5. Turn the rotary knob until the Date/Time list entry is
highlighted.
Basic settings
LanguageLanguage
Date/timeDate/time
Display
Back Select
6. Press the right-hand selection button, Select.
◁The controller is now in the Date setting level. The
value for the day is highlighted. The left-hand selec-
tion button now has the function Back (to go back to
the previous level), the right-hand selection button
has the function Change (the value).