Vaillant Control Center VR 65 User manual

For the qualified engineer
VR 65
Installation instructions
Control Center VR 65
Control Center for storage connection (eBUS)
GB

3Installation Instructions for Control Center VR 65
1 Notes on the documentation
The following information is intended to help you
throughout the entire documentation.
Further documents apply in combination with this instal-
lation instructions.
We accept no liability for any damage caused by non-
observance of these instructions.
Other applicable documents
When operating the equipment, please observe the oper-
ating instructions for the different system components.
Attachment and storage of the documents
The wiring diagram can be found on the inside of the
housing cover.
Please pass on this installation manual to the owner of
the system so that he can keep it available whenever it
is required.
Symbols used
Please observe the safety instructions in this installation
manual!
Danger!
Immediate risk of serious injury or death.
Danger due to high voltage!
Immediate danger to life and limb!
Caution!
Potentially dangerous situation for the product
and environment.
Note!
Useful information and instructions.
• Symbol for a necessary task
2 Description of the appliance
The Control Center VR 65 offers a solution to allow
Vaillant low voltage ‘eBUS’ controls to be used with the
traditional 230 V zone valves and DHW storage cylinder
in the English market.
Information about the heat required by the cylinder is
forwarded by the Control Center VR 65 to the Vaillant
ecoTEC heating appliance. The boiler then decides
whether a hot water request has to be fulfilled and
sends a signal to position the 230 V zone valves via the
VR 65.
In this way, the boiler can store different target tempera-
tures for heating and warm water operation.
Standard 230 V components can be integrated into the
Vaillant eBUS system via the Control Center VR 65.
Contents
Notes on the documentation 1
Description of the appliance 2
Contents
1 Notes on the documentation . . . . . . . . . . . . . 3
2 Description of the appliance. . . . . . . . . . . . . . 3
2.1 Data badge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 CE label/conformity . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Safety instructions and regulations . . . . . . . 4
3.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Installation overview . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.4 Assembling Control Center VR 65 . . . . . . . . . . . . 6
5 Electrical installation . . . . . . . . . . . . . . . . . . . 6
5.1 Installing the VR 65 with one 3-port valve . . . . . 7
5.2 Installing the VR 65 with two 2-port valves . . . . 8
5.3 Installing the VR 65 with a NTC . . . . . . . . . . . . . . 9
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . 10
8 Factory customer service. . . . . . . . . . . . . . . . 11
9 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 11

4Installation Instructions for Control Center VR 65
The following components can be connected
- 230 V 3-port mid-position valve
- 230 V cylinder thermostat
or alternatively
- 2 x 230 V 2-port zone valves
- 230 V cylinder thermostat
When Vaillant uniSTOR cylinder is installed, the NTC sen-
sor VR 10 supplied with the VR 65 can be used instead
of the 230 V cylinder thermostat.
This will then allow the cylinder temperature to be set at
the Vaillant ecoTEC boiler or at the Vaillant VRT 360 or
VRC 400 control.
The cylinder temperature can also be set remotely via
vrnetDIALOG.
2.1 Data badge
The data badge is on the inside of the VR 65 Control
Centre housing cover.
2.2 CE label/conformity
The CE label documents that the Control Center VR 65,
in connection with Vaillant condensation boilers, fulfils
the basic requirements of the following guidelines:
- Electromagnetic compatibility directive (Guideline 89/
336/EEC of the council)
- Low voltage directive (73/23/EEC)
2.3 Intended use
The Control Center VR 65 is a state-of-the-art appliance
which has been designed in accordance with recognised
safety regulations. Nevertheless, dangers to the life and
limb of the user or third parties can still occur or the
appliance or other material assets may be impaired in
the event of improper use or use for which the applianc-
es are not intended.
The Control Center VR 65 is an eBUS system compo-
nent.
It is responsible for the communication between the
DHW cylinder, the boiler and external 230 V 2- or 3-port
valves.
Any other use or extended use is considered to be
improper use. The manufacturer/supplier is not liable for
any resulting damage. The user alone bears any risk.
Intended use includes the observance of the installation
manual.
Note!
The VR 65 is designed to control one 3-port
valve or two 2-port valves. Systems requiring
more zone valves or a combination of 3-port
and 2-port valves are not possible.
Note!
The VR 65 requires a 230 V supply. The
ecoTEC boiler also requires a 230 V supply. The
eBUS wiring between the two will not provide
230 V from one device to the other!
3 Safety instructions and regulations
The Control Center must be installed by a suitably quali-
fied heating engineer, who is responsible for observing
all relevant standards and regulations.
We accept no liability for damage caused by non-obser-
vation of these instructions.
3.1 Safety instructions
Danger!
Risk of death from electric shock through con-
tact with live connections!
Isolate the mains power supply before working
on the unit, and ensure that the power cannot
be accidentally restarted.
Using the mains switch on the VR 65 or on the
heating appliance is not sufficient to isolate all
terminals of the system.
3.2 Regulations
All wiring must be in accordance with Building
Regulations Part P, current IEE regulations, and must be
carried out by a competent person.
Standard wires must be used for wiring.
Minimum cross-section of wires:
- Power supply 230 V (connection cable
to pumps or Control Center) 1.5 mm2
- Extra-low voltage supply
(sensor or bus wires) 0.75 mm2
Do not exceed following maximum wire lengths:
- Sensor connection 50 m
- Bus wire 300 m
Where sensor and ‘eBUS’ cables run in parallel with
230 V cables over a length of 10 m, they must be sepa-
rated by at least 25 mm.
230 V connection leads must be 1.5 mm2and secured
using the cable clamps supplied.
Do not use free terminals on the devices as support ter-
minals for other wiring.
The unit must be installed in a dry room.
2 Description of the appliance
3 Safety instructions and regulations

5Installation Instructions for Control Center VR 65
4 Installation
The Control Center can be wall-mounted near to the
DHW cylinder. The hot water and heating programs as
well as all required parameters are set at the VRT 360
or VRC 400. All heating circuit connections are made at
the Control Center using a ProE plug.
4.1 Installation overview
Please check the following before installing the VR 65
Control Center:
- Read the installation instructions
- Check the scope of delivery
- Assemble the VR 65
- Carry out electrical installation
4.2 Scope of delivery
Using Table 4.1, check that all the components have been
delivered with the VR 65.
Pos. Number Components
1 1 Control Center VR 65
2 1 Standard sensor VR 10
3 1 Cable clamps (7 pcs.)
4 1 Bag of screws
Table 4.1 Scope of delivery of the Control Centers VR 65
4.3 Accessories
- timeSWITCH 140
Digital 2-channel timer with daily/weekly program for
heating and hot water.
The timeSWITCH 140 can be plugged into the Vaillant
ecoTEC boiler.
There are three individually programmable time win-
dows per day for heating and hot water. The timer can
be set to run a weekly or a daily program.
By activating the calendar function, an automatic
summer/winter changeover is activated.
- VRT 360
Digital room temperature thermostat with daily/weekly
program for time and temperature control of heating
and hot water.
Designed for wall mounting.
There are three individually programmable time win-
dows per day for heating, hot water and a hot water
circulation pump. Different target room temperatures
can be set for each time window.
The thermostat can be set to run a weekly or a daily
program.
By activating the calendar function, an automatic
summer/winter changeover is activated.
- VRC 400
Digital weather-dependent control with daily/weekly
program for time and temperature control of heating
and hot water.
Designed to plug into the Vaillant ecoTEC boiler or for
wall mounting.
Set the heating curve to adjust the flow temperature
to suit the heat requirement of the building. Optimises
the flow temperature to the prevailing weather condi-
tions.
There are three individually programmable time win-
dows per day for heating, hot water and a hot water
circulation pump. Different target room temperatures
can be set for each time window.
The control can be set to run a weekly program or a
daily program.
By activating the calendar function, an automatic sum-
mer/winter changeover is activated.
Caution!
Do not use a VRT 360 or VRC 400 in combina-
tion with an additional room temperature ther-
mostat e.g. VRT 30 due to the impact this may
have on the operation of the VRT 360 or VRC
400.
Installation 4

6Installation Instructions for Control Center VR 65
4.4 Assembling Control Center VR 65
The Control Centre connection terminals are provided
with System ProE plugs. All onsite connections must be
made using these plugs.
Fig. 4.1 Opening the Control Centers
• Press the catch on the upper edge of the box down-
wards using a screw driver.
• Pull the housing cover forwards.
USE
DO NOT
230V~
NL
21
NTC
CYL. CH DHW
Non onoff
DHW
onN
BUS
+-
2
3
1
4
Fig. 4.2 Assembling the Control Centers
Key
1 Operating LED
2 Fixing holes
3 Cable clamps
4 On/Off switch
• Mark out the 2 fixing holes (2) and drill the holes.
• Select the wall plugs to suit the state of the wall and
screw the housing tight.
• Wire up the Control Center as shown in the wiring dia-
grams (fig. 5.2 or 5.3).
• Fix all cables using the cable clamps (3).
• Finally, press the covering back onto the housing so
that is clicks into place audibly.
5 Electrical installation
The electrical connection must be done by a suitably
qualified heating engineer who is responsible for com-
plying with the existing standards and guidelines.
Danger!
Risk of death from electric shock through con-
tact with live connections!
Isolate the mains power supply before working
on the unit, and ensure that the power cannot
be accidentally restarted.
Using the mains switch on the VR 65 or on the
heating appliance is not sufficient to isolate all
terminals of the system.
Caution!
In order to avoid damage to the heating appli-
ance or the VR 65 Control Centre, any existing
230 V wiring box installation must be removed
completely.
230 V
VR 65
optional
(VRT 360 or
VRC 400)
Vaillant
ecoTEC
230 V~
eBUS connection
optional
VRC 693 for
VRC 400
Fig. 5.1 Connection of eBUS and mains cable in the system
4 Installation
5 Electrical installation

7Installation Instructions for Control Center VR 65
5.1 Installing the VR 65 with one 3-port valve
• Wire up the Control Center as shown in fig. 5.2.
• Connect the eBUS terminals of the VR 65 to the eBUS
terminals of the heating appliance using a two-core
cable. The polarity of the eBUS cable can be mixed.
The eBUS can be branched at any part of the system.
The Control Center VR 65 requires its own 230 V mains
supply via a switched fused spur.
The boiler also requires a 230 V supply.
Note!
The VR 65 has a mains switch (see fig. 4.2) to
isolate the internal electronics as well as all
connected zone valves for the purposes of tests
and maintenance. When the housing cover has
been removed, a green LED indicates if the
VR 65 is still connected to the mains voltage.
CYL.
USE
DO NOT
230 V~
NL
M
3-Port
EARTH
BLUE
BROWN or
WHITE
ORANGE
GREY
DHW
onN
CH DHW
Non onoff
BUS
+- 21
NTC
* NTC (for use with
Vaillant uniSTOR only)
* Cylinder
thermostat
* Note: With Vaillant uniSTOR - use either the cylinder thermostat or the NTC
optional
(VRT 360 or
VRC 400)
VR 65 Vaillant
ecoTEC
230 V wires
eBUS (24 V)
optional (24 V)
230 V~
230 V~
Connection of Control Center
Fig. 5.2 Connection with 3-port valve
Electrical installation 5

8Installation Instructions for Control Center VR 65
5.2 Installing the VR 65 with two 2-port valves
• Wire up the Control Center as shown in fig. 5.3.
• Connect the eBUS terminals of the VR 65 to the eBUS
terminals of the heating appliance using a two-core
cable. The polarity of the eBUS cable can be mixed.
The eBUS can be branched at any part of the system.
The Control Center VR 65 requires its own 230 V mains
supply via a switched fused spur.
The boiler also requires a 230 V supply.
Note!
The VR 65 has a mains switch (see fig. 4.2) to
isolate the internal electronics as well as all
connected zone valves for the purposes of tests
and maintenance. When the housing cover has
been removed, a green LED indicates if the
VR 65 is still connected to the mains voltage.
CYL.
USE
DO NOT230 V~
NL
CH
DHW
M
M
EARTH
BLUE
BROWN
BLUE
BROWN
2-Port
DHW
onN
CH DHW
Non onoff
BUS
+- 21
NTC
EARTH
* NTC (for use with
Vaillant uniSTOR only)
* Cylinder
thermostat
* Note: With Vaillant uniSTOR - use either the cylinder thermostat or the NTC
optional
(VRT 360 or
VRC 400)
VR 65 Vaillant
ecoTEC
230 V wires
eBUS (24 V)
optional (24 V)
230 V~
230 V~
Connection of Control Center
Fig. 5.3 Connection with two 2-port valves
5 Electrical installation

9Installation Instructions for Control Center VR 65
5.3 Installing the VR 65 with a NTC
Note!
To comply with the approvals, the boiler must
be Vaillant ecoTEC if the cylinder NTC solution
is used.
Before installing the NTC, first remove the cylinder con-
trol with two capillary tubes for the cylinder thermostat
and thermal cut out.
The cylinder control is be fitted in one of two ways
(A or B).
• Disconnect the wires (1) from the terminal block of the
cylinder control (a).
• Version A, fig. 5.4:
Unclip the cylinder control (a) and remove it from the
terminal box (see 2, fig. 5.4).
(Version B, fig. 5.5:
To remove the cylinder control (a) release the clips
with two screw drivers as shown in fig. 5.5)
• Remove the capillary tubes (3) of the thermostat and
the thermal cutout from the dry pocket of the
uniSTOR.
Ensure that the capillary tube of the immersion sensor
is not removed.
• Now the NTC can be pushed into the free dry pocket
of the cylinder as shown in fig. 5.6.
• The NTC is wired into the VR 65 as shown in fig. 5.2 or
fig. 5.3.
2
3
a
b
1
Fig. 5.4 Removing the cylinder control (Version A)
Legende:
a Cylinder control
b Immersion Heater Control
3
a
b
1
Fig. 5.5 Removing the cylinder control (Version B)
Legende:
a Cylinder control
b Immersion Heater Control
Fig. 5.6 Installing the NTC
Electrical installation 5

10 Installation Instructions for Control Center VR 65
6 Start-up
The initial start-up of the VR 65 is carried out together
with the initial start-up of the heating appliance.
Note!
In the factory settings, the heating appliance
operation is set to warm water priority.
Note!
To comply with the approvals, the boiler must
be Vaillant ecoTEC if the cylinder NTC solution
is used.
If a parallel operation for central heating and charging of
the DHW cylinder is required, change this setting on the
boiler in the following way.
• Press the “i” and “+” keys simultaneously.
The display shows “d.00”.
• Use the “+” or “-” keys to scroll to the diagnostic
number d.97 to enter the second diagnostic level.
• Press the “i” key.
The display shows the relevant diagnostic information.
• Use the “+” or “-” keys to change the value (display
flashes) to 17 (password).
• Save the new value by pressing and holding down the
“i” key for approx. 5 seconds until the display no long-
er flashes.
• Use the ‚+‘ and ‚-‘ keys to scroll to the diagnostic point
d.70
• Press the “i” key.
Change the setting using the ‚+‘ and ‚-‘ keys.
• Save the new value by holding down the “i” key for
approx. 5 seconds until the display no longer flashes.
You can end the diagnostic mode as follows:
• Press the “i” and “+” keys simultaneously.
The following settings are possible:
Display Meaning Factory
setting
0Warm water priority
- The 3-port valve is in the heating or
hot water position depending on the
operating mode.
- With 2-port valves, either the DHW
valve or the CH valve is open, both
valves are closed on standby.
x
1Enable mid position
- The 3-port valve is in the mid position
for simultaneous heating and hot
water request, or in the heating or
hot water position, depending on the
operating mode.
- With 2-port valves, both valves are
open during simultaneous heating
and hot water request. Otherwise,
only one valve is always open and
both valves are closed on standby.
2Only heating mode (only for test
operation!)
- Only the CH valve is activated.
Table 6.1 Heating appliance settings
7 Troubleshooting
The Control Center VR 65 has a green Operating LED,
which can be monitored when the housing cover is
removed (see fig. 4.2).
Problem Cause Remedy
LED permanently
off No 230 V supply available or fuse in
appliance defective
- Check whether the
mains voltage cable
is connected
correctly.
- Check the mains
fuse for the 230 V
supply and
reconnect the mains
supply.
- Replace the mains
fuse in the VR 65
(4 A slow).
LED permanently
on No error - Normal operation
LED flashes quickly Short circuit of the
connected tempera-
ture sensor (NTC) in
the DHW cylinder
- Check the cable of
the temperature
sensor (NTC) for
damage.
- Replace the temper-
ature sensor (NTC)
in the DHW cylinder.
LED flashes slowly Communication error
in eBUS protocol to
the boiler
- Inform the Vaillant
customer service.
Table 7.1 Troubleshooting
6 Start-up
7 Troubleshooting

11Installation Instructions for Control Center VR 65
Factory customer service 8
Technical data 9
8 Factory customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance
Agreement. Please contact Vaillant Service Solutions
(0870 6060 777) for further details.
9 Technical data
Feature Unit VR 65
Operating voltage V 230
Power consumption VA 2
Contact load of output relays (max.) cos ϕ> 0.6 A2
Contact voltage for DHW cylinder thermostat V 230
Operating voltage of temperature sensor (NTC) V 5
Minimum cross-section of the temperature sen-
sor cables, eBUS cables mm20.75
Minimum cross-section of the power supply
cable (rigid cable, NYM) mm21.5
Maximum ambient temperature °C 70
Housing dimensions
Height mm 174
Width mm 272
Depth mm 52
Level of protection IP 20
Protection class II
Table 9.1 Technical data

0020007476_02 GB 11 2005