Vaillant VRT 350f User manual

en Installation instructions
VRT 350f
0020131978_02 - 16.08.2022

2Installation instructions 0020131978_02
Installation instructions
Contents
1 Safety .................................................................... 4
1.1 Action-related warnings ......................................... 4
1.2 Intended use .......................................................... 4
1.3 General safety information .................................... 5
1.4 Regulations (directives, laws, standards) .............. 6
2 Notes on the documentation .............................. 7
2.1 Observing other applicable documents ................. 7
2.2 Storing documents................................................. 7
2.3 Validity of the instructions...................................... 7
3 Product description............................................. 7
3.1 Identification plate.................................................. 7
3.2 CE marking ............................................................ 7
4 Installation............................................................ 8
4.1 Scope of delivery ................................................... 8
4.2 Fitting the radio receiver unit in the boiler.............. 8
4.3 Fit the radio receiver unit in the living room........... 9
4.4 Fitting the radio control ........................................ 11
5 Electrical installation......................................... 12
5.1 Radio receiver unit fitted in the boiler .................. 12
5.2 Connecting the radio receiver unit installed in
the living room ..................................................... 13
6 Start-up ............................................................... 14
7 Operating............................................................ 15
8 Operating and display functions...................... 15
8.1 Service information.............................................. 15
8.2 System configuration: System ............................. 16
8.3 Heat generator system configuration................... 17
8.4 Heating circuit system configuration.................... 17
8.5 System configuration: Domestic hot water
circuit ................................................................... 18
8.6 Radio link system configuration........................... 18
8.7 Changing the code for Installer level ................... 19
9 Replacing components ..................................... 19
9.1 Change batteries ................................................. 19
9.2 Recording radio controller settings ...................... 20
9.3 Replacing the radio receiver unit ......................... 20
9.4 Replacing the radio control.................................. 20
10 Decommissioning.............................................. 21
10.1 Removing the radio receiver unit......................... 21
10.2 Removing the radio control.................................. 22
11 Recycling and disposal..................................... 22
12 Customer service............................................... 23
Appendix ............................................................................ 24
A Overview of installation assistant set-up
options................................................................ 24
B Installer level overview...................................... 24
C Fault messages.................................................. 27
D Faults .................................................................. 28

0020131978_02 Installation instructions 3
E Technical data.................................................... 29
E.1 Control ................................................................. 29
E.2 Radio receiver unit............................................... 30
Index ................................................................................... 31

4Installation instructions 0020131978_02
1 Safety
1.1 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
1.2 Intended use
In the event of inappropriate or improper use,
damage to the product and other property
may arise.
The control controls a heating installation with
Vaillant heat generators with eBUS interface
in a way that is room-temperature-controlled
and time-dependent.
The control can control the domestic hot wa-
ter generation from a connected domestic hot
water cylinder.
Intended use includes the following:
–observance of accompanying operating, in-
stallation and maintenance instructions for
the product and any other system compon-
ents
–installing and setting up the product in ac-
cordance with the product and system ap-
proval
–compliance with all inspection and main-
tenance conditions listed in the instruc-
tions.

0020131978_02 Installation instructions 5
Intended use also covers installation in ac-
cordance with the IP code.
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.
Caution.
Improper use of any kind is prohibited.
1.3 General safety information
1.3.1 Risk caused by inadequate
qualifications
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
–Set-up
–Dismantling
–Installation
–Start-up
–Inspection and maintenance
–Repair
–Decommissioning
▶Proceed in accordance with current tech-
nology.
1.3.2 Risk of death from live connections
When working in the electronics box 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 electronics box of the boiler.
▶Disconnect the boiler from the power
mains by disconnecting the mains plug or
by de-energising the boiler via a partition
with a contact opening of at least 3 mm (e.
g. fuses or power switches).
▶Check that the boiler is de-energised.
▶Secure the power supply against being
switched on again.
▶Open the electronics box only when the
boiler is disconnected from the power sup-
ply.

6Installation instructions 0020131978_02
1.3.3 Material damage due to unsuitable
installation room
If you are installing the control in a wet room,
the electronics may be damaged by moisture.
▶The control should only be installed in dry
rooms.
1.3.4 Danger due to malfunctions
▶Ensure that the heating installation is in a
technically perfect condition.
▶Ensure that no safety or monitoring
devices have been removed, bridged or
decommissioned.
▶Immediately rectify any faults and damage
that may affect safety.
▶Install the controller in a location where it is
not covered by furniture, curtains, or other
objects.
▶If the room temperature modulation is ac-
tivated, advise the end user that, in the
room where the control is installed, all the
radiator valves must be fully open.
▶Do not use the unit's free terminals as sup-
ports for other wiring.
▶Route 230 V connection cables and sensor
or bus cables as of a length of 10 m separ-
ately.
1.3.5 Risk of material damage caused by
frost
▶Do not install the product in rooms prone to
frost.
1.3.6 Risk of material damage caused by
using an unsuitable tool
▶Use the correct tool.
1.4 Regulations (directives, laws,
standards)
▶Observe the national regulations, stand-
ards, directives, ordinances and laws.

0020131978_02 Installation instructions 7
2 Notes on the documentation
2.1 Observing other applicable documents
▶Always observe all the operating and installation instruc-
tions included with the system components.
2.2 Storing documents
▶Pass these instructions and all other applicable docu-
ments on to the end user.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
VRT 350f 0020124482
3 Product description
3.1 Identification plate
The identification plate is located on the rear panel of the
controller casing.
The identification plate contains the following information:
Information on the identific-
ation plate
Meaning
Serial number For identification
Information on the identific-
ation plate
Meaning
VRT XXX Unit designation
V Operating voltage
mA Current consumption
CE label Unit complies with European
standards and directives
Waste container Proper disposal of the unit
3.2 CE marking
The CE marking shows that the products comply with the
basic requirements of the applicable directives as stated on
the declaration of conformity.
The manufacturer hereby declares that the type of radio
equipment that is described in these instructions complies
with Directive 2014/53/EU. The complete text for the EU De-
claration of Conformity is available at: http://www.vaillant-
group.com/doc/doc-radio-equipment-directive/.

8Installation instructions 0020131978_02
4 Installation
You can either install the radio receiver unit within the boiler
or install it separately on a wall in the living area.
You must fit the radio controller on a wall in the living area.
4.1 Scope of delivery
Quant-
ity
Component
1 Control
1 Radio receiver unit
1 Wall base for radio receiver unit
1 Unit mounting bracket for control
2 Fixing material (2 screws and 2 wall plugs)
1 Battery set (4 x AA)
1 3-pin header
1 Operating instructions
1 Installation instructions
4.2 Fitting the radio receiver unit in the boiler
Note
When fitting the radio receiver unit in the boiler's
electronics box, follow the instructions for fitting
a radio receiver unit that are given in the boiler's
installation instructions.
1. Switch off the boiler.
2. Disconnect the power supply to the boiler.
3. Disconnect the boiler from the power grid by pulling
out the mains plug or removing the power supply to the
boiler using a partition with a contact gap of at least
3 mm.
4. Secure the power supply against being switched back
on.
5. Check that there is no voltage in the boiler.
6. If necessary, open the front panel on the boiler.
7. Remove the control panel fascia from the boiler for the
control module.
8. Carefully lever the radio receiver unit from the wall
base.
9. Alternatives 1:
Condition: Vertical plug-in connections with pins in the electronics box.
▶If required, remove the 3-pin header.
▶Carefully press the radio receiver unit into the plug-in con-
nection in the electronics box.

0020131978_02 Installation instructions 9
9. Alternatives 2:
Condition: Horizontal plug-in connections with no pins on the electronics box
1
2
1 Control PCB 2 3-pin header
▶Connect the 3-pin header supplied to the control with the
short ends in the three horizontal openings on the radio
receiver unit PCB.
▶Carefully press the radio receiver unit with the pin header
into the plug-in connection in the electronics box.
10. Switch on the power supply to the boiler.
11. Start up the boiler.
12. If necessary, close the front panel of the boiler.
4.3 Fit the radio receiver unit in the living room
1
2
1 Control PCB 2 3-pin header
1. Check that the 3-pin header is connected to the control
PCB.
Result:
The 3-pin header connector is connected to the control
PCB.
▶Remove the 3-pin header connector.

10 Installation instructions 0020131978_02
2. Fit the radio receiver unit on an internal wall of the main
living room in such a way that ensures that there are
no problems with the radio link between the control and
the radio receiver unit.
Note
Wall-mounting the radio receiver unit is only
necessary if its position needs to be optim-
ised after start-up in order to ensure a good
radio link with the control.
3
4
4
7
6
5
3
2
1
3
1 Radio receiver unit
2 Wall-mounting base
3 Mounting holes
4 Openings for cable
ducting
5 Pin header with termin-
als for the eBUS line
6 Wall-mounting base
cover
7 Slot for screwdriver