Vaillant VRT 350f User manual

en Operating instructions

VRT 350f

0020131979_01 - 13.12.2021

2Operating instructions 0020131979_01

Operating instructions

Contents

1 Safety .................................................................... 3

1.1 Action-related warnings ......................................... 3

1.2 Intended use .......................................................... 3

1.3 General safety information .................................... 4

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 Unit design............................................................. 7

3.2 Control function...................................................... 8

3.3 Frost protection function ........................................ 9

3.4 Identification plate.................................................. 9

3.5 Serial number ........................................................ 9

3.6 CE marking ............................................................ 9

4 Operation.............................................................. 9

4.1 Operating structure................................................ 9

4.2 Operating concept ............................................... 12

5 Operating and display functions...................... 15

5.1 Information........................................................... 15

5.2 Settings................................................................ 16

5.3 Operating modes ................................................. 22

5.4 Special operating modes ..................................... 24

5.5 Messages ............................................................ 25

6 Troubleshooting ................................................ 26

6.1 Detecting and rectifying faults ............................. 26

7 Care and maintenance ...................................... 27

7.1 Caring for the product.......................................... 27

7.2 Changing batteries............................................... 27

8 Decommissioning.............................................. 29

8.1 Replacing the control........................................... 29

8.2 Recycling and disposal........................................ 29

9 Guarantee and customer service..................... 29

9.1 Guarantee............................................................ 29

9.2 Customer service................................................. 29

Appendix ............................................................................ 30

A Overview of operating levels............................ 30

Index ................................................................................... 36

0020131979_01 Operating instructions 3

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 symbols

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 product controls a heating installation

with a Vaillant heat generator with an eBUS

interface in a way that is weather-controlled

and time-dependent.

Intended use includes the following:

–observance of the operating instructions

included for the product and any other in-

stallation components

–compliance with all inspection and main-

tenance conditions listed in the instruc-

tions.

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.

4Operating instructions 0020131979_01

1.3 General safety information

1.3.1 Danger caused by improper

operation

Improper operation may present a danger to

you and others, and cause material damage.

▶Carefully read the enclosed instructions

and all other applicable documents, par-

ticularly the "Safety" section and the warn-

ings.

▶Only carry out the activities for which in-

structions are provided in these operating

instructions.

1.3.2 Risk of scalding from hot 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 target temperature.

1.3.3 Danger caused by a malfunction

▶Ensure that room air can circulate freely

around the control, and that the control is

not covered by furniture, curtains or other

objects.

▶Ensure that all radiator valves in the room

where the control is installed are fully open.

▶Only operate the heating installation when

it is in a technically perfect condition.

▶Ensure that any faults and damage that

may negatively affect safety are eliminated

immediately.

1.3.4 Risk of material damage caused by

frost

▶Ensure that the heating installation always

remains in operation during freezing con-

ditions and that all rooms are sufficiently

heated.

▶If you cannot ensure the operation, have a

competent person drain the heating install-

ation.

0020131979_01 Operating instructions 5

1.3.5 Frost damage caused by switching

the unit 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 power grid.

▶Leave the heating installation main switch

in the "1" position.

1.3.6 Frost damage caused by excessively

low room temperature

If the room temperature is set too low in indi-

vidual rooms, sections of the heating installa-

tion might be damaged by frost.

▶If you are absent during a frosty spell, en-

sure that the heating installation remains in

operation and the rooms are warmed ad-

equately.

▶Please note the frost protection function.

1.3.7 Batteries

▶Note the battery type, as described in

these instructions; see section "Data plate".

▶Remove and insert batteries as described

in these instructions; see section "Chan-

ging the batteries".

▶Do not recharge non-rechargeable batter-

ies.

▶Remove rechargeable batteries from the

product before charging them.

▶Do not combine batteries with other battery

types.

▶Do not combine new and used batteries.

▶Insert the batteries, making sure that the

poles are the right way round.

▶Remove the dead batteries from the

product and dispose of them correctly.

▶Remove the batteries if you intend to store

the product and not use it for an extended

period and/or to scrap it.

▶Do not short-circuit the connection contacts

in the product's battery compartment.

6Operating instructions 0020131979_01

1.3.8 Risk of material damage caused by

acid

▶Remove any dead batteries from the

product and dispose of these properly.

▶Remove the batteries if you intend to store

the product and not use it for an extended

period.

1.3.9 Danger!

▶Risk of burns!

▶Risk of electric shock!

▶For units that are connected to the grid.

▶Before installing the unit, carefully read

through the installation instructions.

▶Before starting up the unit, carefully read

through the operating instructions.

▶Observe the maintenance regulations in

the operating instructions.

0020131979_01 Operating instructions 7

2 Notes on the documentation

2.1 Observing other applicable documents

▶Always observe all operating instructions enclosed with

the installation components.

2.2 Storing documents

▶Store these instructions and all other applicable docu-

ments for further use.

2.3 Validity of the instructions

These instructions apply only to:

Product article number

VRT 350f 0020124482

3 Product description

3.1 Unit design

1 Wall-mounting base with

bracket

2 Display

3 Diagnostics socket

4 Wall-mounting base

cover

8Operating instructions 0020131979_01

5 Right-hand selection

button

6 Rotary knob

7 Left-hand selection

button

1 Wall-mounting base

2 Diagnostics socket

3 LED

4 Teach-in button

3.2 Control function

The control controls the Vaillant heating installation and do-

mestic hot water generation of a connected domestic hot wa-

ter cylinder.

If the control is installed in a living room, you can operate the

heating installation and domestic hot water generation from a

living room.

3.2.1 Heating installation

The controller is a room-temperature-controlled controller

and must be installed in the living room. You can use the

controller to set a desired temperature for different times of

the day and for different days of the week. The temperature

sensor measures the room temperature and forwards the val-

ues to the controller. At lower room temperatures, the con-

troller switches the heat generator on. Once the room tem-

perature reaches the desired set temperature, the control-

ler switches the heat generator off. The controller therefore

reacts to the fluctuations of the room temperature and con-

stantly controls the room temperature to the temperature that

you have set.

The controller is powered by batteries. Data transmission

between the controller and the radio receiver unit takes place

via radio communication. Data transmission between the

radio receiver unit and the boiler takes place via an eBUS

interface, which also provides the power supply for the radio

receiver unit.

Data communication and the power supply for the con-

troller is provided via eBUS interface. The controller can

0020131979_01 Operating instructions 9

be equipped with the Vaillant diagnostics software and

the Vaillant Internet communication system for remote

diagnostics and remote settings.

3.2.2 Domestic hot water generation

You can use the control to set the temperature and time for

domestic 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.

3.3 Frost protection function

The frost protection function protects the heating system and

apartment from frost damage.

The frost protection function monitors the room temperature.

If the room temperature

–falls below 5 °C, the controller switches the heater on and

controls the system to a target room temperature of 5 °C.

–exceeds 5 °C, the heater is switched off but the room

temperature monitoring remains active.

3.4 Identification plate

The identification plate is located on the rear panel of the

controller casing.

3.5 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.

3.6 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/.

4 Operation

4.1 Operating structure

4.1.1 Adjustment and display levels

The product has two adjustment and display levels.

The end user level contains information and setting options

that you require as the end user.

10 Operating instructions 0020131979_01

Overview of operating levels (→Page 30)

The installer level is reserved for the competent person. It is

protected by a code. Only competent persons may change

any settings in the installer level.

4.1.2 Menu structure design

The menu structure of the controller is split into three levels.

There are two selection levels and one setting level. From

the basic display, you can 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.

4.1.3 Basic display

Auto 01.07.11

°C

19,5

15:34

Desired temperature 20,0°C

Menu Mode

1 Date 2 Current room temperat-

ure

3 Time

4 Current function of the

right-hand selector but-

ton (soft key function)

5 Current function of the

left-hand selector button

(soft key function)

6 Desired temperature

7 Symbol for heating

mode in Auto mode

8 Mode set for the heating

mode

The control is battery-powered. To save power and thus ex-

tend the service life of the batteries, the display is normally

switched off. If you press one of the selection buttons or turn

the rotary knob, the background lighting switches on and the

basic display appears. At this point, you have not changed

any settings. Only if you press one of the selection buttons or

turn the rotary knob when the display or background lighting

is switched on are the settings changed.

The basic display shows the current settings and values of

the heating installation. If you make a setting on the control,

the display on the screen switches from the basic display to

the display for the new setting.

The background lighting goes out approx. 10 seconds after

the last operation. The display switches off approx. 1 minute

after the last operation.

4.1.3.1 Symbols for the Auto operating mode

Symbol Meaning

Day mode: Within a set time period

Night mode: Outside a set time period

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