Vaillant VRT 392f Operation Manual

For the operator / for the expert technician

Operating and Installation Manual

VRT 392f

Room thermostat with radio transmission

VRT 392f

GB

For the owner

Operating manual

VRT 392f

VRT 392f

Room thermostat

Contents

Equipment properties ................................................4

Application ............................................................................4

Pr

oduct specifications ........................................................4

1 No

tes on the documentation ......................... 5

1.1 S

torage of the documents ....................................5

1.2 S

ymbols used ...........................................................5

1.3 V

alidity of the instructions ...................................5

1.4 CE

label ......................................................................5

2 S

afety ............................................................... 5

3 Ins

tructions for operation .............................6

3.1 In

tended use .............................................................6

3.2 Ambien

t conditions .................................................6

3.3 C

are ............................................................................6

3.4 Manuf

acturer's guarantee .....................................6

3.5 R

ecycling and disposal ...........................................6

4 Oper

ation ......................................................... 7

4.1 Ov

erview operating and display front ................7

4.2 Ov

erview of the displays .......................................8

4.3 Oper

ating concept ..................................................8

4.3.1 Sho

w various screens ............................................9

4.3.2 Changing

parameters .............................................9

4.3.3 Oper

ation in the default display ..........................11

4.4 Changing

the target room temperature ...........12

4.5 Oper

ation level for the operator, operation

level for the expert technician ............................13

4

.6 S

creens at the operation level for the

operator ....................................................................13

4

.7 E

diting screens (examples) ................................. 15

4.7.1 En

tering time programmes

(example for heating) ........................................... 15

4

.7.2 Pr

ogramming holiday periods ............................ 16

4.7.3 He

ating settings .................................................... 16

4.7.4 En

tering the parameters for hot water

generation ................................................................17

4

.7.5 Changing

the name of the system

components .............................................................17

5 S

tatus and error messages ......................... 18

Operating manual VRT 392f 0020044239_014

Equipment properties

Application

The VRT 392f is a programmable room temperature
controller for the heating system. The VRT 392f also
controls the hot water generation.

You can use the VRT 392f to specify various room target
temperatures (programming) — for different times of the
day and for different days of the week.
In automatic mode, the VRT 392f controls your heating
in accordance with this input (see Fig. 0.1).

You can also use the VRT 392f to define daily heat-up
times for hot water generation.

Fig. 0.1 Automatic heating operation: Example of setting the

room target temperature for different times of the day

In addition, the VRT 392f can be used to control the
following accessory components:
– Circulation pump for water heating in combination

with a VR 40 multi-functional module
– Conventional hot water cylinder
– Vaillant layer type storage tank actoSTOR

The VRT 392f can be part of a new heating and hot
water system or it can be incorporated into
existing heating systems. The appliance must have an
eBUS interface.

eBUS is a standard communication method used for

the exchange of data between heating technology

components.

Product specifications

– eBUS interface
– Wireless communication with a Vaillant appliance
– Illuminated graphical display (display field)
– Operation via both dials in accordance with the

principle "Turn and Click"

– The radio receiver unit can be mounted directly on the

operating panel of the appliance or separately on the
wall

- The controller can be mounted separately on the wall
– Equipped for operation with the Vaillant diagnosis

software vrDIALOG 810/2 and the Vaillant Internet
Communication System vrnetDIALOG, i.e. remote
diagnosis and remote adjustment

Equipment properties

04:00 16:0008:00 12:00

20:00

15 °

20 °

25 °

Room temperature

Time

Set back temperature

Period 1

Period 3Period 2

5Operating manual VRT 392f 0020044239_01

1 Notes on the documentation

The following notes are intended to help you throughout
the entire documentation. Further documents
apply in combination with this operating manual.
We accept no liability for any damage caused by failure
to observe these instructions.

Other applicable documents
– Installation instructions for the Vaillant room

thermostat VRT 392f (Part 2 of this document;

for the expert technician)
– The operating and installation instructions for your

heating system
– All instructions for the accessories

Glossary

An explanation of technical terms and important
functions is provided in alphabetical order at the end of
this document.

1.1 Storage of the documents

Please store this operating manual and all related
documents in such a way that they are available
whenever required.

1.2 Symbols used

Please observe the safety instructions in this manual for
the installation of the appliance!

e

Danger!

Immediate risk of serious injury or death!

e

Danger!

Danger of death by electric shock!

H

Caution!

Danger of burning and scalding!

a

Caution!

Potentially dangerous situation for the product
and environment!

h

Note

Useful information and tips.

Symbol for a necessary task

1.3 Validity of the instructions

These operating instructions apply exclusively for
equipment with the following part numbers:

0020028510, 0020028511, 0020028512, 0020028513,
0020028514

4024074518083, 4024074518090, 4024074518106,
4024074518113, 4024074518328

The part number of your equipment can be obtained
from your expert technician.

1.4 CE label

The CE label confirms that the Vaillant Room
Temperature Controller VRT 392f fulfils the
fundamental requirements of the following relevant
directives.

2 Safety

The VRT 392f may only be installed by a certified expert
technician. This person is also responsible for the proper
installation and initial operation.

H

Caution!

Risk of being scalded by hot water!
When the target temperature is
abo

ve 60 °C, there is a risk of scalding at the
hot water taps. Small children and elderly
people can be at danger even at lower
temperatures.
Risk to persons should be excluded through the
selection of an appropriate target temperature
(see Section 4.7.4).

Caution!

Risk

of being scalded by hot water!
If your expert technician has activated the
anti-legionella function for the hot water
cylinder, the temperature of the hot water at
the draw-off points may exceed 60 °C at
specific times.
Find out from your expert technician whether
the anti-legionella function has been activated
and if so, on what day and at what time.

Notes on the documentation 1

Safety 2

Operating manual VRT 392f 0020044239_016

3 Instructions for operation

3 Instructions for operation

3.1 Intended use

The VRT 392f is a state-of-the-art device which has
been constructed in accordance with the standard safety
regulations.
However, in the event of improper use or use not as
intended, impairment of the equipment and other items
can arise.

The VRT 392f serves the room temperature and time­dependent control of a heating installation with or
without hot water generation/circulation pump in
conjunction with a Vaillant appliance and an eBUS
interface.
Operation with the following accessories is permissible:

– Circulation pump for water heating in combination

with a VR 40 multi-functional module
– Conventional hot water cylinder
– Vaillant layer type storage tank actoSTOR

Any other use or extended use is considered to be use
other than intended. The manufacturer or supplier is not
liable for any resulting damage. The owner alone bears
any risk.
Intended use also includes observance of the Operating
and Installation Manual as well as all other applicable
doc

uments.

3.2 Ambient conditions

The controller and radio receiver unit may only be
installed in dry rooms.

Please make sure:
– that

the air in the room can circulate freely around the
VRT 392f and the VRT 392f is not covered by
furniture, curtains or other objects.

– that

all the radiators in the room where the VRT 392f
is fitted are fully on.

3.3 Care

Clean the casing of the VRT 392f with a damp cloth.
Do not use abrasive materials or cleaning agents that
could damage the operator control elements, parts of
the casing or display.

3.4 Manufacturer's guarantee

Vaillant warranty

We only grant a Vaillant manufacturers warranty if
a

suitably qualified engineer has installed the system in
accordance with Vaillant instructions. The system owner
will be granted a warranty in accordance with the
V

aillant terms and conditions. All requests for work

during

the guarantee period must be made to

V

aillant Service Solutions (0870 6060 777).

Vaillant Service

To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance
A

greement. Please contact Vaillant Service Solutions

(0870 6060 777) for further details.

3.5 Recycling and disposal

Your VRT 392f and its packaging are primarily made
of recyclable raw materials.

Appliance

The VRT 392f and its accessories must not be disposed
of in the household waste. Make sure the old device and
any existing accessories are disposed of properly.

Packaging

Please leave the disposal of the transport packaging to
the qualified servicing company which installed the
appliance.

Batteries

Batteries must not be disposed of in the household
waste. Ensure that the batteries are disposed of
properly.

7Operating manual VRT 392f 0020044239_01

4 Operation

h

Note

Have your expert technician explain the
operator input for the controller once the
installation is complete. This will prevent the
settings being changed unintentionally.

4.1 Overview operating and display front

Th. 12.01.06
11:46

Auto

19.0 °C

VRT 392f

2

3

1

Fig. 4.1 Overview of operator control and display panel

Key

1 Display
2 Operating element of the right-hand dial
3 Operating element of the left-hand dial

Fig. 4.1 shows the default display. The following
information can be obtained from the default display:
– the type of operation (automatic, manual or off) of the

heating circuit

– the current room temperature

The default display is described in detail in Section 4.3.3.

The functions of both dials are described in Section 4.3.

h

Note

The display is normally switched off to save
power. This increases the service life of the
batteries.
T

he display and lighting are activated as soon
as you turn or click one of the dials. If the
appliance is not used for more than one minute
the basic display returns and switches off after
approx. 10 minutes.

Note

W

hen the dial is turned the values to be
displayed must first be called up by the radio
receiver unit. Until these values are obtained
only dashes instead of values will be displayed
(--). This generally takes up to two seconds.
Depending

on the ambient conditions, it may
take up to 15 minutes until the current data are
called up by the radio receiver unit and are
subsequently displayed.
If

dashes (--) are displayed continuously,

consult your expert technician.

Operation 4

Operating manual VRT 392f 0020044239_018

4.2 Overview of the displays

The display and input parameters (operating values) of
the VRT 392f are shown on the various screens.
The screens are sub-divided into:
– Default display (Fig. 4.8)
– Basic display (Fig. 4.2)
– Display/input screens for certain parameters in the

operator level

– Display/input screens for operating and

s

ystem-specific parameters at the expert technician

level

All the screens are divided into three areas.

56.0 °C

Auto

> Change room temperature

21.0 °C

T

h. 12.01.06

11:46

HC1

Auto Hot water

1

2

3

Fig. 4.2 Overview display (example basic display)

Key

1 Area for basic data, title of the screen or status and error

messages
2 Area for display and input of parameters
3 Area for display of explanations

The basic data are:
– Current day
– Date
– Time of the day

The title of the screen appears instead of the basic data
in the display/input screens for the specific parameters
(see Fig. 4.12).

> Change room temperature

Th. 12.01.06
11:46

HC1

Hot water

5

6.0 °C

21.0 °C

Auto

Auto

1

2 3

4

Fig. 4.3 Area for display and input of parameters

(example basic display)

Key

1 Parameter name (only display)
2 The cursor

marks the jump to a modifiable value
3 Input field for parameter values; here: target set temperature
4 Input field for parameter values; here: Operating mode

4.3 Operating concept

The operator input in the default display is described in
Section 4.3.3.
The operating concept described below applies to the
basic display (Fig. 4.2) and to the various different
display/input screens of the user level.

The two dials (Fig. 4.1 Items 2 and 3) function according
t

o the Vaillant "Turn and Click" principle.
When turning (forwards or backwards) the adjusters
locate in the next position with a detectable click. Each
index step also moves the cursor one position forwards
or backwards in the display.
By clicking (pressing) you can highlight or accept
changes to a parameter.

Action Result

Left-hand dial

Turn Scroll to next screen

Right-hand dial

Turn Scroll to an

input field within
a

screen (marked by

cursor

)

Changing a parameter

Clicking
(pushing)

Highligh

t for

changing

Turn Change the

parameter value

Clicking
(pushing)

A

cceptance of
selected parameter
value

Table 4.1 Operating concept

4 Operation

9Operating manual VRT 392f 0020044239_01

4.3.1 Show various screens

By turning the left-hand dial you can page through the
individual screens of the display like a book.

Example:

You are now located in the basic display. A description of
how to navigate to the basic display is provided in
Section 4.3.3.

Turn the left-hand dial clockwise by one notch.

The screen

1 appears in the display together

with the basic data setting options.

Th. 12.01.06
11:46

HC1

22.0 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Basic data

1

Date 21. 06. 06
Day We
Time 12 : 00 o'clock

Summer/Winter changeover Auto

> Select day

HC 1
Time programme

2

Mo

1 06 : 00 - 10

: 40 21.5 °C

2 : -

:

3 : -

:

> S

elect day of week

Fig. 4.4 Display of the various screens

4.3.2 Changing parameters

Turn the right-hand dial to scroll through the

parameters within the screen.

The position is indicated by the cursor

(see Fig. 4.5).

If a parameter (e.g. a date with day, month, year)
consists of several elements, scroll from one element to
the next by turning the right-hand dial.

Th. 12.01.06
11:46

HC1 21.

0 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Th. 12.01.06
11:46

HC1 21.

0 °C

Auto

Hot water 56.0 °C Auto

>

Change operating mode

Th. 12.01.06
11:46

HC1 21.

0 °C Auto

Hot water 56.0 °C Auto

>

Change target hot water

Fig. 4.5 Scroll to various different modifiable parameters

Operation 4

Operating manual VRT 392f 0020044239_0110

Click the right-hand dial.

The parameter value marked by the cursor

is inversely

displayed.

Th. 12.01.06
11:46

HC1

21.0 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Fig. 4.6 Highlighting a parameter

Turn the right-hand dial to show the

possible values.

Th. 12.01.06
11:46

HC1

21.0 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Th. 12.01.06
11:46

HC1

21.5 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Th. 12.01.06
11:46

HC1

22.0 °C Auto

Hot water 56.0 °C Auto

>

Change room temperature

Fig. 4.7 Changing the values of a parameter

Click the right-hand dial.

The value displayed is confirmed and adopted for control
purposes. The value is saved and is no longer
highlighted.

4 Operation

11Operating manual VRT 392f 0020044239_01

Changing parameters in the basic display

Parameter Meaning

Heating circuit (HC1)

Room target
temperature

The heating is controlled with
reference to the modified room target
temperature for a specific period that
depends on the operating mode
selected, also see Section 4.4.

Operating
mode
A

uto(matic)

The control of the heating unit is
carried out in accordance with the
preset room set target temperature,
the time programmes and other
parameters such as e.g. night set back
temp.
Some of these parameters are set by
your expert technician.

Operating
mode
Manual

T

he control of the heating unit
depends upon the set room target
temperature.

Operating
mode
OFF

T

he appliance is switched off. The
room temperature is not displayed and
cannot be changed.
Frost protection (room set target
temperature = 5 °C) is guaranteed.

Hot water

Hot water
target set
temperature

The water heating is controlled with
reference to the modified target hot
water value for a specific period that
depends on the operating mode
selected, also see Section 4.4.

Operating
mode
A

uto(matic)

The hot water generation is controlled
according to the target hot water and
time programme settings.

Operating
mode
Manual

T

he hot water generation is controlled
with reference to the target hot water
setting.

Operating
mode
OFF

T

he hot water is switched off. The
target hot water temperature is not
displayed and cannot be changed.
Frost protection is active.

Table 4.2 Modifiable parameters in the basic display

Example: Change the room set target temperature of
the heating circuit (HC1)

Initial condition: You are in the basic display
(

see Fig. 4.2). A description of how to navigate to the

basic display is provided in Section 4.3.3.

Turn the dial on the right until the cursor

appears in front of the target value (room target
temperature) of the heating circuit (HC1).

Click the right-hand dial.

The input field for the target value is inversely displayed.

Turn the right-hand dial.

The value for the room temperature changes by 0.5 °C
for each index turn of the dial.

Click the right-hand dial once the

required value for the room target temperature
has been reached.

The new value is applied. The display changes from
inverse back to normal.

This new value applies to the control for a specific
period, depending on the operating mode selected;
als

o see Section 4.4.

4.3.3 Operation in the default display

In the simplified basic display (Fig. 4.8) in the central
area the operating mode for the heating circuit and the
internal temperature are displayed.
The default display also provides you with the option of
changing the two most important parameters of your
heating system quickly and comfortably:

- B

y turning the left-hand dial you change the operating

mode (automatic, manual, off).

- B

y turning the right-hand dial you can change between
the actual room temperature and the set room
temperature.

Th. 12.01.06
11:46

Auto 19.0 °C

VRT 392f

Fig. 4.8 Default display (example)

You can navigate from the default display to the
next screen by clicking one or both dials (see Fig. 4.2).

If the controller is not operated for more than one
minute, the display changes to the default display.

Changing the operating mode in the default display

Operating
mode

Meaning

Auto(matic) The heating circuit is controlled with reference

to the specified room target temperature, the
time programme and other parameters, e.g.
night set back temp.
S

ome of these parameters are set by your

expert technician.

Manual T

he control of the appliance depends upon the

set room temperature.

OFF T

he heating circuit is switched off. The room
temperature is not displayed and cannot be
changed.
Frost protection (room set target
temperature = 5 °C) is guaranteed.

Table 4.3 Operating modes of the heating circuit

Operation 4

Operating manual VRT 392f 0020044239_0112

This is how to do it:

Turn the left-hand dial.

The operating mode is highlighted.
After a delay of one second, you can select the
operating mode.

Continue to turn the left-hand dial until the

desired operating mode is displayed.

The selected operating mode is accepted after a delay of
two seconds. The display changes from inverse back to
normal.

Th. 12.01.06
11:46

Manual

19.0 °C

> Change operating mode

Fig. 4.9 Changing the operating mode in the default display

Changing the room temperature in the default display

The control of the heating unit depends upon the set
room target temperature. The control system ensures
that the set room temperature is reached rapidly and is
retained at this level.

Turn the right-hand dial.

Instead of the room temperature, the current set room
temperature is highlighted. After a delay of one second
you can select the new room target temperature:

Turn the right-hand dial further until the desired

room temperature appears.

The selected room target temperature is applied after
a

delay of two seconds. The representation once again
changes from inverse to normal and shows the internal
temperature.

Th. 12.01.06
11:46

Auto

20.5 °C

> change room temperature

Fig. 4.10 Changing the room temperature in the basic display

This new value applies to the control for a specific
period, depending on the operating mode selected; also
see Section 4.4.

4.4 Changing the target room temperature

If you change a target value - either the room target
temperature or the target hot water - in the basic
display or in the default display, the new value overrides
the programmed temperatures.

When in „Manual“ mode, the control uses the temporary
temperatures until either the operation mode or the
temperature is changed.

When in „automatic“ mode, the control uses the
temporary temperature until the next time window
starts (if you have changed the set target value outside
a time window) or until the end of the current time
window (if you have changed the set target value within
the time window); see Fig. 4.11.

4 Operation

13Operating manual VRT 392f 0020044239_01

08:00 12:00

15 °

20 °

2

5 °

Room temperature

Time

Period

08:00 12:00

15 °

20 °

25 °

Time

Period

2 3

4

1

S

et back

temperature

Room temperature

Fig. 4.11 Duration of validity of target value changes

(here: Target room temperature)

The upper diagram in Fig. 4.11 shows a programmed time
window (see Section 4.7.1) and corresponding room
target temperature (21 °C).

In the lower diagram, at (1) the value of the room
t

emperature is changed (20 °C). The control system
uses this value until the start of the time window.
From here (2) the control system uses the room
t

emperature of the time window (21 °C).
At (3) the value of the room temperature is changed
(17

°C).
The control system uses this value up to the end of the
time window (4).
Onc

e the time window has elapsed, the system is
controlled with reference to the set-back temperature
(15 °C).

h

Note

The characteristic described also applies to the
same extent for the target hot water.

4.5 Operation level for the operator,
oper

ation level for the expert technician

The VRT 392f is equipped with two operation levels.
Each level contains several screens in which the various
parameters can be displayed, adjusted or changed.

– Oper

ation level for the operator
Used to display and set/change the basic parameters.
The setting/changing of parameters can be carried out
by the user without any special previous knowledge
and during normal operation.

– Oper

ation level for the expert technician
Used exclusively by the expert technician to display
and set/change specific parameters.

4.6 Screens at the operation level for the
operator

The screens at the operation level for the operator are
arranged according to the sequence shown in Table 4.4
below.
This table shows you which parameters you can adjust
and change.
Examples of this are given in Section 4.7 and in the
following sections.

This is the way you get from the simplified basic display
to the first display screen "basic data" of the operator
level:

Click one or both dials.

You get to the basic display.

Turn the left-hand dial by one or two points in the

clockwise direction.

Basic data

1

Date 21. 06. 06
Day We
Time 12 : 00 o'clock

Summer/Winter changeover Auto

> select day

Fig. 4.12 Screen "basic data"

(example: selecting the day of the week)

By turning the left-hand dial further you will scroll from
one screen to the next.
If accessory components are installed and are controlled
via the VRT 392f, additional screens apart from those
listed in Table 4.4 can be displayed, e.g.

3 or 6.

Operation 4

Operating manual VRT 392f 0020044239_0114

Screen Title

screen

Adjustable
operating values
(only display = A)

Remarks Unit Min.

value

Max.
value

Increment/
Selection
option

Default
value

1

Basic data Dat

e
Weekday
Time of the day

Select Day, Month and
Year separately;
Select Hour and
Minutes separately

Summer/Winter
changeover

Auto, Off Off

2

HC1
T

ime programme

Weekday/Block Select a weekday or

a block of days
(e. g. Mo-Fr)

1 Start/End Time of
the day
2
3

T

here are three time
periods available per
day or block of days

Hours/
Minutes

10 min

Temperature each
time period

For each time period,
an individual room
temperature can be
determined

°C 5 3

0 0,5 20

4

Hot water time
programme

Weekday/Block Select a weekday or

a

block of days

(e. g. Mo-Fr)

1 Start/End Time of
the day
2
3

T

here are three time
periods available per
day or block of days

Hours/
Minutes

10 min

5

Circulation pump
time programmes

Weekday/Block Select a weekday or

a

block of days

(e. g. Mo-Fr)

1 Start/End Time of
the day
2
3

T

here are three time
periods available per
day or block of days

Hours/
Minutes

10 min

7

Holiday
programming for
the total system

Holiday period Start Day, Month, Year

End

Day, Month, Year

Holiday set target
value heating

Room temperature for
the holiday time period

°C 5 3

0 0,5 10

8

HC1
p

arameters

Set-back
temperature

A set-back temperature
can be specified for the
periods between the
time windows.

°C 5 30 0,5 15

10

Hot water
parameters

Hot water target set
temperature

Target temperature for
water heating

°C 3

5 70 1,0 60

14

Changing the
name

He

ating circuit 1 Any name having up to

8 characters can be
entered

Heating
circuit 1

Hot water Hot

water

15

Release code level Code number Access to the level for

the installer only by
entering the saved
code number

1000

T

able 4.4 Screens at the operation level for the operator

4 Operation

15Operating manual VRT 392f 0020044239_01

4.7 Editing screens (examples)

4.7.1 Entering time programmes (example for
heating)

Using the time programmes you can allocate up to three
time windows per weekday, or block of days
(

e.g. Mo - Fr). In these time windows, the heating system
maintains the room temperature that you have selected,
the so-called comfort temperature. Outside the time
windows, the room temperature is set back. The
s

et-back temperature can also be changed.

h

Note

You can save energy without any loss in heating
comfort by finding the best possible match
between the time windows and your lifestyle.

The example below for heating circuit 1 shows
example for the heating circuit. You can define time
windows in a similar way for hot water generation and
for a circulation pump.

Turn the left-hand dial until screen 2

(HC1 time programme) is displayed.

HC 1
Time programme

2

Mo

1 06 : 00 - 10

: 40 21.5 °C

2 : -

:

3 : -

:

> Select day of week

Fig. 4.13 Screen 2 (example)

Turn the right-hand dial until the cursor is

positioned in front of the day or block of days
input field.

Click the right-hand dial.

The field is highlighted.

Select the required day or block of days by turning

the right-hand dial. The following options are

available:
– Mo, Tu, ... etc.
– Mo - Fr (Block)
– Sa - Su (Block)
– Mo - Su (Block)

Confirm the selection by clicking with the

right-hand dial.

1, 2 and 3 indicate the "time windows" which you can
programme for the selected weekday or block of days.
The VRT 392f provides heating in accordance with the
corresponding comfort temperature (e.g. 21.5 °C) within
a specific time window (e.g. from 06:00 am to
10:40

am).

Turn the right-hand dial until the cursor is

positioned in front of the input field for the
starting time of time window 1.

Click the right-hand dial.

The field is highlighted.

Set the start time by turning the right-hand dial.

Each step of the dial changes the time by 10 minutes.

Once the desired starting time is displayed,

confirm this by clicking the right-hand dial.

The end time for window 1 should be set similarly.

The comfort temperature for time window 1 is set as
follows:

Turn the right-hand dial until the cursor is

positioned in front of the input field for the
comfort temperature of time window 1.

Click the right-hand dial.

The field is highlighted.

Select the comfort temperature by turning the

right-hand dial (one step corresponds to a change
of 0.5 °C).

Once the desired comfort temperature is

displayed, confirm this by clicking
the right-hand dial.

h

Note

The VRT 392f assists the operator with the
programming of time windows:
T

he times can only be entered in chronological
order. The time period of a subsequent window
cannot overlap the previous one.
T

he time window must be between 0:00 and
24:00.
An

existing time window can be deleted as
follows: Se the start time and the end time of
a

time window to the same time.

Operation 4

Operating manual VRT 392f 0020044239_0116

h

Note

The same procedure as shown in the example
for heating circuit applies when inputting the
time programme for hot water generation or for
a circulation pump. A comfort temperature does
not need to be entered for hot water
generation and the circulation pump.

4.7.2 Programming holiday periods

For a longer period of time when you are not at home,
you can define a lower room temperature. This will save
heating energy. The VRT 392f ensures that the
living spaces are only heated with reference to the
specified temperature.
You can specify a room target temperature of 15 °C
if

you wish to go on holiday from 10 - 24 February. The
living rooms are only heated up to 15 °C during this
period.

Holida

y times can be set as follows:

Turn the left-hand dial until you reach screen 7

"Holiday programming for whole system".

Holiday programming
for whole system

7

Period

10. 02. 06 - . .

R

oom value: 10 °C

> set start day

Fig. 4.14 Screen 7 (example)

Turn the right-hand dial until the cursor is

positioned in front of the start date.

The field shows the text "Set starting day".

Click the right-hand dial.

The field is highlighted.

Turn the right-hand dial until the desired start day

is displayed.

Click the right-hand dial.

The day date is set. The display changes from inverse
back to normal.

Set the month and year of the start date in the

same way.

In the display field for explanation the text "Set starting
month“ or "Set starting year" appears.

Set the end date of the holiday period in the same

way.

Enter the room temperature as follows:

Turn the right-hand dial until the cursor is

positioned in front of the room target temperature
input field.

The explanation text "Select room temperature"
appears.

Click the right-hand dial.

The field is highlighted.

Turn the right-hand dial until the desired value is

displayed (values from 5 °C to 30 °C in half degree
steps are possible).

Click the right-hand dial.

The desired room set target temperature is set. The
display changes from inverse back to normal.

4.7.3 Heating settings

Here you can enter the set-back temperature. The
heating is controlled with reference to this temperature
outside the specified time window.

HC1
Parameter

8

Night set back temperature 15 . 0 °C

> set temperatur

Fig. 4.15 Display screen 8 (example)

The display shows "Select temperature" as an
explanation.

Click the right-hand dial.

The field is highlighted.

Turn the right-hand dial until the desired

value is displayed (values from 5 °C to 30 °C in
half degree steps are possible).

Click the right-hand dial.

The required set-back temperature is set. The display
changes from inverse back to normal.

4 Operation

16

17Operating manual VRT 392f 0020044239_01

4.7.4 Entering the parameters for hot water

generation

If the hot water for your home is generated by the
appliance the target temperature can be entered
via the VRT 392f.

Turn the left-hand dial until you reach Screen 10

"Hot water parameters".

The cursor

is positioned in front of the value for the

target temperature.

Click the right-hand dial.

The field is highlighted.

Turn the right-hand dial until the desired hot water

temperature is displayed (values from 35 °C to
7

0 ° C in one degree steps are possible).

Click the right-hand dial.

The required target temperature is set. The display
changes from inverse back to normal.

H

Caution!

Risk of being scalded by hot water!
When the target temperature is
abo

ve 60 °C, there is a risk of scalding at the
hot water taps. Small children and elderly
people can be at danger even at lower
temperatures.
Select the target temperature so that nobody is
at danger.

4.7.5 Changing the name of the system components

On screen

14 you can see which names of

components you can change.

Changing the name

14

HC1 : HC1

Ho

t water :

Bath 1

:

>

select

Fig. 4.16 Display screen 14 (example)

On the right-hand side of the colon you can enter a new
name (numbers 0-9, spaces, capital/small letters). This is
how to do it:

Turn the left-hand dial until you reach screen 14

"Change names".

Turn the right-hand dial until the cursor is

positioned in front of the character you wish to
change.

Click the right-hand dial.

The character is inversely displayed.

Turn the right-hand dial to select the correct letter

or number.

Click the right-hand dial.

The required character is adopted. The character is
displayed normally once again.

Turn the right-hand dial by one indexing position

in the clockwise direction.

The next character is marked by the cursor.

Click the right-hand dial.

The character is displayed inversely.

Turn the right-hand dial to select the correct letter

or number.

Continue in this way for the remaining characters

of the new name.

h

Note

Entire names or superfluous characters can be
deleted by entering a blank.

Operation 4

17

Operating manual VRT 392f 0020044239_0118

5 Status and error messages

Status and error messages are displayed in the second
row of the field for basic data.

Status messages

Holiday

Within a set holiday time period the heating is controlled
to the room set target temperature for this period.

Service + telephone number of the expert technician

Indicates maintenance for the heating system is
required.
In

addition, the telephone number of your expert

technician appears if he has programmed it in.

Dashes (--) instead of values are displayed at the
controller

When the dial is turned the values to be displayed must
first be called up by the radio receiver unit. Until these
values are obtained only dashes instead of values will be
displayed (--). This generally takes up to two seconds.
Depending on the ambient conditions, it may take up to
15 minutes until the current data are called up by the
radio receiver unit and are subsequently displayed.
If dashes (--) are displayed continuously, consult your
expert technician.

Error messages

Error boiler

In

forms you about an error in the appliance.

Contact your expert technician.

Com. Error boiler

The connection between the radio receiver unit and
appliance is faulty.

Contact your expert technician.

No radio communication
R

adio communication between the VRT 392f and radio

receiver unit is faulty.

Contact your expert technician.

Change battery
T

he batteries at the controller are almost empty.

Change all batteries at the controller.

This is how to do it:

Pull the controller (1) off the wall socket (2). This

can be done by pushing a screwdriver into the two
retaining straps (see Fig. 5.1 arrows).

1

2

Fig. 5.1 Removing the VRT 392f

Key

1 Controller VRT 392f
2 Wall socket

Mount four new batteries of the same type for the

controller on the reverse side of the controller
PCB.

Fig. 5.2 Inserting the batteries

5 Status and error messages

19Operating manual VRT 392f 0020044239_01

h

Note

Ensure correct polarity of the batteries
(

see Fig. 5.2).

Alw

ays change all batteries at the same time.

Only

use the following battery type:
Alkaline AA/LR6 Battery 1.5 V.
Do

not use rechargeable batteries.

Depending

on use, the batteries last between

approx. 1 and 1.5 years.

Carefully push the controller onto the wall

socket (2) until it snaps into place.

T

he display remains dark

The display remains dark although you turn or click one
of the dials.

Change all batteries at the controller.

A description of how to do this is provided in this
Section under "Change battery")

h

Note

The display is normally switched off to save
power. This increases the service life of the
batteries.
T

he display and lighting are activated as soon
as you turn or click one of the dials. If the
appliance is not used for more than one minute
the basic display returns and switches off after
approx. 10 minutes.

Status and fault messages of the radio receiver unit

gr

een LED on: everything OK

red LED on: error (no communication with

appliance or controller)
red LED flashes briefly: radio transmission
green LED flashes: the teach-in process was started

via a button (only relevant for

parts replacement)

Status and error messages 5

For the expert technician

Installation instructions

VRT 392f

VRT 392f

Room thermostat

1 Notes on the documentation .........................2

1.1 S

torage of the documents ....................................2

1.2 S

ymbols used ...........................................................2

1.3 V

alidity of the instructions ...................................2

2 De

scription of the device ............................... 3

2.1 Iden

tification plate ..................................................3

2.2 CE

label ......................................................................3

2.3 In

tended use .............................................................3

3 S

afety instructions and regulations ............4

3.1 S

afety instructions ..................................................4

3.2 R

egulations ...............................................................4

3.3 General requirements ............................................4

3

.3.1 Preliminary remarks for room sealed

applianc

es .................................................................4

3

.3.2 Related documents .................................................4

4 As

sembly .........................................................5

4.1 S

cope of delivery .....................................................5

4.2 A

ccessories ...............................................................5

4.3 Ins

tallation location ................................................5

4.4 Ins

talling the radio receiver unit in the

appliance ...................................................................5

4

.4.1 Moun

ting the radio receiver unit on the wall ..6

4.5 Moun

ting the control on the wall ........................6

5 Ins

tallation ....................................................... 7

5.1 Electric

al installation for the wall-mounted

wireless receiver unit .............................................7

6 Initial

commissioning .....................................8

6.1 Ins

tallation assistant ..............................................8

6.2 Oper

ation level for expert technician ................9

6.3 R

esetting the parameters to the factory

setting ........................................................................9

6.

4 Hando

ver to the operator .....................................11

6.5 F

aults ..........................................................................11

6.6 Special

features .......................................................11

7 F

actory customer service, manufacturer's

guarantee .........................................................11

8 R

ecycling and disposal ...................................11

9 T

echnical data ............................................... 12

Glossary .....................................................................13

Contents

Installation instructions VRT 392f 0020044239_012

1 Notes on the documentation

The following notes are intended to help you throughout
the entire documentation. Further documents apply in
combination with this installation manual.
We accept no liability for any damage caused by failure
to observe these instructions.

Other applicable documents
– Operating manual for the Vaillant room thermostat

VRT 392f

– The operating and installation instructions for your

heating system

– All instructions for the accessories

1.1 Storage of the documents

Please pass on this installation manual and all other
valid documents and auxiliary equipment to the owner
of the installation. He will then determine the method of
storage. The documents must be made available upon
request.

1.2 Symbols used

Please observe the safety instructions in this manual for
the installation of the appliance!

e

Danger!

Immediate risk of serious injury or death!

e

Danger!

Danger of death by electric shock!

H

Attention!

Danger of burning and scalding!

a

Caution!

Potentially dangerous situation for the product
and environment!

h

Note

Useful information and tips.

Symbol for a necessary task

1.3 Validity of the instructions

These installation instructions apply exclusively for
appliances with the following part numbers:

0020028510, 0020028511, 0020028512, 0020028513,
0020028514

The part number of your appliance can be taken from
the identification plate.

1 Notes on the documentation

3Installation instructions VRT 392f 0020044239_01

2 Description of the device

The VRT 392f is a programmable room thermostat for
the heating and control of hot water generation in
conjunction with a Vaillant appliance (eBUS-compatible).
In addition, the VRT 392f can be used to control the
following accessory components:

– Circulation pump for water heating in combination

with a VR 40 multi-functional module

– Conventional hot water storage

–

Vaillant layer type storage tank actoSTOR

With the VRT 392f power is supplied via 4 batteries
(Alkaline AA/LR6 1.5V).
With the VRT 392f data is exchanged via a radio link to
the radio receiver unit.

Power is supplied via an eBUS interface which also
facilitates the exchange of data between the radio
receiver unit and the appliance.

The VRT 392f is equipped for operation with the Vaillant
diagnosis software vrDIALOG 810/2 and the Vaillant
Internet Communication System vrnetDIALOG , i.e. for
remote diagnosis and adjustment.

2

3

1

Fig. 2.1 System schematic

Key

1 VRT 392f
2 Heating unit
3 Radio receiver unit

2.1 Identification plate

The identification plate can be found on the back of the
controller electronics (PCB).

2.2 CE label

The CE label provides evidence that the Vaillant room
thermostat VRT 392f satisfies the basic requirements
contained in the following directives:
– Electromagnetic compatibility directive

(

Guideline 89/336/EEC)
– Low voltage directive (Guideline 2006/95/EEC)
– Directive on Radio Equipment and Telecommunications

Terminal Equipment (R&TTE Directive 1995/5/EEC)

– Directive on Electromagnetic compatibility and Radio

spectrum Matters (ERM) (Directive ETSI EN 300220-2)

2.3 Intended use

The room thermostats VRT 392f are built using state-of­the-art technology and according to the recognised
safety regulations.
However, in the event of improper use or use not as
intended, impairment of the equipment and other items
can arise.
The room thermostat VRT 392f serves to control
a

heating installation with or without hot water
generation/circulation pump in conjunction with
a

Vaillant appliance and eBUS interface.

Before you install the appliance, check the intended
location for possible functional impairment of the radio
signal path by electrical devices or building components.
If interference in the signal path is likely an alternative
installation location must be found.

Operation with the following accessories is permissible:

– Circulation pump for water heating in combination

with a VR 40 multi-functional module
– Conventional hot water cylinder
– Vaillant layer type storage tank actoSTOR

Any other use or extended use is considered to be use
other than intended. The manufacturer or supplier is not
liable for any resulting damage. The owner alone bears
any risk.
Intended use also includes observance of the Operating
and Installation Manual as well as all other applicable
doc

uments.

Description of the device 2

Installation instructions VRT 392f 0020044239_014

3 Safety instructions and regulations

The VRT 392f must be installed by a recognised expert
technician company that is responsible for ensuring that
existing standards and regulations are observed. We will
not accept liability for damage arising from non­observance of this manual.

3.1 Safety instructions

e

Danger!

Voltage carrying connections!
When working in the control cabinet of the
appliance there is a danger to life by electric
shock.
S

witch the power supply off before working in
the control cabinet and secure against
r

e-connection.

Open

the control cabinet only when the

appliance is potential-free.

3.2 Regulations

During the electrical installation, observe the regulations
of your local power supplier.

Use commercially available cables for the wiring.
Minimum cross-section for the Bus line: 0.75 mm

2

The following maximum cable lengths must not be
exceeded:

– eBUS line 300 m

In locations where eBUS lines run parallel with 230 V
lines over a distance in excess of 10 m, they must be run
separately.
Free terminals at the appliances must not be used as
support terminals for additional wiring.

The controller and radio receiver unit may only be
installed in dry rooms.

Regulations for Switzerland:

In Switzerland the regulations of the Swiss
Electrotechnical Association (SEV) must be observed
when installing the appliance.

Regulations for Belgium

In Belgium the applicable ARAB regulations must be
observed when installing the appliance.

3.3 General requirements

3.3.1 Preliminary remarks for room sealed
appliances

This appliance should only be installed in conjunction
with either a Vaillant flue system or an alternative
approved system (details of flue approval categories can
be found in the technical section of the installation
manual).

Ins

tall the flue system as detailed in the separate flue

installation instructions supplied with this boiler.

3.3.2 Related documents

The installation of the boiler must be in accordance with
the relevant requirements of Gas Safety (Installation and
Use) Regulations 1998, Health and Safety Document
No

. 635 (The Electricity at Work Regulations 1989),

BS7

671 (IEE Wiring Regulations) and the Water Supply
(Water Fitting) Regulations 1999, or The Water Bylaws
2000 (Scotland). It should also be in accordance with
the relevant requirements of the Local Authority,
Building Regulations, The Building Regulations
(Scotland), The Building Regulations (Northern Ireland)
and the relevant recommendations of the following
British Standards:
BS 6700: Services supplying water for domestic use
within buildings and their curtilages.
BS 6798: Specification for installation of gas fired
boilers not exceeding 60 kW input.
BS 6891: Specification for installation of low pressure
gas pipework up to 28 mm (R1) in domestic premises
(2nd family gas).
BS 7593: Treatment of water in domestic hot water
central heating systems.
Institute of Gas Engineers Publication IGE/UP/7/1998:
”Guide for gas installations in timber framed housing”
BS. 5482 Pt. 1 Domestic butane and propane gas burning
installations.
IGE/UP1 Soundness testing and purging of industrial and
commercial gas installation.
IGE/UP2 Gas installation pipework, boosters and
compressors on industrial and commercial premises.
IGE/UP10 Installation of gas appliances in industrial and
commercial premises.
BS. 6644 Installation of gas fired hot water boilers of
rated inputs between 60 kW and 2 MW (2nd and 3rd
family gases).
BS. 5449 Forced circulation hot water central heating
systems for domestic premises. Note: only up to 45 kW.
BS. 6880 Low temperature hot water heating systems of
output greater than 45 kW.
Part 1 Fundamental and design considerations.
Part 2 Selection of equipment.
Part 3 Installation, commissioning and maintenance.
BS. 4814 Specification for: Expansion vessels using an
internal diaphragm, for sealed hot water heating
systems.
BS. 5440 Installation and maintenance of flues and
ventilation for gas appliances of rated input not
exceeding 70 kW net (1st, 2nd and 3rd family gases).
Part 1 Specification for installation of flues.
Part 2 Specification for installation and maintenance

of ventilation for gas appliances.

All wiring must be in accordance with Building
Regulations Part P and BS 7671 (IEE Wiring Regulations),
and must be carried out by a suitably qualified person.

3 Safety instructions and regulations

5Installation instructions VRT 392f 0020044239_01

4 Assembly

The VRT 392f must be installed in the living area against
a wall. The connection with the appliance is made using
a radio link.

4.1 Scope of delivery

Using Table 4.1, check the scope of delivery.

Pos. number Component

1 1 R

oom thermostat VRT 392f

2 1 Fixing

equipment

3 1 R

adio receiver unit

4 1 W

all socket for radio receiver unit

5 1 B

attery set (4x AA)

6 1 Oper

ating and Installation instructions

Table 4.1 Scope of delivery VRT 392f

4.2 Accessories

You can use the following add-on accessories with the
VRT 392f:

Multi-functional module VR 40

The VRT 392f can control a circulation pump via the
VR

40 multi-functional module.

h

Note

Observe the manuals for the accessory
components if the VRT 392f is used with
accessories.

4.3 Installation location

Only install the controller and the radio receiver

unit in dry rooms.

The controller should be fitted so as to ensure

problem-free measurement of the room
temperature; e.g. on a room wall of the main living
room at a height of approx. 1.5 m.

Check the mounting locations prior to installing

the controller and radio receiver unit regarding
possible functional impairment of the radio signal
path due to electrical appliances or building
features. If interference in the signal path is likely
an alternative installation location must be found.

Inform the operator that all radiator valves in the

room where the VRT 392f is mounted must be
fully opened.

4.4 Installing the radio receiver unit in the

appliance

e

Danger!

Voltage carrying connections!
W

hen working in the control cabinet of the
appliance there is a danger to life by electric
shock.
S

witch the power supply off before working in
the control cabinet and secure against
r

e-connection.

Open

the control cabinet only when the

appliance is potential-free.

This is how to do it:

Switch off the appliance.
Turn off the power supply to the appliance and

secure the power supply to prevent it from being
unintentionally switched back on.

Remove the front panel on the appliance and

remove the cover plate on the control cabinet.

Push the radio receiver unit into the plug

connection provided in the control cabinet using
your plug connector.

Re-connect the power supply to the appliance.
Switch the appliance on.
Check whether the green LED lights up at the

radio receiver unit after a short period of time.

Close the front panel of the appliance.

Assembly 4

Installation instructions VRT 392f 0020044239_016

4.4.1 Mounting the radio receiver unit on the wall

h

Note

It is only necessary to mount the radio receiver
unit on the wall if the position of the radio
receiver unit needs to be changed in order to
establish reliable radio communication with the
controller.

1

3

2

4

5

Fig. 4.1 Installation of the radio receiver unit

Key

1 Radio receiver unit
2 Wall socket
3 Mounting apertures
4 Strain relief
5 Terminal strip

Take the wall socket for the radio receiver unit.
Mark the position on the wall.
Drill two holes 6 mm diameter to suit the fixing

apertures (3).
Insert the plugs supplied.
Use the screws supplied to fix the wall socket.
The electrical installation is carried out as

described in Section 5.1.
Push the radio receiver unit carefully on to the

wall socket until it snaps into place. The plug

connector on the rear of the radio receiver unit

must fit in the plug connector provided on the wall

socket.

4.5 Mounting the control on the wall

During initial operation of the appliance in the chosen
installation location check that the radio signal path is
not adversely affected by electrical devices or building
components. If the signal path is impaired an alternative
installation location must be found.

1

2

3

Fig. 4.2 Installation of the VRT 392f

1 Room thermostat VRT 392f
2 Wall socket
3 Mounting apertures

This is how to do it:

Pull the controller (1) off the wall socket (2). This

can be done by pushing a screwdriver into the two

retaining straps (see Fig. 4.2 arrows).
Mark the position on the wall.
Drill two holes 6 mm diameter to suit the fixing

apertures (3).
Insert the plugs supplied.
Guide the eBUS cable through one of the cable

ducts.
Use the screws supplied to fix the wall socket.
Mount four new batteries of the same type for the

controller on the reverse side of the controller

PCB.

4 Assembly

7Installation instructions VRT 392f 0020044239_01

Fig. 4.3 Inserting the batteries

h

Note

Ensure correct polarity of the batteries
(

see Fig. 4.3).

Alw

ays change all batteries at the same time.

Only

use the following battery type:
Alkaline AA/LR6 Battery 1.5 V.
Do

not use rechargeable batteries.

Depending

on use, the batteries last between

approx. 1 and 1.5 years.

Push the controller carefully on to the wall socket

until it snaps into place.

Check the quality of the radio signal path as

described in Section 6.1.

5 Installation

e

Danger!

Voltage carrying connections!
When working in the control cabinet of the
appliance there is a danger to life by electric
shock.
S

witch the power supply off before working in
the control cabinet and secure against
r

e-connection.

Open

the control cabinet only when the

appliance is potential-free.

If the wireless receiver unit is integrated into the
appliance, the electrical connection is established
through contact between the plug connector of the
controller and the corresponding plug connection in the
appliance.

5.1 Electrical installation for the wall-mounted
wireless receiver unit

h

Note

It is only necessary to mount the radio receiver
unit on the wall if a more suitable position for
the radio receiver unit needs to be found in
order to ensure reliable radio communication
with the controller.

The power supply to the appliance must be disconnected
and prevented from being unintentionally switched back
on.

1

2

Fig. 5.1 Electrical connection for wireless receiver unit

Key

1 Terminal strip of the wall socket for the radio receiver unit
2 Terminal rail appliance

h

Note

The jumper between terminals 3 and 4
(

see Fig. 5.1) must not be removed.

W

hen connecting the eBUS cable there is no
need to observe the correct polarity.
Communication is not adversely affected by
swapping the two connections.

This is how to do it:

Connect the eBUS cable to the terminal strip (1) of

the wall socket for the radio receiver unit.

Install the strain relief (4, Fig. 4.1).
Connect the eBUS cable to the terminal strip of

the appliance (2).

Assembly 4

Installation 5

Installation instructions VRT 392f 0020044239_018

6 Initial commissioning

Initial condition:
The controller VRT 392f and the radio receiver unit are
installed correctly.
T

he appliance is switched on and ready for operation.

h

Note

To ensure the most effective control by the
VR

T 392f the position of both rotary knobs on
the appliance must be observed:
– T

op rotary knob (outlet/storage temperature
of hot water) at maximum setting (limit stop
in clockwise direction).

– B

ottom rotary knob (feed temperature of
heating) at maximum required feed
temperature.

The operating concept of the VRT 392 is described in
Section 4.3 of the operating manual.

6.1 Installation assistant

When commissioning for the first time you will be
supported by the installation assistant. The installation
assistant recognises the connected components of the
heating system.
Up to six pages are available in the display (A1 to A6)
depending on the configuration of the heating system.
The most important parameters of the heating system
can be entered via the installation assistant.

The installation assistant starts with display screen A1,
language selection.

Select the language in accordance with the

operator control concept (operating instructions
Section 4.3).

Turn the left-hand dial clockwise by one indexing

position to display additional screen A1.

Installation assistant
RF Link

A1

C

ontroller 10

T

each in

OFF

>Select mode

Fig. 6.1 Installation assistant, screen A1

You can read off or check the quality of the radio signal
path between the controller or wireless outdoor sensor
and radio receiver unit here.

The quality of the wireless data communication for
outdoor sensors and controllers is represented by a
number between 0 and 10.
0:

no reception

1:

poor quality

10:

excellent quality

h

Note

If this value is less than 3 you will have to
change the installation location of the
controller or radio receiver unit. A description
of the installation of the radio receiver unit on
the wall is provided in Section 4.4.1.

Note

T

he range of radio transmission within buildings
is largely dependent on the local conditions
(

e.g. the nature of the building). This means
that a range of 25 m within the building cannot
always be guaranteed. A range of more than
100 m can be achieved outside enclosed spaces
(free field).

The quality displayed is updated automatically as soon
as changes are made.

h

Note

The "teach-in" display is only required for
teaching in components in the radio network
following the replacement of parts.

Turn the left-hand dial clockwise by one indexing

position in order to display page A2.

Installation assistant
System configuration

A 2

Cylinder active

> select

Fig. 6.2 Installation assistant screen A2

The configuration of the heating system is shown in
display screen A2.
For the cylinder (storage), you can choose between
active and inactive.

6 Initial commissioning

9Installation instructions VRT 392f 0020044239_01

If you wish to leave the installation assistant:

Turn the left-hand dial in a clockwise direction to

navigate to screen A6.

Confirm the end of the installation with "Yes".

h

Note

If you confirmed completion of the installation
with "Yes" you can only reach the
installation assistant via the code-protected
expert technician level.

After the installation is concluded, you will automatically
reach the simplified basic display.

6.2 Operation level for expert technician

Specific operating data can be displayed and
adjusted/changed at the expert technician
operation level. This means that an optimum match can
be found between the controller and the heating system.

The level for the expert technician consists of the
display screens C1 to C26 and the display screens A1, A2
and A6 of the installation assistant described above.
The screens C1 to C26 in the VRT 392 appear in the
sequence shown in Table 6.1 below.
This table shows you which parameters you can adjust
and change.

Depending upon the configuration selected in the
installation assistant (screen A2), parameters and
screens which are not required are hidden.

Setting/changes are made in accordance
with the operator control concept as
described in Section 4.3 of the operating manual.

To navigate from the default display to the expert
technician level proceed as follows:

Click one or both dials to navigate to the

basic display from the default display.

Turn the left-hand dial clockwise until you get to

screen

15.

Enter the code.

Code layer
enable

15

Code number

0 0 0 0

> Enter code

Fig. 6.3 Screen 15

The factory setting of the code is 1 0 0 0.
You can change the code number on screen C24.

After entering the correct code you automatically reach
screen C1.

6.3 Resetting the parameters to the factory
setting

The works as-delivered condition of the VRT 392f can be
restored as follows:

Push both dials simultaneously for 10 seconds.

This takes you to the factory settings screen.

Th. 12.01.06
11:46

F

actory setting
Cancel No
T

ime programme

No

Everything No

Fig. 6.4 Factory settings screen

Menu point Input Result

Aborting Yes The set parameters remain effective

Time
programme

Yes

All programmed time windows are
deleted

Everything Yes

All set parameters are reset back to
the factory setting

Table 6.1 Menu selection of the screen factory setting

Once the input is confirmed the display reverts to the
basic display or default display.

Initial commissioning 6

Installation instructions VRT 392f 0020044239_0110

Screen Title

screen

Adjustable
operating values
(only display = A)

Remarks Unit Min.

value

Max.
value

Increment Default

value

C1 HC1

In

formation

Target flow
temperature (A)

Flow temperature
target value

°C 1

C4 Ho

t water

information

Current target hot
water (A)

Target temperature of
hot water in cylinder

°C 1

Cylinder sensor 1 (A) Actual temperature of

hot water in cylinder

°C 1

Cir

culation pump

status (A)

On, Off

C9 HC1

p

arameters

Set-back
temperature

A set-back temperature
can be specified for the
periods between the
time windows.

°C 5 30 1 15

Control strategy Determines the type of

room temperature
control
T

wo point represents
on/off control;
Similar to a modulating
control.

Two-point,
analogue

Two-point

Route matching For optimum matching

to the size of the room
or radiator
arrangement.
(P

ositive values: slower
switching response of
controller;
negative values: faster
switching response of
controller).

-5 +5 1 0

C16 Ho

t water

parameters

Legionella protect
day

Day or block of days;
The cylinder is heated
up to 70°C for an hour

OFF, MO, TU,
WE, TH, FR,
SA, SU,
MO-SU

OFF

Start time of
Legionella
protection

0:00 24:00 0:10 4:00

C24 Service T

elephone number Input of telephone

number for the
purposes of servicing

Changing the code
number

0000 9999 e

ach 1 1000

Maintenance date Day/Month/Year

adjustable

C25 Tools Room temperature

correction

Adjustment of room
temperature sensor

R -

3 3 0,5 0

Display contrast 0 15 1 6

C2

6 Software versions Software version

per module (A)

Display of version
number

T

able 6.2 Screens in the expert technician operation level

10

6 Initial commissioning

11Installation instructions VRT 392f 0020044239_01

6.4 Handover to the operator

The operator of the VRT 392f must receive instruction
on handling and functions of the controller.

Hand the instruction manuals and documents for

the appliance over to the operator for safe
keeping.

Inform the operator what the article number is.

Point out to the operator that the manual must be

kept near to the VRT 392f.

Go through the operating instructions with the

operator and answer any questions if necessary.

6.5 Faults

h

Note

If the controller fails the entire system
continues to operate via the radio receiver unit
on the basis of a fixed target feed temperature
of 50 °C.
T

he room temperature control and the set time

window are overridden.

6.6 Special features

Battery economy mode

h

Note

The display is normally switched off to save
power. This increases the service life of the
batteries.
T

he display and the lighting are activated as
soon as you turn or click one of the dials. If the
appliance is not used for more than one minute
the basic display returns and switches off after
approx. 10 minutes.

Status and fault messages to the radio receiver unit

gr

een LED on: everything OK

red LED on: error (no communication with

appliance or controller)

red LED flashes
briefly:

r

adio transmission

green LED flashes: the teach-in process was started via

a button (only relevant for parts
replacement)

7 Factory customer service,

manufacturer's guarantee

Vaillant Service

To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance
A

greement. Please contact Vaillant Service Solutions

(0870 6060 777) for further details.

Vaillant warranty

We only grant a Vaillant manufacturers warranty if
a

suitably qualified engineer has installed the system in
accordance with Vaillant instructions. The system owner
will be granted a warranty in accordance with the
Vaillant terms and conditions. All requests for work
during the guarantee period must be made to Vaillant
Service Solutions (0870 6060 777).

8 Recycling and disposal

Both your VRT 392f and its packaging are primarily
made of recyclable raw materials.

Appliance

The VRT 392f and its accessories must not be disposed
of in the household waste. Make sure the old device and
any existing accessories are disposed of properly.

Packaging

The disposal of the transport packaging is undertaken
by the installer who installed the unit.

Batteries

Batteries must not be disposed of in the household
waste. Ensure that the batteries are disposed of
properly.

Initial commissioning 6

Factory customer service, manufacturer's guarantee 7

Recycling and disposal 8

Installation instructions VRT 392f 0020044239_0112

9 Technical data

Parameter VRT 392f

Operating voltage Umax 4x1.5 V (AA)

Service life of battery (alkaline) approx. 1.5 years

Level of protection IP 20

Protection class III

Maximum

permissible ambient temperature 50 °C

T

ransmission frequency 868 MHZ

Transmitting power < 10 mW

Range:

in free field > 100 m

in building approx. 25 m

Height mm 97

Width mm 146

Dep

th mm 45

Table 9.1 Technical data VRT 392f

Parameter Radio receiver

unit

Operating voltage Umax max. 24 V

Current consumption < 60 mA

Level of protection IP 20

Protection class III

Maximum

permissible ambient temperature 50 °C

T

ransmission frequency 868 MHZ

Transmitting power < 10 mW

Range:

in free field > 100 m

in building approx. 25 m

Height mm 97

Width mm 146

Dep

th mm 45

Table 9.2 Technical data, radio receiver unit

h

Note

The range of radio transmission within buildings
is largely dependent on the local conditions
(

e.g. the nature of the building). This means
that a range of 25 m within the building cannot
always be guaranteed. A range of more than
100 m can be achieved outside enclosed spaces
(free field).

9 Technical data

13Installation instructions VRT 392f 0020044239_01

Glossary

Set-back temperature

The set-back temperature is the reduced interior
temperature maintained by your heating system outside
of the programmed time window.

Operation level for operator

Used to display and set/change the basic parameters.
The setting/changing of parameters can be carried out
by the user without any special previous knowledge and
during normal operation. The heating system can
continuously adapt to the requirements of the operator
by making the corresponding basic parameter settings.

Operation level for expert technician

Used to display and set/change specific parameters. This
operation level is reserved for the expert technician and
is therefore password protected.

Operating mode

The operating modes "Auto" (automatic), "Manual“ and
"OFF" exist. You can use the operating modes to specify
how you wish your room heating or water heating to be
controlled (see operating instructions, Section 4.3.2,
Table 4.2).

Heating circuit (HC1)

HC1 indicates heating circuit 1. This refers to the heating
of your heating system. You can use a special
designation instead of HC1 (see operating instructions
Section 4.7.5).

Heating flow temperature

Your appliance heats water which is pumped through
your heating system. The temperature of this hot water
as it leaves the appliance is referred to as the flow
temperature.

Interior temperature

The interior temperature, also referred to as room
temperature, is the actual current temperature in your
apartment.

Parameter

Parameters are the properties of your heating system.
You can influence these properties by altering the value
of a parameter, such as, e.g. reducing the value of the
parameter "Night set back temp" from 15 °C to 12 °C.

Room target temperature

The room target temperature is the temperature that
should prevail in your apartment and is specified at the
controller. Your appliance supplies heat until the interior
temperature matches the room target temperature.
When entering time programmes the room target
temperature is also referred to as the comfort
temperature.

Set values

The target values are your desired values that you can
specify via the controller; e.g. the room target
temperature or the target temperature for hot water
generation.

Summer/Winter changeover

Under the menu point "Mode selection" in screen

1
"Basic data" you can determine whether the changeover
from summer to winter and vice-versa should

take place
automatically (Selection: Auto).
The factory setting (as-supplied condition) is for
automatic changeover not to take place (Selection: Off).

Flow temperature

See heating flow temperature.

Water heating

The water in the hot water cylinder is heated to the
selected target temperature by the appliance. If the
temperature in the hot water cylinder falls by a specific
amount the water is heated again until it reaches the
target temperature. Time windows for water heating
can be programmed.

Time window

Three time windows can be programmed per day for the
heating, water heating and circulation pump
(

see operating instructions Section 4.7.1).
A target value is allocated to each time window
programmed for the heating.
In the case of water heating the hot water target
temperature applies for all time windows (Screen

10
"Hot water parameters").
In the case of the circulation pump the time windows
determine the operating times.
In automatic mode the system is controlled is in
accordance with the specified values in the time
windows.

Circulation pump

Depending on the length of the pipe, there may be a
brief delay before hot water flows when the hot water
cock is opened. A circulation pump circulates hot water
via your hot water pipe. This means that hot water is
available instantly when the water cock is opened. Time
windows can be programmed for the circulation pump.

Appendix

Glossary

0020044239_01 GB 052010 – Subject to alterations