DeDietrich OpenTherm Service Manual

EN

Modulating room thermostat

Opentherm Modulating room
thermostat

Installation and
Service Manual

7616664-01

Contents

1 Preface ........................................................................................................2

1.1 General ..................................................................2

2 Location ......................................................................................................3

2.1 Position of the regulator ......................................3

2.2 Installation and connection .................................3

3 Commissioning ..........................................................................................5

3.1 Fitted control unit .................................................5

3.1.1 Control .....................................................................5

3.1.2 Default setting .........................................................5

4 Settings .......................................................................................................6

4.1 Changing the settings ..........................................6

4.1.1 Modifying the temperature ......................................6

4.1.2 Menu structure .......................................................6

4.2 User settings .........................................................7

4.2.1

User menu W ..........................................................7

4.3 Fitter menu ...........................................................7

4.3.1

Information menu Q ...............................................7

4.3.2

Installer menu ? ....................................................8

4.3.3

Counter menu \ ....................................................8

4.3.4

Service menu K ...............................................8

5 Messages ..................................................................................................10

5.1 Error messages ...................................................10

6 Technical specifications ..........................................................................11

6.1 Technical specifications ....................................11

1

31032014 - 7616664-01

1 Preface

1.1 General

The Opentherm Modulating room thermostat is a simple modulating
room thermostat based on the OpenTherm SmartPower protocol.
Certain De Dietrich boiler types offer other functions in addition to the
room thermostat function. These functions include setting
parameters. See the installation and service manual for the boiler.

This installation and service manual describes all the
functions of the Opentherm Modulating room thermostat.

WARNING

OpenTherm SmartPower is required for the backlight. In
boilers without OpenTherm , the Opentherm Modulating
room thermostat is functional but without backlight.

Opentherm Modulating room thermostat 1. Preface

31032014 - 7616664-01

2

2 Location

2.1 Position of the regulator

The controller works using room control. This means that the inside
temperature is used to control the central heating.

4 Install the regulator in the reference room (generally the living

room).

4 Do not locate the controller too close to heat sources (fireplace,

radiator, lamp, candles, direct sunlight etc), or in places where it
may be draughty.

2.2 Installation and connection

Before you can connect the controller, you must first:

1. Adjust the boiler so that it can be connected to a OpenTherm
controller. See the installation and service manual for the boiler.

2. Shut down the boiler.

3. Open the housing by pulling the front and the base plate apart.

4. Attach the base plate to the wall using the screws and plugs
supplied. Ensure that the OpenTherm connecting wires for the
boiler are poking through the hole in the base plate.

R000083-B

150

cm

R000078-A

R000058-D

Ø6 mm

2. Location

Opentherm Modulating room thermostat

3

31032014 - 7616664-01

5. Connect the controller to the OpenTherm connection of the boiler,
and to the OT connection of the controller. OpenTherm is not
sensitive to polarity. The wires are interchangeable.

6. Place the front panel back in the housing.

R000080-A

OT

On/off

OT

OT

R000081-A

Opentherm Modulating room thermostat 2. Location

31032014 - 7616664-01

4

3 Commissioning

3.1 Fitted control unit

3.1.1. Control

1

Display

2

Rotary and push button for setting the controller

The controller is menu-controlled, which means it is very simple to
operate. The controller has just 1 button.

4 The button is both a rotary button and a push button.

4 Turn it to scroll through menus or change values.

4 Press it to confirm choices (Such as menu

selections).

n

Meaning of the symbols on the display

Symbol

Meaning Symbol Meaning

T

ECO mode on

>

Back

e

Water pressure too low

Q

Information menu

c

Defect

W

User menu

?

Boiler service required

?

Installer menu

H

Current temperature

\

Counter menu

M

Set temperature

K

Service menu

D

Central heating function on

I

Burner on

N

Domestic hot water function on

3.1.2. Default setting

The controller works using room control (Central heating is controlled
on the basis of the inside temperature).

This is the default setting:

4 Set temperature 15℃

4 ECO AUTO

4 The most recent set temperature is saved

R000057-D

1

2

3. Commissioning Opentherm Modulating room thermostat

5

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4 Settings

4.1 Changing the settings

4.1.1. Modifying the temperature

1

Set temperature

2

Measured temperature

4 Turn the button to set the ambient temperature.

4 Press the button to confirm.

4.1.2. Menu structure

To access the menu, proceed as follows:

4 Press the rotary and push button for at least 3 sec.

4 Turn the button until you reach the required menu.

4 Press the button to confirm.

4 Amend the selected menu item.

4 Press the button to confirm.
4 Exit the menu by pressing >.

WARNING

The values to be read may differ depending on the
connected heating unit. See the installation and service
manual for the boiler.

R000077-A

1

2

R000064-C

3s

1x

Opentherm Modulating room thermostat 4. Settings

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6

4.2 User settings

4.2.1.

User menu W

Code Meaning Information Settings Factory

setting

em;

DHW standby
function

The ECO mode turns off the DHW standby
function. In combi boilers the waiting time
increases. Calorifiers are no longer kept warm.

Zvt; = Automatic position
0M = Start
0ff = Stop

Zvt;

tdh

Tap water
temperature

Setting the required tap water temperature, for
calorifiers with a temperature programme.

30 to 75 °C

60°C N

tmh

Maximum central
heating water
temperature

Setting the required central heating water
temperature.

0 to 100 °C

90°C D

hvp

Heating rate

Setting how fast or slow the controller
responds.

2 = Fastest
1 = Faster
0 = Normal
z1 = Slower
z2 = Slowest
z3 = Extra Slow

0

cdM

Cooling rate

Indicate how fast or slow the house cools
down. A well insulated house will cool down
slower.

2 = Fastest
1 = Faster
0 = Normal
z1 = Slower
z2 = Slowest

0

4.3 Fitter menu

4.3.1.

Information menu Q

This menu provides access to various kinds of information about the
boiler and any connected accessories.

Symbol

Meaning

5t

State

5v

Sub-status

tf

Current inlet temperature (℃)

tr

Current return temperature (℃)

tdh

Current tank temperature (℃)
(Only if an DHW sensor is connected)

t;vt

Current outside temperature (℃)
(Only if an outside temperature sensor is connected)

t5;l

Current solar tank temperature (℃)
(Only with the sensor connected)

fl

Current ionization current

Mf

Current fan speed omw/min

4. Settings Opentherm Modulating room thermostat

7

31032014 - 7616664-01

Symbol Meaning

pr

Current water pressure
(Only boilers with a water pressure sensor)

p;

Current heat output of boiler

5;ft

Control system software version

4.3.2.

Installer menu ?

In this menu, the installer can—depending on the boiler—adjust some
of the functions and access information.

The following is applicable to all installer settings:
4 The values to be read may differ depending on the

connected heating unit.

4 The meaning of the various codes may differ for

different boilers.

4 After selection of a parameter, it takes 1 s before the

parameter is retrieved.

Settings > Installer menu ? 0012

Settings

P001

to

P015

Consult the boiler manual when changing the boiler parameters.
If an invalid value is entered, fk1l appears on the screen.

dfdV

Revert to the factory settings.
See the installation and service manual for the boiler.

Zd

Carrying out an auto-detect.
See the installation and service manual for the boiler.

4.3.3.

Counter menu \

The history of various boiler functions can be checked in this menu.

Settings > Counter menu \

Code

Meaning

m1

Unsuccessful starts

m2

Number of times with no or low flame

m3

Number of successful starts

m4

Number of central heating pump starts

m5

Number of DHW pump starts

m6

Number of DHW burner starts

m7

Total operating hours

m8

Number of central heating pump operating hours

m9

Number of DHW pump operating hours

4.3.4.

Service menu K

Boiler service messages can be reset here.

Opentherm Modulating room thermostat

4. Settings

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8

Settings > Service menu K

WARNING

Reset the service message after the boiler service has
been carried out. This can be the active message or the
next message.

4 If zzzz is displayed in the service menu, the

boiler will not show a service code.

4 The mleZr message indicates that a (pre-)

service reset is possible. The message
mleZr Z, B or c indicates that service
message Z, B or c can be reset.

4 The boiler determines which service message can be

reset.

Code Meaning

mleZr

Service reset

Only a qualified engineer may carry out the following
operations.

When the mleZr message is displayed, you can choose to
either retain the service message or reset it. If no action is taken, the
service message will remain. To reset the service message, proceed
as follows:

1. Press the rotary and push button.

2. Turn the button to

ml[ye5

.

3. Press the button to confirm.

4. The controller will then return to the

zzzz

screen.

Multiple resets are not possible.

Operations to be carried out

K

mleZr
Z
B
c

K

Z
ml[ n0

K

Z
ml[ye5

4. Settings Opentherm Modulating room thermostat

9

31032014 - 7616664-01

5 Messages

5.1 Error messages

If an error is present, a fault code and a fault indication will appear on
the display.

Error codes

Fault
indication

Probable causes Solution

f203

c

Faulty connection to boiler. Check the boiler’s connection to the controller.

f214

c

Incorrect room temperature
reading.

Room temperature reading is incorrect. The temperature sensor
may be defective if the room temperature is between -5℃ and
65℃.

Contact your installer.

f215

c

Controller failure. Contact your installer

f217

c + e

Water pressure too low. Top up the water in the central heating system. See the

installation and service manual for the boiler.

n;
5p

c

Your boiler may not support
the OpenTherm
SmartPower.

OpenTherm SmartPower is required for the backlight.
In boilers without OpenTherm SmartPower, the Opentherm

Modulating room thermostat is functional but without backlight.
To clear the message, press the button.

R000125-A

Opentherm Modulating room thermostat 5. Messages

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10

6 Technical specifications

6.1 Technical specifications

Dimensions

80 x 90 x 32,5 (l x b x h) mm

Power supply

OpenTherm regulator OpenTherm

Electrical connection

OpenTherm regulator OpenTherm communication. Low-voltage connection

Ambient conditions

Storage conditions Temperature: -25℃ +60℃

Relative humidity 5% - 90% no condensation

Operating conditions 0℃ - 60℃

Temperature

Room temperature Measurement range: -5℃ +65℃

Maximum temperature deviation at 20℃: 0,3℃

Temperature control area 5 - 35℃

Adjustment Modulating temperature control

The control can be optimised

Room control Overshoot: Maximum 1℃ after pre-heating

Temperature variation: Less than 0,25℃

Adjustment strategies Adjustment of the room temperature

Features of the controller

Backlight Colour: blue

Control precision Temperature: 0,5℃

Control Rotary and push button

Mounting Directly on the wall using screws. Or built-in junction box as per standards

Quality marks and compliance with standards

4 EMC: 2004/108/EC, 55014

4 Emission EN61000-6-3

4 Immunity EN61000-6-2

4 Drop test IEC 68-2-32

4 RoHs Compliant

4 OpenTherm V3.0 Smartpower

Protection classification IP20

6. Technical specifications Opentherm Modulating room thermostat

11

31032014 - 7616664-01

Opentherm Modulating room thermostat 6. Technical specifications

31032014 - 7616664-01

12

AD001-AI

DUEDI S.r.l.

DE DIETRICH SERVICE

BDR Thermea (Czech republic) s.r.o

www.duediclima.it

www.dedietrich.cz

Distributore Ufficiale Esclusivo

De Dietrich-Thermique Italia

www.dedietrich-heiztechnik.com

Freecall 0800 / 201608

Jeseniova 2770/56

130 00 Praha 3

+49 (0)25 72 / 9161-0

+49 (0)25 72 / 9161-102

[e-mail]

Via Passatore, 12 - 12010
San Defendente di Cervasca
CUNEO

[phone]
[phone]
[e-mail]

[phone]
[e-mail]

IT

DE DIETRICH THERMIQUE S.A.S

DE DIETRICH THERMIQUE Iberia S.L.U.

www.dedietrich-calefaccion.es

C/Salvador Espriu, 11

08908 L’HOSPITALET de LLOBREGAT

[phone]
[e-mail]

ES

129164, Россия, г. Москва

Зубарев переулок, д. 15/1

Бизнес-центр «Чайка Плаза»,

офис 309

[phone]

CZ

© Copyright
All technical and technological information contained in these technical instructions,
as well as any drawings and technical descriptions supplied, remain our property
and shall not be multiplied without our prior consent in writing.

31032014

7616664

DEDIETRICH THERMIQUE
57,ruedelaGareF-67580MERTZWILLER-BP 30