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

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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

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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

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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

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