DeDietrich OpenTherm User manual

EN
Modulating room thermostat
Opentherm Modulating room
thermostat
Installation and
Service Manual
7616664-01

Contents
1 Preface ........................................................................................................2
1.1 General ..................................................................2
2Location ......................................................................................................3
2.1 Position of the regulator ......................................3
2.2 Installation and connection .................................3
3Commissioning ..........................................................................................5
3.1 Fitted control unit .................................................5
3.1.1 Control .....................................................................5
3.1.2 Default setting .........................................................5
4Settings .......................................................................................................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
5Messages ..................................................................................................10
5.1 Error messages ...................................................10
6 Technical specifications ..........................................................................11
6.1 Technical specifications ....................................11
131032014 - 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.
4Install the regulator in the reference room (generally the living
room).
4Do 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
331032014 - 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
1Display
2Rotary 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.
4The button is both a rotary button and a push button.
4Turn it to scroll through menus or change values.
4Press it to confirm choices (Such as menu
selections).
nMeaning of the symbols on the display
Symbol Meaning Symbol Meaning
TECO mode on >Back
eWater pressure too low QInformation menu
cDefect WUser menu
?Boiler service required ?Installer menu
HCurrent temperature \Counter menu
MSet temperature KService menu
DCentral heating function on IBurner on
NDomestic 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:
4Set temperature 15℃
4ECO AUTO
4The most recent set temperature is saved
R000057-D
1
2
3. Commissioning Opentherm Modulating room thermostat
531032014 - 7616664-01

4 Settings
4.1 Changing the settings
4.1.1. Modifying the temperature
1Set temperature
2Measured temperature
4Turn the button to set the ambient temperature.
4Press the button to confirm.
4.1.2. Menu structure
To access the menu, proceed as follows:
4Press the rotary and push button for at least 3 sec.
4Turn the button until you reach the required menu.
4Press the button to confirm.
4Amend the selected menu item.
4Press the button to confirm.
4Exit 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
31032014 - 7616664-01 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
731032014 - 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:
4The values to be read may differ depending on the
connected heating unit.
4The meaning of the various codes may differ for
different boilers.
4After 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
31032014 - 7616664-01 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.
4If zzzz is displayed in the service menu, the
boiler will not show a service code.
4The 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.
4The 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
931032014 - 7616664-01