tado° Alpha eTec33 User manual

Installation Instructions E-tec ..
These are your installation instructions to connect your tado° Extension Kit to your boiler. Please follow the instructions
carefully and only confirm the successful installation once you have finished all the steps for all devices.
If you have any questions regarding the use or installation of tado° please consult our Help Center at www.tado.com/support
Version 4.3

For support please visit: www.tado.com/support
Switching off your boiler and corresponding circuit breaker
Make sure that you take steps to ensure that the power
supply to your boiler is completely switched off and
remains switched off during the installation process. In
addition it is compulsory to remove the breaker/fuse that
your boiler is connected to, or turn of the corresponding
switch in your circuit breaker box.
If you are not 100% sure which is the
correct switch/breaker/fuse then you
must remove all breakers/fuses or turn
off the main power switch in your circuit
breaker box.
Please leave a message at the circuit breaker box such to
inform everyone not to turn anything back on.
Please make sure that all residents of the
home are aware that you are going to turn
off and that you are the only one who is
allowed to switch it on again.
Please be aware that your desktop computer
and lighting will turn off when you switch off
the mains power circuit breaker switch.
To provide safe lighting for the installation you
can use the flashlight function of your
smartphone or a torch.
1

For support please visit: www.tado.com/support
Open your boiler to get access to its control unit
Access the boiler control by opening the boiler. Since every boiler has a different opening method, take a look at our examples below to get an idea how your boiler can be
opened. All wiring connection terminals are found on the control unit. You will be looking for the place where lots of wires connect to the boiler. Look for the terminal where a room
thermostat can be connected. The installation manual of your boiler very often helps.
2

For support please visit: www.tado.com/support
Make sure the power is off
Use the voltage tester to check if there is still power on
any wiring terminal.
If there is any light it means that there is still power on the
wiring. Before continuing, switch off the circuit breaker.
If there is no light, power is off and it is safe to proceed.
3

For support please visit: www.tado.com/support
Documenting the wiring of the existing setup
As soon as you have removed the cover please take detailed photos of the existing wiring with the cables still attached. Try your best to make the terminal numbering legible.
This step is very important, you will definitely
need this information in the future. Should
you need help, it will be difficult for our
Technical Support Team to assist you
without the photos of all of the current
wiring.
You will need these photos to restore
your old system if you move house in
order to take your tado° with you. Please
save them in a place where you will find
them again in this case.
4

For support please visit: www.tado.com/support
Identifying the terminal block to connect to
Please identify the terminal block labeled N-2-1
5

For support please visit: www.tado.com/support
Connecting the tado° cable
Please take the cable provided with the tado° Extension Kit. Use the cable to connect
your boiler with the tado° Extension Kit.
Please connect the cable as follows to the boiler:
Connect the Blue wire to the terminal labelled N.
Connect the Brown wire to the terminal labelled 2.
Connect the Grey wire to the terminal labelled 1.
If there is a bridge between any two of the terminals you connect to, please remove
it. It is not needed anymore.
6

For support please visit: www.tado.com/support
Preparing the labels
Using only a pen, add the wire colors to the labels as
shown on the right.
Write into the blank areas of the labels as shown below.
Please double check your work.
Please attach the labels to the cables as shown in the
image. Matching the cable colors with the colors written
on the stickers is mandatory. Please double check your
work now.
Blue is N, Brown is L and grey is 4
7

For support please visit: www.tado.com/support
Leading the cable out and closing the boiler
Carefully thread the tado° cable out of you boiler. Please check that there are no sharp
edges that could damage or trap the cable.
Carefully close the boiler and its control panel by reversing the sequence in which you
opened it.
8

For support please visit: www.tado.com/support
Selecting the location for the tado° Extension Kit
The following steps describe how to mount the tado° Extension Kit on the wall.
Please do not mount the tado° Extension Kit to the boiler itself.
9