Help in wiring for Vaillant EcoMax
Hello ,This is my first post here for help so please bear with me if this topic has already been discussed before
I have got Vaillant EcoMax 24k Combi boiler (no hot water tank )
I ahve bought a new wireless thermostat V3+,And my boiler or house dont have any kind of thermostat installed at the moment
Bit confused with wiring instructions from Tado so i am posting a picture of my boilers wiring and would appreciate if someone could put me in right direction about wiring
Tado auto instructions says i just need 3 core of the cable (out of 4 cores)and should ignore the black cable
and on the wireless reciever side i should make a loop between L and COMMON and the grey would go in CH NO
i am doubtfull about this wiring
can anyone suggest what i am suppose to do ?
I think gery and black cable should go in 3 and 4 at RT230V And then should go at Common and CH NO
PLEASE HAVE A LOOK AT THE PICTURE
Answers
-
Hi,
You photo matches up with the Analog section of the Professional installers PDF for the wired smart stat (but not the extension kit), which may be helpful.
See, https://www.tado.com/start/manuals/st/Wired%20Smart%20Thermostat%20Manual.pdf
The Low Voltage Digital instructions for the Extension pack reference the same analogue connectors as the above manual.
If you needs further assistance I would recommend using the chat support option on the main site https://support.tado.com/en/ They helped with exact info for my UFH and were great.
The full list of PDFs is here https://www.tado.com/all-en/professional-manuals
Gabriel
1 -
The instructions say I should connect L,N and grey cables in 230v RT block
Normally L and N goes into existing boiler supply ,where boilers supply is connected
Never heard L and N goes into 230v RT block too0 -
Hi,
If I understand correctly you are suggesting connecting it like page 7 of the manual https://www.tado.com/start/manuals/st/Extension%20Kit%20Manual%20-%20230V%20Relay%20Installations.pdf
Which number positions in you boiler photo are the Tado instructions saying L/N/G should go? Because the boiler end is switching 240v the Extension kit can simply pick up the live there, hence the link from L to COM on the kit.
Gabriel
0 -
thanks
the instructions are saying
L should go at no 3
N should go at no 5
and GREY should go at no 4
0 -
Hi,
The Tado instructions are correct according to the EcoMax manual
See section 4.17.1 or 4.17.2 in https://www.vaillant.co.uk/downloads/z/ecomax/ecomax-use-installation-and-servicing-manual-261444.pdf
Gabriel
4.18.1 External electrical controls
The boiler terminals 3, 4 and 5 are for connecting external
electrical controls such as a programmer, room thermostat,
etc. Terminals 3 and 4 are linked together when
the boiler is supplied. If external controls are used, this
link must be removed, and the controls connected
across terminals 3 and 4. Terminal 5 is an additional
neutral connection for external controls.
0
