I have a Vaillant ecotec system boiler with a 240v room stat wired via a Danfoss wiring centre to control my ufh system. I have done all the wiring but am stuck at the point of connecting the boiler enable / live / switched live connections from the boiler to the wiring centre. (I will do the work myself then have a qualified electrical engineer to check it for me prior to hime commissioning it - (the father in-law)). My questiion if anyone can help is;
There is a 'Live from boiler' terminal and a 'Switched live to boiler enable' terminal on the ufh wiring centre and two terminals marked 3 & 4 on the Vaillant boiler (which are currently linked with a wire) for the remote stat. Question is which wire goes to 3 and which goes to 4 please??? Thanks.
There is a 'Live from boiler' terminal and a 'Switched live to boiler enable' terminal on the ufh wiring centre and two terminals marked 3 & 4 on the Vaillant boiler (which are currently linked with a wire) for the remote stat. Question is which wire goes to 3 and which goes to 4 please??? Thanks.