Baxi 600 electrical connection

[davesparks]

hi Dave - yes i'm in the UK. The FCU connects to the fuse spur directly and the fuse spur then feeds the boiler and controls. Is this not correct?

That is not the way the boiler manufacturers have specified that it be connected. So in that respect it is not correct.

 

[davesparks]

The thermostat being fed direct from the FCU means the boiler cannot switch the live to the thermostat (which it may not need to do anyway).

It also means that the thermostat and therefore S/L terminal remains live when the boiler internal fuse blows so the appliance which appears to be dead may not actually be dead.

 

[Deleted member 26818]

Thanks Spin - Im going to check whether the black is switch live by connecting everything up and see if the connector receives a signal when the heating isn't being called

Take care, because it’s likely to be 230V.

 

[Pete999]

My advise is get a spark in to sort it out .other wise it could be a expensive mistake.just to elitarate why are you using a neon screw driver for testing you could have used your finger

Eliterate, do you mean reiterate? you need your fingers seeing to Buzz

 

[Deleted member 26818]

It also means that the thermostat and therefore S/L terminal remains live when the boiler internal fuse blows so the appliance which appears to be dead may not actually be dead.

Live to the thermostat on mine is via the on off switch on the boiler and a 2A fuse.

 

[niren]

Ok the move of the black wire to choc 1 in the boiler appears to have sorted it. I hope im not speaking too soon but thanks for all your help folks!

 

[Toneyz]

Black should be in B1,B2 is 230v out to room stat B1 is the sw return.

 

[123]

Need to wary of the manufacturer instructions for any future warranty issues. I'm not familiar with Baxi, but if it's anything like Worcester Bosch and you just put a Switched Live back into the boiler and there is a fault, then you have no warranty. Baxi looks a similar enough setup.

At a guess you've spent £2,500 on this boiler change, £200 on a Tado and won't pay a further £100 or so getting someone in who know's what they are doing. Sheer madness.