Recent content by Racricket

Evening all I'm just looking for some clarification on the wiring of a nest heat link and thermostat.. The heating system is a y plan so at the programmer we have Live and Neutral in , a hot water satisfied, a heating demand and a hot water demand cable all going up to the wiring centre. I'm...

Will do 

I'll let you know once I've spoken to the other electrician 

Wrong..I wired the boiler and all was OK, the plumber hadn't provided a cylinder demand terminal box so I left  waited for the call to say it had arrived and went back and installed it. Went back and found the hot water demand wasn't switching off so attempted to resolve it by calling viessmann...

Ive noticed Y plans show a return cable to the HW off on the programmer and the valve used in a y plan is a 3 port valve which doesn't have the brown cable to energise the motor.. The S plan does have the brown cable to energise the motor but doesn't show a return cable to the HW off terminal...

Just an update  The plumber drafted in his own electrician and after x amount of calls to viesmann it's  finally sorted.  I'm not sure how I'm waiting for an update if not I'll drive through and look myself but apparently it's do with a link in the thermostat.. I can only presume this would...

Hi thanks everyone for the input so far. I don't have a PC and the images I took are too big to download to this topic. I'm also not on the job at the moment so not sure on water temperature out of the boiler. The plumber went yesterday to check it out and I haven't heard anything since so...

It's a 2 port valve dedicated to hot water only 

It's a combination boiler used within a system boiler set up there is only 1 valve and this is purely for hot water.. I've set the cylinder stat to 60 degrees and the boiler is running constantly even though the water temperature is red hot. I expect the cylinder stat to switch off when the...

Evening all I'm just after some advice on the wiring of the above boiler.. The plumber has wired it as a 4 pipe system. the system consists of the boiler which is a combination boiler A cylinder with a 13 amp immersion heater (used as back of up if boiler breaks) cylinder stat Room stat...