Hot water smells in unvented system

[SimonG]

Well, forgive me for being sceptical about Simon's 'educated' diagnosis, but the heating circuit pressure has risen by 0.45 bar since yesterday with the filling loop disconnected. It's now approaching the cold water supply pressure (a measly 1.3 bar at the moment). System temperatures are the same as at the point I measured it yesterday.

Just for the record, Simon, I may not be a plumber but I am a professional engineer who operates industrial scale pressurised water systems, heat exchangers etc. day in, day out. In the time you took to type your last reply, you could instead have written a brief explanation of your reasoning, I'm sure my pretty little non-plumber head would have understood. Instead you chose to be arrogant and patronising.

Time for a professional to take over the reigns, thanks for all the assistance.

Couldn' give a toss if you're rocket scientist.

It was neither patronising or arrogant and I wished you good luck, but a typical response from a so called professional engineer.

 

[ShaunCorbs]

you sure you have an unvented as these need a min of 2.5 bar cold water pressure?

 

[dan_the_plumber]

Put food colouring into a radiator