This is an Ex Council property, in other words I bought it from its previous owner who purchased it from his local Council, under the right to buy council homes. under Mrs Thatcher's new scheme!
So these are Council build row of houses, and all fixtures and fittings must comply with that council's own building regulations as well as any heating appliances they originally installed, so are you telling me that nearly a dozen or so RGI are incompetent to have issued a safety record for the past 15 years, and that it must have a dedicated return path for the burner.
For your information, yes all the Engineers who worked on this system are fully competent WAU specialist, the only requirement for ventilation is that the premises must have permanent means of adequate vent, that is open to outside to draw fresh air into the hall way. This does not mean it has to be a spiral duct or any other duct as long as the fresh air gets to the hallway from where it is drawn into the cupboard through two vents on the door, so in my view it has always had adequate ventilation and unless it was deliberately blocked by a tenant, that is another issue, and if you have stupid tenants then nothing would stop them blocking a duct or a spiral inlet either if they wanted to.
Although, the rules may have changed since then, no one has ever mentioned that it needs a dedicated air ducting to the burner, but I was considering independently to have one installed to avoid tenants blocking the PV, it isn't difficult to do one if need be, but I think, I will once this tenant moves out and the house is empty, get a new wet system installed once and for all, then my mate can service it as well as he is an RGI but he does not do the WAU or the open gas fires.
Please don't try to assume I break gas safe or other housing rules, the agents I employed won't allow me to do this even if I wanted, most of the times they sent in an engineer of their choice who is always WAU qualified, so it is all nonsense and not a wishful thinking to suggest that these engineers were not WAU specialist.
regardless of ventilation, this is about what made that panel melt! The ventilation is another issue, and is correctly addressed and is more than adequate, as long as it remains open.
I am far more concerned that she might not use this heating and continue to use that portable calor gas, ( because it costs less to heat just the area she is using as opposed to my WAU costs more to heat the whole house!)
which in my view is far more deadly, as it has no flue and all combustible products are discharged internally, and she did whilst that PV was sealed off! I tell you she is some crazy woman and I could get into serious issues with the Coroner! bla bla bla...the occupants were overcome by carbon monoxide due to the negligence of the landlord! I can't wait to evict her now, I will be seeking legal advice and since the lettings agent will no longer deal with me so i am in yet another problem trying to persuade a court that this tenant has been messing about with serious issues! jeopardised my heating system and made it dangerous, for which i am ultimately responsible. ****e!