Ventilation for a back boiler?

Question

British Gas have failed my yearly inspection due to ventilation. I have had them round twice now to tell me exactly what i need to do to rectify the problem and they will not tell me exactly how big this vent needs to be or where it is supposed to be etc.. i have just had one installed by a Corgi registered guy and British Gas say that ventitlation is not to regs ..i am confused and getting no answer from British Gas ..Any ideas of the regs please

Answer 1

Since they failed you, you have the right to see a copy of the regulations that they are using.  In addition the Corgi registered person should know what is needed and, since it failed again, he should make good.