HVAC Questions? Ask an HVAC Expert for Answers ASAP
Good evening, and welcome to the Technical section in JustAnswer, an independent paid question and answer platform that matches customers' questions to experts in various skills. My name is ***** ***** I'll be happy to help you today.The answer to your question is that on this boiler access to the PRV is gained from within the boiler casing.If a service is overdue then I recommend that you get the boiler serviced, and when you book the engineer to come ask them to come prepared to test the EV (expansion vessel). The reason I say this is because if the EV has lost its pressure then the PRV will probably open again and you'll be back to square one._____There's no time pressure on this topic - it will stay open to you for many days, and you can reply at any time. I will be away from my desk sometimes, but will respond as soon as I can.
You're welcome :-)IMHO he's quite correct to say "That's not right", because it isn't right. Since his remit was to service the boiler, he shouldn't get involved in hunting for the cause of pressure loss - it could potentially be from anywhere in the system.