Hey Razz, yeah it’s recommended that if you drain down the boiler for any reason at all, then once filled up, put it into purge mode to get out any air that might be in the boiler

@@abdullahX001Did you find out?

Thanks Mike! 💪

@@advancedboilertraining ur welcome i still got quite a few to watch getting there

I keep telling myself I’m going to buy a 8mm ratchet but I never get round to it 😂 just placed my order 👍 & Na not really. Have you found it’s worth doing on draining down?

@@advancedboilertraining wera ratchets spanners are good, but iv got a flexi head set from Aldi that are spot on! I don't use the mid position mode tbh, just heard from others that it's better for boiler

@@advancedboilertraining you will love it when you get the ratchet no more faffing about with a spanner 😂

Yeah it can happen but it’s part of the process. You could leave them open but then you’d be draining more than just the boiler, which takes more time.

@@advancedboilertraining I’d rather take the time to vent a few rads than have to replace those leaking isolation valves.... they’re expensive an all. You’ve got less chance of them leaking if you get the pressure down to 0 then use the valves, still a risk though.

Tom Strutton Fair enough, every engineer is different. There’s always multiple ways to do one thing 👍

I'd have isolated the bottom of the magnetic filter and connected a washing machine hose to the bottom. Pump the vessel. If the boiler's at the highest point of the system you don't have to worry about shutting the valves off. The whole principle of showing the boiler isolated and drained this way. Is because it's the manufacturers instructions state this method. Like they say " there are many ways to skin a cat ". We all have our methods . Excellent tutorial bro👍

@@rayc1503 ^^ exactly that, if it works, it works 🤷‍♂️😂 always multiple ways to do certain things. Some ways are faster, slower, riskier, etc. Always comes down to what tools the engineer has available and their risk tolerance

8mm I believe