Hi after work on the boiler the CH sealed system was drained and needs re-filled. I turned off all the rads at both sides! before he drained it. He had trouble when re-filling it and is coming back today. If i closed the lockshield valves as well would that cause difficulty for him re-filling?
I.E. when refilling a system should the radiators be off but with the lockshield side open? or was turning all rad connections off before draining the right thing to do?
Thanks
I.E. when refilling a system should the radiators be off but with the lockshield side open? or was turning all rad connections off before draining the right thing to do?
Thanks