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There are indeed two valves, the one nearest the megaflow did have resistance when there was no call from either ch or hw, and the second valve furthest from the megaflow was in the manual open position. I put the hw on, and ran the hot tap, and the resistance in the first (nearest) valve did...

Thanks guys, that is really helpful, I will try when I get home and let you know what I find, thanks again.

yep, two

Ok will do is there anything I can look out for which would tell me it's not working properly? Thanks for your help btw.

I only drained it out of the tap in the kitchen, just to make sure that there would be a request to the boiler to fire up to heat the water.

Hi there, I'd be grateful for some help if poss 7 day programmer with seperate CH and HW controls glow worm 30 sxi boiler in the garage and a megaflo HE CL210 indirect cylinder. System was installed in a new build two and a half years ago. I drained the tank of hot water, switched both...