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Hi Everyone, I live in a bungalow and my Megaflo is actually lower than my lowest hot tap. So it seems the only way to recharge the airgap is to drain it from the drain tap at the bottom of the megaflo. I think I have the procedure, but as you are draining it do you need to still open the hot...

Hi, Thanks for your reply, there is no problem as such but it was just that in the very cold snap at the start of the year the system could not get the lounge above 18C but it was -10C outside! So I wondered if changing the pump speed would make any difference, plus in the manual it said it...

Hi Everyone, I hope this is the right forum for this question, I have had underfloor heating fitted and I want to know what effect changing the pump speed would have on the system? Its just that in the manual it says the Grundfoss pump is normally set to position 3, well mine is at 2 and I...