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Vented System Draining With Rayburn and Storage in Airing Cupboard

Posted: Sun Jul 09, 2017 11:41 am
by aled98
hi everyone. diyer in need of some advice.
i have a vented system tank in loft - storage in airing cupboard and a rayburn down stairs.
need to drain the system to fit a new sink and bath. what is the easiest way of draining and filling the system?
there is a drain on the rayburn do i switch supply off and drain from there or will that just drain the rayburn tank.
thanks in advance