I want to remove a rad to decorate. I dont know if the boiler will vent itself when I refill the system or not. Anyone out there know? The boiler has a filling loop; I assume that I open this up to refill the system, with the radiator valves open and the bleed screw undone. But do I need to bleed the boiler as well or will the auto air vent take care of this.
Vaillant Condensing boiler - radiator removal & refill
Oct 03, 2005
1 Replies
See the sealedCH faq. However you are best off closing both rad valves then drain the radiator at one of its couplings to the valves into a deep tray or whatever.
When you refill have someone keep the pressure up with the filling loop as you slowly open the rad valves.
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