My central heating is a closed system with a combi boiler and 7 rads all on the same floor. The pipes are 8mm microbore, which I gather is plumbed as a 'star' from a central 22mm pipe and a manifold.
I need to drain the system to change radiator valves on one rad. There's a drain cock that's a bit awkward to get to so I was planning to drain from one of the valves that I'm planning to replace.
To make this a little easier (I can only really get a tray under the valve) I was wondering if it was possible to close the valves on all the other radiators, so that I only drain the pipework rather than the rads.
When I refill the system I could then leave the air vent open on the new radiator and stand by with a bucket when the last of the air is forced out (rather than chase air around the system later on).
Is there something I'm missing here? It SEEMS like a cunning plan, but you may put me right!
Any comments appreciated!
I need to drain the system to change radiator valves on one rad. There's a drain cock that's a bit awkward to get to so I was planning to drain from one of the valves that I'm planning to replace.
To make this a little easier (I can only really get a tray under the valve) I was wondering if it was possible to close the valves on all the other radiators, so that I only drain the pipework rather than the rads.
When I refill the system I could then leave the air vent open on the new radiator and stand by with a bucket when the last of the air is forced out (rather than chase air around the system later on).
Is there something I'm missing here? It SEEMS like a cunning plan, but you may put me right!
Any comments appreciated!