Refitting a radiator sequence

23 Oct 2016
Reaction score
United Kingdom
Taken a rad off the wall for replastering etc; Bosch worcester greenstar combi boiler system.

When I put it back and reconnect pipes, what is the best sequence to follow to refill etc?

open rad valves & refill rad, then add water at boiler filling point until 1.5 bar reached?

or, add water and repressurise before filling rad then adjust pressure/water top up afterwards?

Or dosen't it matter?

I assume system should be cold and switched off?

Any useful advice welcome.

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Chuck it on the wall ...tighten nuts and open valves.
Vent rad until full or air stops. Check system pressure and top up......repeat as necessary.

Boiler turned OFF !!!

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