wrote:
Hello,

How do you add Sentinel X100 concentrate via a radiator on a sealed
system?

Do you have to partially drain the radiator?

Yes. Close both valves to isolate the rad. Wickes do a small rubber pump
kit
http://www.wickes.co.uk/MaintenanceI...or/invt/159829

Remove the bleed valve & bung using one of these
http://www.wickes.co.uk/Plumbing-Too...ey/invt/500042.

The gizmo will suck out a suitable amount of water & pump back the
inhibitor.

Easy peasy lemon squeezy.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk