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Thanks kevplumb but is it simply a case of isolating the water entering the boiler and then attaching a hose to the drain point? Is there anything else I need to do in terms of pressure etc? Also, is refilling the opposite of draining and how do I control pressure etc? Apologies for the...

Thank you for that but I've never attempted anything like this before so I'll need step by step instructions! Thanks

I have a Grant Combi 70 MkII boiler and have been told that I need to drain it to move my radiator. The radiators do not have a drain point which is why I have been told to use the drain point on the boiler. Is anyone familiar with this boiler and if so, how can I safely drain and refill it...