Thanks for the replies
to answer a few of the question posted.
i bought all the rads and gave the plumber all the install and tech docs I got from the Stelrad site.
I've three more unmounted rads and not seen any marking on them to show the input but there's a tech sheet packed with...
I am renovating a bungalow and had a plumber into replace the old boiler and radiators etc.
I'd bought Stelrad Vita Eco for each room, all were installed and working fine or so I thought.
I have a number of rads that get warm but only just, checking the tech doc from stelrad the input is...