Sorry high-spec Please read with question re couplings.
I am an idiot not making it clear. I will be connecting to the existing radiator 15mm feed pipes as it would destroy two runs of expensive parque flooring to reach the 22mm flow pipes. The appliance being the existing bedroom rad. The feeds from that will be going off to the on-suite to feed a towel rail not another rad as I first thought.
I don't know what pressure the Ideal Icos boiler runs at but according to speedfit pushfit joint pack it states 'Suitable for central heating applications' without any mention of limit on pressure except for use on hydraulic unit is a no! no!
hope this makes it clearer. Thanks Greengrass
greengrass
July 2007