Bonding Flow and return With plastic manifold on microbore?

1 Feb 2008
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United Kingdom
Hi can someone please help me with my bonding issue, I have a combi boiler with 10mm microbore flow and returns to all 11 of my radiators via a series of speed fit 4 pot plastic manifolds, Question! should I connect a bond from the 22mm copper flow to each microbore feed at the manifold to keep the continuaty, Is this required? as Ihave been reading through some forums and bonding central heating pipes not in the special zones is a bit of a gray area! I realise my bathroom pipes should all be bonded but my central heating boiler is in a cupboard in a bedroom and the flow and return points are under the floor with a hatch, My main cold water pipe and gas pipe are bonded just as they enter the building. There is also no cross bonding present at the boiler. would I be right in saying that the flow and returns to radiators are effectivally isolated from earth with the plastic manifold or am I speaking sh**e? any help would appreciated thanks.
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