Following a visit from British Gas for the annual service\\check
the engineer told me I needed to replace the copper filling loop with a
flexible hose type to comply with the water suppliers regulations. The set
up will be identical apart from the flexible hose, what change to the
possible contamination of the drinking water will this bring? Is it just a
case of being able to remove the flexible hose from the system or is there
something else? Hope I have made my point clearly.
Exactly! In theory I understand that you are meant to disconnect the
filling loop when not in use - but I don't know anyone who does.
I also know of a recently (2001) installed system that has a pressure vessel
permanently connected to the mains that keeps the system topped up
automatically - which very cleverly masked a leak (under the floor) until we
had another problem and turned the supply off - the pressure dropped and hey
ho no heating or hot water.
I have had two combi systems installed by two different plumbers, both
reputable & both left the filling loop attached.
My current Alpha system was repaired by the regional service technician
(several lesser tchnicians had failed!) and he didn't comment on it.
This seems to be normal practice
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