My brother who lives in the NE of Scotland has finally cut his losses with
his Potterton Envoy which has broken down more times than any other boiler
I've heard of and had it replaced by Scottish Gas with their own brand
made by Bosch Worcester. For the reasonable sum of 1200 quid.
This was only completed yesterday, and he phoned me last night for some
advice before getting them back in.
Seems it's pumping over - and badly. Quite an achievement given the
header tank is a whole floor above the highest rad - the attic floor of
the very large house being unheated.
He'd rescued the installation instructions from the rubbish and couldn't
find any instructions for setting the maximum (integral) pump speed. Or
indeed anything about it being used on an open vented system.
The Potterton utilised the old pump and divertor valve from the original
installation whereas now they've remove the old pump and are using the
He can't find a reference number that refers to any Bosch Worcester one so
can't look it up for help on their site.
He was told it is actually a combi with the hot water side unused.
Given the last straw with the Potterton was the heat exchanger split while
he was on holiday and badly flooded the utility room I'd have thought
they'd have recommended changing to a sealed system anyway.
Any comments from the experts?
*If a parsley farmer is sued, can they garnish his wages?
Dave Plowman firstname.lastname@example.org London SW
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