"Dave Plowman (News)" wrote in message
...
In article ,
Doctor Drivel wrote:
It is a Worcester Heatslave - it says on the box. They used the Thorn
boiler because it was very slim for the time and could fit in the box.
It was the first combi in the UK in the 1970s. I forget the operation.
It may have been a thermal store coil inside or maybe an external
bubble type of heat exchanger to heat the water instantly. They were
used in flats and the larger burners in some houses. They were
reliable enough but expensive - but cheap if the tanks and cylinder in
a system are eliminated in an system. It suffered from ignorance by
bathroom changing plumbers, who never understood it - nothing has
changed - and were put off by the high price of the "box", not doing
the sums for the whole system, which case it was cheaper.

You

Please eff off as you a total plantpot.