In message , John
Rumm writes
andrewpreece wrote:


Check that if you have a stopcock or isolation valve/tap in the line that it
is
fully open. My initial flow rates were rather disappointing until I realised
that
the combi was fed from an isolation tap, which was only cracked open
halfway.

Some combis control the flow rate of hot water produced,

Which ones and how ?

I can't think of any.

Every boiler I can think of which has dynamic control over the DHW
temperature does this using a modureg - a gas valve which varies it's
output depending on the temperature of the water coming out of the heat
exchanger



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--
geoff